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-rw-r--r--tools/perf/Documentation/perf-examples.txt225
-rw-r--r--tools/perf/Documentation/perf-record.txt60
-rw-r--r--tools/perf/Documentation/perf-stat.txt2
-rw-r--r--tools/perf/Documentation/perf-top.txt112
-rw-r--r--tools/perf/Makefile33
-rw-r--r--tools/perf/builtin-record.c13
-rw-r--r--tools/perf/builtin-report.c103
-rw-r--r--tools/perf/builtin-stat.c2
-rw-r--r--tools/perf/builtin-top.c552
-rw-r--r--tools/perf/util/callchain.c32
-rw-r--r--tools/perf/util/callchain.h8
-rw-r--r--tools/perf/util/header.c5
-rw-r--r--tools/perf/util/parse-events.c26
-rw-r--r--tools/perf/util/parse-events.h1
-rw-r--r--tools/perf/util/symbol.c134
-rw-r--r--tools/perf/util/symbol.h2
16 files changed, 1203 insertions, 107 deletions
diff --git a/tools/perf/Documentation/perf-examples.txt b/tools/perf/Documentation/perf-examples.txt
new file mode 100644
index 00000000000..8eb6c489fb1
--- /dev/null
+++ b/tools/perf/Documentation/perf-examples.txt
@@ -0,0 +1,225 @@
+
+ ------------------------------
+ ****** perf by examples ******
+ ------------------------------
+
+[ From an e-mail by Ingo Molnar, http://lkml.org/lkml/2009/8/4/346 ]
+
+
+First, discovery/enumeration of available counters can be done via
+'perf list':
+
+titan:~> perf list
+ [...]
+ kmem:kmalloc [Tracepoint event]
+ kmem:kmem_cache_alloc [Tracepoint event]
+ kmem:kmalloc_node [Tracepoint event]
+ kmem:kmem_cache_alloc_node [Tracepoint event]
+ kmem:kfree [Tracepoint event]
+ kmem:kmem_cache_free [Tracepoint event]
+ kmem:mm_page_free_direct [Tracepoint event]
+ kmem:mm_pagevec_free [Tracepoint event]
+ kmem:mm_page_alloc [Tracepoint event]
+ kmem:mm_page_alloc_zone_locked [Tracepoint event]
+ kmem:mm_page_pcpu_drain [Tracepoint event]
+ kmem:mm_page_alloc_extfrag [Tracepoint event]
+
+Then any (or all) of the above event sources can be activated and
+measured. For example the page alloc/free properties of a 'hackbench
+run' are:
+
+ titan:~> perf stat -e kmem:mm_page_pcpu_drain -e kmem:mm_page_alloc
+ -e kmem:mm_pagevec_free -e kmem:mm_page_free_direct ./hackbench 10
+ Time: 0.575
+
+ Performance counter stats for './hackbench 10':
+
+ 13857 kmem:mm_page_pcpu_drain
+ 27576 kmem:mm_page_alloc
+ 6025 kmem:mm_pagevec_free
+ 20934 kmem:mm_page_free_direct
+
+ 0.613972165 seconds time elapsed
+
+You can observe the statistical properties as well, by using the
+'repeat the workload N times' feature of perf stat:
+
+ titan:~> perf stat --repeat 5 -e kmem:mm_page_pcpu_drain -e
+ kmem:mm_page_alloc -e kmem:mm_pagevec_free -e
+ kmem:mm_page_free_direct ./hackbench 10
+ Time: 0.627
+ Time: 0.644
+ Time: 0.564
+ Time: 0.559
+ Time: 0.626
+
+ Performance counter stats for './hackbench 10' (5 runs):
+
+ 12920 kmem:mm_page_pcpu_drain ( +- 3.359% )
+ 25035 kmem:mm_page_alloc ( +- 3.783% )
+ 6104 kmem:mm_pagevec_free ( +- 0.934% )
+ 18376 kmem:mm_page_free_direct ( +- 4.941% )
+
+ 0.643954516 seconds time elapsed ( +- 2.363% )
+
+Furthermore, these tracepoints can be used to sample the workload as
+well. For example the page allocations done by a 'git gc' can be
+captured the following way:
+
+ titan:~/git> perf record -f -e kmem:mm_page_alloc -c 1 ./git gc
+ Counting objects: 1148, done.
+ Delta compression using up to 2 threads.
+ Compressing objects: 100% (450/450), done.
+ Writing objects: 100% (1148/1148), done.
+ Total 1148 (delta 690), reused 1148 (delta 690)
+ [ perf record: Captured and wrote 0.267 MB perf.data (~11679 samples) ]
+
+To check which functions generated page allocations:
+
+ titan:~/git> perf report
+ # Samples: 10646
+ #
+ # Overhead Command Shared Object
+ # ........ ............... ..........................
+ #
+ 23.57% git-repack /lib64/libc-2.5.so
+ 21.81% git /lib64/libc-2.5.so
+ 14.59% git ./git
+ 11.79% git-repack ./git
+ 7.12% git /lib64/ld-2.5.so
+ 3.16% git-repack /lib64/libpthread-2.5.so
+ 2.09% git-repack /bin/bash
+ 1.97% rm /lib64/libc-2.5.so
+ 1.39% mv /lib64/ld-2.5.so
+ 1.37% mv /lib64/libc-2.5.so
+ 1.12% git-repack /lib64/ld-2.5.so
+ 0.95% rm /lib64/ld-2.5.so
+ 0.90% git-update-serv /lib64/libc-2.5.so
+ 0.73% git-update-serv /lib64/ld-2.5.so
+ 0.68% perf /lib64/libpthread-2.5.so
+ 0.64% git-repack /usr/lib64/libz.so.1.2.3
+
+Or to see it on a more finegrained level:
+
+titan:~/git> perf report --sort comm,dso,symbol
+# Samples: 10646
+#
+# Overhead Command Shared Object Symbol
+# ........ ............... .......................... ......
+#
+ 9.35% git-repack ./git [.] insert_obj_hash
+ 9.12% git ./git [.] insert_obj_hash
+ 7.31% git /lib64/libc-2.5.so [.] memcpy
+ 6.34% git-repack /lib64/libc-2.5.so [.] _int_malloc
+ 6.24% git-repack /lib64/libc-2.5.so [.] memcpy
+ 5.82% git-repack /lib64/libc-2.5.so [.] __GI___fork
+ 5.47% git /lib64/libc-2.5.so [.] _int_malloc
+ 2.99% git /lib64/libc-2.5.so [.] memset
+
+Furthermore, call-graph sampling can be done too, of page
+allocations - to see precisely what kind of page allocations there
+are:
+
+ titan:~/git> perf record -f -g -e kmem:mm_page_alloc -c 1 ./git gc
+ Counting objects: 1148, done.
+ Delta compression using up to 2 threads.
+ Compressing objects: 100% (450/450), done.
+ Writing objects: 100% (1148/1148), done.
+ Total 1148 (delta 690), reused 1148 (delta 690)
+ [ perf record: Captured and wrote 0.963 MB perf.data (~42069 samples) ]
+
+ titan:~/git> perf report -g
+ # Samples: 10686
+ #
+ # Overhead Command Shared Object
+ # ........ ............... ..........................
+ #
+ 23.25% git-repack /lib64/libc-2.5.so
+ |
+ |--50.00%-- _int_free
+ |
+ |--37.50%-- __GI___fork
+ | make_child
+ |
+ |--12.50%-- ptmalloc_unlock_all2
+ | make_child
+ |
+ --6.25%-- __GI_strcpy
+ 21.61% git /lib64/libc-2.5.so
+ |
+ |--30.00%-- __GI_read
+ | |
+ | --83.33%-- git_config_from_file
+ | git_config
+ | |
+ [...]
