diff options
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/builtin-sched.c | 152 |
1 files changed, 134 insertions, 18 deletions
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index c66e6a32137..6ec4f51d536 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -57,7 +57,7 @@ static u64 sample_type; #define BUG_ON(x) assert(!(x)) -#define DEBUG 1 +#define DEBUG 0 typedef unsigned long long nsec_t; @@ -238,15 +238,14 @@ static struct sched_event *last_event(struct task_desc *task) } static void -add_sched_event_run(struct task_desc *task, nsec_t timestamp, - unsigned long duration) +add_sched_event_run(struct task_desc *task, nsec_t timestamp, u64 duration) { struct sched_event *event, *curr_event = last_event(task); /* - * optimize an existing RUN event by merging this one - * to it: - */ + * 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; @@ -376,7 +375,7 @@ void parse_line(char *line) dprintk("parsed: %s - %ld %Ld: %s - <%s %ld> (%ld %ld)\n", comm, pid, - timestamp, + timestamp, func_str, comm2, pid2, @@ -429,7 +428,7 @@ static void add_cross_task_wakeups(void) } static void -process_sched_event(struct task_desc *this_task, struct sched_event *event) +process_sched_event(struct task_desc *this_task __used, struct sched_event *event) { int ret = 0; nsec_t now; @@ -744,9 +743,9 @@ static void run_one_test(void) #if 0 /* - * rusage statistics done by the parent, these are less - * accurate than the sum_exec_runtime based statistics: - */ + * rusage statistics done by the parent, these are less + * accurate than the sum_exec_runtime based statistics: + */ printk(" [%0.2f / %0.2f]", (double)parent_cpu_usage/1e6, (double)runavg_parent_cpu_usage/1e6); @@ -798,16 +797,128 @@ process_comm_event(event_t *event, unsigned long offset, unsigned long head) return 0; } -static void process_sched_wakeup_event(struct event *event, +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; +}; + +static void +process_sched_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; + 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 void process_sched_switch_event(struct event *event, +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; +}; + +#define MAX_CPUS 4096 + +unsigned long cpu_last_switched[MAX_CPUS]; + +static void +process_sched_switch_event(struct trace_switch_event *switch_event, struct event *event, int cpu __used, u64 timestamp __used, struct thread *thread __used) { + struct task_desc *prev, *next; + u64 timestamp0; + s64 delta; + 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); + + 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); +} + +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; +}; + +static void +process_sched_fork_event(struct trace_fork_event *fork_event, struct event *event, + int cpu __used, u64 timestamp __used, struct thread *thread __used) +{ + 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 void process_sched_exit_event(struct event *event, + int cpu __used, u64 timestamp __used, struct thread *thread __used) +{ + printf("sched_exit event %p\n", event); } static void @@ -833,9 +944,15 @@ process_raw_event(event_t *raw_event, void *more_data, raw_event->header.type, type, event->name); if (!strcmp(event->name, "sched_switch")) - process_sched_switch_event(event, cpu, timestamp, thread); + process_sched_switch_event(more_data, event, cpu, timestamp, thread); if (!strcmp(event->name, "sched_wakeup")) - process_sched_wakeup_event(event, cpu, timestamp, thread); + process_sched_wakeup_event(more_data, event, cpu, timestamp, thread); + if (!strcmp(event->name, "sched_wakeup_new")) + process_sched_wakeup_event(more_data, event, cpu, timestamp, thread); + if (!strcmp(event->name, "sched_process_fork")) + process_sched_fork_event(more_data, event, cpu, timestamp, thread); + if (!strcmp(event->name, "sched_process_exit")) + process_sched_exit_event(event, cpu, timestamp, thread); } static int @@ -1053,7 +1170,7 @@ static const struct option options[] = { int cmd_sched(int argc, const char **argv, const char *prefix __used) { - long nr_iterations = LONG_MAX, i; + long nr_iterations = 10, i; symbol__init(); page_size = getpagesize(); @@ -1068,8 +1185,7 @@ int cmd_sched(int argc, const char **argv, const char *prefix __used) usage_with_options(annotate_usage, options); } - - setup_pager(); +// setup_pager(); calibrate_run_measurement_overhead(); calibrate_sleep_measurement_overhead(); |