23 files changed, 4161 insertions, 95 deletions

diff --git a/tools/perf/Documentation/perf-sched.txt b/tools/perf/Documentation/perf-sched.txt
new file mode 100644
index 00000000000..1ce79198997
--- /dev/null
+++ b/tools/perf/Documentation/perf-sched.txt
@@ -0,0 +1,41 @@
+perf-sched(1)
+==============
+
+NAME
+----
+perf-sched - Tool to trace/measure scheduler properties (latencies)
+
+SYNOPSIS
+--------
+[verse]
+'perf sched' {record|latency|replay|trace}
+
+DESCRIPTION
+-----------
+There's four variants of perf sched:
+
+  'perf sched record <command>' to record the scheduling events
+  of an arbitrary workload.
+
+  'perf sched latency' to report the per task scheduling latencies
+  and other scheduling properties of the workload.
+
+  'perf sched trace' to see a detailed trace of the workload that
+  was recorded.
+
+  'perf sched replay' to simulate the workload that was recorded
+  via perf sched record. (this is done by starting up mockup threads
+  that mimic the workload based on the events in the trace. These
+  threads can then replay the timings (CPU runtime and sleep patterns)
+  of the workload as it occured when it was recorded - and can repeat
+  it a number of times, measuring its performance.)
+
+OPTIONS
+-------
+-D::
+--dump-raw-trace=::
+        Display verbose dump of the sched data.
+
+SEE ALSO
+--------
+linkperf:perf-record[1]
diff --git a/tools/perf/Documentation/perf-timechart.txt b/tools/perf/Documentation/perf-timechart.txt
new file mode 100644
index 00000000000..1c2ed3090cc
--- /dev/null
+++ b/tools/perf/Documentation/perf-timechart.txt
@@ -0,0 +1,38 @@
+perf-timechart(1)
+=================
+
+NAME
+----
+perf-timechart - Tool to visualize total system behavior during a workload
+
+SYNOPSIS
+--------
+[verse]
+'perf timechart' {record}
+
+DESCRIPTION
+-----------
+There are two variants of perf timechart:
+
+  'perf timechart record <command>' to record the system level events
+  of an arbitrary workload.
+
+  'perf timechart' to turn a trace into a Scalable Vector Graphics file,
+  that can be viewed with popular SVG viewers such as 'Inkscape'.
+
+OPTIONS
+-------
+-o::
+--output=::
+        Select the output file (default: output.svg)
+-i::
+--input=::
+        Select the input file (default: perf.data)
+-w::
+--width=::
+        Select the width of the SVG file (default: 1000)
+
+
+SEE ALSO
+--------
+linkperf:perf-record[1]
diff --git a/tools/perf/Documentation/perf-trace.txt b/tools/perf/Documentation/perf-trace.txt
new file mode 100644
index 00000000000..41ed75398ca
--- /dev/null
+++ b/tools/perf/Documentation/perf-trace.txt
@@ -0,0 +1,25 @@
+perf-trace(1)
+==============
+
+NAME
+----
+perf-trace - Read perf.data (created by perf record) and display trace output
+
+SYNOPSIS
+--------
+[verse]
+'perf trace' [-i <file> | --input=file] symbol_name
+
+DESCRIPTION
+-----------
+This command reads the input file and displays the trace recorded.
+
+OPTIONS
+-------
+-D::
+--dump-raw-trace=::
+        Display verbose dump of the trace data.
+
+SEE ALSO
+--------
+linkperf:perf-record[1]
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 9f8d207a91b..0aba8b6e9c5 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -373,13 +373,16 @@ LIB_OBJS += util/thread.o
 LIB_OBJS += util/trace-event-parse.o
 LIB_OBJS += util/trace-event-read.o
 LIB_OBJS += util/trace-event-info.o
+LIB_OBJS += util/svghelper.o
 
 BUILTIN_OBJS += builtin-annotate.o
 BUILTIN_OBJS += builtin-help.o
+BUILTIN_OBJS += builtin-sched.o
 BUILTIN_OBJS += builtin-list.o
 BUILTIN_OBJS += builtin-record.o
 BUILTIN_OBJS += builtin-report.o
 BUILTIN_OBJS += builtin-stat.o
+BUILTIN_OBJS += builtin-timechart.o
 BUILTIN_OBJS += builtin-top.o
 BUILTIN_OBJS += builtin-trace.o
 
@@ -710,6 +713,12 @@ builtin-help.o: builtin-help.c common-cmds.h PERF-CFLAGS
 		'-DPERF_MAN_PATH="$(mandir_SQ)"' \
 		'-DPERF_INFO_PATH="$(infodir_SQ)"' $<
 
+builtin-timechart.o: builtin-timechart.c common-cmds.h PERF-CFLAGS
+	$(QUIET_CC)$(CC) -o $*.o -c $(ALL_CFLAGS) \
+		'-DPERF_HTML_PATH="$(htmldir_SQ)"' \
+		'-DPERF_MAN_PATH="$(mandir_SQ)"' \
+		'-DPERF_INFO_PATH="$(infodir_SQ)"' $<
+
 $(BUILT_INS): perf$X
 	$(QUIET_BUILT_IN)$(RM) $@ && \
 	ln perf$X $@ 2>/dev/null || \
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 99a12fe86e9..2459e5a22ed 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -48,6 +48,8 @@ static int			call_graph			= 0;
 static int			inherit_stat			= 0;
 static int			no_samples			= 0;
 static int			sample_address			= 0;
+static int			multiplex			= 0;
+static int			multiplex_fd			= -1;
 
 static long			samples;
 static struct timeval		last_read;
@@ -470,19 +472,28 @@ try_again:
 	 */
 	if (group && group_fd == -1)
 		group_fd = fd[nr_cpu][counter];
+	if (multiplex && multiplex_fd == -1)
+		multiplex_fd = fd[nr_cpu][counter];
 
-	event_array[nr_poll].fd = fd[nr_cpu][counter];
-	event_array[nr_poll].events = POLLIN;
-	nr_poll++;
-
-	mmap_array[nr_cpu][counter].counter = counter;
-	mmap_array[nr_cpu][counter].prev = 0;
-	mmap_array[nr_cpu][counter].mask = mmap_pages*page_size - 1;
-	mmap_array[nr_cpu][counter].base = mmap(NULL, (mmap_pages+1)*page_size,
-			PROT_READ|PROT_WRITE, MAP_SHARED, fd[nr_cpu][counter], 0);
-	if (mmap_array[nr_cpu][counter].base == MAP_FAILED) {
-		error("failed to mmap with %d (%s)\n", errno, strerror(errno));
-		exit(-1);
+	if (multiplex && fd[nr_cpu][counter] != multiplex_fd) {
+		int ret;
+
+		ret = ioctl(fd[nr_cpu][counter], PERF_COUNTER_IOC_SET_OUTPUT, multiplex_fd);
+		assert(ret != -1);
+	} else {
+		event_array[nr_poll].fd = fd[nr_cpu][counter];
+		event_array[nr_poll].events = POLLIN;
+		nr_poll++;
+
+		mmap_array[nr_cpu][counter].counter = counter;
+		mmap_array[nr_cpu][counter].prev = 0;
+		mmap_array[nr_cpu][counter].mask = mmap_pages*page_size - 1;
+		mmap_array[nr_cpu][counter].base = mmap(NULL, (mmap_pages+1)*page_size,
+				PROT_READ|PROT_WRITE, MAP_SHARED, fd[nr_cpu][counter], 0);
+		if (mmap_array[nr_cpu][counter].base == MAP_FAILED) {
+			error("failed to mmap with %d (%s)\n", errno, strerror(errno));
+			exit(-1);
+		}
 	}
 
 	ioctl(fd[nr_cpu][counter], PERF_COUNTER_IOC_ENABLE);
@@ -513,6 +524,7 @@ static int __cmd_record(int argc, const char **argv)
 	pid_t pid = 0;
 	int flags;
 	int ret;
+	unsigned long waking = 0;
 
 	page_size = sysconf(_SC_PAGE_SIZE);
 	nr_cpus = sysconf(_SC_NPROCESSORS_ONLN);
@@ -614,17 +626,29 @@ static int __cmd_record(int argc, const char **argv)
 		int hits = samples;
 
 		for (i = 0; i < nr_cpu; i++) {
-			for (counter = 0; counter < nr_counters; counter++)
-				mmap_read(&mmap_array[i][counter]);
+			for (counter = 0; counter < nr_counters; counter++) {
+				if (mmap_array[i][counter].base)
+					mmap_read(&mmap_array[i][counter]);
+			}
 		}
 
 		if (hits == samples) {
 			if (done)
 				break;
-			ret = poll(event_array, nr_poll, 100);
+			ret = poll(event_array, nr_poll, -1);
+			waking++;
+		}
+
+		if (done) {
+			for (i = 0; i < nr_cpu; i++) {
+				for (counter = 0; counter < nr_counters; counter++)
+					ioctl(fd[i][counter], PERF_COUNTER_IOC_DISABLE);
+			}
 		}
 	}
 
+	fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking);
+
 	/*
 	 * Approximate RIP event size: 24 bytes.
 	 */
@@ -681,6 +705,8 @@ static const struct option options[] = {
 		    "Sample addresses"),
 	OPT_BOOLEAN('n', "no-samples", &no_samples,
 		    "don't sample"),
+	OPT_BOOLEAN('M', "multiplex", &multiplex,
+		    "multiplex counter output in a single channel"),
 	OPT_END()
 };
 
