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perf sched: Import schedbench.c
Import the schedbench.c tool that i wrote some time ago to simulate scheduler behavior but never finished. It's a good basis for perf sched nevertheless. Most of its guts are not hooked up to the perf event loop yet - that will be done in the patches to come. Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar
parent
0a02ad9331
commit
ec156764d4
3 changed files with 827 additions and 33 deletions
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@ -12,22 +12,770 @@
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#include "util/debug.h"
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#include "util/trace-event.h"
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#include <sys/types.h>
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static char const *input_name = "perf.data";
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static int input;
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static unsigned long page_size;
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static unsigned long mmap_window = 32;
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static char const *input_name = "perf.data";
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static int input;
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static unsigned long page_size;
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static unsigned long mmap_window = 32;
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static unsigned long total = 0;
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static unsigned long total_comm = 0;
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static unsigned long total_comm = 0;
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static struct rb_root threads;
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static struct thread *last_match;
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static struct rb_root threads;
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static struct thread *last_match;
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static struct perf_header *header;
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static u64 sample_type;
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static struct perf_header *header;
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static u64 sample_type;
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/*
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* Scheduler benchmarks
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*/
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#include <sys/resource.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/prctl.h>
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#include <linux/unistd.h>
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#include <semaphore.h>
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#include <pthread.h>
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#include <signal.h>
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#include <values.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <assert.h>
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#include <fcntl.h>
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#include <time.h>
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#include <math.h>
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#include <stdio.h>
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#define PR_SET_NAME 15 /* Set process name */
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#define BUG_ON(x) assert(!(x))
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#define DEBUG 1
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typedef unsigned long long nsec_t;
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#define printk(x...) do { printf(x); fflush(stdout); } while (0)
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nsec_t prev_printk;
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#define __dprintk(x,y...) do { \
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nsec_t __now = get_nsecs(), __delta = __now - prev_printk; \
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\
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prev_printk = __now; \
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\
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printf("%.3f [%Ld] [%.3f]: " x, (double)__now/1e6, __now, (double)__delta/1e6, y);\
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} while (0)
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#if !DEBUG
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# define dprintk(x...) do { } while (0)
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#else
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# define dprintk(x...) __dprintk(x)
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#endif
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#define __DP() __dprintk("parent: line %d\n", __LINE__)
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#define DP() dprintk("parent: line %d\n", __LINE__)
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#define D() dprintk("task %ld: line %d\n", this_task->nr, __LINE__)
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static nsec_t run_measurement_overhead;
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static nsec_t sleep_measurement_overhead;
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static nsec_t get_nsecs(void)
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{
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struct timespec ts;
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clock_gettime(CLOCK_MONOTONIC, &ts);
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return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
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}
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static void burn_nsecs(nsec_t nsecs)
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{
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nsec_t T0 = get_nsecs(), T1;
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do {
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T1 = get_nsecs();
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} while (T1 + run_measurement_overhead < T0 + nsecs);
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}
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static void sleep_nsecs(nsec_t nsecs)
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{
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struct timespec ts;