+
+Or you can observe the whole system's page allocations for 10
+seconds:
+
+titan:~/git> perf stat -a -e kmem:mm_page_pcpu_drain -e
+kmem:mm_page_alloc -e kmem:mm_pagevec_free -e
+kmem:mm_page_free_direct sleep 10
+
+ Performance counter stats for 'sleep 10':
+
+ 171585 kmem:mm_page_pcpu_drain
+ 322114 kmem:mm_page_alloc
+ 73623 kmem:mm_pagevec_free
+ 254115 kmem:mm_page_free_direct
+
+ 10.000591410 seconds time elapsed
+
+Or observe how fluctuating the page allocations are, via statistical
+analysis done over ten 1-second intervals:
+
+ titan:~/git> perf stat --repeat 10 -a -e kmem:mm_page_pcpu_drain -e
+ kmem:mm_page_alloc -e kmem:mm_pagevec_free -e
+ kmem:mm_page_free_direct sleep 1
+
+ Performance counter stats for 'sleep 1' (10 runs):
+
+ 17254 kmem:mm_page_pcpu_drain ( +- 3.709% )
+ 34394 kmem:mm_page_alloc ( +- 4.617% )
+ 7509 kmem:mm_pagevec_free ( +- 4.820% )
+ 25653 kmem:mm_page_free_direct ( +- 3.672% )
+
+ 1.058135029 seconds time elapsed ( +- 3.089% )
+
+Or you can annotate the recorded 'git gc' run on a per symbol basis
+and check which instructions/source-code generated page allocations:
+
+ titan:~/git> perf annotate __GI___fork
+ ------------------------------------------------
+ Percent | Source code & Disassembly of libc-2.5.so
+ ------------------------------------------------
+ :
+ :
+ : Disassembly of section .plt:
+ : Disassembly of section .text:
+ :
+ : 00000031a2e95560 <__fork>:
+ [...]
+ 0.00 : 31a2e95602: b8 38 00 00 00 mov $0x38,%eax
+ 0.00 : 31a2e95607: 0f 05 syscall
+ 83.42 : 31a2e95609: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax
+ 0.00 : 31a2e9560f: 0f 87 4d 01 00 00 ja 31a2e95762 <__fork+0x202>
+ 0.00 : 31a2e95615: 85 c0 test %eax,%eax
+
+( this shows that 83.42% of __GI___fork's page allocations come from
+ the 0x38 system call it performs. )
+
+etc. etc. - a lot more is possible. I could list a dozen of
+other different usecases straight away - neither of which is
+possible via /proc/vmstat.
+
+/proc/vmstat is not in the same league really, in terms of
+expressive power of system analysis and performance
+analysis.
+
+All that the above results needed were those new tracepoints
+in include/tracing/events/kmem.h.
+
+ Ingo
+
+
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt
index 1dbc1eeb4c0..6be696b0a2b 100644
--- a/tools/perf/Documentation/perf-record.txt
+++ b/tools/perf/Documentation/perf-record.txt
@@ -29,13 +29,67 @@ OPTIONS
Select the PMU event. Selection can be a symbolic event name
(use 'perf list' to list all events) or a raw PMU
event (eventsel+umask) in the form of rNNN where NNN is a
- hexadecimal event descriptor.
+ hexadecimal event descriptor.
-a::
- system-wide collection
+ System-wide collection.
-l::
- scale counter values
+ Scale counter values.
+
+-p::
+--pid=::
+ Record events on existing pid.
+
+-r::
+--realtime=::
+ Collect data with this RT SCHED_FIFO priority.
+-A::
+--append::
+ Append to the output file to do incremental profiling.
+
+-f::
+--force::
+ Overwrite existing data file.
+
+-c::
+--count=::
+ Event period to sample.
+
+-o::
+--output=::
+ Output file name.
+
+-i::
+--inherit::
+ Child tasks inherit counters.
+-F::
+--freq=::
+ Profile at this frequency.
+
+-m::
+--mmap-pages=::
+ Number of mmap data pages.
+
+-g::
+--call-graph::
+ Do call-graph (stack chain/backtrace) recording.
+
+-v::
+--verbose::
+ Be more verbose (show counter open errors, etc).
+
+-s::
+--stat::
+ Per thread counts.
+
+-d::
+--data::
+ Sample addresses.
+
+-n::
+--no-samples::
+ Don't sample.
SEE ALSO
--------
diff --git a/tools/perf/Documentation/perf-stat.txt b/tools/perf/Documentation/perf-stat.txt
index 0d74346d21a..484080dd5b6 100644
--- a/tools/perf/Documentation/perf-stat.txt
+++ b/tools/perf/Documentation/perf-stat.txt
@@ -40,7 +40,7 @@ OPTIONS
-a::
system-wide collection
--S::
+-c::
scale counter values
EXAMPLES
diff --git a/tools/perf/Documentation/perf-top.txt b/tools/perf/Documentation/perf-top.txt
index 539d0128972..4a7d558dc30 100644
--- a/tools/perf/Documentation/perf-top.txt
+++ b/tools/perf/Documentation/perf-top.txt
@@ -3,36 +3,122 @@ perf-top(1)
NAME
----
-perf-top - Run a command and profile it
+perf-top - System profiling tool.
SYNOPSIS
--------
[verse]
-'perf top' [-e <EVENT> | --event=EVENT] [-l] [-a] <command>
+'perf top' [-e <EVENT> | --event=EVENT] [<options>]
DESCRIPTION
-----------
-This command runs a command and gathers a performance counter profile
-from it.
+This command generates and displays a performance counter profile in realtime.
OPTIONS
-------
-<command>...::
- Any command you can specify in a shell.
+-a::
+--all-cpus::
+ System-wide collection. (default)
+
+-c <count>::
+--count=<count>::
+ Event period to sample.
+
+-C <cpu>::
+--CPU=<cpu>::
+ CPU to profile.
+
+-d <seconds>::
+--delay=<seconds>::
+ Number of seconds to delay between refreshes.
--e::
---event=::
+-e <event>::
+--event=<event>::
Select the PMU event. Selection can be a symbolic event name
(use 'perf list' to list all events) or a raw PMU
event (eventsel+umask) in the form of rNNN where NNN is a
- hexadecimal event descriptor.
+ hexadecimal event descriptor.
--a::
- system-wide collection
+-E <entries>::
+--entries=<entries>::
+ Display this many functions.
+
+-f <count>::
+--count-filter=<count>::
+ Only display functions with more events than this.
+
+-F <freq>::
+--freq=<freq>::
+ Profile at this frequency.
+
+-i::
+--inherit::
+ Child tasks inherit counters, only makes sens with -p option.
+
+-k <path>::
+--vmlinux=<path>::
+ Path to vmlinux. Required for annotation functionality.
+
+-m <pages>::
+--mmap-pages=<pages>::
+ Number of mmapped data pages.
+
+-p <pid>::
+--pid=<pid>::
+ Profile events on existing pid.
+
+-r <priority>::
+--realtime=<priority>::
+ Collect data with this RT SCHED_FIFO priority.
+
+-s <symbol>::
+--sym-annotate=<symbol>::
+ Annotate this symbol. Requires -k option.
+
+-v::
+--verbose::
+ Be more verbose (show counter open errors, etc).
+
+-z::
+--zero::
+ Zero history across display updates.
+
+INTERACTIVE PROMPTING KEYS
+--------------------------
+
+[d]::
+ Display refresh delay.
+
+[e]::
+ Number of entries to display.
+
+[E]::
+ Event to display when multiple counters are active.
+
+[f]::
+ Profile display filter (>= hit count).
+
+[F]::
+ Annotation display filter (>= % of total).
+
+[s]::
+ Annotate symbol.
+
+[S]::
+ Stop annotation, return to full profile display.
+
+[w]::
+ Toggle between weighted sum and individual count[E]r profile.
+
+[z]::
+ Toggle event count zeroing across display updates.
+
+[qQ]::
+ Quit.
+
+Pressing any unmapped key displays a menu, and prompts for input.