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
new file mode 100644
index 00000000000..275d79c6627
--- /dev/null
+++ b/tools/perf/builtin-sched.c
@@ -0,0 +1,2004 @@
+#include "builtin.h"
+#include "perf.h"
+
+#include "util/util.h"
+#include "util/cache.h"
+#include "util/symbol.h"
+#include "util/thread.h"
+#include "util/header.h"
+
+#include "util/parse-options.h"
+#include "util/trace-event.h"
+
+#include "util/debug.h"
+
+#include <sys/types.h>
+#include <sys/prctl.h>
+
+#include <semaphore.h>
+#include <pthread.h>
+#include <math.h>
+
+static char			const *input_name = "perf.data";
+static int			input;
+static unsigned long		page_size;
+static unsigned long		mmap_window = 32;
+
+static unsigned long		total_comm = 0;
+
+static struct rb_root		threads;
+static struct thread		*last_match;
+
+static struct perf_header	*header;
+static u64			sample_type;
+
+static char			default_sort_order[] = "avg, max, switch, runtime";
+static char			*sort_order = default_sort_order;
+
+#define PR_SET_NAME		15               /* Set process name */
+#define MAX_CPUS		4096
+
+#define BUG_ON(x)		assert(!(x))
+
+static u64			run_measurement_overhead;
+static u64			sleep_measurement_overhead;
+
+#define COMM_LEN		20
+#define SYM_LEN			129
+
+#define MAX_PID			65536
+
+static unsigned long		nr_tasks;
+
+struct sched_atom;
+
+struct task_desc {
+	unsigned long		nr;
+	unsigned long		pid;
+	char			comm[COMM_LEN];
+
+	unsigned long		nr_events;
+	unsigned long		curr_event;
+	struct sched_atom	**atoms;
+
+	pthread_t		thread;
+	sem_t			sleep_sem;
+
+	sem_t			ready_for_work;
+	sem_t			work_done_sem;
+
+	u64			cpu_usage;
+};
+
+enum sched_event_type {
+	SCHED_EVENT_RUN,
+	SCHED_EVENT_SLEEP,
+	SCHED_EVENT_WAKEUP,
+};
+
+struct sched_atom {
+	enum sched_event_type	type;
+	u64			timestamp;
+	u64			duration;
+	unsigned long		nr;
+	int			specific_wait;
+	sem_t			*wait_sem;
+	struct task_desc	*wakee;
+};
+
+static struct task_desc		*pid_to_task[MAX_PID];
+
+static struct task_desc		**tasks;
+
+static pthread_mutex_t		start_work_mutex = PTHREAD_MUTEX_INITIALIZER;
+static u64			start_time;
+
+static pthread_mutex_t		work_done_wait_mutex = PTHREAD_MUTEX_INITIALIZER;
+
+static unsigned long		nr_run_events;
+static unsigned long		nr_sleep_events;
+static unsigned long		nr_wakeup_events;
+
+static unsigned long		nr_sleep_corrections;
+static unsigned long		nr_run_events_optimized;
+
+static unsigned long		targetless_wakeups;
+static unsigned long		multitarget_wakeups;
+
+static u64			cpu_usage;
+static u64			runavg_cpu_usage;
+static u64			parent_cpu_usage;
+static u64			runavg_parent_cpu_usage;
+
+static unsigned long		nr_runs;
+static u64			sum_runtime;
+static u64			sum_fluct;
+static u64			run_avg;
+
+static unsigned long		replay_repeat = 10;
+static unsigned long		nr_timestamps;
+static unsigned long		nr_unordered_timestamps;
+static unsigned long		nr_state_machine_bugs;
+static unsigned long		nr_context_switch_bugs;
+static unsigned long		nr_events;
+static unsigned long		nr_lost_chunks;
+static unsigned long		nr_lost_events;
+
+#define TASK_STATE_TO_CHAR_STR "RSDTtZX"
+
+enum thread_state {
+	THREAD_SLEEPING = 0,
+	THREAD_WAIT_CPU,
+	THREAD_SCHED_IN,
+	THREAD_IGNORE
+};
+
+struct work_atom {
+	struct list_head	list;
+	enum thread_state	state;
+	u64			sched_out_time;
+	u64			wake_up_time;
+	u64			sched_in_time;
+	u64			runtime;
+};
+
+struct work_atoms {
+	struct list_head	work_list;
+	struct thread		*thread;
+	struct rb_node		node;
+	u64			max_lat;
+	u64			total_lat;
+	u64			nb_atoms;
+	u64			total_runtime;
+};
+
+typedef int (*sort_fn_t)(struct work_atoms *, struct work_atoms *);
+
+static struct rb_root		atom_root, sorted_atom_root;
+
+static u64			all_runtime;
+static u64			all_count;
+
+
+static u64 get_nsecs(void)
+{
+	struct timespec ts;
+
+	clock_gettime(CLOCK_MONOTONIC, &ts);
+
+	return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
+}
+
+static void burn_nsecs(u64 nsecs)
+{
+	u64 T0 = get_nsecs(), T1;
+
+	do {
+		T1 = get_nsecs();
+	} while (T1 + run_measurement_overhead < T0 + nsecs);
+}
+
+static void sleep_nsecs(u64 nsecs)
+{
+	struct timespec ts;
+
+	ts.tv_nsec = nsecs % 999999999;
+	ts.tv_sec = nsecs / 999999999;
+
+	nanosleep(&ts, NULL);
+}
+
+static void calibrate_run_measurement_overhead(void)
+{
+	u64 T0, T1, delta, min_delta = 1000000000ULL;
+	int i;
+
+	for (i = 0; i < 10; i++) {
+		T0 = get_nsecs();
+		burn_nsecs(0);
+		T1 = get_nsecs();
+		delta = T1-T0;
+		min_delta = min(min_delta, delta);
+	}
+	run_measurement_overhead = min_delta;
+
+	printf("run measurement overhead: %Ld nsecs\n", min_delta);
+}
+
+static void calibrate_sleep_measurement_overhead(void)
+{
+	u64 T0, T1, delta, min_delta = 1000000000ULL;
+	int i;
+
+	for (i = 0; i < 10; i++) {
+		T0 = get_nsecs();
+		sleep_nsecs(10000);
+		T1 = get_nsecs();
+		delta = T1-T0;
+		min_delta = min(min_delta, delta);
+	}
+	min_delta -= 10000;
+	sleep_measurement_overhead = min_delta;
+
+	printf("sleep measurement overhead: %Ld nsecs\n", min_delta);
+}
+
+static struct sched_atom *
+get_new_event(struct task_desc *task, u64 timestamp)
+{
+	struct sched_atom *event = calloc(1, sizeof(*event));
+	unsigned long idx = task->nr_events;
+	size_t size;
+
+	event->timestamp = timestamp;
+	event->nr = idx;
+
+	task->nr_events++;
+	size = sizeof(struct sched_atom *) * task->nr_events;
+	task->atoms = realloc(task->atoms, size);
+	BUG_ON(!task->atoms);
+
+	task->atoms[idx] = event;
+
+	return event;
+}
+
+static struct sched_atom *last_event(struct task_desc *task)
+{
+	if (!task->nr_events)
+		return NULL;
+
+	return task->atoms[task->nr_events - 1];
+}
+
+static void
+add_sched_event_run(struct task_desc *task, u64 timestamp, u64 duration)
+{
+	struct sched_atom *event, *curr_event = last_event(task);
+
+	/*
+	 * optimize an existing RUN event by merging this one
+	 * to it:
+	 */
+	if (curr_event && curr_event->type == SCHED_EVENT_RUN) {
+		nr_run_events_optimized++;
+		curr_event->duration += duration;
+		return;
+	}
+
+	event = get_new_event(task, timestamp);
+
+	event->type = SCHED_EVENT_RUN;
+	event->duration = duration;
+
+	nr_run_events++;
+}
+
+static void
+add_sched_event_wakeup(struct task_desc *task, u64 timestamp,
+		       struct task_desc *wakee)
+{
+	struct sched_atom *event, *wakee_event;
+
+	event = get_new_event(task, timestamp);
+	event->type = SCHED_EVENT_WAKEUP;
+	event->wakee = wakee;
+
+	wakee_event = last_event(wakee);
+	if (!wakee_event || wakee_event->type != SCHED_EVENT_SLEEP) {
+		targetless_wakeups++;
+		return;
+	}
+	if (wakee_event->wait_sem) {
+		multitarget_wakeups++;
+		return;
+	}
+
+	wakee_event->wait_sem = calloc(1, sizeof(*wakee_event->wait_sem));
+	sem_init(wakee_event->wait_sem, 0, 0);
+	wakee_event->specific_wait = 1;
+	event->wait_sem = wakee_event->wait_sem;
+
+	nr_wakeup_events++;
+}
+
+static void
+add_sched_event_sleep(struct task_desc *task, u64 timestamp,
+		      u64 task_state __used)
+{
+	struct sched_atom *event = get_new_event(task, timestamp);
+
+	event->type = SCHED_EVENT_SLEEP;
+
+	nr_sleep_events++;
+}
+
+static struct task_desc *register_pid(unsigned long pid, const char *comm)
+{
+	struct task_desc *task;
+
+	BUG_ON(pid >= MAX_PID);
+
+	task = pid_to_task[pid];
+
+	if (task)
+		return task;
+
+	task = calloc(1, sizeof(*task));
+	task->pid = pid;
+	task->nr = nr_tasks;
+	strcpy(task->comm, comm);
+	/*
+	 * every task starts in sleeping state - this gets ignored
+	 * if there's no wakeup pointing to this sleep state:
+	 */
+	add_sched_event_sleep(task, 0, 0);
+
+	pid_to_task[pid] = task;
+	nr_tasks++;
+	tasks = realloc(tasks, nr_tasks*sizeof(struct task_task *));
+	BUG_ON(!tasks);
+	tasks[task->nr] = task;
+
+	if (verbose)
+		printf("registered task #%ld, PID %ld (%s)\n", nr_tasks, pid, comm);
+
+	return task;
+}
+
+
+static void print_task_traces(void)
+{
+	struct task_desc *task;
+	unsigned long i;
+
+	for (i = 0; i < nr_tasks; i++) {
+		task = tasks[i];
+		printf("task %6ld (%20s:%10ld), nr_events: %ld\n",
+			task->nr, task->comm, task->pid, task->nr_events);
+	}
+}
+
+static void add_cross_task_wakeups(void)
+{
+	struct task_desc *task1, *task2;
+	unsigned long i, j;
+
+	for (i = 0; i < nr_tasks; i++) {
+		task1 = tasks[i];
+		j = i + 1;
+		if (j == nr_tasks)
+			j = 0;
+		task2 = tasks[j];
+		add_sched_event_wakeup(task1, 0, task2);
+	}
+}
+
+static void
+process_sched_event(struct task_desc *this_task __used, struct sched_atom *atom)
+{
+	int ret = 0;
+	u64 now;
+	long long delta;
+
+	now = get_nsecs();
+	delta = start_time + atom->timestamp - now;
+
+	switch (atom->type) {
+		case SCHED_EVENT_RUN:
+			burn_nsecs(atom->duration);
+			break;
+		case SCHED_EVENT_SLEEP:
+			if (atom->wait_sem)
+				ret = sem_wait(atom->wait_sem);
+			BUG_ON(ret);
+			break;
+		case SCHED_EVENT_WAKEUP:
+			if (atom->wait_sem)
+				ret = sem_post(atom->wait_sem);
+			BUG_ON(ret);
+			break;
+		default:
+			BUG_ON(1);
+	}
+}
+
+static u64 get_cpu_usage_nsec_parent(void)
+{
+	struct rusage ru;
+	u64 sum;
+	int err;
+
+	err = getrusage(RUSAGE_SELF, &ru);
+	BUG_ON(err);
+
+	sum =  ru.ru_utime.tv_sec*1e9 + ru.ru_utime.tv_usec*1e3;
+	sum += ru.ru_stime.tv_sec*1e9 + ru.ru_stime.tv_usec*1e3;
+
+	return sum;
+}
+
+static u64 get_cpu_usage_nsec_self(void)
+{
+	char filename [] = "/proc/1234567890/sched";
+	unsigned long msecs, nsecs;
+	char *line = NULL;
+	u64 total = 0;
+	size_t len = 0;
+	ssize_t chars;
+	FILE *file;
+	int ret;
+
+	sprintf(filename, "/proc/%d/sched", getpid());
+	file = fopen(filename, "r");
+	BUG_ON(!file);
+
+	while ((chars = getline(&line, &len, file)) != -1) {
+		ret = sscanf(line, "se.sum_exec_runtime : %ld.%06ld\n",
+			&msecs, &nsecs);
+		if (ret == 2) {
+			total = msecs*1e6 + nsecs;
+			break;
+		}
+	}
+	if (line)
+		free(line);
+	fclose(file);
+
+	return total;
+}
+
+static void *thread_func(void *ctx)
+{
+	struct task_desc *this_task = ctx;
+	u64 cpu_usage_0, cpu_usage_1;
+	unsigned long i, ret;
+	char comm2[22];
+
+	sprintf(comm2, ":%s", this_task->comm);
+	prctl(PR_SET_NAME, comm2);
+
+again:
+	ret = sem_post(&this_task->ready_for_work);
+	BUG_ON(ret);
+	ret = pthread_mutex_lock(&start_work_mutex);
+	BUG_ON(ret);
+	ret = pthread_mutex_unlock(&start_work_mutex);
+	BUG_ON(ret);
+
+	cpu_usage_0 = get_cpu_usage_nsec_self();
+
+	for (i = 0; i < this_task->nr_events; i++) {
+		this_task->curr_event = i;
+		process_sched_event(this_task, this_task->atoms[i]);
+	}
+
+	cpu_usage_1 = get_cpu_usage_nsec_self();
+	this_task->cpu_usage = cpu_usage_1 - cpu_usage_0;
+
+	ret = sem_post(&this_task->work_done_sem);
+	BUG_ON(ret);
+
+	ret = pthread_mutex_lock(&work_done_wait_mutex);
+	BUG_ON(ret);
+	ret = pthread_mutex_unlock(&work_done_wait_mutex);
+	BUG_ON(ret);
+
+	goto again;
+}
+
+static void create_tasks(void)
+{
+	struct task_desc *task;
+	pthread_attr_t attr;
+	unsigned long i;
+	int err;
+
+	err = pthread_attr_init(&attr);
+	BUG_ON(err);
+	err = pthread_attr_setstacksize(&attr, (size_t)(16*1024));
+	BUG_ON(err);
+	err = pthread_mutex_lock(&start_work_mutex);
+	BUG_ON(err);
+	err = pthread_mutex_lock(&work_done_wait_mutex);
+	BUG_ON(err);
+	for (i = 0; i < nr_tasks; i++) {
+		task = tasks[i];
+		sem_init(&task->sleep_sem, 0, 0);
+		sem_init(&task->ready_for_work, 0, 0);
+		sem_init(&task->work_done_sem, 0, 0);
+		task->curr_event = 0;
+		err = pthread_create(&task->thread, &attr, thread_func, task);
+		BUG_ON(err);
+	}
+}
+
+static void wait_for_tasks(void)
+{
+	u64 cpu_usage_0, cpu_usage_1;
+	struct task_desc *task;
+	unsigned long i, ret;
+
+	start_time = get_nsecs();
+	cpu_usage = 0;
+	pthread_mutex_unlock(&work_done_wait_mutex);
+
+	for (i = 0; i < nr_tasks; i++) {
+		task = tasks[i];
+		ret = sem_wait(&task->ready_for_work);
+		BUG_ON(ret);
+		sem_init(&task->ready_for_work, 0, 0);
+	}
+	ret = pthread_mutex_lock(&work_done_wait_mutex);
+	BUG_ON(ret);
+
+	cpu_usage_0 = get_cpu_usage_nsec_parent();
+
+	pthread_mutex_unlock(&start_work_mutex);
+
+	for (i = 0; i < nr_tasks; i++) {
+		task = tasks[i];
+		ret = sem_wait(&task->work_done_sem);
+		BUG_ON(ret);
+		sem_init(&task->work_done_sem, 0, 0);
+		cpu_usage += task->cpu_usage;
+		task->cpu_usage = 0;
+	}
+
+	cpu_usage_1 = get_cpu_usage_nsec_parent();
+	if (!runavg_cpu_usage)
+		runavg_cpu_usage = cpu_usage;
+	runavg_cpu_usage = (runavg_cpu_usage*9 + cpu_usage)/10;
+
+	parent_cpu_usage = cpu_usage_1 - cpu_usage_0;
+	if (!runavg_parent_cpu_usage)
+		runavg_parent_cpu_usage = parent_cpu_usage;
+	runavg_parent_cpu_usage = (runavg_parent_cpu_usage*9 +
+				   parent_cpu_usage)/10;
+
+	ret = pthread_mutex_lock(&start_work_mutex);
+	BUG_ON(ret);
+
+	for (i = 0; i < nr_tasks; i++) {
+		task = tasks[i];
+		sem_init(&task->sleep_sem, 0, 0);
+		task->curr_event = 0;
+	}
+}
+
+static void run_one_test(void)
+{
+	u64 T0, T1, delta, avg_delta, fluct, std_dev;
+
+	T0 = get_nsecs();
+	wait_for_tasks();
+	T1 = get_nsecs();
+
+	delta = T1 - T0;
+	sum_runtime += delta;
+	nr_runs++;
+
+	avg_delta = sum_runtime / nr_runs;
+	if (delta < avg_delta)
+		fluct = avg_delta - delta;
+	else
+		fluct = delta - avg_delta;
+	sum_fluct += fluct;
+	std_dev = sum_fluct / nr_runs / sqrt(nr_runs);
+	if (!run_avg)
+		run_avg = delta;
+	run_avg = (run_avg*9 + delta)/10;
+
+	printf("#%-3ld: %0.3f, ",
+		nr_runs, (double)delta/1000000.0);
+
+	printf("ravg: %0.2f, ",
+		(double)run_avg/1e6);
+
+	printf("cpu: %0.2f / %0.2f",
+		(double)cpu_usage/1e6, (double)runavg_cpu_usage/1e6);
+
+#if 0
+	/*
+	 * rusage statistics done by the parent, these are less
+	 * accurate than the sum_exec_runtime based statistics:
+	 */
+	printf(" [%0.2f / %0.2f]",
+		(double)parent_cpu_usage/1e6,
+		(double)runavg_parent_cpu_usage/1e6);
+#endif
+
+	printf("\n");
+
+	if (nr_sleep_corrections)
+		printf(" (%ld sleep corrections)\n", nr_sleep_corrections);
+	nr_sleep_corrections = 0;
+}
+
+static void test_calibrations(void)
+{
+	u64 T0, T1;
+
+	T0 = get_nsecs();
+	burn_nsecs(1e6);
+	T1 = get_nsecs();
+
+	printf("the run test took %Ld nsecs\n", T1-T0);
+
+	T0 = get_nsecs();
+	sleep_nsecs(1e6);
+	T1 = get_nsecs();
+
+	printf("the sleep test took %Ld nsecs\n", T1-T0);
+}
+
+static int
+process_comm_event(event_t *event, unsigned long offset, unsigned long head)
+{
+	struct thread *thread;
+
+	thread = threads__findnew(event->comm.pid, &threads, &last_match);
+
+	dump_printf("%p [%p]: perf_event_comm: %s:%d\n",
+		(void *)(offset + head),
+		(void *)(long)(event->header.size),
+		event->comm.comm, event->comm.pid);
+
+	if (thread == NULL ||
+	    thread__set_comm(thread, event->comm.comm)) {
+		dump_printf("problem processing perf_event_comm, skipping event.\n");
+		return -1;
+	}
+	total_comm++;
+
+	return 0;
+}
+
+
+struct raw_event_sample {
+	u32 size;
+	char data[0];
+};
+
+#define FILL_FIELD(ptr, field, event, data)	\
+	ptr.field = (typeof(ptr.field)) raw_field_value(event, #field, data)
+
+#define FILL_ARRAY(ptr, array, event, data)			\
+do {								\
+	void *__array = raw_field_ptr(event, #array, data);	\
+	memcpy(ptr.array, __array, sizeof(ptr.array));	\
+} while(0)
+
+#define FILL_COMMON_FIELDS(ptr, event, data)			\
+do {								\
+	FILL_FIELD(ptr, common_type, event, data);		\
+	FILL_FIELD(ptr, common_flags, event, data);		\
+	FILL_FIELD(ptr, common_preempt_count, event, data);	\
+	FILL_FIELD(ptr, common_pid, event, data);		\
+	FILL_FIELD(ptr, common_tgid, event, data);		\
+} while (0)
+
+
+
+struct trace_switch_event {
+	u32 size;
+
+	u16 common_type;
+	u8 common_flags;
+	u8 common_preempt_count;
+	u32 common_pid;
+	u32 common_tgid;
+
+	char prev_comm[16];
+	u32 prev_pid;
+	u32 prev_prio;
+	u64 prev_state;
+	char next_comm[16];
+	u32 next_pid;
+	u32 next_prio;
+};
+
+struct trace_runtime_event {
+	u32 size;
+
+	u16 common_type;
+	u8 common_flags;
+	u8 common_preempt_count;
+	u32 common_pid;
+	u32 common_tgid;
+
+	char comm[16];
+	u32 pid;
+	u64 runtime;
+	u64 vruntime;
+};
+
+struct trace_wakeup_event {
+	u32 size;
+
+	u16 common_type;
+	u8 common_flags;
+	u8 common_preempt_count;
+	u32 common_pid;
+	u32 common_tgid;
+
+	char comm[16];
+	u32 pid;
+
+	u32 prio;
+	u32 success;
+	u32 cpu;
+};
+
+struct trace_fork_event {
+	u32 size;
+
+	u16 common_type;
+	u8 common_flags;
+	u8 common_preempt_count;
+	u32 common_pid;
+	u32 common_tgid;
+
+	char parent_comm[16];
+	u32 parent_pid;
+	char child_comm[16];
+	u32 child_pid;
+};
+
+struct trace_sched_handler {
+	void (*switch_event)(struct trace_switch_event *,
+			     struct event *,
+			     int cpu,
+			     u64 timestamp,
+			     struct thread *thread);
+
+	void (*runtime_event)(struct trace_runtime_event *,
+			      struct event *,
+			      int cpu,
+			      u64 timestamp,
+			      struct thread *thread);
+
+	void (*wakeup_event)(struct trace_wakeup_event *,
+			     struct event *,
+			     int cpu,
+			     u64 timestamp,
+			     struct thread *thread);
+
+	void (*fork_event)(struct trace_fork_event *,
+			   struct event *,
+			   int cpu,
+			   u64 timestamp,
+			   struct thread *thread);
+};
+
+
+static void
+replay_wakeup_event(struct trace_wakeup_event *wakeup_event,
+		    struct event *event,
+		    int cpu __used,
+		    u64 timestamp __used,
+		    struct thread *thread __used)
+{
+	struct task_desc *waker, *wakee;
+
+	if (verbose) {
+		printf("sched_wakeup event %p\n", event);
+
+		printf(" ... pid %d woke up %s/%d\n",
+			wakeup_event->common_pid,
+			wakeup_event->comm,
+			wakeup_event->pid);
+	}
+
+	waker = register_pid(wakeup_event->common_pid, "<unknown>");
+	wakee = register_pid(wakeup_event->pid, wakeup_event->comm);
+
+	add_sched_event_wakeup(waker, timestamp, wakee);
+}
+
+static u64 cpu_last_switched[MAX_CPUS];
+
+static void
+replay_switch_event(struct trace_switch_event *switch_event,
+		    struct event *event,
+		    int cpu,
+		    u64 timestamp,
+		    struct thread *thread __used)
+{
+	struct task_desc *prev, *next;
+	u64 timestamp0;
+	s64 delta;
+
+	if (verbose)
+		printf("sched_switch event %p\n", event);
+
+	if (cpu >= MAX_CPUS || cpu < 0)
+		return;
+
+	timestamp0 = cpu_last_switched[cpu];
+	if (timestamp0)
+		delta = timestamp - timestamp0;
+	else
+		delta = 0;
+
+	if (delta < 0)
+		die("hm, delta: %Ld < 0 ?\n", delta);
+
+	if (verbose) {
+		printf(" ... switch from %s/%d to %s/%d [ran %Ld nsecs]\n",
+			switch_event->prev_comm, switch_event->prev_pid,
+			switch_event->next_comm, switch_event->next_pid,
+			delta);
+	}
+
+	prev = register_pid(switch_event->prev_pid, switch_event->prev_comm);
+	next = register_pid(switch_event->next_pid, switch_event->next_comm);
+
+	cpu_last_switched[cpu] = timestamp;
+
+	add_sched_event_run(prev, timestamp, delta);
+	add_sched_event_sleep(prev, timestamp, switch_event->prev_state);
+}
+
+
+static void
+replay_fork_event(struct trace_fork_event *fork_event,
+		  struct event *event,
+		  int cpu __used,
+		  u64 timestamp __used,
+		  struct thread *thread __used)
+{
+	if (verbose) {
+		printf("sched_fork event %p\n", event);
+		printf("... parent: %s/%d\n", fork_event->parent_comm, fork_event->parent_pid);
+		printf("...  child: %s/%d\n", fork_event->child_comm, fork_event->child_pid);
+	}
+	register_pid(fork_event->parent_pid, fork_event->parent_comm);
+	register_pid(fork_event->child_pid, fork_event->child_comm);
+}
+
+static struct trace_sched_handler replay_ops  = {
+	.wakeup_event		= replay_wakeup_event,
+	.switch_event		= replay_switch_event,
+	.fork_event		= replay_fork_event,
+};
+
+struct sort_dimension {
+	const char		*name;
+	sort_fn_t		cmp;
+	struct list_head	list;
+};
+
+static LIST_HEAD(cmp_pid);
+
+static int
+thread_lat_cmp(struct list_head *list, struct work_atoms *l, struct work_atoms *r)
+{
+	struct sort_dimension *sort;
+	int ret = 0;
+
+	BUG_ON(list_empty(list));
+
+	list_for_each_entry(sort, list, list) {
+		ret = sort->cmp(l, r);
+		if (ret)
+			return ret;
+	}
+
+	return ret;
+}
+
+static struct work_atoms *
+thread_atoms_search(struct rb_root *root, struct thread *thread,
+			 struct list_head *sort_list)
+{
+	struct rb_node *node = root->rb_node;
+	struct work_atoms key = { .thread = thread };
+
+	while (node) {
+		struct work_atoms *atoms;
+		int cmp;
+
+		atoms = container_of(node, struct work_atoms, node);
+
+		cmp = thread_lat_cmp(sort_list, &key, atoms);
+		if (cmp > 0)
+			node = node->rb_left;
+		else if (cmp < 0)
+			node = node->rb_right;
+		else {
+			BUG_ON(thread != atoms->thread);
+			return atoms;
+		}
+	}
+	return NULL;
+}
+
+static void
+__thread_latency_insert(struct rb_root *root, struct work_atoms *data,
+			 struct list_head *sort_list)
+{
+	struct rb_node **new = &(root->rb_node), *parent = NULL;
+
+	while (*new) {
+		struct work_atoms *this;
+		int cmp;
+
+		this = container_of(*new, struct work_atoms, node);
+		parent = *new;
+
+		cmp = thread_lat_cmp(sort_list, data, this);
+
+		if (cmp > 0)
+			new = &((*new)->rb_left);
+		else
+			new = &((*new)->rb_right);
+	}
+
+	rb_link_node(&data->node, parent, new);
+	rb_insert_color(&data->node, root);
+}
+
+static void thread_atoms_insert(struct thread *thread)
+{
+	struct work_atoms *atoms;
+
+	atoms = calloc(sizeof(*atoms), 1);
+	if (!atoms)
+		die("No memory");
+
+	atoms->thread = thread;
+	INIT_LIST_HEAD(&atoms->work_list);
+	__thread_latency_insert(&atom_root, atoms, &cmp_pid);
+}
+
+static void
+latency_fork_event(struct trace_fork_event *fork_event __used,
+		   struct event *event __used,
+		   int cpu __used,
+		   u64 timestamp __used,
+		   struct thread *thread __used)
+{
+	/* should insert the newcomer */
+}
+
+__used
+static char sched_out_state(struct trace_switch_event *switch_event)
+{
+	const char *str = TASK_STATE_TO_CHAR_STR;
+
+	return str[switch_event->prev_state];
+}
+
+static void
+add_sched_out_event(struct work_atoms *atoms,
+		    char run_state,
+		    u64 timestamp)
+{
+	struct work_atom *atom;
+
+	atom = calloc(sizeof(*atom), 1);
+	if (!atom)
+		die("Non memory");
+
+	atom->sched_out_time = timestamp;
+
+	if (run_state == 'R') {
+		atom->state = THREAD_WAIT_CPU;
+		atom->wake_up_time = atom->sched_out_time;
+	}
+
+	list_add_tail(&atom->list, &atoms->work_list);
+}
+
+static void
+add_runtime_event(struct work_atoms *atoms, u64 delta, u64 timestamp __used)
+{
+	struct work_atom *atom;
+
+	BUG_ON(list_empty(&atoms->work_list));
+
+	atom = list_entry(atoms->work_list.prev, struct work_atom, list);
+
+	atom->runtime += delta;
+	atoms->total_runtime += delta;
+}
+
+static void
+add_sched_in_event(struct work_atoms *atoms, u64 timestamp)
+{
+	struct work_atom *atom;
+	u64 delta;
+
+	if (list_empty(&atoms->work_list))
+		return;
+
+	atom = list_entry(atoms->work_list.prev, struct work_atom, list);
+
+	if (atom->state != THREAD_WAIT_CPU)
+		return;
+
+	if (timestamp < atom->wake_up_time) {
+		atom->state = THREAD_IGNORE;
+		return;
+	}
+
+	atom->state = THREAD_SCHED_IN;
+	atom->sched_in_time = timestamp;
+
+	delta = atom->sched_in_time - atom->wake_up_time;
+	atoms->total_lat += delta;
+	if (delta > atoms->max_lat)
+		atoms->max_lat = delta;
+	atoms->nb_atoms++;
+}
+
+static void
+latency_switch_event(struct trace_switch_event *switch_event,
+		     struct event *event __used,
+		     int cpu,
+		     u64 timestamp,
+		     struct thread *thread __used)
+{
+	struct work_atoms *out_events, *in_events;
+	struct thread *sched_out, *sched_in;
+	u64 timestamp0;
+	s64 delta;
+
+	BUG_ON(cpu >= MAX_CPUS || cpu < 0);
+
+	timestamp0 = cpu_last_switched[cpu];
+	cpu_last_switched[cpu] = timestamp;
+	if (timestamp0)
+		delta = timestamp - timestamp0;
+	else
+		delta = 0;
+
+	if (delta < 0)
+		die("hm, delta: %Ld < 0 ?\n", delta);
+
+
+	sched_out = threads__findnew(switch_event->prev_pid, &threads, &last_match);
+	sched_in = threads__findnew(switch_event->next_pid, &threads, &last_match);
+
+	out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid);
+	if (!out_events) {
+		thread_atoms_insert(sched_out);
+		out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid);
+		if (!out_events)
+			die("out-event: Internal tree error");
+	}
+	add_sched_out_event(out_events, sched_out_state(switch_event), timestamp);
+
+	in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid);
+	if (!in_events) {