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ts.tv_nsec = nsecs % 999999999;
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ts.tv_sec = nsecs / 999999999;
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nanosleep(&ts, NULL);
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}
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static void calibrate_run_measurement_overhead(void)
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{
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nsec_t T0, T1, delta, min_delta = 1000000000ULL;
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int i;
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for (i = 0; i < 10; i++) {
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T0 = get_nsecs();
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burn_nsecs(0);
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T1 = get_nsecs();
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delta = T1-T0;
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min_delta = min(min_delta, delta);
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}
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run_measurement_overhead = min_delta;
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printk("run measurement overhead: %Ld nsecs\n", min_delta);
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}
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static void calibrate_sleep_measurement_overhead(void)
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{
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nsec_t T0, T1, delta, min_delta = 1000000000ULL;
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int i;
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for (i = 0; i < 10; i++) {
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T0 = get_nsecs();
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sleep_nsecs(10000);
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T1 = get_nsecs();
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delta = T1-T0;
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min_delta = min(min_delta, delta);
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}
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min_delta -= 10000;
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sleep_measurement_overhead = min_delta;
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printk("sleep measurement overhead: %Ld nsecs\n", min_delta);
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}
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#define COMM_LEN 20
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#define SYM_LEN 129
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#define MAX_PID 65536
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static unsigned long nr_tasks;
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struct sched_event;
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struct task_desc {
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unsigned long nr;
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unsigned long pid;
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char comm[COMM_LEN];
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unsigned long nr_events;
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unsigned long curr_event;
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struct sched_event **events;
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pthread_t thread;
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sem_t sleep_sem;
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sem_t ready_for_work;
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sem_t work_done_sem;
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nsec_t cpu_usage;
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};
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enum sched_event_type {
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SCHED_EVENT_RUN,
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SCHED_EVENT_SLEEP,
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SCHED_EVENT_WAKEUP,
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};
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struct sched_event {
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enum sched_event_type type;
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nsec_t timestamp;
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nsec_t duration;
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unsigned long nr;
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int specific_wait;
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sem_t *wait_sem;
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struct task_desc *wakee;
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};
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static struct task_desc *pid_to_task[MAX_PID];
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static struct task_desc **tasks;
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static pthread_mutex_t start_work_mutex = PTHREAD_MUTEX_INITIALIZER;
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static nsec_t start_time;
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static pthread_mutex_t work_done_wait_mutex = PTHREAD_MUTEX_INITIALIZER;
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static unsigned long nr_run_events;
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static unsigned long nr_sleep_events;
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static unsigned long nr_wakeup_events;
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static unsigned long nr_sleep_corrections;
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static unsigned long nr_run_events_optimized;
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static struct sched_event *
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get_new_event(struct task_desc *task, nsec_t timestamp)
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{
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struct sched_event *event = calloc(1, sizeof(*event));
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unsigned long idx = task->nr_events;
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size_t size;
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event->timestamp = timestamp;
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event->nr = idx;
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task->nr_events++;
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size = sizeof(struct sched_event *) * task->nr_events;