--l::
- scale counter values
SEE ALSO
--------
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 4b20fa47c3a..60411e94113 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -158,8 +158,10 @@ uname_P := $(shell sh -c 'uname -p 2>/dev/null || echo not')
uname_V := $(shell sh -c 'uname -v 2>/dev/null || echo not')
# If we're on a 64-bit kernel, use -m64
-ifneq ($(patsubst %64,%,$(uname_M)),$(uname_M))
- M64 := -m64
+ifndef NO_64BIT
+ ifneq ($(patsubst %64,%,$(uname_M)),$(uname_M))
+ M64 := -m64
+ endif
endif
# CFLAGS and LDFLAGS are for the users to override from the command line.
@@ -345,7 +347,6 @@ BUILTIN_OBJS += builtin-stat.o
BUILTIN_OBJS += builtin-top.o
PERFLIBS = $(LIB_FILE)
-EXTLIBS = -lbfd -liberty
#
# Platform specific tweaks
@@ -374,6 +375,32 @@ ifeq ($(uname_S),Darwin)
PTHREAD_LIBS =
endif
+ifneq ($(shell sh -c "(echo '\#include <libelf.h>'; echo 'int main(void) { Elf * elf = elf_begin(0, ELF_C_READ_MMAP, 0); return (long)elf; }') | $(CC) -x c - $(ALL_CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -o /dev/null $(ALL_LDFLAGS) > /dev/null 2>&1 && echo y"), y)
+ msg := $(error No libelf.h/libelf found, please install libelf-dev/elfutils-libelf-devel);
+endif
+
+ifdef NO_DEMANGLE
+ BASIC_CFLAGS += -DNO_DEMANGLE
+else
+
+ has_bfd := $(shell sh -c "(echo '\#include <bfd.h>'; echo 'int main(void) { bfd_demangle(0, 0, 0); return 0; }') | $(CC) -x c - $(ALL_CFLAGS) -o /dev/null $(ALL_LDFLAGS) -lbfd > /dev/null 2>&1 && echo y")
+
+ has_bfd_iberty := $(shell sh -c "(echo '\#include <bfd.h>'; echo 'int main(void) { bfd_demangle(0, 0, 0); return 0; }') | $(CC) -x c - $(ALL_CFLAGS) -o /dev/null $(ALL_LDFLAGS) -lbfd -liberty > /dev/null 2>&1 && echo y")
+
+ has_bfd_iberty_z := $(shell sh -c "(echo '\#include <bfd.h>'; echo 'int main(void) { bfd_demangle(0, 0, 0); return 0; }') | $(CC) -x c - $(ALL_CFLAGS) -o /dev/null $(ALL_LDFLAGS) -lbfd -liberty -lz > /dev/null 2>&1 && echo y")
+
+ ifeq ($(has_bfd),y)
+ EXTLIBS += -lbfd
+ else ifeq ($(has_bfd_iberty),y)
+ EXTLIBS += -lbfd -liberty
+ else ifeq ($(has_bfd_iberty_z),y)
+ EXTLIBS += -lbfd -liberty -lz
+ else
+ msg := $(warning No bfd.h/libbfd found, install binutils-dev[el] to gain symbol demangling)
+ BASIC_CFLAGS += -DNO_DEMANGLE
+ endif
+endif
+
ifndef CC_LD_DYNPATH
ifdef NO_R_TO_GCC_LINKER
# Some gcc does not accept and pass -R to the linker to specify
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 6da09928130..0345aad8eba 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -412,6 +412,7 @@ static void create_counter(int counter, int cpu, pid_t pid)
if (call_graph)
attr->sample_type |= PERF_SAMPLE_CALLCHAIN;
+
attr->mmap = track;
attr->comm = track;
attr->inherit = (cpu < 0) && inherit;
@@ -524,10 +525,14 @@ static int __cmd_record(int argc, const char **argv)
signal(SIGCHLD, sig_handler);
signal(SIGINT, sig_handler);
- if (!stat(output_name, &st) && !force && !append_file) {
- fprintf(stderr, "Error, output file %s exists, use -A to append or -f to overwrite.\n",
- output_name);
- exit(-1);
+ if (!stat(output_name, &st) && st.st_size) {
+ if (!force && !append_file) {
+ fprintf(stderr, "Error, output file %s exists, use -A to append or -f to overwrite.\n",
+ output_name);
+ exit(-1);
+ }
+ } else {
+ append_file = 0;
}
flags = O_CREAT|O_RDWR;
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index ce4f28645e6..99274cec0ad 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -31,7 +31,7 @@
static char const *input_name = "perf.data";
static char *vmlinux = NULL;
-static char default_sort_order[] = "comm,dso";
+static char default_sort_order[] = "comm,dso,symbol";
static char *sort_order = default_sort_order;
static char *dso_list_str, *comm_list_str, *sym_list_str,
*col_width_list_str;
@@ -68,7 +68,7 @@ static int callchain;
static
struct callchain_param callchain_param = {
- .mode = CHAIN_GRAPH_ABS,
+ .mode = CHAIN_GRAPH_REL,
.min_percent = 0.5
};
@@ -112,7 +112,9 @@ struct read_event {
struct perf_event_header header;
u32 pid,tid;
u64 value;
- u64 format[3];
+ u64 time_enabled;
+ u64 time_running;
+ u64 id;
};
typedef union event_union {
@@ -698,7 +700,8 @@ sort__sym_print(FILE *fp, struct hist_entry *self, unsigned int width __used)
size_t ret = 0;
if (verbose)
- ret += repsep_fprintf(fp, "%#018llx ", (u64)self->ip);
+ ret += repsep_fprintf(fp, "%#018llx %c ", (u64)self->ip,
+ dso__symtab_origin(self->dso));
ret += repsep_fprintf(fp, "[%c] ", self->level);
if (self->sym) {
@@ -888,6 +891,21 @@ ipchain__fprintf_graph(FILE *fp, struct callchain_list *chain, int depth,
return ret;
}
+static struct symbol *rem_sq_bracket;
+static struct callchain_list rem_hits;
+
+static void init_rem_hits(void)
+{
+ rem_sq_bracket = malloc(sizeof(*rem_sq_bracket) + 6);
+ if (!rem_sq_bracket) {
+ fprintf(stderr, "Not enough memory to display remaining hits\n");
+ return;
+ }
+
+ strcpy(rem_sq_bracket->name, "[...]");
+ rem_hits.sym = rem_sq_bracket;
+}
+
static size_t
callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
u64 total_samples, int depth, int depth_mask)
@@ -897,25 +915,34 @@ callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
struct callchain_list *chain;
int new_depth_mask = depth_mask;
u64 new_total;
+ u64 remaining;
size_t ret = 0;
int i;
if (callchain_param.mode == CHAIN_GRAPH_REL)
- new_total = self->cumul_hit;
+ new_total = self->children_hit;
else
new_total = total_samples;
+ remaining = new_total;
+
node = rb_first(&self->rb_root);
while (node) {
+ u64 cumul;
+
child = rb_entry(node, struct callchain_node, rb_node);
+ cumul = cumul_hits(child);
+ remaining -= cumul;
/*
* The depth mask manages the output of pipes that show
* the depth. We don't want to keep the pipes of the current
- * level for the last child of this depth
+ * level for the last child of this depth.