+		thread_atoms_insert(sched_in);
+		in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid);
+		if (!in_events)
+			die("in-event: Internal tree error");
+		/*
+		 * Take came in we have not heard about yet,
+		 * add in an initial atom in runnable state:
+		 */
+		add_sched_out_event(in_events, 'R', timestamp);
+	}
+	add_sched_in_event(in_events, timestamp);
+}
+
+static void
+latency_runtime_event(struct trace_runtime_event *runtime_event,
+		     struct event *event __used,
+		     int cpu,
+		     u64 timestamp,
+		     struct thread *this_thread __used)
+{
+	struct work_atoms *atoms;
+	struct thread *thread;
+
+	BUG_ON(cpu >= MAX_CPUS || cpu < 0);
+
+	thread = threads__findnew(runtime_event->pid, &threads, &last_match);
+	atoms = thread_atoms_search(&atom_root, thread, &cmp_pid);
+	if (!atoms) {
+		thread_atoms_insert(thread);
+		atoms = thread_atoms_search(&atom_root, thread, &cmp_pid);
+		if (!atoms)
+			die("in-event: Internal tree error");
+		add_sched_out_event(atoms, 'R', timestamp);
+	}
+
+	add_runtime_event(atoms, runtime_event->runtime, timestamp);
+}
+
+static void
+latency_wakeup_event(struct trace_wakeup_event *wakeup_event,
+		     struct event *__event __used,
+		     int cpu __used,
+		     u64 timestamp,
+		     struct thread *thread __used)
+{
+	struct work_atoms *atoms;
+	struct work_atom *atom;
+	struct thread *wakee;
+
+	/* Note for later, it may be interesting to observe the failing cases */
+	if (!wakeup_event->success)
+		return;
+
+	wakee = threads__findnew(wakeup_event->pid, &threads, &last_match);
+	atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid);
+	if (!atoms) {
+		thread_atoms_insert(wakee);
+		atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid);
+		if (!atoms)
+			die("wakeup-event: Internal tree error");
+		add_sched_out_event(atoms, 'S', timestamp);
+	}
+
+	BUG_ON(list_empty(&atoms->work_list));
+
+	atom = list_entry(atoms->work_list.prev, struct work_atom, list);
+
+	if (atom->state != THREAD_SLEEPING)
+		nr_state_machine_bugs++;
+
+	nr_timestamps++;
+	if (atom->sched_out_time > timestamp) {
+		nr_unordered_timestamps++;
+		return;
+	}
+
+	atom->state = THREAD_WAIT_CPU;
+	atom->wake_up_time = timestamp;
+}
+
+static struct trace_sched_handler lat_ops  = {
+	.wakeup_event		= latency_wakeup_event,
+	.switch_event		= latency_switch_event,
+	.runtime_event		= latency_runtime_event,
+	.fork_event		= latency_fork_event,
+};
+
+static void output_lat_thread(struct work_atoms *work_list)
+{
+	int i;
+	int ret;
+	u64 avg;
+
+	if (!work_list->nb_atoms)
+		return;
+	/*
+	 * Ignore idle threads:
+	 */
+	if (!strcmp(work_list->thread->comm, "swapper"))
+		return;
+
+	all_runtime += work_list->total_runtime;
+	all_count += work_list->nb_atoms;
+
+	ret = printf("  %s:%d ", work_list->thread->comm, work_list->thread->pid);
+
+	for (i = 0; i < 24 - ret; i++)
+		printf(" ");
+
+	avg = work_list->total_lat / work_list->nb_atoms;
+
+	printf("|%11.3f ms |%9llu | avg:%9.3f ms | max:%9.3f ms |\n",
+	      (double)work_list->total_runtime / 1e6,
+		 work_list->nb_atoms, (double)avg / 1e6,
+		 (double)work_list->max_lat / 1e6);
+}
+
+static int pid_cmp(struct work_atoms *l, struct work_atoms *r)
+{
+	if (l->thread->pid < r->thread->pid)
+		return -1;
+	if (l->thread->pid > r->thread->pid)
+		return 1;
+
+	return 0;
+}
+
+static struct sort_dimension pid_sort_dimension = {
+	.name			= "pid",
+	.cmp			= pid_cmp,
+};
+
+static int avg_cmp(struct work_atoms *l, struct work_atoms *r)
+{
+	u64 avgl, avgr;
+
+	if (!l->nb_atoms)
+		return -1;
+
+	if (!r->nb_atoms)
+		return 1;
+
+	avgl = l->total_lat / l->nb_atoms;
+	avgr = r->total_lat / r->nb_atoms;
+
+	if (avgl < avgr)
+		return -1;
+	if (avgl > avgr)
+		return 1;
+
+	return 0;
+}
+
+static struct sort_dimension avg_sort_dimension = {
+	.name			= "avg",
+	.cmp			= avg_cmp,
+};
+
+static int max_cmp(struct work_atoms *l, struct work_atoms *r)
+{
+	if (l->max_lat < r->max_lat)
+		return -1;
+	if (l->max_lat > r->max_lat)
+		return 1;
+
+	return 0;
+}
+
+static struct sort_dimension max_sort_dimension = {
+	.name			= "max",
+	.cmp			= max_cmp,
+};
+
+static int switch_cmp(struct work_atoms *l, struct work_atoms *r)
+{
+	if (l->nb_atoms < r->nb_atoms)
+		return -1;
+	if (l->nb_atoms > r->nb_atoms)
+		return 1;
+
+	return 0;
+}
+
+static struct sort_dimension switch_sort_dimension = {
+	.name			= "switch",
+	.cmp			= switch_cmp,
+};
+
+static int runtime_cmp(struct work_atoms *l, struct work_atoms *r)
+{
+	if (l->total_runtime < r->total_runtime)
+		return -1;
+	if (l->total_runtime > r->total_runtime)
+		return 1;
+
+	return 0;
+}
+
+static struct sort_dimension runtime_sort_dimension = {
+	.name			= "runtime",
+	.cmp			= runtime_cmp,
+};
+
+static struct sort_dimension *available_sorts[] = {
+	&pid_sort_dimension,
+	&avg_sort_dimension,
+	&max_sort_dimension,
+	&switch_sort_dimension,
+	&runtime_sort_dimension,
+};
+
+#define NB_AVAILABLE_SORTS	(int)(sizeof(available_sorts) / sizeof(struct sort_dimension *))
+
+static LIST_HEAD(sort_list);
+
+static int sort_dimension__add(char *tok, struct list_head *list)
+{
+	int i;
+
+	for (i = 0; i < NB_AVAILABLE_SORTS; i++) {
+		if (!strcmp(available_sorts[i]->name, tok)) {
+			list_add_tail(&available_sorts[i]->list, list);
+
+			return 0;
+		}
+	}
+
+	return -1;
+}
+
+static void setup_sorting(void);
+
+static void sort_lat(void)
+{
+	struct rb_node *node;
+
+	for (;;) {
+		struct work_atoms *data;
+		node = rb_first(&atom_root);
+		if (!node)
+			break;
+
+		rb_erase(node, &atom_root);
+		data = rb_entry(node, struct work_atoms, node);
+		__thread_latency_insert(&sorted_atom_root, data, &sort_list);
+	}
+}
+
+static struct trace_sched_handler *trace_handler;
+
+static void
+process_sched_wakeup_event(struct raw_event_sample *raw,
+			   struct event *event,
+			   int cpu __used,
+			   u64 timestamp __used,
+			   struct thread *thread __used)
+{
+	struct trace_wakeup_event wakeup_event;
+
+	FILL_COMMON_FIELDS(wakeup_event, event, raw->data);
+
+	FILL_ARRAY(wakeup_event, comm, event, raw->data);
+	FILL_FIELD(wakeup_event, pid, event, raw->data);
+	FILL_FIELD(wakeup_event, prio, event, raw->data);
+	FILL_FIELD(wakeup_event, success, event, raw->data);
+	FILL_FIELD(wakeup_event, cpu, event, raw->data);
+
+	if (trace_handler->wakeup_event)
+		trace_handler->wakeup_event(&wakeup_event, event, cpu, timestamp, thread);
+}
+
+/*
+ * Track the current task - that way we can know whether there's any
+ * weird events, such as a task being switched away that is not current.
+ */
+static int max_cpu;
+
+static u32 curr_pid[MAX_CPUS] = { [0 ... MAX_CPUS-1] = -1 };
+
+static struct thread *curr_thread[MAX_CPUS];
+
+static char next_shortname1 = 'A';
+static char next_shortname2 = '0';
+
+static void
+map_switch_event(struct trace_switch_event *switch_event,
+		 struct event *event __used,
+		 int this_cpu,
+		 u64 timestamp,
+		 struct thread *thread __used)
+{
+	struct thread *sched_out, *sched_in;
+	int new_shortname;
+	u64 timestamp0;
+	s64 delta;
+	int cpu;
+
+	BUG_ON(this_cpu >= MAX_CPUS || this_cpu < 0);
+
+	if (this_cpu > max_cpu)
+		max_cpu = this_cpu;
+
+	timestamp0 = cpu_last_switched[this_cpu];
+	cpu_last_switched[this_cpu] = timestamp;
+	if (timestamp0)
+		delta = timestamp - timestamp0;
+	else
+		delta = 0;
+
+	if (delta < 0)
+		die("hm, delta: %Ld < 0 ?\n", delta);
+
+
+	sched_out = threads__findnew(switch_event->prev_pid, &threads, &last_match);
+	sched_in = threads__findnew(switch_event->next_pid, &threads, &last_match);
+
+	curr_thread[this_cpu] = sched_in;
+
+	printf("  ");
+
+	new_shortname = 0;
+	if (!sched_in->shortname[0]) {
+		sched_in->shortname[0] = next_shortname1;
+		sched_in->shortname[1] = next_shortname2;
+
+		if (next_shortname1 < 'Z') {
+			next_shortname1++;
+		} else {
+			next_shortname1='A';
+			if (next_shortname2 < '9') {
+				next_shortname2++;
+			} else {
+				next_shortname2='0';
+			}
+		}
+		new_shortname = 1;
+	}
+
+	for (cpu = 0; cpu <= max_cpu; cpu++) {
+		if (cpu != this_cpu)
+			printf(" ");
+		else
+			printf("*");
+
+		if (curr_thread[cpu]) {
+			if (curr_thread[cpu]->pid)
+				printf("%2s ", curr_thread[cpu]->shortname);
+			else
+				printf(".  ");
+		} else
+			printf("   ");
+	}
+
+	printf("  %12.6f secs ", (double)timestamp/1e9);
+	if (new_shortname) {
+		printf("%s => %s:%d\n",
+			sched_in->shortname, sched_in->comm, sched_in->pid);
+	} else {
+		printf("\n");
+	}
+}
+
+
+static void
+process_sched_switch_event(struct raw_event_sample *raw,
+			   struct event *event,
+			   int this_cpu,
+			   u64 timestamp __used,
+			   struct thread *thread __used)
+{
+	struct trace_switch_event switch_event;
+
+	FILL_COMMON_FIELDS(switch_event, event, raw->data);
+
+	FILL_ARRAY(switch_event, prev_comm, event, raw->data);
+	FILL_FIELD(switch_event, prev_pid, event, raw->data);
+	FILL_FIELD(switch_event, prev_prio, event, raw->data);
+	FILL_FIELD(switch_event, prev_state, event, raw->data);
+	FILL_ARRAY(switch_event, next_comm, event, raw->data);
+	FILL_FIELD(switch_event, next_pid, event, raw->data);
+	FILL_FIELD(switch_event, next_prio, event, raw->data);
+
+	if (curr_pid[this_cpu] != (u32)-1) {
+		/*
+		 * Are we trying to switch away a PID that is
+		 * not current?
+		 */
+		if (curr_pid[this_cpu] != switch_event.prev_pid)
+			nr_context_switch_bugs++;
+	}
+	if (trace_handler->switch_event)
+		trace_handler->switch_event(&switch_event, event, this_cpu, timestamp, thread);
+
+	curr_pid[this_cpu] = switch_event.next_pid;
+}
+
+static void
+process_sched_runtime_event(struct raw_event_sample *raw,
+			   struct event *event,
+			   int cpu __used,
+			   u64 timestamp __used,
+			   struct thread *thread __used)
+{
+	struct trace_runtime_event runtime_event;
+
+	FILL_ARRAY(runtime_event, comm, event, raw->data);
+	FILL_FIELD(runtime_event, pid, event, raw->data);
+	FILL_FIELD(runtime_event, runtime, event, raw->data);
+	FILL_FIELD(runtime_event, vruntime, event, raw->data);
+
+	if (trace_handler->runtime_event)
+		trace_handler->runtime_event(&runtime_event, event, cpu, timestamp, thread);
+}
+
+static void
+process_sched_fork_event(struct raw_event_sample *raw,
+			 struct event *event,
+			 int cpu __used,
+			 u64 timestamp __used,
+			 struct thread *thread __used)
+{
+	struct trace_fork_event fork_event;
+
+	FILL_COMMON_FIELDS(fork_event, event, raw->data);
+
+	FILL_ARRAY(fork_event, parent_comm, event, raw->data);
+	FILL_FIELD(fork_event, parent_pid, event, raw->data);
+	FILL_ARRAY(fork_event, child_comm, event, raw->data);
+	FILL_FIELD(fork_event, child_pid, event, raw->data);
+
+	if (trace_handler->fork_event)
+		trace_handler->fork_event(&fork_event, event, cpu, timestamp, thread);
+}
+
+static void
+process_sched_exit_event(struct event *event,
+			 int cpu __used,
+			 u64 timestamp __used,
+			 struct thread *thread __used)
+{
+	if (verbose)
+		printf("sched_exit event %p\n", event);
+}
+
+static void
+process_raw_event(event_t *raw_event __used, void *more_data,
+		  int cpu, u64 timestamp, struct thread *thread)
+{
+	struct raw_event_sample *raw = more_data;
+	struct event *event;
+	int type;
+
+	type = trace_parse_common_type(raw->data);
+	event = trace_find_event(type);
+
+	if (!strcmp(event->name, "sched_switch"))
+		process_sched_switch_event(raw, event, cpu, timestamp, thread);
+	if (!strcmp(event->name, "sched_stat_runtime"))
+		process_sched_runtime_event(raw, event, cpu, timestamp, thread);
+	if (!strcmp(event->name, "sched_wakeup"))
+		process_sched_wakeup_event(raw, event, cpu, timestamp, thread);
+	if (!strcmp(event->name, "sched_wakeup_new"))
+		process_sched_wakeup_event(raw, event, cpu, timestamp, thread);
+	if (!strcmp(event->name, "sched_process_fork"))
+		process_sched_fork_event(raw, event, cpu, timestamp, thread);
+	if (!strcmp(event->name, "sched_process_exit"))
+		process_sched_exit_event(event, cpu, timestamp, thread);
+}
+
+static int
+process_sample_event(event_t *event, unsigned long offset, unsigned long head)
+{
+	char level;
+	int show = 0;
+	struct dso *dso = NULL;
+	struct thread *thread;
+	u64 ip = event->ip.ip;
+	u64 timestamp = -1;
+	u32 cpu = -1;
+	u64 period = 1;
+	void *more_data = event->ip.__more_data;
+	int cpumode;
+
+	thread = threads__findnew(event->ip.pid, &threads, &last_match);
+
+	if (sample_type & PERF_SAMPLE_TIME) {
+		timestamp = *(u64 *)more_data;
+		more_data += sizeof(u64);
+	}
+
+	if (sample_type & PERF_SAMPLE_CPU) {
+		cpu = *(u32 *)more_data;
+		more_data += sizeof(u32);
+		more_data += sizeof(u32); /* reserved */
+	}
+
+	if (sample_type & PERF_SAMPLE_PERIOD) {
+		period = *(u64 *)more_data;
+		more_data += sizeof(u64);
+	}
+
+	dump_printf("%p [%p]: PERF_EVENT_SAMPLE (IP, %d): %d/%d: %p period: %Ld\n",
+		(void *)(offset + head),
+		(void *)(long)(event->header.size),
+		event->header.misc,
+		event->ip.pid, event->ip.tid,
+		(void *)(long)ip,
+		(long long)period);
+
+	dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
+
+	if (thread == NULL) {
+		eprintf("problem processing %d event, skipping it.\n",
+			event->header.type);
+		return -1;
+	}
+
+	cpumode = event->header.misc & PERF_EVENT_MISC_CPUMODE_MASK;
+
+	if (cpumode == PERF_EVENT_MISC_KERNEL) {
+		show = SHOW_KERNEL;
+		level = 'k';
+
+		dso = kernel_dso;
+
+		dump_printf(" ...... dso: %s\n", dso->name);
+
+	} else if (cpumode == PERF_EVENT_MISC_USER) {
+
+		show = SHOW_USER;
+		level = '.';
+
+	} else {
+		show = SHOW_HV;
+		level = 'H';
+
+		dso = hypervisor_dso;
+
+		dump_printf(" ...... dso: [hypervisor]\n");
+	}
+
+	if (sample_type & PERF_SAMPLE_RAW)
+		process_raw_event(event, more_data, cpu, timestamp, thread);
+
+	return 0;
+}
+
+static int
+process_event(event_t *event, unsigned long offset, unsigned long head)
+{
+	trace_event(event);
+
+	nr_events++;
+	switch (event->header.type) {
+	case PERF_EVENT_MMAP:
+		return 0;
+	case PERF_EVENT_LOST:
+		nr_lost_chunks++;
+		nr_lost_events += event->lost.lost;
+		return 0;
+
+	case PERF_EVENT_COMM:
+		return process_comm_event(event, offset, head);
+
+	case PERF_EVENT_EXIT ... PERF_EVENT_READ:
+		return 0;
+
+	case PERF_EVENT_SAMPLE:
+		return process_sample_event(event, offset, head);
+
+	case PERF_EVENT_MAX:
+	default:
+		return -1;
+	}
+
+	return 0;
+}
+
+static int read_events(void)
+{
+	int ret, rc = EXIT_FAILURE;
+	unsigned long offset = 0;
+	unsigned long head = 0;
+	struct stat perf_stat;
+	event_t *event;
+	uint32_t size;
+	char *buf;
+
+	trace_report();
+	register_idle_thread(&threads, &last_match);
+
+	input = open(input_name, O_RDONLY);
+	if (input < 0) {
+		perror("failed to open file");
+		exit(-1);
+	}
+
+	ret = fstat(input, &perf_stat);
+	if (ret < 0) {
+		perror("failed to stat file");
+		exit(-1);
+	}
+
+	if (!perf_stat.st_size) {
+		fprintf(stderr, "zero-sized file, nothing to do!\n");
+		exit(0);
+	}
+	header = perf_header__read(input);
+	head = header->data_offset;
+	sample_type = perf_header__sample_type(header);
+
+	if (!(sample_type & PERF_SAMPLE_RAW))
+		die("No trace sample to read. Did you call perf record "
+		    "without -R?");
+
+	if (load_kernel() < 0) {
+		perror("failed to load kernel symbols");
+		return EXIT_FAILURE;
+	}
+
+remap:
+	buf = (char *)mmap(NULL, page_size * mmap_window, PROT_READ,
+			   MAP_SHARED, input, offset);
+	if (buf == MAP_FAILED) {
+		perror("failed to mmap file");
+		exit(-1);
+	}
+
+more:
+	event = (event_t *)(buf + head);
+
+	size = event->header.size;
+	if (!size)
+		size = 8;
+
+	if (head + event->header.size >= page_size * mmap_window) {
+		unsigned long shift = page_size * (head / page_size);
+		int res;
+
+		res = munmap(buf, page_size * mmap_window);
+		assert(res == 0);
+
+		offset += shift;
+		head -= shift;
+		goto remap;
+	}
+
+	size = event->header.size;
+
+
+	if (!size || process_event(event, offset, head) < 0) {
+
+		/*
+		 * assume we lost track of the stream, check alignment, and
+		 * increment a single u64 in the hope to catch on again 'soon'.
+		 */
+
+		if (unlikely(head & 7))
+			head &= ~7ULL;
+
+		size = 8;
+	}
+
+	head += size;
+
+	if (offset + head < (unsigned long)perf_stat.st_size)
+		goto more;
+
+	rc = EXIT_SUCCESS;
+	close(input);
+
+	return rc;
+}
+
+static void print_bad_events(void)
+{
+	if (nr_unordered_timestamps && nr_timestamps) {
+		printf("  INFO: %.3f%% unordered timestamps (%ld out of %ld)\n",
+			(double)nr_unordered_timestamps/(double)nr_timestamps*100.0,
+			nr_unordered_timestamps, nr_timestamps);
+	}
+	if (nr_lost_events && nr_events) {
+		printf("  INFO: %.3f%% lost events (%ld out of %ld, in %ld chunks)\n",
+			(double)nr_lost_events/(double)nr_events*100.0,
+			nr_lost_events, nr_events, nr_lost_chunks);
+	}
+	if (nr_state_machine_bugs && nr_timestamps) {
+		printf("  INFO: %.3f%% state machine bugs (%ld out of %ld)",
+			(double)nr_state_machine_bugs/(double)nr_timestamps*100.0,
+			nr_state_machine_bugs, nr_timestamps);
+		if (nr_lost_events)
+			printf(" (due to lost events?)");
+		printf("\n");
+	}
+	if (nr_context_switch_bugs && nr_timestamps) {
+		printf("  INFO: %.3f%% context switch bugs (%ld out of %ld)",
+			(double)nr_context_switch_bugs/(double)nr_timestamps*100.0,
+			nr_context_switch_bugs, nr_timestamps);
+		if (nr_lost_events)
+			printf(" (due to lost events?)");
+		printf("\n");
+	}
+}
+
+static void __cmd_lat(void)
+{
+	struct rb_node *next;
+
+	setup_pager();
+	read_events();
+	sort_lat();
+
+	printf("\n -----------------------------------------------------------------------------------------\n");
+	printf("  Task                  |   Runtime ms  | Switches | Average delay ms | Maximum delay ms |\n");
+	printf(" -----------------------------------------------------------------------------------------\n");
+
+	next = rb_first(&sorted_atom_root);
+
+	while (next) {
+		struct work_atoms *work_list;
+
+		work_list = rb_entry(next, struct work_atoms, node);
+		output_lat_thread(work_list);
+		next = rb_next(next);
+	}
+
+	printf(" -----------------------------------------------------------------------------------------\n");
+	printf("  TOTAL:                |%11.3f ms |%9Ld |\n",
+		(double)all_runtime/1e6, all_count);
+
+	printf(" ---------------------------------------------------\n");
+
+	print_bad_events();
+	printf("\n");
+
+}
+
+static struct trace_sched_handler map_ops  = {
+	.wakeup_event		= NULL,
+	.switch_event		= map_switch_event,
+	.runtime_event		= NULL,
+	.fork_event		= NULL,
+};
+
+static void __cmd_map(void)
+{
+	max_cpu = sysconf(_SC_NPROCESSORS_CONF);
+
+	setup_pager();
+	read_events();
+	print_bad_events();
+}
+
+static void __cmd_replay(void)
+{
+	unsigned long i;
+
+	calibrate_run_measurement_overhead();
+	calibrate_sleep_measurement_overhead();
+
+	test_calibrations();
+
+	read_events();
+
+	printf("nr_run_events:        %ld\n", nr_run_events);
+	printf("nr_sleep_events:      %ld\n", nr_sleep_events);
+	printf("nr_wakeup_events:     %ld\n", nr_wakeup_events);
+
+	if (targetless_wakeups)
+		printf("target-less wakeups:  %ld\n", targetless_wakeups);
+	if (multitarget_wakeups)
+		printf("multi-target wakeups: %ld\n", multitarget_wakeups);
+	if (nr_run_events_optimized)
+		printf("run atoms optimized: %ld\n",
+			nr_run_events_optimized);
+
+	print_task_traces();
+	add_cross_task_wakeups();
+
+	create_tasks();
+	printf("------------------------------------------------------------\n");
+	for (i = 0; i < replay_repeat; i++)
+		run_one_test();
+}
+
+
+static const char * const sched_usage[] = {
+	"perf sched [<options>] {record|latency|map|replay|trace}",
+	NULL
+};
+
+static const struct option sched_options[] = {
+	OPT_STRING('i', "input", &input_name, "file",
+		    "input file name"),
+	OPT_BOOLEAN('v', "verbose", &verbose,
+		    "be more verbose (show symbol address, etc)"),
+	OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
+		    "dump raw trace in ASCII"),
+	OPT_END()
+};
+
+static const char * const latency_usage[] = {
+	"perf sched latency [<options>]",
+	NULL
+};
+
+static const struct option latency_options[] = {
+	OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
+		   "sort by key(s): runtime, switch, avg, max"),
+	OPT_BOOLEAN('v', "verbose", &verbose,
+		    "be more verbose (show symbol address, etc)"),
+	OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
+		    "dump raw trace in ASCII"),
+	OPT_END()
+};
+
+static const char * const replay_usage[] = {
+	"perf sched replay [<options>]",
+	NULL
+};
+
+static const struct option replay_options[] = {
+	OPT_INTEGER('r', "repeat", &replay_repeat,
+		    "repeat the workload replay N times (-1: infinite)"),
+	OPT_BOOLEAN('v', "verbose", &verbose,
+		    "be more verbose (show symbol address, etc)"),
+	OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
+		    "dump raw trace in ASCII"),
+	OPT_END()
+};
+
+static void setup_sorting(void)
+{
+	char *tmp, *tok, *str = strdup(sort_order);
+
+	for (tok = strtok_r(str, ", ", &tmp);
+			tok; tok = strtok_r(NULL, ", ", &tmp)) {
+		if (sort_dimension__add(tok, &sort_list) < 0) {
+			error("Unknown --sort key: `%s'", tok);
+			usage_with_options(latency_usage, latency_options);
+		}
+	}
+
+	free(str);
+
+	sort_dimension__add((char *)"pid", &cmp_pid);
+}
+
+static const char *record_args[] = {
+	"record",
+	"-a",
+	"-R",
+	"-M",
+	"-f",
+	"-m", "1024",
+	"-c", "1",
+	"-e", "sched:sched_switch:r",
+	"-e", "sched:sched_stat_wait:r",
+	"-e", "sched:sched_stat_sleep:r",
+	"-e", "sched:sched_stat_iowait:r",
+	"-e", "sched:sched_stat_runtime:r",
+	"-e", "sched:sched_process_exit:r",
+	"-e", "sched:sched_process_fork:r",
+	"-e", "sched:sched_wakeup:r",
+	"-e", "sched:sched_migrate_task:r",
+};
+
+static int __cmd_record(int argc, const char **argv)
+{
+	unsigned int rec_argc, i, j;
+	const char **rec_argv;
+
+	rec_argc = ARRAY_SIZE(record_args) + argc - 1;
+	rec_argv = calloc(rec_argc + 1, sizeof(char *));
+
+	for (i = 0; i < ARRAY_SIZE(record_args); i++)
+		rec_argv[i] = strdup(record_args[i]);
+
+	for (j = 1; j < (unsigned int)argc; j++, i++)
+		rec_argv[i] = argv[j];
+
+	BUG_ON(i != rec_argc);
+
+	return cmd_record(i, rec_argv, NULL);
+}
+
+int cmd_sched(int argc, const char **argv, const char *prefix __used)
+{
+	symbol__init();
+	page_size = getpagesize();
+
+	argc = parse_options(argc, argv, sched_options, sched_usage,
+			     PARSE_OPT_STOP_AT_NON_OPTION);
+	if (!argc)
+		usage_with_options(sched_usage, sched_options);
+
+	if (!strncmp(argv[0], "rec", 3)) {
+		return __cmd_record(argc, argv);
+	} else if (!strncmp(argv[0], "lat", 3)) {
+		trace_handler = &lat_ops;
+		if (argc > 1) {
+			argc = parse_options(argc, argv, latency_options, latency_usage, 0);
+			if (argc)
+				usage_with_options(latency_usage, latency_options);
+		}
+		setup_sorting();
+		__cmd_lat();
+	} else if (!strcmp(argv[0], "map")) {
+		trace_handler = &map_ops;
+		setup_sorting();
+		__cmd_map();
+	} else if (!strncmp(argv[0], "rep", 3)) {
+		trace_handler = &replay_ops;
+		if (argc) {
+			argc = parse_options(argc, argv, replay_options, replay_usage, 0);
+			if (argc)
+				usage_with_options(replay_usage, replay_options);
+		}
+		__cmd_replay();
+	} else if (!strcmp(argv[0], "trace")) {
+		/*
+		 * Aliased to 'perf trace' for now:
+		 */
+		return cmd_trace(argc, argv, prefix);
+	} else {
+		usage_with_options(sched_usage, sched_options);
+	}
+
+	return 0;
+}
diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c
new file mode 100644
index 00000000000..60040639627
--- /dev/null
+++ b/tools/perf/builtin-timechart.c
@@ -0,0 +1,1158 @@
+/*
+ * builtin-timechart.c - make an svg timechart of system activity
+ *
+ * (C) Copyright 2009 Intel Corporation
+ *
+ * Authors:
+ *     Arjan van de Ven <arjan@linux.intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; version 2
+ * of the License.
+ */
+
+#include "builtin.h"
+
+#include "util/util.h"
+
+#include "util/color.h"
+#include <linux/list.h>
+#include "util/cache.h"
+#include <linux/rbtree.h>
+#include "util/symbol.h"
+#include "util/string.h"
+#include "util/callchain.h"
+#include "util/strlist.h"
+
+#include "perf.h"
+#include "util/header.h"
+#include "util/parse-options.h"
+#include "util/parse-events.h"