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task->events = realloc(task->events, size);
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BUG_ON(!task->events);
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task->events[idx] = event;
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return event;
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}
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static struct sched_event *last_event(struct task_desc *task)
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{
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if (!task->nr_events)
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return NULL;
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return task->events[task->nr_events - 1];
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}
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static void
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add_sched_event_run(struct task_desc *task, nsec_t timestamp,
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unsigned long duration)
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{
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struct sched_event *event, *curr_event = last_event(task);
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/*
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* optimize an existing RUN event by merging this one
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* to it:
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*/
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if (curr_event && curr_event->type == SCHED_EVENT_RUN) {
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nr_run_events_optimized++;
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curr_event->duration += duration;
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return;
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}
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event = get_new_event(task, timestamp);
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event->type = SCHED_EVENT_RUN;
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event->duration = duration;
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nr_run_events++;
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}
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static unsigned long targetless_wakeups;
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static unsigned long multitarget_wakeups;
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static void
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add_sched_event_wakeup(struct task_desc *task, nsec_t timestamp,
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struct task_desc *wakee)
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{
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struct sched_event *event, *wakee_event;
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event = get_new_event(task, timestamp);
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event->type = SCHED_EVENT_WAKEUP;
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event->wakee = wakee;
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wakee_event = last_event(wakee);
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if (!wakee_event || wakee_event->type != SCHED_EVENT_SLEEP) {
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targetless_wakeups++;
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return;
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}
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if (wakee_event->wait_sem) {
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multitarget_wakeups++;
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return;
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}
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wakee_event->wait_sem = calloc(1, sizeof(*wakee_event->wait_sem));
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sem_init(wakee_event->wait_sem, 0, 0);
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wakee_event->specific_wait = 1;
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event->wait_sem = wakee_event->wait_sem;
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nr_wakeup_events++;
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}
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static void
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add_sched_event_sleep(struct task_desc *task, nsec_t timestamp,
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unsigned long uninterruptible __used)
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{
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struct sched_event *event = get_new_event(task, timestamp);
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event->type = SCHED_EVENT_SLEEP;
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nr_sleep_events++;
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}
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static struct task_desc *register_pid(unsigned long pid, const char *comm)
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{
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struct task_desc *task;
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BUG_ON(pid >= MAX_PID);
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task = pid_to_task[pid];
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if (task)
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return task;
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task = calloc(1, sizeof(*task));
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task->pid = pid;
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task->nr = nr_tasks;
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strcpy(task->comm, comm);
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/*
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* every task starts in sleeping state - this gets ignored
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* if there's no wakeup pointing to this sleep state:
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*/
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add_sched_event_sleep(task, 0, 0);
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pid_to_task[pid] = task;
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nr_tasks++;
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tasks = realloc(tasks, nr_tasks*sizeof(struct task_task *));
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BUG_ON(!tasks);
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tasks[task->nr] = task;