+ * Except if we have remaining filtered hits. They will
+ * supersede the last child
*/
next = rb_next(node);
- if (!next)
+ if (!next && (callchain_param.mode != CHAIN_GRAPH_REL || !remaining))
new_depth_mask &= ~(1 << (depth - 1));
/*
@@ -930,7 +957,7 @@ callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
ret += ipchain__fprintf_graph(fp, chain, depth,
new_depth_mask, i++,
new_total,
- child->cumul_hit);
+ cumul);
}
ret += callchain__fprintf_graph(fp, child, new_total,
depth + 1,
@@ -938,6 +965,19 @@ callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
node = next;
}
+ if (callchain_param.mode == CHAIN_GRAPH_REL &&
+ remaining && remaining != new_total) {
+
+ if (!rem_sq_bracket)
+ return ret;
+
+ new_depth_mask &= ~(1 << (depth - 1));
+
+ ret += ipchain__fprintf_graph(fp, &rem_hits, depth,
+ new_depth_mask, 0, new_total,
+ remaining);
+ }
+
return ret;
}
@@ -1358,6 +1398,8 @@ static size_t output__fprintf(FILE *fp, u64 total_samples)
unsigned int width;
char *col_width = col_width_list_str;
+ init_rem_hits();
+
fprintf(fp, "# Samples: %Ld\n", (u64)total_samples);
fprintf(fp, "#\n");
@@ -1424,11 +1466,13 @@ print_entries:
if (sort_order == default_sort_order &&
parent_pattern == default_parent_pattern) {
fprintf(fp, "#\n");
- fprintf(fp, "# (For more details, try: perf report --sort comm,dso,symbol)\n");
+ fprintf(fp, "# (For a higher level overview, try: perf report --sort comm,dso)\n");
fprintf(fp, "#\n");
}
fprintf(fp, "\n");
+ free(rem_sq_bracket);
+
return ret;
}
@@ -1690,14 +1734,37 @@ static void trace_event(event_t *event)
dprintf(".\n");
}
+static struct perf_header *header;
+
+static struct perf_counter_attr *perf_header__find_attr(u64 id)
+{
+ int i;
+
+ for (i = 0; i < header->attrs; i++) {
+ struct perf_header_attr *attr = header->attr[i];
+ int j;
+
+ for (j = 0; j < attr->ids; j++) {
+ if (attr->id[j] == id)
+ return &attr->attr;
+ }
+ }
+
+ return NULL;
+}
+
static int
process_read_event(event_t *event, unsigned long offset, unsigned long head)
{
- dprintf("%p [%p]: PERF_EVENT_READ: %d %d %Lu\n",
+ struct perf_counter_attr *attr = perf_header__find_attr(event->read.id);
+
+ dprintf("%p [%p]: PERF_EVENT_READ: %d %d %s %Lu\n",
(void *)(offset + head),
(void *)(long)(event->header.size),
event->read.pid,
event->read.tid,
+ attr ? __event_name(attr->type, attr->config)
+ : "FAIL",
event->read.value);
return 0;
@@ -1743,8 +1810,6 @@ process_event(event_t *event, unsigned long offset, unsigned long head)
return 0;
}
-static struct perf_header *header;
-
static u64 perf_header__sample_type(void)
{
u64 sample_type = 0;
@@ -1812,6 +1877,13 @@ static int __cmd_report(void)
" -g?\n");
exit(-1);
}
+ } else if (callchain_param.mode != CHAIN_NONE && !callchain) {
+ callchain = 1;
+ if (register_callchain_param(&callchain_param) < 0) {
+ fprintf(stderr, "Can't register callchain"
+ " params\n");
+ exit(-1);
+ }
}
if (load_kernel() < 0) {
@@ -1950,6 +2022,13 @@ parse_callchain_opt(const struct option *opt __used, const char *arg,
else if (!strncmp(tok, "fractal", strlen(arg)))
callchain_param.mode = CHAIN_GRAPH_REL;
+ else if (!strncmp(tok, "none", strlen(arg))) {
+ callchain_param.mode = CHAIN_NONE;
+ callchain = 0;
+
+ return 0;
+ }
+
else
return -1;
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index f9510eeeb6c..b4b06c7903e 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -496,7 +496,7 @@ static const struct option options[] = {
"stat events on existing pid"),
OPT_BOOLEAN('a', "all-cpus", &system_wide,
"system-wide collection from all CPUs"),
- OPT_BOOLEAN('S', "scale", &scale,
+ OPT_BOOLEAN('c', "scale", &scale,
"scale/normalize counters"),
OPT_BOOLEAN('v', "verbose", &verbose,
"be more verbose (show counter open errors, etc)"),
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index f139f1ab933..7de28ce9ca2 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -31,6 +31,8 @@
#include <fcntl.h>
#include <stdio.h>
+#include <termios.h>
+#include <unistd.h>
#include <errno.h>
#include <time.h>
@@ -54,7 +56,7 @@ static int system_wide = 0;
static int default_interval = 100000;
-static u64 count_filter = 5;
+static int count_filter = 5;
static int print_entries = 15;
static int target_pid = -1;
@@ -69,15 +71,28 @@ static int freq = 0;
static int verbose = 0;
static char *vmlinux = NULL;
-static char *sym_filter;
-static unsigned long filter_start;
-static unsigned long filter_end;
-
static int delay_secs = 2;
static int zero;
static int dump_symtab;
/*
+ * Source
+ */
+
+struct source_line {
+ u64 eip;
+ unsigned long count[MAX_COUNTERS];
+ char *line;
+ struct source_line *next;
+};
+
+static char *sym_filter = NULL;
+struct sym_entry *sym_filter_entry = NULL;
+static int sym_pcnt_filter = 5;
+static int sym_counter = 0;
+static int display_weighted = -1;
+
+/*
* Symbols
*/
@@ -91,9 +106,237 @@ struct sym_entry {
unsigned long snap_count;
double weight;
int skip;
+ struct source_line *source;
+ struct source_line *lines;
+ struct source_line **lines_tail;
+ pthread_mutex_t source_lock;
};
-struct sym_entry *sym_filter_entry;
+/*
+ * Source functions
+ */
+
+static void parse_source(struct sym_entry *syme)
+{
+ struct symbol *sym;
+ struct module *module;
+ struct section *section = NULL;
+ FILE *file;
+ char command[PATH_MAX*2], *path = vmlinux;
+ u64 start, end, len;
+
+ if (!syme)
+ return;
+
+ if (syme->lines) {
+ pthread_mutex_lock(&syme->source_lock);
+ goto out_assign;
+ }
+
+ sym = (struct symbol *)(syme + 1);
+ module = sym->module;
+
+ if (module)
+ path = module->path;
+ if (!path)
+ return;
+
+ start = sym->obj_start;
+ if (!start)
+ start = sym->start;
+
+ if (module) {
+ section = module->sections->find_section(module->sections, ".text");
+ if (section)
+ start -= section->vma;
+ }
+
+ end = start + sym->end - sym->start + 1;
+ len = sym->end - sym->start;
+
+ sprintf(command, "objdump --start-address=0x%016Lx --stop-address=0x%016Lx -dS %s", start, end, path);
+
+ file = popen(command, "r");
+ if (!file)
+ return;
+
+ pthread_mutex_lock(&syme->source_lock);
+ syme->lines_tail = &syme->lines;
+ while (!feof(file)) {
+ struct source_line *src;
+ size_t dummy = 0;
+ char *c;
+
+ src = malloc(sizeof(struct source_line));
+ assert(src != NULL);
+ memset(src, 0, sizeof(struct source_line));
+
+ if (getline(&src->line, &dummy, file) < 0)
+ break;
+ if (!src->line)
+ break;
+
+ c = strchr(src->line, '\n');
+ if (c)
+ *c = 0;
+
+ src->next = NULL;
+ *syme->lines_tail = src;
+ syme->lines_tail = &src->next;
+
+ if (strlen(src->line)>8 && src->line[8] == ':') {