+#include "util/svghelper.h"
+
+static char		const *input_name = "perf.data";
+static char		const *output_name = "output.svg";
+
+
+static unsigned long	page_size;
+static unsigned long	mmap_window = 32;
+static u64		sample_type;
+
+static unsigned int	numcpus;
+static u64		min_freq;	/* Lowest CPU frequency seen */
+static u64		max_freq;	/* Highest CPU frequency seen */
+static u64		turbo_frequency;
+
+static u64		first_time, last_time;
+
+
+static struct perf_header	*header;
+
+struct per_pid;
+struct per_pidcomm;
+
+struct cpu_sample;
+struct power_event;
+struct wake_event;
+
+struct sample_wrapper;
+
+/*
+ * Datastructure layout:
+ * We keep an list of "pid"s, matching the kernels notion of a task struct.
+ * Each "pid" entry, has a list of "comm"s.
+ *	this is because we want to track different programs different, while
+ *	exec will reuse the original pid (by design).
+ * Each comm has a list of samples that will be used to draw
+ * final graph.
+ */
+
+struct per_pid {
+	struct per_pid *next;
+
+	int		pid;
+	int		ppid;
+
+	u64		start_time;
+	u64		end_time;
+	u64		total_time;
+	int		display;
+
+	struct per_pidcomm *all;
+	struct per_pidcomm *current;
+
+	int painted;
+};
+
+
+struct per_pidcomm {
+	struct per_pidcomm *next;
+
+	u64		start_time;
+	u64		end_time;
+	u64		total_time;
+
+	int		Y;
+	int		display;
+
+	long		state;
+	u64		state_since;
+
+	char		*comm;
+
+	struct cpu_sample *samples;
+};
+
+struct sample_wrapper {
+	struct sample_wrapper *next;
+
+	u64		timestamp;
+	unsigned char	data[0];
+};
+
+#define TYPE_NONE	0
+#define TYPE_RUNNING	1
+#define TYPE_WAITING	2
+#define TYPE_BLOCKED	3
+
+struct cpu_sample {
+	struct cpu_sample *next;
+
+	u64 start_time;
+	u64 end_time;
+	int type;
+	int cpu;
+};
+
+static struct per_pid *all_data;
+
+#define CSTATE 1
+#define PSTATE 2
+
+struct power_event {
+	struct power_event *next;
+	int type;
+	int state;
+	u64 start_time;
+	u64 end_time;
+	int cpu;
+};
+
+struct wake_event {
+	struct wake_event *next;
+	int waker;
+	int wakee;
+	u64 time;
+};
+
+static struct power_event    *power_events;
+static struct wake_event     *wake_events;
+
+struct sample_wrapper *all_samples;
+
+static struct per_pid *find_create_pid(int pid)
+{
+	struct per_pid *cursor = all_data;
+
+	while (cursor) {
+		if (cursor->pid == pid)
+			return cursor;
+		cursor = cursor->next;
+	}
+	cursor = malloc(sizeof(struct per_pid));
+	assert(cursor != NULL);
+	memset(cursor, 0, sizeof(struct per_pid));
+	cursor->pid = pid;
+	cursor->next = all_data;
+	all_data = cursor;
+	return cursor;
+}
+
+static void pid_set_comm(int pid, char *comm)
+{
+	struct per_pid *p;
+	struct per_pidcomm *c;
+	p = find_create_pid(pid);
+	c = p->all;
+	while (c) {
+		if (c->comm && strcmp(c->comm, comm) == 0) {
+			p->current = c;
+			return;
+		}
+		if (!c->comm) {
+			c->comm = strdup(comm);
+			p->current = c;
+			return;
+		}
+		c = c->next;
+	}
+	c = malloc(sizeof(struct per_pidcomm));
+	assert(c != NULL);
+	memset(c, 0, sizeof(struct per_pidcomm));
+	c->comm = strdup(comm);
+	p->current = c;
+	c->next = p->all;
+	p->all = c;
+}
+
+static void pid_fork(int pid, int ppid, u64 timestamp)
+{
+	struct per_pid *p, *pp;
+	p = find_create_pid(pid);
+	pp = find_create_pid(ppid);
+	p->ppid = ppid;
+	if (pp->current && pp->current->comm && !p->current)
+		pid_set_comm(pid, pp->current->comm);
+
+	p->start_time = timestamp;
+	if (p->current) {
+		p->current->start_time = timestamp;
+		p->current->state_since = timestamp;
+	}
+}
+
+static void pid_exit(int pid, u64 timestamp)
+{
+	struct per_pid *p;
+	p = find_create_pid(pid);
+	p->end_time = timestamp;
+	if (p->current)
+		p->current->end_time = timestamp;
+}
+
+static void
+pid_put_sample(int pid, int type, unsigned int cpu, u64 start, u64 end)
+{
+	struct per_pid *p;
+	struct per_pidcomm *c;
+	struct cpu_sample *sample;
+
+	p = find_create_pid(pid);
+	c = p->current;
+	if (!c) {
+		c = malloc(sizeof(struct per_pidcomm));
+		assert(c != NULL);
+		memset(c, 0, sizeof(struct per_pidcomm));
+		p->current = c;
+		c->next = p->all;
+		p->all = c;
+	}
+
+	sample = malloc(sizeof(struct cpu_sample));
+	assert(sample != NULL);
+	memset(sample, 0, sizeof(struct cpu_sample));
+	sample->start_time = start;
+	sample->end_time = end;
+	sample->type = type;
+	sample->next = c->samples;
+	sample->cpu = cpu;
+	c->samples = sample;
+
+	if (sample->type == TYPE_RUNNING && end > start && start > 0) {
+		c->total_time += (end-start);
+		p->total_time += (end-start);
+	}
+
+	if (c->start_time == 0 || c->start_time > start)
+		c->start_time = start;
+	if (p->start_time == 0 || p->start_time > start)
+		p->start_time = start;
+
+	if (cpu > numcpus)
+		numcpus = cpu;
+}
+
+#define MAX_CPUS 4096
+
+static u64 cpus_cstate_start_times[MAX_CPUS];
+static int cpus_cstate_state[MAX_CPUS];
+static u64 cpus_pstate_start_times[MAX_CPUS];
+static u64 cpus_pstate_state[MAX_CPUS];
+
+static int
+process_comm_event(event_t *event)
+{
+	pid_set_comm(event->comm.pid, event->comm.comm);
+	return 0;
+}
+static int
+process_fork_event(event_t *event)
+{
+	pid_fork(event->fork.pid, event->fork.ppid, event->fork.time);
+	return 0;
+}
+
+static int
+process_exit_event(event_t *event)
+{
+	pid_exit(event->fork.pid, event->fork.time);
+	return 0;
+}
+
+struct trace_entry {
+	u32			size;
+	unsigned short		type;
+	unsigned char		flags;
+	unsigned char		preempt_count;
+	int			pid;
+	int			tgid;
+};
+
+struct power_entry {
+	struct trace_entry te;
+	s64	type;
+	s64	value;
+};
+
+#define TASK_COMM_LEN 16
+struct wakeup_entry {
+	struct trace_entry te;
+	char comm[TASK_COMM_LEN];
+	int   pid;
+	int   prio;
+	int   success;
+};
+
+/*
+ * trace_flag_type is an enumeration that holds different
+ * states when a trace occurs. These are:
+ *  IRQS_OFF            - interrupts were disabled
+ *  IRQS_NOSUPPORT      - arch does not support irqs_disabled_flags
+ *  NEED_RESCED         - reschedule is requested
+ *  HARDIRQ             - inside an interrupt handler
+ *  SOFTIRQ             - inside a softirq handler
+ */
+enum trace_flag_type {
+	TRACE_FLAG_IRQS_OFF		= 0x01,
+	TRACE_FLAG_IRQS_NOSUPPORT	= 0x02,
+	TRACE_FLAG_NEED_RESCHED		= 0x04,
+	TRACE_FLAG_HARDIRQ		= 0x08,
+	TRACE_FLAG_SOFTIRQ		= 0x10,
+};
+
+
+
+struct sched_switch {
+	struct trace_entry te;
+	char prev_comm[TASK_COMM_LEN];
+	int  prev_pid;
+	int  prev_prio;
+	long prev_state; /* Arjan weeps. */
+	char next_comm[TASK_COMM_LEN];
+	int  next_pid;
+	int  next_prio;
+};
+
+static void c_state_start(int cpu, u64 timestamp, int state)
+{
+	cpus_cstate_start_times[cpu] = timestamp;
+	cpus_cstate_state[cpu] = state;
+}
+
+static void c_state_end(int cpu, u64 timestamp)
+{
+	struct power_event *pwr;
+	pwr = malloc(sizeof(struct power_event));
+	if (!pwr)
+		return;
+	memset(pwr, 0, sizeof(struct power_event));
+
+	pwr->state = cpus_cstate_state[cpu];
+	pwr->start_time = cpus_cstate_start_times[cpu];
+	pwr->end_time = timestamp;
+	pwr->cpu = cpu;
+	pwr->type = CSTATE;
+	pwr->next = power_events;
+
+	power_events = pwr;
+}
+
+static void p_state_change(int cpu, u64 timestamp, u64 new_freq)
+{
+	struct power_event *pwr;
+	pwr = malloc(sizeof(struct power_event));
+
+	if (new_freq > 8000000) /* detect invalid data */
+		return;
+
+	if (!pwr)
+		return;
+	memset(pwr, 0, sizeof(struct power_event));
+
+	pwr->state = cpus_pstate_state[cpu];
+	pwr->start_time = cpus_pstate_start_times[cpu];
+	pwr->end_time = timestamp;
+	pwr->cpu = cpu;
+	pwr->type = PSTATE;
+	pwr->next = power_events;
+
+	if (!pwr->start_time)
+		pwr->start_time = first_time;
+
+	power_events = pwr;
+
+	cpus_pstate_state[cpu] = new_freq;
+	cpus_pstate_start_times[cpu] = timestamp;
+
+	if ((u64)new_freq > max_freq)
+		max_freq = new_freq;
+
+	if (new_freq < min_freq || min_freq == 0)
+		min_freq = new_freq;
+
+	if (new_freq == max_freq - 1000)
+			turbo_frequency = max_freq;
+}
+
+static void
+sched_wakeup(int cpu, u64 timestamp, int pid, struct trace_entry *te)
+{
+	struct wake_event *we;
+	struct per_pid *p;
+	struct wakeup_entry *wake = (void *)te;
+
+	we = malloc(sizeof(struct wake_event));
+	if (!we)
+		return;
+
+	memset(we, 0, sizeof(struct wake_event));
+	we->time = timestamp;
+	we->waker = pid;
+
+	if ((te->flags & TRACE_FLAG_HARDIRQ) || (te->flags & TRACE_FLAG_SOFTIRQ))
+		we->waker = -1;
+
+	we->wakee = wake->pid;
+	we->next = wake_events;
+	wake_events = we;
+	p = find_create_pid(we->wakee);
+
+	if (p && p->current && p->current->state == TYPE_NONE) {
+		p->current->state_since = timestamp;
+		p->current->state = TYPE_WAITING;
+	}
+	if (p && p->current && p->current->state == TYPE_BLOCKED) {
+		pid_put_sample(p->pid, p->current->state, cpu, p->current->state_since, timestamp);
+		p->current->state_since = timestamp;
+		p->current->state = TYPE_WAITING;
+	}
+}
+
+static void sched_switch(int cpu, u64 timestamp, struct trace_entry *te)
+{
+	struct per_pid *p = NULL, *prev_p;
+	struct sched_switch *sw = (void *)te;
+
+
+	prev_p = find_create_pid(sw->prev_pid);
+
+	p = find_create_pid(sw->next_pid);
+
+	if (prev_p->current && prev_p->current->state != TYPE_NONE)
+		pid_put_sample(sw->prev_pid, TYPE_RUNNING, cpu, prev_p->current->state_since, timestamp);
+	if (p && p->current) {
+		if (p->current->state != TYPE_NONE)
+			pid_put_sample(sw->next_pid, p->current->state, cpu, p->current->state_since, timestamp);
+
+			p->current->state_since = timestamp;
+			p->current->state = TYPE_RUNNING;
+	}
+
+	if (prev_p->current) {
+		prev_p->current->state = TYPE_NONE;
+		prev_p->current->state_since = timestamp;
+		if (sw->prev_state & 2)
+			prev_p->current->state = TYPE_BLOCKED;
+		if (sw->prev_state == 0)
+			prev_p->current->state = TYPE_WAITING;
+	}
+}
+
+
+static int
+process_sample_event(event_t *event)
+{
+	int cursor = 0;
+	u64 addr = 0;
+	u64 stamp = 0;
+	u32 cpu = 0;
+	u32 pid = 0;
+	struct trace_entry *te;
+
+	if (sample_type & PERF_SAMPLE_IP)
+		cursor++;
+
+	if (sample_type & PERF_SAMPLE_TID) {
+		pid = event->sample.array[cursor]>>32;
+		cursor++;
+	}
+	if (sample_type & PERF_SAMPLE_TIME) {
+		stamp = event->sample.array[cursor++];
+
+		if (!first_time || first_time > stamp)
+			first_time = stamp;
+		if (last_time < stamp)
+			last_time = stamp;
+
+	}
+	if (sample_type & PERF_SAMPLE_ADDR)
+		addr = event->sample.array[cursor++];
+	if (sample_type & PERF_SAMPLE_ID)
+		cursor++;
+	if (sample_type & PERF_SAMPLE_STREAM_ID)
+		cursor++;
+	if (sample_type & PERF_SAMPLE_CPU)
+		cpu = event->sample.array[cursor++] & 0xFFFFFFFF;
+	if (sample_type & PERF_SAMPLE_PERIOD)
+		cursor++;
+
+	te = (void *)&event->sample.array[cursor];
+
+	if (sample_type & PERF_SAMPLE_RAW && te->size > 0) {
+		char *event_str;
+		struct power_entry *pe;
+
+		pe = (void *)te;
+
+		event_str = perf_header__find_event(te->type);
+
+		if (!event_str)
+			return 0;
+
+		if (strcmp(event_str, "power:power_start") == 0)
+			c_state_start(cpu, stamp, pe->value);
+
+		if (strcmp(event_str, "power:power_end") == 0)
+			c_state_end(cpu, stamp);
+
+		if (strcmp(event_str, "power:power_frequency") == 0)
+			p_state_change(cpu, stamp, pe->value);
+
+		if (strcmp(event_str, "sched:sched_wakeup") == 0)
+			sched_wakeup(cpu, stamp, pid, te);
+
+		if (strcmp(event_str, "sched:sched_switch") == 0)
+			sched_switch(cpu, stamp, te);
+	}
+	return 0;
+}
+
+/*
+ * After the last sample we need to wrap up the current C/P state
+ * and close out each CPU for these.
+ */
+static void end_sample_processing(void)
+{
+	u64 cpu;
+	struct power_event *pwr;
+
+	for (cpu = 0; cpu < numcpus; cpu++) {
+		pwr = malloc(sizeof(struct power_event));
+		if (!pwr)
+			return;
+		memset(pwr, 0, sizeof(struct power_event));
+
+		/* C state */
+#if 0
+		pwr->state = cpus_cstate_state[cpu];
+		pwr->start_time = cpus_cstate_start_times[cpu];
+		pwr->end_time = last_time;
+		pwr->cpu = cpu;
+		pwr->type = CSTATE;
+		pwr->next = power_events;
+
+		power_events = pwr;
+#endif
+		/* P state */
+
+		pwr = malloc(sizeof(struct power_event));
+		if (!pwr)
+			return;
+		memset(pwr, 0, sizeof(struct power_event));
+
+		pwr->state = cpus_pstate_state[cpu];
+		pwr->start_time = cpus_pstate_start_times[cpu];
+		pwr->end_time = last_time;
+		pwr->cpu = cpu;
+		pwr->type = PSTATE;
+		pwr->next = power_events;
+
+		if (!pwr->start_time)
+			pwr->start_time = first_time;
+		if (!pwr->state)
+			pwr->state = min_freq;
+		power_events = pwr;
+	}
+}
+
+static u64 sample_time(event_t *event)
+{
+	int cursor;
+
+	cursor = 0;
+	if (sample_type & PERF_SAMPLE_IP)
+		cursor++;
+	if (sample_type & PERF_SAMPLE_TID)
+		cursor++;
+	if (sample_type & PERF_SAMPLE_TIME)
+		return event->sample.array[cursor];
+	return 0;
+}
+
+
+/*
+ * We first queue all events, sorted backwards by insertion.
+ * The order will get flipped later.
+ */
+static int
+queue_sample_event(event_t *event)
+{
+	struct sample_wrapper *copy, *prev;
+	int size;
+
+	size = event->sample.header.size + sizeof(struct sample_wrapper) + 8;
+
+	copy = malloc(size);
+	if (!copy)
+		return 1;
+
+	memset(copy, 0, size);
+
+	copy->next = NULL;
+	copy->timestamp = sample_time(event);
+
+	memcpy(&copy->data, event, event->sample.header.size);
+
+	/* insert in the right place in the list */
+
+	if (!all_samples) {
+		/* first sample ever */
+		all_samples = copy;
+		return 0;
+	}
+
+	if (all_samples->timestamp < copy->timestamp) {
+		/* insert at the head of the list */
+		copy->next = all_samples;
+		all_samples = copy;
+		return 0;
+	}
+
+	prev = all_samples;
+	while (prev->next) {
+		if (prev->next->timestamp < copy->timestamp) {
+			copy->next = prev->next;
+			prev->next = copy;
+			return 0;
+		}
+		prev = prev->next;
+	}
+	/* insert at the end of the list */
+	prev->next = copy;
+
+	return 0;
+}
+
+static void sort_queued_samples(void)
+{
+	struct sample_wrapper *cursor, *next;
+
+	cursor = all_samples;
+	all_samples = NULL;
+
+	while (cursor) {
+		next = cursor->next;
+		cursor->next = all_samples;
+		all_samples = cursor;
+		cursor = next;
+	}
+}
+
+/*
+ * Sort the pid datastructure
+ */
+static void sort_pids(void)
+{
+	struct per_pid *new_list, *p, *cursor, *prev;
+	/* sort by ppid first, then by pid, lowest to highest */
+
+	new_list = NULL;
+
+	while (all_data) {
+		p = all_data;
+		all_data = p->next;
+		p->next = NULL;
+
+		if (new_list == NULL) {
+			new_list = p;
+			p->next = NULL;
+			continue;
+		}
+		prev = NULL;
+		cursor = new_list;
+		while (cursor) {
+			if (cursor->ppid > p->ppid ||
+				(cursor->ppid == p->ppid && cursor->pid > p->pid)) {
+				/* must insert before */
+				if (prev) {
+					p->next = prev->next;
+					prev->next = p;
+					cursor = NULL;
+					continue;
+				} else {
+					p->next = new_list;
+					new_list = p;
+					cursor = NULL;
+					continue;
+				}
+			}
+
+			prev = cursor;
+			cursor = cursor->next;
+			if (!cursor)
+				prev->next = p;
+		}
+	}
+	all_data = new_list;
+}
+
+
+static void draw_c_p_states(void)
+{
+	struct power_event *pwr;
+	pwr = power_events;
+
+	/*
+	 * two pass drawing so that the P state bars are on top of the C state blocks
+	 */
+	while (pwr) {
+		if (pwr->type == CSTATE)
+			svg_cstate(pwr->cpu, pwr->start_time, pwr->end_time, pwr->state);
+		pwr = pwr->next;
+	}
+
+	pwr = power_events;
+	while (pwr) {
+		if (pwr->type == PSTATE) {
+			if (!pwr->state)
+				pwr->state = min_freq;
+			svg_pstate(pwr->cpu, pwr->start_time, pwr->end_time, pwr->state);
+		}
+		pwr = pwr->next;
+	}
+}
+
+static void draw_wakeups(void)
+{
+	struct wake_event *we;
+	struct per_pid *p;
+	struct per_pidcomm *c;
+
+	we = wake_events;
+	while (we) {
+		int from = 0, to = 0;
+		char *task_from = NULL, *task_to = NULL;
+
+		/* locate the column of the waker and wakee */
+		p = all_data;
+		while (p) {
+			if (p->pid == we->waker || p->pid == we->wakee) {
+				c = p->all;
+				while (c) {
+					if (c->Y && c->start_time <= we->time && c->end_time >= we->time) {
+						if (p->pid == we->waker) {
+							from = c->Y;
+							task_from = c->comm;
+						}
+						if (p->pid == we->wakee) {
+							to = c->Y;
+							task_to = c->comm;
+						}
+					}
+					c = c->next;
+				}
+			}
+			p = p->next;
+		}
+
+		if (we->waker == -1)
+			svg_interrupt(we->time, to);
+		else if (from && to && abs(from - to) == 1)
+			svg_wakeline(we->time, from, to);
+		else
+			svg_partial_wakeline(we->time, from, task_from, to, task_to);
+		we = we->next;
+	}
+}
+
+static void draw_cpu_usage(void)
+{
+	struct per_pid *p;
+	struct per_pidcomm *c;
+	struct cpu_sample *sample;
+	p = all_data;
+	while (p) {
+		c = p->all;
+		while (c) {
+			sample = c->samples;
+			while (sample) {
+				if (sample->type == TYPE_RUNNING)
+					svg_process(sample->cpu, sample->start_time, sample->end_time, "sample", c->comm);
+
+				sample = sample->next;
+			}
+			c = c->next;
+		}
+		p = p->next;
+	}
+}
+
+static void draw_process_bars(void)
+{
+	struct per_pid *p;
+	struct per_pidcomm *c;
+	struct cpu_sample *sample;
+	int Y = 0;
+
+	Y = 2 * numcpus + 2;
+
+	p = all_data;
+	while (p) {
+		c = p->all;
+		while (c) {
+			if (!c->display) {
+				c->Y = 0;
+				c = c->next;
+				continue;
+			}
+
+			svg_box(Y, c->start_time, c->end_time, "process");
+			sample = c->samples;
+			while (sample) {
+				if (sample->type == TYPE_RUNNING)
+					svg_sample(Y, sample->cpu, sample->start_time, sample->end_time);
+				if (sample->type == TYPE_BLOCKED)
+					svg_box(Y, sample->start_time, sample->end_time, "blocked");
+				if (sample->type == TYPE_WAITING)
+					svg_waiting(Y, sample->start_time, sample->end_time);
+				sample = sample->next;
+			}
+
+			if (c->comm) {
+				char comm[256];
+				if (c->total_time > 5000000000) /* 5 seconds */
+					sprintf(comm, "%s:%i (%2.2fs)", c->comm, p->pid, c->total_time / 1000000000.0);
+				else
+					sprintf(comm, "%s:%i (%3.1fms)", c->comm, p->pid, c->total_time / 1000000.0);
+
+				svg_text(Y, c->start_time, comm);
+			}
+			c->Y = Y;
+			Y++;
+			c = c->next;
+		}
+		p = p->next;
+	}
+}
+
+static int determine_display_tasks(u64 threshold)
+{
+	struct per_pid *p;
+	struct per_pidcomm *c;
+	int count = 0;
+
+	p = all_data;
+	while (p) {
+		p->display = 0;
+		if (p->start_time == 1)
+			p->start_time = first_time;
+
+		/* no exit marker, task kept running to the end */
+		if (p->end_time == 0)
+			p->end_time = last_time;
+		if (p->total_time >= threshold)
+			p->display = 1;
+
+		c = p->all;
+
+		while (c) {
+			c->display = 0;
+
+			if (c->start_time == 1)
+				c->start_time = first_time;
+
+			if (c->total_time >= threshold) {
+				c->display = 1;
+				count++;
+			}
+
+			if (c->end_time == 0)
+				c->end_time = last_time;
+
+			c = c->next;
+		}
+		p = p->next;
+	}
+	return count;
+}
+
+
+
+#define TIME_THRESH 10000000
+
+static void write_svg_file(const char *filename)
+{
+	u64 i;
+	int count;
+
+	numcpus++;
+
+
+	count = determine_display_tasks(TIME_THRESH);
+
+	/* We'd like to show at least 15 tasks; be less picky if we have fewer */
+	if (count < 15)
+		count = determine_display_tasks(TIME_THRESH / 10);
+
+	open_svg(filename, numcpus, count, first_time, last_time);
+
+	svg_time_grid();
+	svg_legenda();
+
+	for (i = 0; i < numcpus; i++)
+		svg_cpu_box(i, max_freq, turbo_frequency);
+
+	draw_cpu_usage();
+	draw_process_bars();
+	draw_c_p_states();
+	draw_wakeups();
+
+	svg_close();
+}
+
+static int
+process_event(event_t *event)
+{
+
+	switch (event->header.type) {
+
+	case PERF_EVENT_COMM:
+		return process_comm_event(event);
+	case PERF_EVENT_FORK:
+		return process_fork_event(event);
+	case PERF_EVENT_EXIT:
+		return process_exit_event(event);
+	case PERF_EVENT_SAMPLE:
+		return queue_sample_event(event);
+
+	/*
+	 * We dont process them right now but they are fine:
+	 */
+	case PERF_EVENT_MMAP:
+	case PERF_EVENT_THROTTLE:
+	case PERF_EVENT_UNTHROTTLE:
+		return 0;
+
+	default:
+		return -1;
+	}
+
+	return 0;
+}
+
+static void process_samples(void)
+{
+	struct sample_wrapper *cursor;
+	event_t *event;
+
+	sort_queued_samples();
+
+	cursor = all_samples;
+	while (cursor) {
+		event = (void *)&cursor->data;
+		cursor = cursor->next;
+		process_sample_event(event);
+	}
+}
+
+
+static int __cmd_timechart(void)
+{
+	int ret, rc = EXIT_FAILURE;
+	unsigned long offset = 0;
+	unsigned long head, shift;
+	struct stat statbuf;
+	event_t *event;
+	uint32_t size;
+	char *buf;
+	int input;
+
+	input = open(input_name, O_RDONLY);
+	if (input < 0) {
+		fprintf(stderr, " failed to open file: %s", input_name);
+		if (!strcmp(input_name, "perf.data"))
+			fprintf(stderr, "  (try 'perf record' first)");
+		fprintf(stderr, "\n");
+		exit(-1);
+	}
+
+	ret = fstat(input, &statbuf);
+	if (ret < 0) {
+		perror("failed to stat file");
+		exit(-1);
+	}
+
+	if (!statbuf.st_size) {
+		fprintf(stderr, "zero-sized file, nothing to do!\n");
+		exit(0);
+	}
+
+	header = perf_header__read(input);
+	head = header->data_offset;
+
+	sample_type = perf_header__sample_type(header);
+
+	shift = page_size * (head / page_size);
+	offset += shift;
+	head -= shift;
+
+remap:
+	buf = (char *)mmap(NULL, page_size * mmap_window, PROT_READ,
+			   MAP_SHARED, input, offset);
+	if (buf == MAP_FAILED) {
+		perror("failed to mmap file");
+		exit(-1);
+	}
+
+more:
+	event = (event_t *)(buf + head);
+
+	size = event->header.size;
+	if (!size)
+		size = 8;
+
+	if (head + event->header.size >= page_size * mmap_window) {
+		int ret2;
+
+		shift = page_size * (head / page_size);
+
+		ret2 = munmap(buf, page_size * mmap_window);
+		assert(ret2 == 0);
+
+		offset += shift;
+		head -= shift;
+		goto remap;
+	}
+
+	size = event->header.size;
+
+	if (!size || process_event(event) < 0) {
+
+		printf("%p [%p]: skipping unknown header type: %d\n",
+			(void *)(offset + head),
+			(void *)(long)(event->header.size),
+			event->header.type);
+
+		/*
+		 * assume we lost track of the stream, check alignment, and
+		 * increment a single u64 in the hope to catch on again 'soon'.
+		 */
+
+		if (unlikely(head & 7))
+			head &= ~7ULL;
+
+		size = 8;
+	}
+
+	head += size;
+
+	if (offset + head >= header->data_offset + header->data_size)
+		goto done;
+
+	if (offset + head < (unsigned long)statbuf.st_size)
+		goto more;
+
+done:
+	rc = EXIT_SUCCESS;
+	close(input);
+
+
+	process_samples();
+
+	end_sample_processing();
+
+	sort_pids();
+
+	write_svg_file(output_name);
+
+	printf("Written %2.1f seconds of trace to %s.\n", (last_time - first_time) / 1000000000.0, output_name);
+
+	return rc;
+}
+
+static const char * const timechart_usage[] = {
+	"perf timechart [<options>] {record}",
+	NULL
+};
+
+static const char *record_args[] = {
+	"record",
+	"-a",
+	"-R",
+	"-M",
+	"-f",
+	"-c", "1",
+	"-e", "power:power_start",
+	"-e", "power:power_end",
+	"-e", "power:power_frequency",
+	"-e", "sched:sched_wakeup",
+	"-e", "sched:sched_switch",
+};
+
+static int __cmd_record(int argc, const char **argv)
+{
+	unsigned int rec_argc, i, j;
+	const char **rec_argv;
+
+	rec_argc = ARRAY_SIZE(record_args) + argc - 1;
+	rec_argv = calloc(rec_argc + 1, sizeof(char *));
+
+	for (i = 0; i < ARRAY_SIZE(record_args); i++)
+		rec_argv[i] = strdup(record_args[i]);
+
+	for (j = 1; j < (unsigned int)argc; j++, i++)
+		rec_argv[i] = argv[j];
+
+	return cmd_record(i, rec_argv, NULL);
+}
+
+static const struct option options[] = {
+	OPT_STRING('i', "input", &input_name, "file",
+		    "input file name"),
+	OPT_STRING('o', "output", &output_name, "file",
+		    "output file name"),
+	OPT_INTEGER('w', "width", &svg_page_width,
+		    "page width"),
+	OPT_END()
+};
+
+
+int cmd_timechart(int argc, const char **argv, const char *prefix __used)
+{
+	symbol__init();
+
+	page_size = getpagesize();
+
+	argc = parse_options(argc, argv, options, timechart_usage,
+			PARSE_OPT_STOP_AT_NON_OPTION);
+
+	if (argc && !strncmp(argv[0], "rec", 3))
+		return __cmd_record(argc, argv);
+	else if (argc)
+		usage_with_options(timechart_usage, options);
+
+	setup_pager();
+
+	return __cmd_timechart();
+}
diff --git a/tools/perf/builtin.h b/tools/perf/builtin.h
index 3a63e41fb44..e11d8d231c3 100644
--- a/tools/perf/builtin.h
+++ b/tools/perf/builtin.h
@@ -16,12 +16,14 @@ extern int check_pager_config(const char *cmd);
 