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printk("registered task #%ld, PID %ld (%s)\n", nr_tasks, pid, comm);
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return task;
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}
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static int first_trace_line = 1;
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static nsec_t first_timestamp;
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static nsec_t prev_timestamp;
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void parse_line(char *line);
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void parse_line(char *line)
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{
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unsigned long param1 = 0, param2 = 0;
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char comm[COMM_LEN], comm2[COMM_LEN];
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unsigned long pid, pid2, timestamp0;
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struct task_desc *task, *task2;
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char func_str[SYM_LEN];
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nsec_t timestamp;
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int ret;
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//" <idle> 0 0D.s3 0us+: try_to_wake_up <events/0 9> (1 0)"
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ret = sscanf(line, "%20s %5ld %*s %ldus%*c:"
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" %128s <%20s %ld> (%ld %ld)\n",
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comm, &pid, ×tamp0,
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func_str, comm2, &pid2, ¶m1, ¶m2);
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dprintk("ret: %d\n", ret);
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if (ret != 8)
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return;
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timestamp = timestamp0 * 1000LL;
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if (first_trace_line) {
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first_trace_line = 0;
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first_timestamp = timestamp;
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}
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timestamp -= first_timestamp;
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BUG_ON(timestamp < prev_timestamp);
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prev_timestamp = timestamp;
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dprintk("parsed: %s - %ld %Ld: %s - <%s %ld> (%ld %ld)\n",
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comm,
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pid,
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timestamp,
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func_str,
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comm2,
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pid2,
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param1,
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param2);
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task = register_pid(pid, comm);
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task2 = register_pid(pid2, comm2);
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if (!strcmp(func_str, "update_curr")) {
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dprintk("%Ld: task %ld runs for %ld nsecs\n",
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timestamp, task->nr, param1);
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add_sched_event_run(task, timestamp, param1);
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} else if (!strcmp(func_str, "try_to_wake_up")) {
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dprintk("%Ld: task %ld wakes up task %ld\n",
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timestamp, task->nr, task2->nr);
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add_sched_event_wakeup(task, timestamp, task2);
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} else if (!strcmp(func_str, "deactivate_task")) {
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dprintk("%Ld: task %ld goes to sleep (uninterruptible: %ld)\n",
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timestamp, task->nr, param1);
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add_sched_event_sleep(task, timestamp, param1);
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}
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}
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static void print_task_traces(void)
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{
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struct task_desc *task;
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unsigned long i;
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for (i = 0; i < nr_tasks; i++) {
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task = tasks[i];
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printk("task %6ld (%20s:%10ld), nr_events: %ld\n",
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task->nr, task->comm, task->pid, task->nr_events);
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}
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}
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static void add_cross_task_wakeups(void)
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{
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struct task_desc *task1, *task2;
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unsigned long i, j;
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for (i = 0; i < nr_tasks; i++) {
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task1 = tasks[i];
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j = i + 1;
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if (j == nr_tasks)
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j = 0;
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task2 = tasks[j];
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add_sched_event_wakeup(task1, 0, task2);
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}
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}
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static void
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process_sched_event(struct task_desc *this_task, struct sched_event *event)
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{
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int ret = 0;
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nsec_t now;