+ src->eip = strtoull(src->line, NULL, 16);
+ if (section)
+ src->eip += section->vma;
+ }
+ if (strlen(src->line)>8 && src->line[16] == ':') {
+ src->eip = strtoull(src->line, NULL, 16);
+ if (section)
+ src->eip += section->vma;
+ }
+ }
+ pclose(file);
+out_assign:
+ sym_filter_entry = syme;
+ pthread_mutex_unlock(&syme->source_lock);
+}
+
+static void __zero_source_counters(struct sym_entry *syme)
+{
+ int i;
+ struct source_line *line;
+
+ line = syme->lines;
+ while (line) {
+ for (i = 0; i < nr_counters; i++)
+ line->count[i] = 0;
+ line = line->next;
+ }
+}
+
+static void record_precise_ip(struct sym_entry *syme, int counter, u64 ip)
+{
+ struct source_line *line;
+
+ if (syme != sym_filter_entry)
+ return;
+
+ if (pthread_mutex_trylock(&syme->source_lock))
+ return;
+
+ if (!syme->source)
+ goto out_unlock;
+
+ for (line = syme->lines; line; line = line->next) {
+ if (line->eip == ip) {
+ line->count[counter]++;
+ break;
+ }
+ if (line->eip > ip)
+ break;
+ }
+out_unlock:
+ pthread_mutex_unlock(&syme->source_lock);
+}
+
+static void lookup_sym_source(struct sym_entry *syme)
+{
+ struct symbol *symbol = (struct symbol *)(syme + 1);
+ struct source_line *line;
+ char pattern[PATH_MAX];
+ char *idx;
+
+ sprintf(pattern, "<%s>:", symbol->name);
+
+ if (symbol->module) {
+ idx = strstr(pattern, "\t");
+ if (idx)
+ *idx = 0;
+ }
+
+ pthread_mutex_lock(&syme->source_lock);
+ for (line = syme->lines; line; line = line->next) {
+ if (strstr(line->line, pattern)) {
+ syme->source = line;
+ break;
+ }
+ }
+ pthread_mutex_unlock(&syme->source_lock);
+}
+
+static void show_lines(struct source_line *queue, int count, int total)
+{
+ int i;
+ struct source_line *line;
+
+ line = queue;
+ for (i = 0; i < count; i++) {
+ float pcnt = 100.0*(float)line->count[sym_counter]/(float)total;
+
+ printf("%8li %4.1f%%\t%s\n", line->count[sym_counter], pcnt, line->line);
+ line = line->next;
+ }
+}
+
+#define TRACE_COUNT 3
+
+static void show_details(struct sym_entry *syme)
+{
+ struct symbol *symbol;
+ struct source_line *line;
+ struct source_line *line_queue = NULL;
+ int displayed = 0;
+ int line_queue_count = 0, total = 0, more = 0;
+
+ if (!syme)
+ return;
+
+ if (!syme->source)
+ lookup_sym_source(syme);
+
+ if (!syme->source)
+ return;
+
+ symbol = (struct symbol *)(syme + 1);
+ printf("Showing %s for %s\n", event_name(sym_counter), symbol->name);
+ printf(" Events Pcnt (>=%d%%)\n", sym_pcnt_filter);
+
+ pthread_mutex_lock(&syme->source_lock);
+ line = syme->source;
+ while (line) {
+ total += line->count[sym_counter];
+ line = line->next;
+ }
+
+ line = syme->source;
+ while (line) {
+ float pcnt = 0.0;
+
+ if (!line_queue_count)
+ line_queue = line;
+ line_queue_count++;
+
+ if (line->count[sym_counter])
+ pcnt = 100.0 * line->count[sym_counter] / (float)total;
+ if (pcnt >= (float)sym_pcnt_filter) {
+ if (displayed <= print_entries)
+ show_lines(line_queue, line_queue_count, total);
+ else more++;
+ displayed += line_queue_count;
+ line_queue_count = 0;
+ line_queue = NULL;
+ } else if (line_queue_count > TRACE_COUNT) {
+ line_queue = line_queue->next;
+ line_queue_count--;
+ }
+
+ line->count[sym_counter] = zero ? 0 : line->count[sym_counter] * 7 / 8;
+ line = line->next;
+ }
+ pthread_mutex_unlock(&syme->source_lock);
+ if (more)
+ printf("%d lines not displayed, maybe increase display entries [e]\n", more);
+}
struct dso *kernel_dso;
@@ -112,6 +355,9 @@ static double sym_weight(const struct sym_entry *sym)
double weight = sym->snap_count;
int counter;
+ if (!display_weighted)
+ return weight;
+
for (counter = 1; counter < nr_counters-1; counter++)
weight *= sym->count[counter];
@@ -159,7 +405,7 @@ static void rb_insert_active_sym(struct rb_root *tree, struct sym_entry *se)
static void print_sym_table(void)
{
int printed = 0, j;
- int counter;
+ int counter, snap = !display_weighted ? sym_counter : 0;
float samples_per_sec = samples/delay_secs;
float ksamples_per_sec = (samples-userspace_samples)/delay_secs;
float sum_ksamples = 0.0;
@@ -175,7 +421,7 @@ static void print_sym_table(void)
pthread_mutex_unlock(&active_symbols_lock);
list_for_each_entry_safe_from(syme, n, &active_symbols, node) {
- syme->snap_count = syme->count[0];
+ syme->snap_count = syme->count[snap];
if (syme->snap_count != 0) {
syme->weight = sym_weight(syme);
rb_insert_active_sym(&tmp, syme);
@@ -195,7 +441,7 @@ static void print_sym_table(void)
samples_per_sec,
100.0 - (100.0*((samples_per_sec-ksamples_per_sec)/samples_per_sec)));
- if (nr_counters == 1) {
+ if (nr_counters == 1 || !display_weighted) {
printf("%Ld", (u64)attrs[0].sample_period);
if (freq)
printf("Hz ");
@@ -203,7 +449,9 @@ static void print_sym_table(void)
printf(" ");
}
- for (counter = 0; counter < nr_counters; counter++) {
+ if (!display_weighted)
+ printf("%s", event_name(sym_counter));
+ else for (counter = 0; counter < nr_counters; counter++) {
if (counter)
printf("/");
@@ -228,6 +476,11 @@ static void print_sym_table(void)
printf("------------------------------------------------------------------------------\n\n");
+ if (sym_filter_entry) {
+ show_details(sym_filter_entry);
+ return;
+ }
+
if (nr_counters == 1)
printf(" samples pcnt");
else
@@ -242,13 +495,13 @@ static void print_sym_table(void)
struct symbol *sym = (struct symbol *)(syme + 1);
double pcnt;
- if (++printed > print_entries || syme->snap_count < count_filter)
+ if (++printed > print_entries || (int)syme->snap_count < count_filter)
continue;
pcnt = 100.0 - (100.0 * ((sum_ksamples - syme->snap_count) /
sum_ksamples));
- if (nr_counters == 1)
+ if (nr_counters == 1 || !display_weighted)
printf("%20.2f - ", syme->weight);
else
printf("%9.1f %10ld - ", syme->weight, syme->snap_count);
@@ -261,19 +514,250 @@ static void print_sym_table(void)
}
}
+static void prompt_integer(int *target, const char *msg)
+{
+ char *buf = malloc(0), *p;
+ size_t dummy = 0;
+ int tmp;
+
+ fprintf(stdout, "\n%s: ", msg);
+ if (getline(&buf, &dummy, stdin) < 0)
+ return;
+
+ p = strchr(buf, '\n');
+ if (p)
+ *p = 0;
+
+ p = buf;
+ while(*p) {
+ if (!isdigit(*p))
+ goto out_free;
+ p++;
+ }
+ tmp = strtoul(buf, NULL, 10);
+ *target = tmp;
+out_free:
+ free(buf);
+}
+
+static void prompt_percent(int *target, const char *msg)
+{
+ int tmp = 0;
+
+ prompt_integer(&tmp, msg);
+ if (tmp >= 0 && tmp <= 100)
+ *target = tmp;
+}
+
+static void prompt_symbol(struct sym_entry **target, const char *msg)
+{
+ char *buf = malloc(0), *p;
+ struct sym_entry *syme = *target, *n, *found = NULL;
+ size_t dummy = 0;
+
+ /* zero counters of active symbol */
+ if (syme) {