 extern int cmd_annotate(int argc, const char **argv, const char *prefix);
 extern int cmd_help(int argc, const char **argv, const char *prefix);
+extern int cmd_sched(int argc, const char **argv, const char *prefix);
+extern int cmd_list(int argc, const char **argv, const char *prefix);
 extern int cmd_record(int argc, const char **argv, const char *prefix);
 extern int cmd_report(int argc, const char **argv, const char *prefix);
 extern int cmd_stat(int argc, const char **argv, const char *prefix);
+extern int cmd_timechart(int argc, const char **argv, const char *prefix);
 extern int cmd_top(int argc, const char **argv, const char *prefix);
-extern int cmd_version(int argc, const char **argv, const char *prefix);
-extern int cmd_list(int argc, const char **argv, const char *prefix);
 extern int cmd_trace(int argc, const char **argv, const char *prefix);
+extern int cmd_version(int argc, const char **argv, const char *prefix);
 
 #endif
diff --git a/tools/perf/command-list.txt b/tools/perf/command-list.txt
index eebce30afbc..00326e230d8 100644
--- a/tools/perf/command-list.txt
+++ b/tools/perf/command-list.txt
@@ -4,7 +4,10 @@
 #
 perf-annotate			mainporcelain common
 perf-list			mainporcelain common
+perf-sched			mainporcelain common
 perf-record			mainporcelain common
 perf-report			mainporcelain common
 perf-stat			mainporcelain common
+perf-timechart			mainporcelain common
 perf-top			mainporcelain common
+perf-trace			mainporcelain common
diff --git a/tools/perf/perf.c b/tools/perf/perf.c
index fe4589dde95..19fc7feb9d5 100644
--- a/tools/perf/perf.c
+++ b/tools/perf/perf.c
@@ -289,10 +289,12 @@ static void handle_internal_command(int argc, const char **argv)
 		{ "record", cmd_record, 0 },
 		{ "report", cmd_report, 0 },
 		{ "stat", cmd_stat, 0 },
+		{ "timechart", cmd_timechart, 0 },
 		{ "top", cmd_top, 0 },
 		{ "annotate", cmd_annotate, 0 },
 		{ "version", cmd_version, 0 },
 		{ "trace", cmd_trace, 0 },
+		{ "sched", cmd_sched, 0 },
 	};
 	unsigned int i;
 	static const char ext[] = STRIP_EXTENSION;
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index fa2d4e91d32..018d414a09d 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -39,6 +39,7 @@ struct fork_event {
 	struct perf_event_header header;
 	u32 pid, ppid;
 	u32 tid, ptid;
+	u64 time;
 };
 
 struct lost_event {
@@ -52,13 +53,19 @@ struct lost_event {
  */
 struct read_event {
 	struct perf_event_header header;
-	u32 pid,tid;
+	u32 pid, tid;
 	u64 value;
 	u64 time_enabled;
 	u64 time_running;
 	u64 id;
 };
 
+struct sample_event{
+	struct perf_event_header        header;
+	u64 array[];
+};
+
+
 typedef union event_union {
 	struct perf_event_header	header;
 	struct ip_event			ip;
@@ -67,6 +74,7 @@ typedef union event_union {
 	struct fork_event		fork;
 	struct lost_event		lost;
 	struct read_event		read;
+	struct sample_event		sample;
 } event_t;
 
 struct map {
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index ec4d4c2f952..bb4fca3efcc 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -7,9 +7,8 @@
 #include "header.h"
 
 /*
- *
+ * Create new perf.data header attribute:
  */
-
 struct perf_header_attr *perf_header_attr__new(struct perf_counter_attr *attr)
 {
 	struct perf_header_attr *self = malloc(sizeof(*self));
@@ -43,9 +42,8 @@ void perf_header_attr__add_id(struct perf_header_attr *self, u64 id)
 }
 
 /*
- *
+ * Create new perf.data header:
  */
-
 struct perf_header *perf_header__new(void)
 {
 	struct perf_header *self = malloc(sizeof(*self));
@@ -86,6 +84,46 @@ void perf_header__add_attr(struct perf_header *self,
 	self->attr[pos] = attr;
 }
 
+#define MAX_EVENT_NAME 64
+
+struct perf_trace_event_type {
+	u64	event_id;
+	char	name[MAX_EVENT_NAME];
+};
+
+static int event_count;
+static struct perf_trace_event_type *events;
+
+void perf_header__push_event(u64 id, const char *name)
+{
+	if (strlen(name) > MAX_EVENT_NAME)
+		printf("Event %s will be truncated\n", name);
+
+	if (!events) {
+		events = malloc(sizeof(struct perf_trace_event_type));
+		if (!events)
+			die("nomem");
+	} else {
+		events = realloc(events, (event_count + 1) * sizeof(struct perf_trace_event_type));
+		if (!events)
+			die("nomem");
+	}
+	memset(&events[event_count], 0, sizeof(struct perf_trace_event_type));
+	events[event_count].event_id = id;
+	strncpy(events[event_count].name, name, MAX_EVENT_NAME - 1);
+	event_count++;
+}
+
+char *perf_header__find_event(u64 id)
+{
+	int i;
+	for (i = 0 ; i < event_count; i++) {
+		if (events[i].event_id == id)
+			return events[i].name;
+	}
+	return NULL;
+}
+
 static const char *__perf_magic = "PERFFILE";
 
 #define PERF_MAGIC	(*(u64 *)__perf_magic)
@@ -106,6 +144,7 @@ struct perf_file_header {
 	u64				attr_size;
 	struct perf_file_section	attrs;
 	struct perf_file_section	data;
+	struct perf_file_section	event_types;
 };
 
 static void do_write(int fd, void *buf, size_t size)
@@ -154,6 +193,11 @@ void perf_header__write(struct perf_header *self, int fd)
 		do_write(fd, &f_attr, sizeof(f_attr));
 	}
 
+	self->event_offset = lseek(fd, 0, SEEK_CUR);
+	self->event_size = event_count * sizeof(struct perf_trace_event_type);
+	if (events)
+		do_write(fd, events, self->event_size);
+
 
 	self->data_offset = lseek(fd, 0, SEEK_CUR);
 
@@ -169,6 +213,10 @@ void perf_header__write(struct perf_header *self, int fd)
 			.offset = self->data_offset,
 			.size	= self->data_size,
 		},
+		.event_types = {
+			.offset = self->event_offset,
+			.size	= self->event_size,
+		},
 	};
 
 	lseek(fd, 0, SEEK_SET);
@@ -234,6 +282,17 @@ struct perf_header *perf_header__read(int fd)
 		lseek(fd, tmp, SEEK_SET);
 	}
 
+	if (f_header.event_types.size) {
+		lseek(fd, f_header.event_types.offset, SEEK_SET);
+		events = malloc(f_header.event_types.size);
+		if (!events)
+			die("nomem");
+		do_read(fd, events, f_header.event_types.size);
+		event_count =  f_header.event_types.size / sizeof(struct perf_trace_event_type);
+	}
+	self->event_offset = f_header.event_types.offset;
+	self->event_size   = f_header.event_types.size;
+
 	self->data_offset = f_header.data.offset;
 	self->data_size   = f_header.data.size;
 
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index 5d0a72ecc91..7b0e84a8717 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -19,6 +19,8 @@ struct perf_header {
 	s64 attr_offset;
 	u64 data_offset;
 	u64 data_size;
+	u64 event_offset;
+	u64 event_size;
 };
 
 struct perf_header *perf_header__read(int fd);
@@ -27,6 +29,10 @@ void perf_header__write(struct perf_header *self, int fd);
 void perf_header__add_attr(struct perf_header *self,
 			   struct perf_header_attr *attr);
 
+void perf_header__push_event(u64 id, const char *name);
+char *perf_header__find_event(u64 id);
+
+
 struct perf_header_attr *
 perf_header_attr__new(struct perf_counter_attr *attr);
 void perf_header_attr__add_id(struct perf_header_attr *self, u64 id);
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index a587d41ae3c..89172fd0038 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -6,6 +6,7 @@
 #include "exec_cmd.h"
 #include "string.h"
 #include "cache.h"
+#include "header.h"
 
 int					nr_counters;
 
@@ -18,6 +19,12 @@ struct event_symbol {
 	const char	*alias;
 };
 
+enum event_result {
+	EVT_FAILED,
+	EVT_HANDLED,
+	EVT_HANDLED_ALL
+};
+
 char debugfs_path[MAXPATHLEN];
 
 #define CHW(x) .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_##x
@@ -139,7 +146,7 @@ static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
 	   (strcmp(evt_dirent.d_name, "..")) &&				       \
 	   (!tp_event_has_id(&sys_dirent, &evt_dirent)))
 
-#define MAX_EVENT_LENGTH 30
+#define MAX_EVENT_LENGTH 512
 
 int valid_debugfs_mount(const char *debugfs)
 {
@@ -344,7 +351,7 @@ static int parse_aliases(const char **str, const char *names[][MAX_ALIASES], int
 	return -1;
 }
 
-static int
+static enum event_result
 parse_generic_hw_event(const char **str, struct perf_counter_attr *attr)
 {
 	const char *s = *str;
@@ -356,7 +363,7 @@ parse_generic_hw_event(const char **str, struct perf_counter_attr *attr)
 	 * then bail out:
 	 */
 	if (cache_type == -1)
-		return 0;
+		return EVT_FAILED;
 
 	while ((cache_op == -1 || cache_result == -1) && *s == '-') {
 		++s;
@@ -402,27 +409,115 @@ parse_generic_hw_event(const char **str, struct perf_counter_attr *attr)
 	attr->type = PERF_TYPE_HW_CACHE;
 
 	*str = s;
-	return 1;
+	return EVT_HANDLED;
+}
+
+static enum event_result
+parse_single_tracepoint_event(char *sys_name,
+			      const char *evt_name,
+			      unsigned int evt_length,
+			      char *flags,
+			      struct perf_counter_attr *attr,
+			      const char **strp)
+{
+	char evt_path[MAXPATHLEN];
+	char id_buf[4];
+	u64 id;
+	int fd;
+
+	if (flags) {
+		if (!strncmp(flags, "record", strlen(flags))) {
+			attr->sample_type |= PERF_SAMPLE_RAW;
+			attr->sample_type |= PERF_SAMPLE_TIME;
+			attr->sample_type |= PERF_SAMPLE_CPU;
+		}
+	}
+
+	snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path,
+		 sys_name, evt_name);
+
+	fd = open(evt_path, O_RDONLY);
+	if (fd < 0)
+		return EVT_FAILED;
+
+	if (read(fd, id_buf, sizeof(id_buf)) < 0) {
+		close(fd);
+		return EVT_FAILED;
+	}
+
+	close(fd);
+	id = atoll(id_buf);
+	attr->config = id;
+	attr->type = PERF_TYPE_TRACEPOINT;
+	*strp = evt_name + evt_length;
+
+	return EVT_HANDLED;
+}
+
+/* sys + ':' + event + ':' + flags*/
+#define MAX_EVOPT_LEN	(MAX_EVENT_LENGTH * 2 + 2 + 128)
+static enum event_result
+parse_subsystem_tracepoint_event(char *sys_name, char *flags)
+{
+	char evt_path[MAXPATHLEN];
+	struct dirent *evt_ent;
+	DIR *evt_dir;
+
+	snprintf(evt_path, MAXPATHLEN, "%s/%s", debugfs_path, sys_name);
+	evt_dir = opendir(evt_path);
+
+	if (!evt_dir) {
+		perror("Can't open event dir");
+		return EVT_FAILED;
+	}
+
+	while ((evt_ent = readdir(evt_dir))) {
+		char event_opt[MAX_EVOPT_LEN + 1];
+		int len;
+		unsigned int rem = MAX_EVOPT_LEN;
+
+		if (!strcmp(evt_ent->d_name, ".")
+		    || !strcmp(evt_ent->d_name, "..")
+		    || !strcmp(evt_ent->d_name, "enable")
+		    || !strcmp(evt_ent->d_name, "filter"))
+			continue;
+
+		len = snprintf(event_opt, MAX_EVOPT_LEN, "%s:%s", sys_name,
+			       evt_ent->d_name);
+		if (len < 0)
+			return EVT_FAILED;
+
+		rem -= len;
+		if (flags) {
+			if (rem < strlen(flags) + 1)
+				return EVT_FAILED;
+
+			strcat(event_opt, ":");
+			strcat(event_opt, flags);
+		}
+
+		if (parse_events(NULL, event_opt, 0))
+			return EVT_FAILED;
+	}
+
+	return EVT_HANDLED_ALL;
 }
 
-static int parse_tracepoint_event(const char **strp,
+
+static enum event_result parse_tracepoint_event(const char **strp,
 				    struct perf_counter_attr *attr)
 {
 	const char *evt_name;
 	char *flags;
 	char sys_name[MAX_EVENT_LENGTH];
-	char id_buf[4];
-	int fd;
 	unsigned int sys_length, evt_length;
-	u64 id;
-	char evt_path[MAXPATHLEN];
 
 	if (valid_debugfs_mount(debugfs_path))
 		return 0;
 
 	evt_name = strchr(*strp, ':');
 	if (!evt_name)
-		return 0;
+		return EVT_FAILED;
 
 	sys_length = evt_name - *strp;
 	if (sys_length >= MAX_EVENT_LENGTH)
@@ -434,32 +529,22 @@ static int parse_tracepoint_event(const char **strp,
 
 	flags = strchr(evt_name, ':');
 	if (flags) {
-		*flags = '\0';
+		/* split it out: */
+		evt_name = strndup(evt_name, flags - evt_name);
 		flags++;
-		if (!strncmp(flags, "record", strlen(flags)))
-			attr->sample_type |= PERF_SAMPLE_RAW;
 	}
 
 	evt_length = strlen(evt_name);
 	if (evt_length >= MAX_EVENT_LENGTH)
-		return 0;
-
-	snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path,
-		 sys_name, evt_name);
-	fd = open(evt_path, O_RDONLY);
-	if (fd < 0)
-		return 0;
+		return EVT_FAILED;
 
-	if (read(fd, id_buf, sizeof(id_buf)) < 0) {
-		close(fd);
-		return 0;
-	}
-	close(fd);
-	id = atoll(id_buf);
-	attr->config = id;
-	attr->type = PERF_TYPE_TRACEPOINT;
-	*strp = evt_name + evt_length;
-	return 1;
+	if (!strcmp(evt_name, "*")) {
+		*strp = evt_name + evt_length;
+		return parse_subsystem_tracepoint_event(sys_name, flags);
+	} else
+		return parse_single_tracepoint_event(sys_name, evt_name,
+						     evt_length, flags,
+						     attr, strp);
 }
 
 static int check_events(const char *str, unsigned int i)
@@ -477,7 +562,7 @@ static int check_events(const char *str, unsigned int i)
 	return 0;
 }
 
-static int
+static enum event_result
 parse_symbolic_event(const char **strp, struct perf_counter_attr *attr)
 {
 	const char *str = *strp;
@@ -490,31 +575,32 @@ parse_symbolic_event(const char **strp, struct perf_counter_attr *attr)
 			attr->type = event_symbols[i].type;
 			attr->config = event_symbols[i].config;
 			*strp = str + n;
-			return 1;
+			return EVT_HANDLED;
 		}
 	}
-	return 0;
+	return EVT_FAILED;
 }
 
-static int parse_raw_event(const char **strp, struct perf_counter_attr *attr)
+static enum event_result
+parse_raw_event(const char **strp, struct perf_counter_attr *attr)
 {
 	const char *str = *strp;
 	u64 config;
 	int n;
 
 	if (*str != 'r')
-		return 0;
+		return EVT_FAILED;
 	n = hex2u64(str + 1, &config);
 	if (n > 0) {
 		*strp = str + n + 1;
 		attr->type = PERF_TYPE_RAW;
 		attr->config = config;
-		return 1;
+		return EVT_HANDLED;
 	}
-	return 0;
+	return EVT_FAILED;
 }
 
-static int
+static enum event_result
 parse_numeric_event(const char **strp, struct perf_counter_attr *attr)
 {
 	const char *str = *strp;
@@ -530,13 +616,13 @@ parse_numeric_event(const char **strp, struct perf_counter_attr *attr)
 			attr->type = type;
 			attr->config = config;
 			*strp = endp;
-			return 1;
+			return EVT_HANDLED;
 		}
 	}
-	return 0;
+	return EVT_FAILED;
 }
 
-static int
+static enum event_result
 parse_event_modifier(const char **strp, struct perf_counter_attr *attr)
 {
 	const char *str = *strp;
@@ -569,37 +655,84 @@ parse_event_modifier(const char **strp, struct perf_counter_attr *attr)
  * Each event can have multiple symbolic names.
  * Symbolic names are (almost) exactly matched.
  */
-static int parse_event_symbols(const char **str, struct perf_counter_attr *attr)
+static enum event_result
+parse_event_symbols(const char **str, struct perf_counter_attr *attr)
 {
-	if (!(parse_tracepoint_event(str, attr) ||
-	      parse_raw_event(str, attr) ||
-	      parse_numeric_event(str, attr) ||
-	      parse_symbolic_event(str, attr) ||
-	      parse_generic_hw_event(str, attr)))
-		return 0;
+	enum event_result ret;
+
+	ret = parse_tracepoint_event(str, attr);
+	if (ret != EVT_FAILED)
+		goto modifier;
+
+	ret = parse_raw_event(str, attr);
+	if (ret != EVT_FAILED)
+		goto modifier;
+
+	ret = parse_numeric_event(str, attr);
+	if (ret != EVT_FAILED)
+		goto modifier;
+
+	ret = parse_symbolic_event(str, attr);
+	if (ret != EVT_FAILED)
+		goto modifier;
 
+	ret = parse_generic_hw_event(str, attr);
+	if (ret != EVT_FAILED)
+		goto modifier;
+
+	return EVT_FAILED;
+
+modifier:
 	parse_event_modifier(str, attr);
 
-	return 1;
+	return ret;
 }
 
+static void store_event_type(const char *orgname)
+{
+	char filename[PATH_MAX], *c;
+	FILE *file;
+	int id;
+
+	sprintf(filename, "/sys/kernel/debug/tracing/events/%s/id", orgname);
+	c = strchr(filename, ':');
+	if (c)
+		*c = '/';
+
+	file = fopen(filename, "r");
+	if (!file)
+		return;
+	if (fscanf(file, "%i", &id) < 1)
+		die("cannot store event ID");
+	fclose(file);
+	perf_header__push_event(id, orgname);
+}
+
+
 int parse_events(const struct option *opt __used, const char *str, int unset __used)
 {
 	struct perf_counter_attr attr;
+	enum event_result ret;
+
+	if (strchr(str, ':'))
+		store_event_type(str);
 
 	for (;;) {
 		if (nr_counters == MAX_COUNTERS)
 			return -1;
 
 		memset(&attr, 0, sizeof(attr));
-		if (!parse_event_symbols(&str, &attr))
+		ret = parse_event_symbols(&str, &attr);
+		if (ret == EVT_FAILED)
 			return -1;
 
 		if (!(*str == 0 || *str == ',' || isspace(*str)))
 			return -1;
 
-		attrs[nr_counters] = attr;
-		nr_counters++;
+		if (ret != EVT_HANDLED_ALL) {
+			attrs[nr_counters] = attr;
+			nr_counters++;
+		}
 
 		if (*str == 0)
 			break;
diff --git a/tools/perf/util/parse-options.h b/tools/perf/util/parse-options.h
index 8aa3464c709..2ee248ff27e 100644
--- a/tools/perf/util/parse-options.h
+++ b/tools/perf/util/parse-options.h
@@ -104,6 +104,8 @@ struct option {
 	{ .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), .argh = "time", .help = (h), .callback = parse_opt_approxidate_cb }
 #define OPT_CALLBACK(s, l, v, a, h, f) \
 	{ .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), (a), .help = (h), .callback = (f) }
+#define OPT_CALLBACK_NOOPT(s, l, v, a, h, f) \
+	{ .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), (a), .help = (h), .callback = (f), .flags = PARSE_OPT_NOARG }
 #define OPT_CALLBACK_DEFAULT(s, l, v, a, h, f, d) \
 	{ .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), (a), .help = (h), .callback = (f), .defval = (intptr_t)d, .flags = PARSE_OPT_LASTARG_DEFAULT }
 
diff --git a/tools/perf/util/svghelper.c b/tools/perf/util/svghelper.c
new file mode 100644
index 00000000000..a778fd0f4ae
--- /dev/null
+++ b/tools/perf/util/svghelper.c
@@ -0,0 +1,488 @@
+/*
+ * svghelper.c - helper functions for outputting svg
+ *
+ * (C) Copyright 2009 Intel Corporation
+ *
+ * Authors:
+ *     Arjan van de Ven <arjan@linux.intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; version 2
+ * of the License.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+
+#include "svghelper.h"
+
+static u64 first_time, last_time;
+static u64 turbo_frequency, max_freq;
+
+
+#define SLOT_MULT 30.0
+#define SLOT_HEIGHT 25.0
+
+int svg_page_width = 1000;
+
+#define MIN_TEXT_SIZE 0.001
+
+static u64 total_height;
+static FILE *svgfile;
+
+static double cpu2slot(int cpu)
+{
+	return 2 * cpu + 1;
+}
+
+static double cpu2y(int cpu)
+{
+	return cpu2slot(cpu) * SLOT_MULT;
+}
+
+static double time2pixels(u64 time)
+{
+	double X;
+
+	X = 1.0 * svg_page_width * (time - first_time) / (last_time - first_time);
+	return X;
+}
+
+/*
+ * Round text sizes so that the svg viewer only needs a discrete
+ * number of renderings of the font
+ */
+static double round_text_size(double size)
+{
+	int loop = 100;
+	double target = 10.0;
+
+	if (size >= 10.0)
+		return size;
+	while (loop--) {
+		if (size >= target)
+			return target;
+		target = target / 2.0;
+	}
+	return size;
+}
+
+void open_svg(const char *filename, int cpus, int rows, u64 start, u64 end)
+{
+	int new_width;
+
+	svgfile = fopen(filename, "w");
+	if (!svgfile) {
+		fprintf(stderr, "Cannot open %s for output\n", filename);
+		return;
+	}
+	first_time = start;
+	first_time = first_time / 100000000 * 100000000;
+	last_time = end;
+
+	/*
+	 * if the recording is short, we default to a width of 1000, but
+	 * for longer recordings we want at least 200 units of width per second
+	 */
+	new_width = (last_time - first_time) / 5000000;
+
+	if (new_width > svg_page_width)
+		svg_page_width = new_width;
+
+	total_height = (1 + rows + cpu2slot(cpus)) * SLOT_MULT;
+	fprintf(svgfile, "<?xml version=\"1.0\" standalone=\"no\"?> \n");
+	fprintf(svgfile, "<svg width=\"%i\" height=\"%llu\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\">\n", svg_page_width, total_height);
+
+	fprintf(svgfile, "<defs>\n  <style type=\"text/css\">\n    <![CDATA[\n");
+
+	fprintf(svgfile, "      rect          { stroke-width: 1; }\n");
+	fprintf(svgfile, "      rect.process  { fill:rgb(180,180,180); fill-opacity:0.9; stroke-width:1;   stroke:rgb(  0,  0,  0); } \n");
+	fprintf(svgfile, "      rect.process2 { fill:rgb(180,180,180); fill-opacity:0.9; stroke-width:0;   stroke:rgb(  0,  0,  0); } \n");
+	fprintf(svgfile, "      rect.sample   { fill:rgb(  0,  0,255); fill-opacity:0.8; stroke-width:0;   stroke:rgb(  0,  0,  0); } \n");
+	fprintf(svgfile, "      rect.blocked  { fill:rgb(255,  0,  0); fill-opacity:0.5; stroke-width:0;   stroke:rgb(  0,  0,  0); } \n");
+	fprintf(svgfile, "      rect.waiting  { fill:rgb(214,214,  0); fill-opacity:0.3; stroke-width:0;   stroke:rgb(  0,  0,  0); } \n");
+	fprintf(svgfile, "      rect.WAITING  { fill:rgb(255,214, 48); fill-opacity:0.6; stroke-width:0;   stroke:rgb(  0,  0,  0); } \n");
+	fprintf(svgfile, "      rect.cpu      { fill:rgb(192,192,192); fill-opacity:0.2; stroke-width:0.5; stroke:rgb(128,128,128); } \n");
+	fprintf(svgfile, "      rect.pstate   { fill:rgb(128,128,128); fill-opacity:0.8; stroke-width:0; } \n");
+	fprintf(svgfile, "      rect.c1       { fill:rgb(255,214,214); fill-opacity:0.5; stroke-width:0; } \n");
+	fprintf(svgfile, "      rect.c2       { fill:rgb(255,172,172); fill-opacity:0.5; stroke-width:0; } \n");
+	fprintf(svgfile, "      rect.c3       { fill:rgb(255,130,130); fill-opacity:0.5; stroke-width:0; } \n");
+	fprintf(svgfile, "      rect.c4       { fill:rgb(255, 88, 88); fill-opacity:0.5; stroke-width:0; } \n");
+	fprintf(svgfile, "      rect.c5       { fill:rgb(255, 44, 44); fill-opacity:0.5; stroke-width:0; } \n");
+	fprintf(svgfile, "      rect.c6       { fill:rgb(255,  0,  0); fill-opacity:0.5; stroke-width:0; } \n");
+	fprintf(svgfile, "      line.pstate   { stroke:rgb(255,255,  0); stroke-opacity:0.8; stroke-width:2; } \n");
+
+	fprintf(svgfile, "    ]]>\n   </style>\n</defs>\n");
+}
+
+void svg_box(int Yslot, u64 start, u64 end, const char *type)
+{
+	if (!svgfile)
+		return;
+
+	fprintf(svgfile, "<rect x=\"%4.8f\" width=\"%4.8f\" y=\"%4.1f\" height=\"%4.1f\" class=\"%s\"/>\n",
+		time2pixels(start), time2pixels(end)-time2pixels(start), Yslot * SLOT_MULT, SLOT_HEIGHT, type);
+}
+
+void svg_sample(int Yslot, int cpu, u64 start, u64 end)
+{
+	double text_size;
+	if (!svgfile)
+		return;
+
+	fprintf(svgfile, "<rect x=\"%4.8f\" width=\"%4.8f\" y=\"%4.1f\" height=\"%4.1f\" class=\"sample\"/>\n",
+		time2pixels(start), time2pixels(end)-time2pixels(start), Yslot * SLOT_MULT, SLOT_HEIGHT);
+
+	text_size = (time2pixels(end)-time2pixels(start));
+	if (cpu > 9)
+		text_size = text_size/2;
+	if (text_size > 1.25)
+		text_size = 1.25;
+	text_size = round_text_size(text_size);
+
+	if (text_size > MIN_TEXT_SIZE)
+		fprintf(svgfile, "<text x=\"%1.8f\" y=\"%1.8f\" font-size=\"%1.8fpt\">%i</text>\n",
+			time2pixels(start), Yslot *  SLOT_MULT + SLOT_HEIGHT - 1, text_size,  cpu + 1);
+
+}
+
+static char *time_to_string(u64 duration)
+{
+	static char text[80];
+
+	text[0] = 0;
+
+	if (duration < 1000) /* less than 1 usec */
+		return text;
+
+	if (duration < 1000 * 1000) { /* less than 1 msec */
+		sprintf(text, "%4.1f us", duration / 1000.0);
+		return text;
+	}
+	sprintf(text, "%4.1f ms", duration / 1000.0 / 1000);
+
+	return text;
+}
+
+void svg_waiting(int Yslot, u64 start, u64 end)
+{
+	char *text;
+	const char *style;
+	double font_size;
+
+	if (!svgfile)
+		return;
+
+	style = "waiting";
+
+	if (end-start > 10 * 1000000) /* 10 msec */
+		style = "WAITING";
+
+	text = time_to_string(end-start);
+
+	font_size = 1.0 * (time2pixels(end)-time2pixels(start));
+
+	if (font_size > 3)
+		font_size = 3;
+
+	font_size = round_text_size(font_size);
+
+	fprintf(svgfile, "<g transform=\"translate(%4.8f,%4.8f)\">\n", time2pixels(start), Yslot * SLOT_MULT);
+	fprintf(svgfile, "<rect x=\"0\" width=\"%4.8f\" y=\"0\" height=\"%4.1f\" class=\"%s\"/>\n",
+		time2pixels(end)-time2pixels(start), SLOT_HEIGHT, style);
+	if (font_size > MIN_TEXT_SIZE)
+		fprintf(svgfile, "<text transform=\"rotate(90)\" font-size=\"%1.8fpt\"> %s</text>\n",
+			font_size, text);
+	fprintf(svgfile, "</g>\n");
+}
+
+static char *cpu_model(void)
+{
+	static char cpu_m[255];
+	char buf[256];
+	FILE *file;
+
+	cpu_m[0] = 0;
+	/* CPU type */
+	file = fopen("/proc/cpuinfo", "r");
+	if (file) {
+		while (fgets(buf, 255, file)) {
+			if (strstr(buf, "model name")) {
+				strncpy(cpu_m, &buf[13], 255);
+				break;
+			}
+		}
+		fclose(file);
+	}
+	return cpu_m;
+}
+
+void svg_cpu_box(int cpu, u64 __max_freq, u64 __turbo_freq)
+{
+	char cpu_string[80];
+	if (!svgfile)
+		return;
+
+	max_freq = __max_freq;
+	turbo_frequency = __turbo_freq;
+
+	fprintf(svgfile, "<rect x=\"%4.8f\" width=\"%4.8f\" y=\"%4.1f\" height=\"%4.1f\" class=\"cpu\"/>\n",
+		time2pixels(first_time),
+		time2pixels(last_time)-time2pixels(first_time),
+		cpu2y(cpu), SLOT_MULT+SLOT_HEIGHT);
+
+	sprintf(cpu_string, "CPU %i", (int)cpu+1);
+	fprintf(svgfile, "<text x=\"%4.8f\" y=\"%4.8f\">%s</text>\n",
+		10+time2pixels(first_time), cpu2y(cpu) + SLOT_HEIGHT/2, cpu_string);
+
+	fprintf(svgfile, "<text transform=\"translate(%4.8f,%4.8f)\" font-size=\"1.25pt\">%s</text>\n",
+		10+time2pixels(first_time), cpu2y(cpu) + SLOT_MULT + SLOT_HEIGHT - 4, cpu_model());
+}
+
+void svg_process(int cpu, u64 start, u64 end, const char *type, const char *name)
+{
+	double width;
+
+	if (!svgfile)
+		return;
+
+
+	fprintf(svgfile, "<g transform=\"translate(%4.8f,%4.8f)\">\n", time2pixels(start), cpu2y(cpu));
+	fprintf(svgfile, "<rect x=\"0\" width=\"%4.8f\" y=\"0\" height=\"%4.1f\" class=\"%s\"/>\n",
+		time2pixels(end)-time2pixels(start), SLOT_MULT+SLOT_HEIGHT, type);
+	width = time2pixels(end)-time2pixels(start);
+	if (width > 6)
+		width = 6;
+
+	width = round_text_size(width);
+
+	if (width > MIN_TEXT_SIZE)
+		fprintf(svgfile, "<text transform=\"rotate(90)\" font-size=\"%3.8fpt\">%s</text>\n",
+			width, name);
+
+	fprintf(svgfile, "</g>\n");
+}
+
+void svg_cstate(int cpu, u64 start, u64 end, int type)
+{
+	double width;
+	char style[128];
+
+	if (!svgfile)
+		return;
+
+
+	if (type > 6)
+		type = 6;
+	sprintf(style, "c%i", type);
+
+	fprintf(svgfile, "<rect class=\"%s\" x=\"%4.8f\" width=\"%4.8f\" y=\"%4.1f\" height=\"%4.1f\"/>\n",
+		style,
+		time2pixels(start), time2pixels(end)-time2pixels(start),
+		cpu2y(cpu), SLOT_MULT+SLOT_HEIGHT);
+
+	width = (time2pixels(end)-time2pixels(start))/2.0;
+	if (width > 6)
+		width = 6;
+
+	width = round_text_size(width);
+
+	if (width > MIN_TEXT_SIZE)
+		fprintf(svgfile, "<text x=\"%4.8f\" y=\"%4.8f\" font-size=\"%3.8fpt\">C%i</text>\n",
+			time2pixels(start), cpu2y(cpu)+width, width, type);
+}
+
+static char *HzToHuman(unsigned long hz)
+{
+	static char buffer[1024];
+	unsigned long long Hz;
+
+	memset(buffer, 0, 1024);
+
+	Hz = hz;
+
+	/* default: just put the Number in */
+	sprintf(buffer, "%9lli", Hz);
+
+	if (Hz > 1000)
+		sprintf(buffer, " %6lli Mhz", (Hz+500)/1000);
+
+	if (Hz > 1500000)
+		sprintf(buffer, " %6.2f Ghz", (Hz+5000.0)/1000000);
+
+	if (Hz == turbo_frequency)
+		sprintf(buffer, "Turbo");
+
+	return buffer;
+}
+
+void svg_pstate(int cpu, u64 start, u64 end, u64 freq)
+{
+	double height = 0;
+
+	if (!svgfile)
+		return;
+
+	if (max_freq)
+		height = freq * 1.0 / max_freq * (SLOT_HEIGHT + SLOT_MULT);
+	height = 1 + cpu2y(cpu) + SLOT_MULT + SLOT_HEIGHT - height;
+	fprintf(svgfile, "<line x1=\"%4.8f\" x2=\"%4.8f\" y1=\"%4.1f\" y2=\"%4.1f\" class=\"pstate\"/>\n",
+		time2pixels(start), time2pixels(end), height, height);
+	fprintf(svgfile, "<text x=\"%4.8f\" y=\"%4.8f\" font-size=\"0.25pt\">%s</text>\n",
+		time2pixels(start), height+0.9, HzToHuman(freq));
+
+}
+
+
+void svg_partial_wakeline(u64 start, int row1, char *desc1, int row2, char *desc2)
+{
+	double height;
+
+	if (!svgfile)
+		return;
+
+
+	if (row1 < row2) {
+		if (row1) {
+			fprintf(svgfile, "<line x1=\"%4.8f\" y1=\"%4.2f\" x2=\"%4.8f\" y2=\"%4.2f\" style=\"stroke:rgb(32,255,32);stroke-width:0.009\"/>\n",
+				time2pixels(start), row1 * SLOT_MULT + SLOT_HEIGHT,  time2pixels(start), row1 * SLOT_MULT + SLOT_HEIGHT + SLOT_MULT/32);
+			if (desc2)
+				fprintf(svgfile, "<g transform=\"translate(%4.8f,%4.8f)\"><text transform=\"rotate(90)\" font-size=\"0.02pt\">%s &gt;</text></g>\n",
+					time2pixels(start), row1 * SLOT_MULT + SLOT_HEIGHT + SLOT_HEIGHT/48, desc2);
+		}
+		if (row2) {
+			fprintf(svgfile, "<line x1=\"%4.8f\" y1=\"%4.2f\" x2=\"%4.8f\" y2=\"%4.2f\" style=\"stroke:rgb(32,255,32);stroke-width:0.009\"/>\n",
+				time2pixels(start), row2 * SLOT_MULT - SLOT_MULT/32,  time2pixels(start), row2 * SLOT_MULT);
+			if (desc1)
+				fprintf(svgfile, "<g transform=\"translate(%4.8f,%4.8f)\"><text transform=\"rotate(90)\" font-size=\"0.02pt\">%s &gt;</text></g>\n",
+					time2pixels(start), row2 * SLOT_MULT - SLOT_MULT/32, desc1);
+		}
+	} else {
+		if (row2) {
+			fprintf(svgfile, "<line x1=\"%4.8f\" y1=\"%4.2f\" x2=\"%4.8f\" y2=\"%4.2f\" style=\"stroke:rgb(32,255,32);stroke-width:0.009\"/>\n",
+				time2pixels(start), row2 * SLOT_MULT + SLOT_HEIGHT,  time2pixels(start), row2 * SLOT_MULT + SLOT_HEIGHT + SLOT_MULT/32);
+			if (desc1)
+				fprintf(svgfile, "<g transform=\"translate(%4.8f,%4.8f)\"><text transform=\"rotate(90)\" font-size=\"0.02pt\">%s &lt;</text></g>\n",
+					time2pixels(start), row2 * SLOT_MULT + SLOT_HEIGHT + SLOT_MULT/48, desc1);
+		}
+		if (row1) {
+			fprintf(svgfile, "<line x1=\"%4.8f\" y1=\"%4.2f\" x2=\"%4.8f\" y2=\"%4.2f\" style=\"stroke:rgb(32,255,32);stroke-width:0.009\"/>\n",
+				time2pixels(start), row1 * SLOT_MULT - SLOT_MULT/32,  time2pixels(start), row1 * SLOT_MULT);
+			if (desc2)
+				fprintf(svgfile, "<g transform=\"translate(%4.8f,%4.8f)\"><text transform=\"rotate(90)\" font-size=\"0.02pt\">%s &lt;</text></g>\n",
+					time2pixels(start), row1 * SLOT_MULT - SLOT_HEIGHT/32, desc2);
+		}
+	}
+	height = row1 * SLOT_MULT;
+	if (row2 > row1)
+		height += SLOT_HEIGHT;
+	if (row1)
+		fprintf(svgfile, "<circle  cx=\"%4.8f\" cy=\"%4.2f\" r = \"0.01\"  style=\"fill:rgb(32,255,32)\"/>\n",
+			time2pixels(start), height);
+}
+
+void svg_wakeline(u64 start, int row1, int row2)
+{
+	double height;
+
+	if (!svgfile)
+		return;
+
+
+	if (row1 < row2)
+		fprintf(svgfile, "<line x1=\"%4.8f\" y1=\"%4.2f\" x2=\"%4.8f\" y2=\"%4.2f\" style=\"stroke:rgb(32,255,32);stroke-width:0.009\"/>\n",
+			time2pixels(start), row1 * SLOT_MULT + SLOT_HEIGHT,  time2pixels(start), row2 * SLOT_MULT);
+	else
+		fprintf(svgfile, "<line x1=\"%4.8f\" y1=\"%4.2f\" x2=\"%4.8f\" y2=\"%4.2f\" style=\"stroke:rgb(32,255,32);stroke-width:0.009\"/>\n",
+			time2pixels(start), row2 * SLOT_MULT + SLOT_HEIGHT,  time2pixels(start), row1 * SLOT_MULT);
+
+	height = row1 * SLOT_MULT;
+	if (row2 > row1)
+		height += SLOT_HEIGHT;
+	fprintf(svgfile, "<circle  cx=\"%4.8f\" cy=\"%4.2f\" r = \"0.01\"  style=\"fill:rgb(32,255,32)\"/>\n",
+			time2pixels(start), height);
+}
+
+void svg_interrupt(u64 start, int row)
+{
+	if (!svgfile)
+		return;
+
+	fprintf(svgfile, "<circle  cx=\"%4.8f\" cy=\"%4.2f\" r = \"0.01\"  style=\"fill:rgb(255,128,128)\"/>\n",
+			time2pixels(start), row * SLOT_MULT);
+	fprintf(svgfile, "<circle  cx=\"%4.8f\" cy=\"%4.2f\" r = \"0.01\"  style=\"fill:rgb(255,128,128)\"/>\n",
+			time2pixels(start), row * SLOT_MULT + SLOT_HEIGHT);
+}
+
+void svg_text(int Yslot, u64 start, const char *text)
+{
+	if (!svgfile)
+		return;
+
+	fprintf(svgfile, "<text x=\"%4.8f\" y=\"%4.8f\">%s</text>\n",
+		time2pixels(start), Yslot * SLOT_MULT+SLOT_HEIGHT/2, text);
+}
+
+static void svg_legenda_box(int X, const char *text, const char *style)
+{
+	double boxsize;
+	boxsize = SLOT_HEIGHT / 2;
+
+	fprintf(svgfile, "<rect x=\"%i\" width=\"%4.8f\" y=\"0\" height=\"%4.1f\" class=\"%s\"/>\n",
+		X, boxsize, boxsize, style);
+	fprintf(svgfile, "<text transform=\"translate(%4.8f, %4.8f)\" font-size=\"%4.8fpt\">%s</text>\n",
+		X + boxsize + 5, boxsize, 0.8 * boxsize, text);
+}
+
+void svg_legenda(void)
+{
+	if (!svgfile)
+		return;
+
+	svg_legenda_box(0,	"Running", "sample");
+	svg_legenda_box(100,	"Idle","rect.c1");
+	svg_legenda_box(200,	"Deeper Idle", "rect.c3");
+	svg_legenda_box(350,	"Deepest Idle", "rect.c6");
+	svg_legenda_box(550,	"Sleeping", "process2");
+	svg_legenda_box(650,	"Waiting for cpu", "waiting");
+	svg_legenda_box(800,	"Blocked on IO", "blocked");
+}
+
+void svg_time_grid(void)
+{
+	u64 i;
+
+	if (!svgfile)
+		return;
+
+	i = first_time;
+	while (i < last_time) {
+		int color = 220;
+		double thickness = 0.075;
+		if ((i % 100000000) == 0) {
+			thickness = 0.5;
+			color = 192;
+		}
+		if ((i % 1000000000) == 0) {
+			thickness = 2.0;
+			color = 128;
+		}
+
+		fprintf(svgfile, "<line x1=\"%4.8f\" y1=\"%4.2f\" x2=\"%4.8f\" y2=\"%llu\" style=\"stroke:rgb(%i,%i,%i);stroke-width:%1.3f\"/>\n",
+			time2pixels(i), SLOT_MULT/2, time2pixels(i), total_height, color, color, color, thickness);
+
+		i += 10000000;
+	}
+}
+
+void svg_close(void)
+{
+	if (svgfile) {
+		fprintf(svgfile, "</svg>\n");
+		fclose(svgfile);
+		svgfile = NULL;
+	}
+}
diff --git a/tools/perf/util/svghelper.h b/tools/perf/util/svghelper.h
new file mode 100644
index 00000000000..cd93195aedb
--- /dev/null
+++ b/tools/perf/util/svghelper.h
@@ -0,0 +1,28 @@
+#ifndef _INCLUDE_GUARD_SVG_HELPER_
+#define _INCLUDE_GUARD_SVG_HELPER_
+
+#include "types.h"
+
+extern void open_svg(const char *filename, int cpus, int rows, u64 start, u64 end);
+extern void svg_box(int Yslot, u64 start, u64 end, const char *type);
+extern void svg_sample(int Yslot, int cpu, u64 start, u64 end);
+extern void svg_waiting(int Yslot, u64 start, u64 end);
+extern void svg_cpu_box(int cpu, u64 max_frequency, u64 turbo_frequency);
+
+
+extern void svg_process(int cpu, u64 start, u64 end, const char *type, const char *name);
+extern void svg_cstate(int cpu, u64 start, u64 end, int type);
+extern void svg_pstate(int cpu, u64 start, u64 end, u64 freq);
+
+
+extern void svg_time_grid(void);
+extern void svg_legenda(void);
+extern void svg_wakeline(u64 start, int row1, int row2);
+extern void svg_partial_wakeline(u64 start, int row1, char *desc1, int row2, char *desc2);
+extern void svg_interrupt(u64 start, int row);
+extern void svg_text(int Yslot, u64 start, const char *text);
+extern void svg_close(void);
+
+extern int svg_page_width;
+
+#endif
diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index 7635928ca27..45efb5db0d1 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -8,7 +8,7 @@
 
 static struct thread *thread__new(pid_t pid)
 {
-	struct thread *self = malloc(sizeof(*self));
+	struct thread *self = calloc(1, sizeof(*self));
 
 	if (self != NULL) {
 		self->pid = pid;
@@ -85,7 +85,7 @@ register_idle_thread(struct rb_root *threads, struct thread **last_match)
 {
 	struct thread *thread = threads__findnew(0, threads, last_match);
 
-	if (!thread || thread__set_comm(thread, "[init]")) {
+	if (!thread || thread__set_comm(thread, "swapper")) {
 		fprintf(stderr, "problem inserting idle task.\n");
 		exit(-1);
 	}
diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h
index 634f2809a34..32aea3c1c2a 100644
--- a/tools/perf/util/thread.h
+++ b/tools/perf/util/thread.h
@@ -4,10 +4,11 @@
 #include "symbol.h"
 
 struct thread {
-	struct rb_node	 rb_node;
-	struct list_head maps;
-	pid_t		 pid;
-	char		 *comm;
+	struct rb_node		rb_node;
+	struct list_head	maps;
+	pid_t			pid;
+	char			shortname[3];
+	char			*comm;
 };
 
 int thread__set_comm(struct thread *self, const char *comm);
diff --git a/tools/perf/util/trace-event-info.c b/tools/perf/util/trace-event-info.c
index 6c9302a7274..1fd824c1f1c 100644
--- a/tools/perf/util/trace-event-info.c
+++ b/tools/perf/util/trace-event-info.c
@@ -458,7 +458,7 @@ static void read_proc_kallsyms(void)
 static void read_ftrace_printk(void)
 {
 	unsigned int size, check_size;
-	const char *path;
+	char *path;
 	struct stat st;
 	int ret;
 
@@ -468,14 +468,15 @@ static void read_ftrace_printk(void)
 		/* not found */
 		size = 0;
 		write_or_die(&size, 4);
-		return;
+		goto out;
 	}
 	size = get_size(path);
 	write_or_die(&size, 4);
 	check_size = copy_file(path);
 	if (size != check_size)
 		die("error in size of file '%s'", path);
-
+out:
+	put_tracing_file(path);
 }
 
 static struct tracepoint_path *
diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 629e602d940..f6a8437141c 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -1776,6 +1776,29 @@ static unsigned long long read_size(void *ptr, int size)
 	}
 }
 
+unsigned long long
+raw_field_value(struct event *event, const char *name, void *data)
+{
+	struct format_field *field;
+
+	field = find_any_field(event, name);
+	if (!field)
+		return 0ULL;
+
+	return read_size(data + field->offset, field->size);
+}
+
+void *raw_field_ptr(struct event *event, const char *name, void *data)
+{
+	struct format_field *field;
+
+	field = find_any_field(event, name);
+	if (!field)
+		return NULL;
+
+	return data + field->offset;
+}
+
 static int get_common_info(const char *type, int *offset, int *size)
 {
 	struct event *event;
@@ -1799,7 +1822,7 @@ static int get_common_info(const char *type, int *offset, int *size)
 	return 0;
 }
 
-static int parse_common_type(void *data)
+int trace_parse_common_type(void *data)
 {
 	static int type_offset;
 	static int type_size;
@@ -1832,7 +1855,7 @@ static int parse_common_pid(void *data)
 	return read_size(data + pid_offset, pid_size);
 }
 
-static struct event *find_event(int id)
+struct event *trace_find_event(int id)
 {
 	struct event *event;
 
@@ -2420,8 +2443,8 @@ get_return_for_leaf(int cpu, int cur_pid, unsigned long long cur_func,
 	int type;
 	int pid;
 
-	type = parse_common_type(next->data);
-	event = find_event(type);
+	type = trace_parse_common_type(next->data);
+	event = trace_find_event(type);
 	if (!event)
 		return NULL;
 
@@ -2502,8 +2525,8 @@ print_graph_entry_leaf(struct event *event, void *data, struct record *ret_rec)
 	int type;
 	int i;
 
-	type = parse_common_type(ret_rec->data);
-	ret_event = find_event(type);
+	type = trace_parse_common_type(ret_rec->data);
+	ret_event = trace_find_event(type);
 
 	field = find_field(ret_event, "rettime");
 	if (!field)
@@ -2696,11 +2719,13 @@ void print_event(int cpu, void *data, int size, unsigned long long nsecs,
 	nsecs -= secs * NSECS_PER_SEC;
 	usecs = nsecs / NSECS_PER_USEC;
 
-	type = parse_common_type(data);
+	type = trace_parse_common_type(data);
 
-	event = find_event(type);
-	if (!event)
-		die("ug! no event found for type %d", type);
+	event = trace_find_event(type);
+	if (!event) {
+		printf("ug! no event found for type %d\n", type);
+		return;
+	}
 
 	pid = parse_common_pid(data);
 
diff --git a/tools/perf/util/trace-event-read.c b/tools/perf/util/trace-event-read.c
index a1217a10632..1b5c847d2c2 100644
--- a/tools/perf/util/trace-event-read.c
+++ b/tools/perf/util/trace-event-read.c
@@ -458,12 +458,13 @@ struct record *trace_read_data(int cpu)
 	return data;
 }
 
-void trace_report (void)
+void trace_report(void)
 {
 	const char *input_file = "trace.info";
 	char buf[BUFSIZ];
 	char test[] = { 23, 8, 68 };
 	char *version;
+	int show_version = 0;
 	int show_funcs = 0;
 	int show_printk = 0;
 
@@ -480,7 +481,8 @@ void trace_report (void)
 		die("not a trace file (missing tracing)");
 
 	version = read_string();
-	printf("version = %s\n", version);
+	if (show_version)
+		printf("version = %s\n", version);
 	free(version);
 
 	read_or_die(buf, 1);
diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h
index 420294a5773..d35ebf1e29f 100644
--- a/tools/perf/util/trace-event.h
+++ b/tools/perf/util/trace-event.h
@@ -234,6 +234,11 @@ extern int header_page_data_offset;
 extern int header_page_data_size;
 
 int parse_header_page(char *buf, unsigned long size);
+int trace_parse_common_type(void *data);
+struct event *trace_find_event(int id);
+unsigned long long
+raw_field_value(struct event *event, const char *name, void *data);
+void *raw_field_ptr(struct event *event, const char *name, void *data);
 
 void read_tracing_data(struct perf_counter_attr *pattrs, int nb_counters);