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long long delta;
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now = get_nsecs();
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delta = start_time + event->timestamp - now;
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dprintk("task %ld, event #%ld, %Ld, delta: %.3f (%Ld)\n",
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this_task->nr, event->nr, event->timestamp,
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(double)delta/1e6, delta);
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if (0 && delta > 0) {
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dprintk("%.3f: task %ld FIX %.3f\n",
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(double)event->timestamp/1e6,
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this_task->nr,
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(double)delta/1e6);
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sleep_nsecs(start_time + event->timestamp - now);
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nr_sleep_corrections++;
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}
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switch (event->type) {
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case SCHED_EVENT_RUN:
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dprintk("%.3f: task %ld RUN for %.3f\n",
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(double)event->timestamp/1e6,
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this_task->nr,
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(double)event->duration/1e6);
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burn_nsecs(event->duration);
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break;
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case SCHED_EVENT_SLEEP:
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dprintk("%.3f: task %ld %s SLEEP\n",
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(double)event->timestamp/1e6,
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this_task->nr, event->wait_sem ? "" : "SKIP");
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if (event->wait_sem)
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ret = sem_wait(event->wait_sem);
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BUG_ON(ret);
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break;
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case SCHED_EVENT_WAKEUP:
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dprintk("%.3f: task %ld WAKEUP => task %ld\n",
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(double)event->timestamp/1e6,
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this_task->nr,
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event->wakee->nr);
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if (event->wait_sem)
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ret = sem_post(event->wait_sem);
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BUG_ON(ret);
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break;
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default:
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BUG_ON(1);
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}
|
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}
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|
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static nsec_t get_cpu_usage_nsec_parent(void)
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{
|
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struct rusage ru;
|
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nsec_t sum;
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int err;
|
||||
|
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err = getrusage(RUSAGE_SELF, &ru);
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BUG_ON(err);
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|
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sum = ru.ru_utime.tv_sec*1e9 + ru.ru_utime.tv_usec*1e3;
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sum += ru.ru_stime.tv_sec*1e9 + ru.ru_stime.tv_usec*1e3;
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return sum;
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}
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|
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static nsec_t get_cpu_usage_nsec_self(void)
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{
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char filename [] = "/proc/1234567890/sched";
|
||||
unsigned long msecs, nsecs;
|
||||
char *line = NULL;
|
||||
nsec_t 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) {
|
||||
dprintk("got line with length %zu :\n", chars);
|
||||
dprintk("%s", line);
|
||||
ret = sscanf(line, "se.sum_exec_runtime : %ld.%06ld\n",
|
||||
&msecs, &nsecs);
|
||||
if (ret == 2) {
|
||||
total = msecs*1e6 + nsecs;
|
||||
dprintk("total: (%ld.%06ld) %Ld\n",
|
||||
msecs, nsecs, total);
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (line)
|
||||
free(line);
|
||||
fclose(file);
|
||||
|
||||
return total;
|
||||
}
|
||||
|
||||
static void *thread_func(void *ctx)
|
||||
{
|
||||
struct task_desc *this_task = ctx;
|
||||
nsec_t cpu_usage_0, cpu_usage_1;
|
||||
unsigned long i, ret;
|
||||
char comm2[22];
|
||||
|
||||
dprintk("task %ld started up.\n", this_task->nr);
|
||||
sprintf(comm2, ":%s", this_task->comm);
|
||||
prctl(PR_SET_NAME, comm2);
|
||||
|
||||
again:
|
||||
ret = sem_post(&this_task->ready_for_work);
|
||||
BUG_ON(ret);
|
||||
D();
|
||||
ret = pthread_mutex_lock(&start_work_mutex);
|
||||
BUG_ON(ret);
|
||||
ret = pthread_mutex_unlock(&start_work_mutex);
|
||||
BUG_ON(ret);
|
||||
D();
|
||||
|
||||
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->events[i]);
|
||||
}
|
||||
|
||||
cpu_usage_1 = get_cpu_usage_nsec_self();
|
||||
this_task->cpu_usage = cpu_usage_1 - cpu_usage_0;
|
||||
|
||||
dprintk("task %ld cpu usage: %0.3f msecs\n",
|
||||
this_task->nr, (double)this_task->cpu_usage / 1e6);
|
||||
|
||||
D();
|
||||
ret = sem_post(&this_task->work_done_sem);
|
||||
BUG_ON(ret);
|
||||
D();
|
||||
|
||||
ret = pthread_mutex_lock(&work_done_wait_mutex);
|
||||
BUG_ON(ret);
|
||||
ret = pthread_mutex_unlock(&work_done_wait_mutex);
|
||||
BUG_ON(ret);
|
||||
D();
|
||||
|
||||
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 nsec_t cpu_usage;
|
||||
static nsec_t runavg_cpu_usage;
|
||||
static nsec_t parent_cpu_usage;
|
||||
static nsec_t runavg_parent_cpu_usage;
|
||||
|
||||
static void wait_for_tasks(void)
|
||||
{
|
||||
nsec_t cpu_usage_0, cpu_usage_1;
|
||||
struct task_desc *task;