+ pthread_mutex_lock(&syme->source_lock);
+ __zero_source_counters(syme);
+ *target = NULL;
+ pthread_mutex_unlock(&syme->source_lock);
+ }
+
+ fprintf(stdout, "\n%s: ", msg);
+ if (getline(&buf, &dummy, stdin) < 0)
+ goto out_free;
+
+ p = strchr(buf, '\n');
+ if (p)
+ *p = 0;
+
+ pthread_mutex_lock(&active_symbols_lock);
+ syme = list_entry(active_symbols.next, struct sym_entry, node);
+ pthread_mutex_unlock(&active_symbols_lock);
+
+ list_for_each_entry_safe_from(syme, n, &active_symbols, node) {
+ struct symbol *sym = (struct symbol *)(syme + 1);
+
+ if (!strcmp(buf, sym->name)) {
+ found = syme;
+ break;
+ }
+ }
+
+ if (!found) {
+ fprintf(stderr, "Sorry, %s is not active.\n", sym_filter);
+ sleep(1);
+ return;
+ } else
+ parse_source(found);
+
+out_free:
+ free(buf);
+}
+
+static void print_mapped_keys(void)
+{
+ char *name = NULL;
+
+ if (sym_filter_entry) {
+ struct symbol *sym = (struct symbol *)(sym_filter_entry+1);
+ name = sym->name;
+ }
+
+ fprintf(stdout, "\nMapped keys:\n");
+ fprintf(stdout, "\t[d] display refresh delay. \t(%d)\n", delay_secs);
+ fprintf(stdout, "\t[e] display entries (lines). \t(%d)\n", print_entries);
+
+ if (nr_counters > 1)
+ fprintf(stdout, "\t[E] active event counter. \t(%s)\n", event_name(sym_counter));
+
+ fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", count_filter);
+
+ if (vmlinux) {
+ fprintf(stdout, "\t[F] annotate display filter (percent). \t(%d%%)\n", sym_pcnt_filter);
+ fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL");
+ fprintf(stdout, "\t[S] stop annotation.\n");
+ }
+
+ if (nr_counters > 1)
+ fprintf(stdout, "\t[w] toggle display weighted/count[E]r. \t(%d)\n", display_weighted ? 1 : 0);
+
+ fprintf(stdout, "\t[z] toggle sample zeroing. \t(%d)\n", zero ? 1 : 0);
+ fprintf(stdout, "\t[qQ] quit.\n");
+}
+
+static int key_mapped(int c)
+{
+ switch (c) {
+ case 'd':
+ case 'e':
+ case 'f':
+ case 'z':
+ case 'q':
+ case 'Q':
+ return 1;
+ case 'E':
+ case 'w':
+ return nr_counters > 1 ? 1 : 0;
+ case 'F':
+ case 's':
+ case 'S':
+ return vmlinux ? 1 : 0;
+ }
+
+ return 0;
+}
+
+static void handle_keypress(int c)
+{
+ if (!key_mapped(c)) {
+ struct pollfd stdin_poll = { .fd = 0, .events = POLLIN };
+ struct termios tc, save;
+
+ print_mapped_keys();
+ fprintf(stdout, "\nEnter selection, or unmapped key to continue: ");
+ fflush(stdout);
+
+ tcgetattr(0, &save);
+ tc = save;
+ tc.c_lflag &= ~(ICANON | ECHO);
+ tc.c_cc[VMIN] = 0;
+ tc.c_cc[VTIME] = 0;
+ tcsetattr(0, TCSANOW, &tc);
+
+ poll(&stdin_poll, 1, -1);
+ c = getc(stdin);
+
+ tcsetattr(0, TCSAFLUSH, &save);
+ if (!key_mapped(c))
+ return;
+ }
+
+ switch (c) {
+ case 'd':
+ prompt_integer(&delay_secs, "Enter display delay");
+ break;
+ case 'e':
+ prompt_integer(&print_entries, "Enter display entries (lines)");
+ break;
+ case 'E':
+ if (nr_counters > 1) {
+ int i;
+
+ fprintf(stderr, "\nAvailable events:");
+ for (i = 0; i < nr_counters; i++)
+ fprintf(stderr, "\n\t%d %s", i, event_name(i));
+
+ prompt_integer(&sym_counter, "Enter details event counter");
+
+ if (sym_counter >= nr_counters) {
+ fprintf(stderr, "Sorry, no such event, using %s.\n", event_name(0));
+ sym_counter = 0;
+ sleep(1);
+ }
+ } else sym_counter = 0;
+ break;
+ case 'f':
+ prompt_integer(&count_filter, "Enter display event count filter");
+ break;
+ case 'F':
+ prompt_percent(&sym_pcnt_filter, "Enter details display event filter (percent)");
+ break;
+ case 'q':
+ case 'Q':
+ printf("exiting.\n");
+ exit(0);
+ case 's':
+ prompt_symbol(&sym_filter_entry, "Enter details symbol");
+ break;
+ case 'S':
+ if (!sym_filter_entry)
+ break;
+ else {
+ struct sym_entry *syme = sym_filter_entry;
+
+ pthread_mutex_lock(&syme->source_lock);
+ sym_filter_entry = NULL;
+ __zero_source_counters(syme);
+ pthread_mutex_unlock(&syme->source_lock);
+ }
+ break;
+ case 'w':
+ display_weighted = ~display_weighted;
+ break;
+ case 'z':
+ zero = ~zero;
+ break;
+ }
+}
+
static void *display_thread(void *arg __used)
{
struct pollfd stdin_poll = { .fd = 0, .events = POLLIN };
- int delay_msecs = delay_secs * 1000;
+ struct termios tc, save;
+ int delay_msecs, c;
+
+ tcgetattr(0, &save);
+ tc = save;
+ tc.c_lflag &= ~(ICANON | ECHO);
+ tc.c_cc[VMIN] = 0;
+ tc.c_cc[VTIME] = 0;
- printf("PerfTop refresh period: %d seconds\n", delay_secs);
+repeat:
+ delay_msecs = delay_secs * 1000;
+ tcsetattr(0, TCSANOW, &tc);
+ /* trash return*/
+ getc(stdin);
do {
print_sym_table();
} while (!poll(&stdin_poll, 1, delay_msecs) == 1);
- printf("key pressed - exiting.\n");
- exit(0);
+ c = getc(stdin);
+ tcsetattr(0, TCSAFLUSH, &save);
+
+ handle_keypress(c);
+ goto repeat;
return NULL;
}
@@ -293,7 +777,6 @@ static const char *skip_symbols[] = {
static int symbol_filter(struct dso *self, struct symbol *sym)
{
- static int filter_match;
struct sym_entry *syme;
const char *name = sym->name;
int i;
@@ -315,6 +798,10 @@ static int symbol_filter(struct dso *self, struct symbol *sym)
return 1;
syme = dso__sym_priv(self, sym);
+ pthread_mutex_init(&syme->source_lock, NULL);
+ if (!sym_filter_entry && sym_filter && !strcmp(name, sym_filter))
+ sym_filter_entry = syme;
+
for (i = 0; skip_symbols[i]; i++) {
if (!strcmp(skip_symbols[i], name)) {
syme->skip = 1;
@@ -322,29 +809,6 @@ static int symbol_filter(struct dso *self, struct symbol *sym)
}
}
- if (filter_match == 1) {
- filter_end = sym->start;
- filter_match = -1;
- if (filter_end - filter_start > 10000) {
- fprintf(stderr,
- "hm, too large filter symbol <%s> - skipping.\n",
- sym_filter);
- fprintf(stderr, "symbol filter start: %016lx\n",
- filter_start);
- fprintf(stderr, " end: %016lx\n",
- filter_end);
- filter_end = filter_start = 0;
- sym_filter = NULL;
- sleep(1);
- }
- }
-
- if (filter_match == 0 && sym_filter && !strcmp(name, sym_filter)) {
- filter_match = 1;
- filter_start = sym->start;
- }
-
-
return 0;
}
@@ -380,8 +844,6 @@ out_delete_dso:
return -1;
}
-#define TRACE_COUNT 3
-
/*
* Binary search in the histogram table and record the hit:
*/
@@ -394,6 +856,7 @@ static void record_ip(u64 ip, int counter)
if (!syme->skip) {
syme->count[counter]++;
+ record_precise_ip(syme, counter, ip);
pthread_mutex_lock(&active_symbols_lock);
if (list_empty(&syme->node) || !syme->node.next)
__list_insert_active_sym(syme);
@@ -690,8 +1153,8 @@ static const struct option options[] = {
"put the counters into a counter group"),
OPT_BOOLEAN('i', "inherit", &inherit,
"child tasks inherit counters"),
- OPT_STRING('s', "sym-filter", &sym_filter, "pattern",
- "only display symbols matchig this pattern"),
+ OPT_STRING('s', "sym-annotate", &sym_filter, "symbol name",
+ "symbol to annotate - requires -k option"),
OPT_BOOLEAN('z', "zero", &zero,
"zero history across updates"),
OPT_INTEGER('F', "freq", &freq,
@@ -734,6 +1197,7 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
delay_secs = 1;
parse_symbols();
+ parse_source(sym_filter_entry);
/*
* Fill in the ones not specifically initialized via -c:
diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c
index 9d3c8141b8c..01147341164 100644
--- a/tools/perf/util/callchain.c
+++ b/tools/perf/util/callchain.c
@@ -13,6 +13,7 @@
#include <stdio.h>
#include <stdbool.h>
#include <errno.h>
+#include <math.h>
#include "callchain.h"
@@ -26,10 +27,14 @@ rb_insert_callchain(struct rb_root *root, struct callchain_node *chain,
struct rb_node **p = &root->rb_node;
struct rb_node *parent = NULL;
struct callchain_node *rnode;
+ u64 chain_cumul = cumul_hits(chain);
while (*p) {
+ u64 rnode_cumul;
+
parent = *p;
rnode = rb_entry(parent, struct callchain_node, rb_node);
+ rnode_cumul = cumul_hits(rnode);
switch (mode) {
case CHAIN_FLAT:
@@ -40,7 +45,7 @@ rb_insert_callchain(struct rb_root *root, struct callchain_node *chain,
break;
case CHAIN_GRAPH_ABS: /* Falldown */
case CHAIN_GRAPH_REL:
- if (rnode->cumul_hit < chain->cumul_hit)
+ if (rnode_cumul < chain_cumul)
p = &(*p)->rb_left;
else
p = &(*p)->rb_right;
@@ -87,7 +92,7 @@ static void __sort_chain_graph_abs(struct callchain_node *node,
chain_for_each_child(child, node) {
__sort_chain_graph_abs(child, min_hit);
- if (child->cumul_hit >= min_hit)
+ if (cumul_hits(child) >= min_hit)
rb_insert_callchain(&node->rb_root, child,
CHAIN_GRAPH_ABS);
}
@@ -108,11 +113,11 @@ static void __sort_chain_graph_rel(struct callchain_node *node,
u64 min_hit;
node->rb_root = RB_ROOT;
- min_hit = node->cumul_hit * min_percent / 100.0;
+ min_hit = ceil(node->children_hit * min_percent);
chain_for_each_child(child, node) {
__sort_chain_graph_rel(child, min_percent);
- if (child->cumul_hit >= min_hit)
+ if (cumul_hits(child) >= min_hit)
rb_insert_callchain(&node->rb_root, child,
CHAIN_GRAPH_REL);
}
@@ -122,7 +127,7 @@ static void
sort_chain_graph_rel(struct rb_root *rb_root, struct callchain_node *chain_root,
u64 min_hit __used, struct callchain_param *param)
{
- __sort_chain_graph_rel(chain_root, param->min_percent);
+ __sort_chain_graph_rel(chain_root, param->min_percent / 100.0);
rb_root->rb_node = chain_root->rb_root.rb_node;
}
@@ -211,7 +216,8 @@ add_child(struct callchain_node *parent, struct ip_callchain *chain,
new = create_child(parent, false);
fill_node(new, chain, start, syms);
- new->cumul_hit = new->hit = 1;
+ new->children_hit = 0;
+ new->hit = 1;
}
/*
@@ -241,7 +247,8 @@ split_add_child(struct callchain_node *parent, struct ip_callchain *chain,
/* split the hits */
new->hit = parent->hit;
- new->cumul_hit = parent->cumul_hit;
+ new->children_hit = parent->children_hit;
+ parent->children_hit = cumul_hits(new);
new->val_nr = parent->val_nr - idx_local;
parent->val_nr = idx_local;
@@ -249,6 +256,7 @@ split_add_child(struct callchain_node *parent, struct ip_callchain *chain,
if (idx_total < chain->nr) {
parent->hit = 0;
add_child(parent, chain, idx_total, syms);
+ parent->children_hit++;
} else {
parent->hit = 1;
}
@@ -269,13 +277,13 @@ __append_chain_children(struct callchain_node *root, struct ip_callchain *chain,
unsigned int ret = __append_chain(rnode, chain, start, syms);
if (!ret)
- goto cumul;
+ goto inc_children_hit;
}
/* nothing in children, add to the current node */
add_child(root, chain, start, syms);
-cumul:
- root->cumul_hit++;
+inc_children_hit:
+ root->children_hit++;
}
static int
@@ -317,8 +325,6 @@ __append_chain(struct callchain_node *root, struct ip_callchain *chain,
/* we match 100% of the path, increment the hit */
if (i - start == root->val_nr && i == chain->nr) {
root->hit++;
- root->cumul_hit++;
-
return 0;
}
@@ -331,5 +337,7 @@ __append_chain(struct callchain_node *root, struct ip_callchain *chain,
void append_chain(struct callchain_node *root, struct ip_callchain *chain,
struct symbol **syms)
{
+ if (!chain->nr)
+ return;
__append_chain_children(root, chain, syms, 0);
}
diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h
index 7812122bea1..a926ae4f5a1 100644
--- a/tools/perf/util/callchain.h
+++ b/tools/perf/util/callchain.h
@@ -7,6 +7,7 @@
#include "symbol.h"
enum chain_mode {
+ CHAIN_NONE,
CHAIN_FLAT,
CHAIN_GRAPH_ABS,
CHAIN_GRAPH_REL
@@ -21,7 +22,7 @@ struct callchain_node {
struct rb_root rb_root; /* sorted tree of children */
unsigned int val_nr;
u64 hit;
- u64 cumul_hit; /* hit + hits of children */
+ u64 children_hit;
};
struct callchain_param;
@@ -48,6 +49,11 @@ static inline void callchain_init(struct callchain_node *node)
INIT_LIST_HEAD(&node->val);
}
+static inline u64 cumul_hits(struct callchain_node *node)
+{
+ return node->hit + node->children_hit;
+}
+
int register_callchain_param(struct callchain_param *param);
void append_chain(struct callchain_node *root, struct ip_callchain *chain,
struct symbol **syms);
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 450384b3bbe..b92a457ca32 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -185,6 +185,8 @@ static void do_read(int fd, void *buf, size_t size)
if (ret < 0)
die("failed to read");
+ if (ret == 0)
+ die("failed to read: missing data");
size -= ret;
buf += ret;
@@ -213,9 +215,10 @@ struct perf_header *perf_header__read(int fd)
for (i = 0; i < nr_attrs; i++) {
struct perf_header_attr *attr;
- off_t tmp = lseek(fd, 0, SEEK_CUR);
+ off_t tmp;
do_read(fd, &f_attr, sizeof(f_attr));
+ tmp = lseek(fd, 0, SEEK_CUR);
attr = perf_header_attr__new(&f_attr.attr);
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 7bdad8df22a..4858d83b3b6 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -121,13 +121,29 @@ static unsigned long hw_cache_stat[C(MAX)] = {
(strcmp(sys_dirent.d_name, ".")) && \
(strcmp(sys_dirent.d_name, "..")))
+static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
+{
+ char evt_path[MAXPATHLEN];
+ int fd;
+
+ snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path,
+ sys_dir->d_name, evt_dir->d_name);
+ fd = open(evt_path, O_RDONLY);
+ if (fd < 0)
+ return -EINVAL;
+ close(fd);
+
+ return 0;
+}
+
#define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next, file, st) \
while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next) \
if (snprintf(file, MAXPATHLEN, "%s/%s/%s", debugfs_path, \
sys_dirent.d_name, evt_dirent.d_name) && \
(!stat(file, &st)) && (S_ISDIR(st.st_mode)) && \
(strcmp(evt_dirent.d_name, ".")) && \
- (strcmp(evt_dirent.d_name, "..")))
+ (strcmp(evt_dirent.d_name, "..")) && \
+ (!tp_event_has_id(&sys_dirent, &evt_dirent)))
#define MAX_EVENT_LENGTH 30
@@ -223,9 +239,15 @@ char *event_name(int counter)
{
u64 config = attrs[counter].config;
int type = attrs[counter].type;
+
+ return __event_name(type, config);
+}
+
+char *__event_name(int type, u64 config)
+{
static char buf[32];
- if (attrs[counter].type == PERF_TYPE_RAW) {
+ if (type == PERF_TYPE_RAW) {
sprintf(buf, "raw 0x%llx", config);
return buf;
}
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index 1ea5d09b6eb..192a962e3a0 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -10,6 +10,7 @@ extern int nr_counters;
extern struct perf_counter_attr attrs[MAX_COUNTERS];
extern char *event_name(int ctr);
+extern char *__event_name(int type, u64 config);
extern int parse_events(const struct option *opt, const char *str, int unset);
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index b4fe0579bd6..f1dcede1430 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -6,7 +6,16 @@
#include <libelf.h>
#include <gelf.h>
#include <elf.h>
+
+#ifndef NO_DEMANGLE
#include <bfd.h>
+#else
+static inline
+char *bfd_demangle(void __used *v, const char __used *c, int __used i)
+{
+ return NULL;
+}
+#endif
const char *sym_hist_filter;
@@ -15,6 +24,16 @@ const char *sym_hist_filter;
#define DMGL_ANSI (1 << 1) /* Include const, volatile, etc */
#endif
+enum dso_origin {
+ DSO__ORIG_KERNEL = 0,
+ DSO__ORIG_JAVA_JIT,
+ DSO__ORIG_FEDORA,
+ DSO__ORIG_UBUNTU,
+ DSO__ORIG_BUILDID,
+ DSO__ORIG_DSO,
+ DSO__ORIG_NOT_FOUND,
+};
+
static struct symbol *symbol__new(u64 start, u64 len,
const char *name, unsigned int priv_size,
u64 obj_start, int verbose)
@@ -72,6 +91,7 @@ struct dso *dso__new(const char *name, unsigned int sym_priv_size)
self->sym_priv_size = sym_priv_size;
self->find_symbol = dso__find_symbol;
self->slen_calculated = 0;
+ self->origin = DSO__ORIG_NOT_FOUND;
}
return self;
@@ -652,11 +672,85 @@ out_close:
return err;
}
+#define BUILD_ID_SIZE 128
+
+static char *dso__read_build_id(struct dso *self, int verbose)
+{
+ int i;
+ GElf_Ehdr ehdr;
+ GElf_Shdr shdr;
+ Elf_Data *build_id_data;
+ Elf_Scn *sec;
+ char *build_id = NULL, *bid;
+ unsigned char *raw;
+ Elf *elf;
+ int fd = open(self->name, O_RDONLY);
+
+ if (fd < 0)
+ goto out;
+
+ elf = elf_begin(fd, ELF_C_READ_MMAP, NULL);
+ if (elf == NULL) {
+ if (verbose)
+ fprintf(stderr, "%s: cannot read %s ELF file.\n",
+ __func__, self->name);
+ goto out_close;
+ }
+
+ if (gelf_getehdr(elf, &ehdr) == NULL) {
+ if (verbose)
+ fprintf(stderr, "%s: cannot get elf header.\n", __func__);
+ goto out_elf_end;
+ }
+
+ sec = elf_section_by_name(elf, &ehdr, &shdr, ".note.gnu.build-id", NULL);
+ if (sec == NULL)
+ goto out_elf_end;
+
+ build_id_data = elf_getdata(sec, NULL);
+ if (build_id_data == NULL)
+ goto out_elf_end;
+ build_id = malloc(BUILD_ID_SIZE);
+ if (build_id == NULL)
+ goto out_elf_end;
+ raw = build_id_data->d_buf + 16;
+ bid = build_id;
+
+ for (i = 0; i < 20; ++i) {
+ sprintf(bid, "%02x", *raw);
+ ++raw;
+ bid += 2;
+ }
+ if (verbose >= 2)
+ printf("%s(%s): %s\n", __func__, self->name, build_id);
+out_elf_end:
+ elf_end(elf);
+out_close:
+ close(fd);
+out:
+ return build_id;
+}
+
+char dso__symtab_origin(const struct dso *self)
+{
+ static const char origin[] = {
+ [DSO__ORIG_KERNEL] = 'k',
+ [DSO__ORIG_JAVA_JIT] = 'j',
+ [DSO__ORIG_FEDORA] = 'f',
+ [DSO__ORIG_UBUNTU] = 'u',
+ [DSO__ORIG_BUILDID] = 'b',
+ [DSO__ORIG_DSO] = 'd',
+ };
+
+ if (self == NULL || self->origin == DSO__ORIG_NOT_FOUND)
+ return '!';
+ return origin[self->origin];
+}
+
int dso__load(struct dso *self, symbol_filter_t filter, int verbose)
{
- int size = strlen(self->name) + sizeof("/usr/lib/debug%s.debug");
- char *name = malloc(size);
- int variant = 0;
+ int size = PATH_MAX;
+ char *name = malloc(size), *build_id = NULL;
int ret = -1;
int fd;
@@ -665,26 +759,43 @@ int dso__load(struct dso *self, symbol_filter_t filter, int verbose)
self->adjust_symbols = 0;
- if (strncmp(self->name, "/tmp/perf-", 10) == 0)
- return dso__load_perf_map(self, filter, verbose);
+ if (strncmp(self->name, "/tmp/perf-", 10) == 0) {
+ ret = dso__load_perf_map(self, filter, verbose);
+ self->origin = ret > 0 ? DSO__ORIG_JAVA_JIT :
+ DSO__ORIG_NOT_FOUND;
+ return ret;
+ }
+
+ self->origin = DSO__ORIG_FEDORA - 1;
more:
do {
- switch (variant) {
- case 0: /* Fedora */
+ self->origin++;
+ switch (self->origin) {
+ case DSO__ORIG_FEDORA:
snprintf(name, size, "/usr/lib/debug%s.debug", self->name);
break;
- case 1: /* Ubuntu */
+ case DSO__ORIG_UBUNTU:
snprintf(name, size, "/usr/lib/debug%s", self->name);
break;
- case 2: /* Sane people */
+ case DSO__ORIG_BUILDID:
+ build_id = dso__read_build_id(self, verbose);
+ if (build_id != NULL) {
+ snprintf(name, size,
+ "/usr/lib/debug/.build-id/%.2s/%s.debug",
+ build_id, build_id + 2);
+ free(build_id);
+ break;
+ }
+ self->origin++;
+ /* Fall thru */
+ case DSO__ORIG_DSO:
snprintf(name, size, "%s", self->name);
break;
default:
goto out;
}
- variant++;
fd = open(name, O_RDONLY);
} while (fd < 0);
@@ -820,6 +931,9 @@ int dso__load_kernel(struct dso *self, const char *vmlinux,
if (err <= 0)
err = dso__load_kallsyms(self, filter, verbose);
+ if (err > 0)
+ self->origin = DSO__ORIG_KERNEL;
+
return err;
}
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 2f92b21c712..1e003ec2f4b 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -26,6 +26,7 @@ struct dso {
unsigned int sym_priv_size;
unsigned char adjust_symbols;
unsigned char slen_calculated;
+ unsigned char origin;
char name[0];
};
@@ -49,6 +50,7 @@ int dso__load_modules(struct dso *self, symbol_filter_t filter, int verbose);
int dso__load(struct dso *self, symbol_filter_t filter, int verbose);
size_t dso__fprintf(struct dso *self, FILE *fp);
+char dso__symtab_origin(const struct dso *self);
void symbol__init(void);
#endif /* _PERF_SYMBOL_ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 12:27:21 +0000