|
||||
unsigned long i, ret;
|
||||
|
||||
DP();
|
||||
start_time = get_nsecs();
|
||||
DP();
|
||||
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);
|
||||
|
||||
#if 0
|
||||
for (i = 0; i < nr_tasks; i++) {
|
||||
unsigned long missed;
|
||||
|
||||
task = tasks[i];
|
||||
while (task->curr_event + 1 < task->nr_events) {
|
||||
dprintk("parent waiting for %ld (%ld != %ld)\n",
|
||||
i, task->curr_event, task->nr_events);
|
||||
sleep_nsecs(100000000);
|
||||
}
|
||||
missed = task->nr_events - 1 - task->curr_event;
|
||||
if (missed)
|
||||
printk("task %ld missed events: %ld\n", i, missed);
|
||||
ret = sem_post(&task->sleep_sem);
|
||||
BUG_ON(ret);
|
||||
}
|
||||
#endif
|
||||
DP();
|
||||
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 int __cmd_sched(void);
|
||||
|
||||
static void parse_trace(void)
|
||||
{
|
||||
__cmd_sched();
|
||||
|
||||
printk("nr_run_events: %ld\n", nr_run_events);
|
||||
printk("nr_sleep_events: %ld\n", nr_sleep_events);
|
||||
printk("nr_wakeup_events: %ld\n", nr_wakeup_events);
|
||||
|
||||
if (targetless_wakeups)
|
||||
printk("target-less wakeups: %ld\n", targetless_wakeups);
|
||||
if (multitarget_wakeups)
|
||||
printk("multi-target wakeups: %ld\n", multitarget_wakeups);
|
||||
if (nr_run_events_optimized)
|
||||
printk("run events optimized: %ld\n",
|
||||
nr_run_events_optimized);
|
||||
}
|
||||
|
||||
static unsigned long nr_runs;
|
||||
static nsec_t sum_runtime;
|
||||
static nsec_t sum_fluct;
|
||||
static nsec_t run_avg;
|
||||
|
||||
static void run_one_test(void)
|
||||
{
|
||||
nsec_t 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;
|
||||
|
||||
printk("#%-3ld: %0.3f, ",
|
||||
nr_runs, (double)delta/1000000.0);
|
||||
|
||||
#if 0
|
||||
printk("%0.2f +- %0.2f, ",
|
||||
(double)avg_delta/1e6, (double)std_dev/1e6);
|
||||
#endif
|
||||
printk("ravg: %0.2f, ",
|
||||
(double)run_avg/1e6);
|
||||
|
||||
printk("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:
|
||||
*/
|
||||
printk(" [%0.2f / %0.2f]",
|
||||
(double)parent_cpu_usage/1e6,
|
||||
(double)runavg_parent_cpu_usage/1e6);
|
||||
#endif
|
||||
|
||||
printk("\n");
|
||||
|
||||
if (nr_sleep_corrections)
|
||||
printk(" (%ld sleep corrections)\n", nr_sleep_corrections);
|
||||
nr_sleep_corrections = 0;
|
||||
}
|
||||
|
||||
static void test_calibrations(void)
|
||||
{
|
||||
nsec_t T0, T1;
|
||||
|
||||
T0 = get_nsecs();
|
||||
burn_nsecs(1e6);
|
||||
T1 = get_nsecs();
|
||||
|
||||
printk("the run test took %Ld nsecs\n", T1-T0);
|
||||
|
||||
T0 = get_nsecs();
|
||||
sleep_nsecs(1e6);
|
||||
T1 = get_nsecs();
|
||||
|
||||
printk("the sleep test took %Ld nsecs\n", T1-T0);
|
||||
}
|
||||
|
||||
static int
|
||||
process_comm_event(event_t *event, unsigned long offset, unsigned long head)
|
||||
{
|
||||
|
|
@ -50,6 +798,46 @@ process_comm_event(event_t *event, unsigned long offset, unsigned long head)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static void process_sched_wakeup_event(struct event *event,
|
||||
int cpu __used, u64 timestamp __used, struct thread *thread __used)
|
||||
{
|
||||
printf("sched_wakeup event %p\n", event);
|
||||
}
|
||||
|
||||
static void process_sched_switch_event(struct event *event,
|
||||
int cpu __used, u64 timestamp __used, struct thread *thread __used)
|
||||
{
|
||||
printf("sched_switch event %p\n", event);
|
||||
}
|
||||
|
||||
static void
|
||||
process_raw_event(event_t *raw_event, void *more_data,
|
||||
int cpu, u64 timestamp, struct thread *thread)
|
||||
{
|
||||
struct {
|
||||
u32 size;
|
||||
char data[0];
|
||||
} *raw = more_data;
|
||||
struct event *event;
|
||||
int type;
|
||||
|
||||
type = trace_parse_common_type(raw->data);
|
||||
event = trace_find_event(type);
|
||||
|
||||
/*
|
||||
* FIXME: better resolve from pid from the struct trace_entry
|
||||
* field, although it should be the same than this perf
|
||||
* event pid
|
||||
*/
|
||||
printf("id %d, type: %d, event: %s\n",
|
||||
raw_event->header.type, type, event->name);
|
||||
|
||||
if (!strcmp(event->name, "sched_switch"))
|
||||
process_sched_switch_event(event, cpu, timestamp, thread);
|
||||
if (!strcmp(event->name, "sched_wakeup"))
|
||||
process_sched_wakeup_event(event, cpu, timestamp, thread);
|
||||
}
|
||||
|
||||
static int
|
||||
process_sample_event(event_t *event, unsigned long offset, unsigned long head)
|
||||
{
|
||||
|
|
@ -122,20 +910,8 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
|
|||
dump_printf(" ...... dso: [hypervisor]\n");
|
||||
}
|
||||
|
||||
if (sample_type & PERF_SAMPLE_RAW) {
|
||||
struct {
|
||||
u32 size;
|
||||
char data[0];
|
||||
} *raw = more_data;
|
||||
|
||||
/*
|
||||
* FIXME: better resolve from pid from the struct trace_entry
|
||||
* field, although it should be the same than this perf
|
||||
* event pid
|
||||
*/
|
||||
print_event(cpu, raw->data, raw->size, timestamp, thread->comm);
|
||||
}
|
||||
total += period;
|
||||
if (sample_type & PERF_SAMPLE_RAW)
|
||||
process_raw_event(event, more_data, cpu, timestamp, thread);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -277,6 +1053,8 @@ static const struct option options[] = {
|
|||
|
||||
int cmd_sched(int argc, const char **argv, const char *prefix __used)
|
||||
{
|
||||
long nr_iterations = LONG_MAX, i;
|
||||
|
||||
symbol__init();
|
||||
page_size = getpagesize();
|
||||
|
||||
|
|
@ -293,5 +1071,19 @@ int cmd_sched(int argc, const char **argv, const char *prefix __used)
|
|||
|
||||
setup_pager();
|
||||
|
||||
return __cmd_sched();
|
||||
calibrate_run_measurement_overhead();
|
||||
calibrate_sleep_measurement_overhead();
|
||||
|
||||
test_calibrations();
|
||||
|
||||
parse_trace();
|
||||
print_task_traces();
|
||||
add_cross_task_wakeups();
|
||||
|
||||
create_tasks();
|
||||
printk("------------------------------------------------------------\n");
|
||||
for (i = 0; i < nr_iterations; i++)
|
||||
run_one_test();
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1799,7 +1799,7 @@ 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 +1832,7 @@ 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 +2420,8 @@ 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 +2502,8 @@ 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)
|
||||
|
|
@ -2696,9 +2696,9 @@ 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);
|
||||
event = trace_find_event(type);
|
||||
if (!event)
|
||||
die("ug! no event found for type %d", type);
|
||||
|
||||
|
|
|
|||
|
|
@ -234,6 +234,8 @@ 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);
|
||||
|
||||
void read_tracing_data(struct perf_counter_attr *pattrs, int nb_counters);
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue