diff options
Diffstat (limited to 'ANDROID_3.4.5/tools/perf/builtin-sched.c')
| -rw-r--r-- | ANDROID_3.4.5/tools/perf/builtin-sched.c | 1928 |
1 files changed, 0 insertions, 1928 deletions
diff --git a/ANDROID_3.4.5/tools/perf/builtin-sched.c b/ANDROID_3.4.5/tools/perf/builtin-sched.c deleted file mode 100644 index 1cad3af4..00000000 --- a/ANDROID_3.4.5/tools/perf/builtin-sched.c +++ /dev/null @@ -1,1928 +0,0 @@ -#include "builtin.h" -#include "perf.h" - -#include "util/util.h" -#include "util/evlist.h" -#include "util/cache.h" -#include "util/evsel.h" -#include "util/symbol.h" -#include "util/thread.h" -#include "util/header.h" -#include "util/session.h" -#include "util/tool.h" - -#include "util/parse-options.h" -#include "util/trace-event.h" - -#include "util/debug.h" - -#include <sys/prctl.h> -#include <sys/resource.h> - -#include <semaphore.h> -#include <pthread.h> -#include <math.h> - -static const char *input_name; - -static char default_sort_order[] = "avg, max, switch, runtime"; -static const char *sort_order = default_sort_order; - -static int profile_cpu = -1; - -#define PR_SET_NAME 15 /* Set process name */ -#define MAX_CPUS 4096 - -static u64 run_measurement_overhead; -static u64 sleep_measurement_overhead; - -#define COMM_LEN 20 -#define SYM_LEN 129 - -#define MAX_PID 65536 - -static unsigned long nr_tasks; - -struct sched_atom; - -struct task_desc { - unsigned long nr; - unsigned long pid; - char comm[COMM_LEN]; - - unsigned long nr_events; - unsigned long curr_event; - struct sched_atom **atoms; - - pthread_t thread; - sem_t sleep_sem; - - sem_t ready_for_work; - sem_t work_done_sem; - - u64 cpu_usage; -}; - -enum sched_event_type { - SCHED_EVENT_RUN, - SCHED_EVENT_SLEEP, - SCHED_EVENT_WAKEUP, - SCHED_EVENT_MIGRATION, -}; - -struct sched_atom { - enum sched_event_type type; - int specific_wait; - u64 timestamp; - u64 duration; - unsigned long nr; - sem_t *wait_sem; - struct task_desc *wakee; -}; - -static struct task_desc *pid_to_task[MAX_PID]; - -static struct task_desc **tasks; - -static pthread_mutex_t start_work_mutex = PTHREAD_MUTEX_INITIALIZER; -static u64 start_time; - -static pthread_mutex_t work_done_wait_mutex = PTHREAD_MUTEX_INITIALIZER; - -static unsigned long nr_run_events; -static unsigned long nr_sleep_events; -static unsigned long nr_wakeup_events; - -static unsigned long nr_sleep_corrections; -static unsigned long nr_run_events_optimized; - -static unsigned long targetless_wakeups; -static unsigned long multitarget_wakeups; - -static u64 cpu_usage; -static u64 runavg_cpu_usage; -static u64 parent_cpu_usage; -static u64 runavg_parent_cpu_usage; - -static unsigned long nr_runs; -static u64 sum_runtime; -static u64 sum_fluct; -static u64 run_avg; - -static unsigned int replay_repeat = 10; -static unsigned long nr_timestamps; -static unsigned long nr_unordered_timestamps; -static unsigned long nr_state_machine_bugs; -static unsigned long nr_context_switch_bugs; -static unsigned long nr_events; -static unsigned long nr_lost_chunks; -static unsigned long nr_lost_events; - -#define TASK_STATE_TO_CHAR_STR "RSDTtZX" - -enum thread_state { - THREAD_SLEEPING = 0, - THREAD_WAIT_CPU, - THREAD_SCHED_IN, - THREAD_IGNORE -}; - -struct work_atom { - struct list_head list; - enum thread_state state; - u64 sched_out_time; - u64 wake_up_time; - u64 sched_in_time; - u64 runtime; -}; - -struct work_atoms { - struct list_head work_list; - struct thread *thread; - struct rb_node node; - u64 max_lat; - u64 max_lat_at; - u64 total_lat; - u64 nb_atoms; - u64 total_runtime; -}; - -typedef int (*sort_fn_t)(struct work_atoms *, struct work_atoms *); - -static struct rb_root atom_root, sorted_atom_root; - -static u64 all_runtime; -static u64 all_count; - - -static u64 get_nsecs(void) -{ - struct timespec ts; - - clock_gettime(CLOCK_MONOTONIC, &ts); - - return ts.tv_sec * 1000000000ULL + ts.tv_nsec; -} - -static void burn_nsecs(u64 nsecs) -{ - u64 T0 = get_nsecs(), T1; - - do { - T1 = get_nsecs(); - } while (T1 + run_measurement_overhead < T0 + nsecs); -} - -static void sleep_nsecs(u64 nsecs) -{ - struct timespec ts; - - ts.tv_nsec = nsecs % 999999999; - ts.tv_sec = nsecs / 999999999; - - nanosleep(&ts, NULL); -} - -static void calibrate_run_measurement_overhead(void) -{ - u64 T0, T1, delta, min_delta = 1000000000ULL; - int i; - - for (i = 0; i < 10; i++) { - T0 = get_nsecs(); - burn_nsecs(0); - T1 = get_nsecs(); - delta = T1-T0; - min_delta = min(min_delta, delta); - } - run_measurement_overhead = min_delta; - - printf("run measurement overhead: %" PRIu64 " nsecs\n", min_delta); -} - -static void calibrate_sleep_measurement_overhead(void) -{ - u64 T0, T1, delta, min_delta = 1000000000ULL; - int i; - - for (i = 0; i < 10; i++) { - T0 = get_nsecs(); - sleep_nsecs(10000); - T1 = get_nsecs(); - delta = T1-T0; - min_delta = min(min_delta, delta); - } - min_delta -= 10000; - sleep_measurement_overhead = min_delta; - - printf("sleep measurement overhead: %" PRIu64 " nsecs\n", min_delta); -} - -static struct sched_atom * -get_new_event(struct task_desc *task, u64 timestamp) -{ - struct sched_atom *event = zalloc(sizeof(*event)); - unsigned long idx = task->nr_events; - size_t size; - - event->timestamp = timestamp; - event->nr = idx; - - task->nr_events++; - size = sizeof(struct sched_atom *) * task->nr_events; - task->atoms = realloc(task->atoms, size); - BUG_ON(!task->atoms); - - task->atoms[idx] = event; - - return event; -} - -static struct sched_atom *last_event(struct task_desc *task) -{ - if (!task->nr_events) - return NULL; - - return task->atoms[task->nr_events - 1]; -} - -static void -add_sched_event_run(struct task_desc *task, u64 timestamp, u64 duration) -{ - struct sched_atom *event, *curr_event = last_event(task); - - /* - * optimize an existing RUN event by merging this one - * to it: - */ - if (curr_event && curr_event->type == SCHED_EVENT_RUN) { - nr_run_events_optimized++; - curr_event->duration += duration; - return; - } - - event = get_new_event(task, timestamp); - - event->type = SCHED_EVENT_RUN; - event->duration = duration; - - nr_run_events++; -} - -static void -add_sched_event_wakeup(struct task_desc *task, u64 timestamp, - struct task_desc *wakee) -{ - struct sched_atom *event, *wakee_event; - - event = get_new_event(task, timestamp); - event->type = SCHED_EVENT_WAKEUP; - event->wakee = wakee; - - wakee_event = last_event(wakee); - if (!wakee_event || wakee_event->type != SCHED_EVENT_SLEEP) { - targetless_wakeups++; - return; - } - if (wakee_event->wait_sem) { - multitarget_wakeups++; - return; - } - - wakee_event->wait_sem = zalloc(sizeof(*wakee_event->wait_sem)); - sem_init(wakee_event->wait_sem, 0, 0); - wakee_event->specific_wait = 1; - event->wait_sem = wakee_event->wait_sem; - - nr_wakeup_events++; -} - -static void -add_sched_event_sleep(struct task_desc *task, u64 timestamp, - u64 task_state __used) -{ - struct sched_atom *event = get_new_event(task, timestamp); - - event->type = SCHED_EVENT_SLEEP; - - nr_sleep_events++; -} - -static struct task_desc *register_pid(unsigned long pid, const char *comm) -{ - struct task_desc *task; - - BUG_ON(pid >= MAX_PID); - - task = pid_to_task[pid]; - - if (task) - return task; - - task = zalloc(sizeof(*task)); - task->pid = pid; - task->nr = nr_tasks; - strcpy(task->comm, comm); - /* - * every task starts in sleeping state - this gets ignored - * if there's no wakeup pointing to this sleep state: - */ - add_sched_event_sleep(task, 0, 0); - - pid_to_task[pid] = task; - nr_tasks++; - tasks = realloc(tasks, nr_tasks*sizeof(struct task_task *)); - BUG_ON(!tasks); - tasks[task->nr] = task; - - if (verbose) - printf("registered task #%ld, PID %ld (%s)\n", nr_tasks, pid, comm); - - return task; -} - - -static void print_task_traces(void) -{ - struct task_desc *task; - unsigned long i; - - for (i = 0; i < nr_tasks; i++) { - task = tasks[i]; - printf("task %6ld (%20s:%10ld), nr_events: %ld\n", - task->nr, task->comm, task->pid, task->nr_events); - } -} - -static void add_cross_task_wakeups(void) -{ - struct task_desc *task1, *task2; - unsigned long i, j; - - for (i = 0; i < nr_tasks; i++) { - task1 = tasks[i]; - j = i + 1; - if (j == nr_tasks) - j = 0; - task2 = tasks[j]; - add_sched_event_wakeup(task1, 0, task2); - } -} - -static void -process_sched_event(struct task_desc *this_task __used, struct sched_atom *atom) -{ - int ret = 0; - - switch (atom->type) { - case SCHED_EVENT_RUN: - burn_nsecs(atom->duration); - break; - case SCHED_EVENT_SLEEP: - if (atom->wait_sem) - ret = sem_wait(atom->wait_sem); - BUG_ON(ret); - break; - case SCHED_EVENT_WAKEUP: - if (atom->wait_sem) - ret = sem_post(atom->wait_sem); - BUG_ON(ret); - break; - case SCHED_EVENT_MIGRATION: - break; - default: - BUG_ON(1); - } -} - -static u64 get_cpu_usage_nsec_parent(void) -{ - struct rusage ru; - u64 sum; - int err; - - err = getrusage(RUSAGE_SELF, &ru); - BUG_ON(err); - - sum = ru.ru_utime.tv_sec*1e9 + ru.ru_utime.tv_usec*1e3; - sum += ru.ru_stime.tv_sec*1e9 + ru.ru_stime.tv_usec*1e3; - - return sum; -} - -static int self_open_counters(void) -{ - struct perf_event_attr attr; - int fd; - - memset(&attr, 0, sizeof(attr)); - - attr.type = PERF_TYPE_SOFTWARE; - attr.config = PERF_COUNT_SW_TASK_CLOCK; - - fd = sys_perf_event_open(&attr, 0, -1, -1, 0); - - if (fd < 0) - die("Error: sys_perf_event_open() syscall returned" - "with %d (%s)\n", fd, strerror(errno)); - return fd; -} - -static u64 get_cpu_usage_nsec_self(int fd) -{ - u64 runtime; - int ret; - - ret = read(fd, &runtime, sizeof(runtime)); - BUG_ON(ret != sizeof(runtime)); - - return runtime; -} - -static void *thread_func(void *ctx) -{ - struct task_desc *this_task = ctx; - u64 cpu_usage_0, cpu_usage_1; - unsigned long i, ret; - char comm2[22]; - int fd; - - sprintf(comm2, ":%s", this_task->comm); - prctl(PR_SET_NAME, comm2); - fd = self_open_counters(); - -again: - ret = sem_post(&this_task->ready_for_work); - BUG_ON(ret); - ret = pthread_mutex_lock(&start_work_mutex); - BUG_ON(ret); - ret = pthread_mutex_unlock(&start_work_mutex); - BUG_ON(ret); - - cpu_usage_0 = get_cpu_usage_nsec_self(fd); - - for (i = 0; i < this_task->nr_events; i++) { - this_task->curr_event = i; - process_sched_event(this_task, this_task->atoms[i]); - } - - cpu_usage_1 = get_cpu_usage_nsec_self(fd); - this_task->cpu_usage = cpu_usage_1 - cpu_usage_0; - ret = sem_post(&this_task->work_done_sem); - BUG_ON(ret); - - ret = pthread_mutex_lock(&work_done_wait_mutex); - BUG_ON(ret); - ret = pthread_mutex_unlock(&work_done_wait_mutex); - BUG_ON(ret); - - goto again; -} - -static void create_tasks(void) -{ - struct task_desc *task; - pthread_attr_t attr; - unsigned long i; - int err; - - err = pthread_attr_init(&attr); - BUG_ON(err); - err = pthread_attr_setstacksize(&attr, - (size_t) max(16 * 1024, PTHREAD_STACK_MIN)); - BUG_ON(err); - err = pthread_mutex_lock(&start_work_mutex); - BUG_ON(err); - err = pthread_mutex_lock(&work_done_wait_mutex); - BUG_ON(err); - for (i = 0; i < nr_tasks; i++) { - task = tasks[i]; - sem_init(&task->sleep_sem, 0, 0); - sem_init(&task->ready_for_work, 0, 0); - sem_init(&task->work_done_sem, 0, 0); - task->curr_event = 0; - err = pthread_create(&task->thread, &attr, thread_func, task); - BUG_ON(err); - } -} - -static void wait_for_tasks(void) -{ - u64 cpu_usage_0, cpu_usage_1; - struct task_desc *task; - unsigned long i, ret; - - start_time = get_nsecs(); - cpu_usage = 0; - pthread_mutex_unlock(&work_done_wait_mutex); - - for (i = 0; i < nr_tasks; i++) { - task = tasks[i]; - ret = sem_wait(&task->ready_for_work); - BUG_ON(ret); - sem_init(&task->ready_for_work, 0, 0); - } - ret = pthread_mutex_lock(&work_done_wait_mutex); - BUG_ON(ret); - - cpu_usage_0 = get_cpu_usage_nsec_parent(); - - pthread_mutex_unlock(&start_work_mutex); - - for (i = 0; i < nr_tasks; i++) { - task = tasks[i]; - ret = sem_wait(&task->work_done_sem); - BUG_ON(ret); - sem_init(&task->work_done_sem, 0, 0); - cpu_usage += task->cpu_usage; - task->cpu_usage = 0; - } - - cpu_usage_1 = get_cpu_usage_nsec_parent(); - if (!runavg_cpu_usage) - runavg_cpu_usage = cpu_usage; - runavg_cpu_usage = (runavg_cpu_usage*9 + cpu_usage)/10; - - parent_cpu_usage = cpu_usage_1 - cpu_usage_0; - if (!runavg_parent_cpu_usage) - runavg_parent_cpu_usage = parent_cpu_usage; - runavg_parent_cpu_usage = (runavg_parent_cpu_usage*9 + - parent_cpu_usage)/10; - - ret = pthread_mutex_lock(&start_work_mutex); - BUG_ON(ret); - - for (i = 0; i < nr_tasks; i++) { - task = tasks[i]; - sem_init(&task->sleep_sem, 0, 0); - task->curr_event = 0; - } -} - -static void run_one_test(void) -{ - u64 T0, T1, delta, avg_delta, fluct; - - 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; - if (!run_avg) - run_avg = delta; - run_avg = (run_avg*9 + delta)/10; - - printf("#%-3ld: %0.3f, ", - nr_runs, (double)delta/1000000.0); - - printf("ravg: %0.2f, ", - (double)run_avg/1e6); - - printf("cpu: %0.2f / %0.2f", - (double)cpu_usage/1e6, (double)runavg_cpu_usage/1e6); - -#if 0 - /* - * rusage statistics done by the parent, these are less - * accurate than the sum_exec_runtime based statistics: - */ - printf(" [%0.2f / %0.2f]", - (double)parent_cpu_usage/1e6, - (double)runavg_parent_cpu_usage/1e6); -#endif - - printf("\n"); - - if (nr_sleep_corrections) - printf(" (%ld sleep corrections)\n", nr_sleep_corrections); - nr_sleep_corrections = 0; -} - -static void test_calibrations(void) -{ - u64 T0, T1; - - T0 = get_nsecs(); - burn_nsecs(1e6); - T1 = get_nsecs(); - - printf("the run test took %" PRIu64 " nsecs\n", T1 - T0); - - T0 = get_nsecs(); - sleep_nsecs(1e6); - T1 = get_nsecs(); - - printf("the sleep test took %" PRIu64 " nsecs\n", T1 - T0); -} - -#define FILL_FIELD(ptr, field, event, data) \ - ptr.field = (typeof(ptr.field)) raw_field_value(event, #field, data) - -#define FILL_ARRAY(ptr, array, event, data) \ -do { \ - void *__array = raw_field_ptr(event, #array, data); \ - memcpy(ptr.array, __array, sizeof(ptr.array)); \ -} while(0) - -#define FILL_COMMON_FIELDS(ptr, event, data) \ -do { \ - FILL_FIELD(ptr, common_type, event, data); \ - FILL_FIELD(ptr, common_flags, event, data); \ - FILL_FIELD(ptr, common_preempt_count, event, data); \ - FILL_FIELD(ptr, common_pid, event, data); \ - FILL_FIELD(ptr, common_tgid, event, data); \ -} while (0) - - - -struct trace_switch_event { - u32 size; - - u16 common_type; - u8 common_flags; - u8 common_preempt_count; - u32 common_pid; - u32 common_tgid; - - char prev_comm[16]; - u32 prev_pid; - u32 prev_prio; - u64 prev_state; - char next_comm[16]; - u32 next_pid; - u32 next_prio; -}; - -struct trace_runtime_event { - u32 size; - - u16 common_type; - u8 common_flags; - u8 common_preempt_count; - u32 common_pid; - u32 common_tgid; - - char comm[16]; - u32 pid; - u64 runtime; - u64 vruntime; -}; - -struct trace_wakeup_event { - u32 size; - - u16 common_type; - u8 common_flags; - u8 common_preempt_count; - u32 common_pid; - u32 common_tgid; - - char comm[16]; - u32 pid; - - u32 prio; - u32 success; - u32 cpu; -}; - -struct trace_fork_event { - u32 size; - - u16 common_type; - u8 common_flags; - u8 common_preempt_count; - u32 common_pid; - u32 common_tgid; - - char parent_comm[16]; - u32 parent_pid; - char child_comm[16]; - u32 child_pid; -}; - -struct trace_migrate_task_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 cpu; -}; - -struct trace_sched_handler { - void (*switch_event)(struct trace_switch_event *, - struct machine *, - struct event *, - int cpu, - u64 timestamp, - struct thread *thread); - - void (*runtime_event)(struct trace_runtime_event *, - struct machine *, - struct event *, - int cpu, - u64 timestamp, - struct thread *thread); - - void (*wakeup_event)(struct trace_wakeup_event *, - struct machine *, - struct event *, - int cpu, - u64 timestamp, - struct thread *thread); - - void (*fork_event)(struct trace_fork_event *, - struct event *, - int cpu, - u64 timestamp, - struct thread *thread); - - void (*migrate_task_event)(struct trace_migrate_task_event *, - struct machine *machine, - struct event *, - int cpu, - u64 timestamp, - struct thread *thread); -}; - - -static void -replay_wakeup_event(struct trace_wakeup_event *wakeup_event, - struct machine *machine __used, - struct event *event, - int cpu __used, - u64 timestamp __used, - struct thread *thread __used) -{ - struct task_desc *waker, *wakee; - - if (verbose) { - printf("sched_wakeup event %p\n", event); - - printf(" ... pid %d woke up %s/%d\n", - wakeup_event->common_pid, - wakeup_event->comm, - wakeup_event->pid); - } - - waker = register_pid(wakeup_event->common_pid, "<unknown>"); - wakee = register_pid(wakeup_event->pid, wakeup_event->comm); - - add_sched_event_wakeup(waker, timestamp, wakee); -} - -static u64 cpu_last_switched[MAX_CPUS]; - -static void -replay_switch_event(struct trace_switch_event *switch_event, - struct machine *machine __used, - struct event *event, - int cpu, - u64 timestamp, - struct thread *thread __used) -{ - struct task_desc *prev, __used *next; - u64 timestamp0; - s64 delta; - - if (verbose) - printf("sched_switch event %p\n", event); - - if (cpu >= MAX_CPUS || cpu < 0) - return; - - timestamp0 = cpu_last_switched[cpu]; - if (timestamp0) - delta = timestamp - timestamp0; - else - delta = 0; - - if (delta < 0) - die("hm, delta: %" PRIu64 " < 0 ?\n", delta); - - if (verbose) { - printf(" ... switch from %s/%d to %s/%d [ran %" PRIu64 " nsecs]\n", - switch_event->prev_comm, switch_event->prev_pid, - switch_event->next_comm, switch_event->next_pid, - delta); - } - - prev = register_pid(switch_event->prev_pid, switch_event->prev_comm); - next = register_pid(switch_event->next_pid, switch_event->next_comm); - - cpu_last_switched[cpu] = timestamp; - - add_sched_event_run(prev, timestamp, delta); - add_sched_event_sleep(prev, timestamp, switch_event->prev_state); -} - - -static void -replay_fork_event(struct trace_fork_event *fork_event, - struct event *event, - int cpu __used, - u64 timestamp __used, - struct thread *thread __used) -{ - if (verbose) { - printf("sched_fork event %p\n", event); - printf("... parent: %s/%d\n", fork_event->parent_comm, fork_event->parent_pid); - printf("... child: %s/%d\n", fork_event->child_comm, fork_event->child_pid); - } - register_pid(fork_event->parent_pid, fork_event->parent_comm); - register_pid(fork_event->child_pid, fork_event->child_comm); -} - -static struct trace_sched_handler replay_ops = { - .wakeup_event = replay_wakeup_event, - .switch_event = replay_switch_event, - .fork_event = replay_fork_event, -}; - -struct sort_dimension { - const char *name; - sort_fn_t cmp; - struct list_head list; -}; - -static LIST_HEAD(cmp_pid); - -static int -thread_lat_cmp(struct list_head *list, struct work_atoms *l, struct work_atoms *r) -{ - struct sort_dimension *sort; - int ret = 0; - - BUG_ON(list_empty(list)); - - list_for_each_entry(sort, list, list) { - ret = sort->cmp(l, r); - if (ret) - return ret; - } - - return ret; -} - -static struct work_atoms * -thread_atoms_search(struct rb_root *root, struct thread *thread, - struct list_head *sort_list) -{ - struct rb_node *node = root->rb_node; - struct work_atoms key = { .thread = thread }; - - while (node) { - struct work_atoms *atoms; - int cmp; - - atoms = container_of(node, struct work_atoms, node); - - cmp = thread_lat_cmp(sort_list, &key, atoms); - if (cmp > 0) - node = node->rb_left; - else if (cmp < 0) - node = node->rb_right; - else { - BUG_ON(thread != atoms->thread); - return atoms; - } - } - return NULL; -} - -static void -__thread_latency_insert(struct rb_root *root, struct work_atoms *data, - struct list_head *sort_list) -{ - struct rb_node **new = &(root->rb_node), *parent = NULL; - - while (*new) { - struct work_atoms *this; - int cmp; - - this = container_of(*new, struct work_atoms, node); - parent = *new; - - cmp = thread_lat_cmp(sort_list, data, this); - - if (cmp > 0) - new = &((*new)->rb_left); - else - new = &((*new)->rb_right); - } - - rb_link_node(&data->node, parent, new); - rb_insert_color(&data->node, root); -} - -static void thread_atoms_insert(struct thread *thread) -{ - struct work_atoms *atoms = zalloc(sizeof(*atoms)); - if (!atoms) - die("No memory"); - - atoms->thread = thread; - INIT_LIST_HEAD(&atoms->work_list); - __thread_latency_insert(&atom_root, atoms, &cmp_pid); -} - -static void -latency_fork_event(struct trace_fork_event *fork_event __used, - struct event *event __used, - int cpu __used, - u64 timestamp __used, - struct thread *thread __used) -{ - /* should insert the newcomer */ -} - -__used -static char sched_out_state(struct trace_switch_event *switch_event) -{ - const char *str = TASK_STATE_TO_CHAR_STR; - - return str[switch_event->prev_state]; -} - -static void -add_sched_out_event(struct work_atoms *atoms, - char run_state, - u64 timestamp) -{ - struct work_atom *atom = zalloc(sizeof(*atom)); - if (!atom) - die("Non memory"); - - atom->sched_out_time = timestamp; - - if (run_state == 'R') { - atom->state = THREAD_WAIT_CPU; - atom->wake_up_time = atom->sched_out_time; - } - - list_add_tail(&atom->list, &atoms->work_list); -} - -static void -add_runtime_event(struct work_atoms *atoms, u64 delta, u64 timestamp __used) -{ - struct work_atom *atom; - - BUG_ON(list_empty(&atoms->work_list)); - - atom = list_entry(atoms->work_list.prev, struct work_atom, list); - - atom->runtime += delta; - atoms->total_runtime += delta; -} - -static void -add_sched_in_event(struct work_atoms *atoms, u64 timestamp) -{ - struct work_atom *atom; - u64 delta; - - if (list_empty(&atoms->work_list)) - return; - - atom = list_entry(atoms->work_list.prev, struct work_atom, list); - - if (atom->state != THREAD_WAIT_CPU) - return; - - if (timestamp < atom->wake_up_time) { - atom->state = THREAD_IGNORE; - return; - } - - atom->state = THREAD_SCHED_IN; - atom->sched_in_time = timestamp; - - delta = atom->sched_in_time - atom->wake_up_time; - atoms->total_lat += delta; - if (delta > atoms->max_lat) { - atoms->max_lat = delta; - atoms->max_lat_at = timestamp; - } - atoms->nb_atoms++; -} - -static void -latency_switch_event(struct trace_switch_event *switch_event, - struct machine *machine, - struct event *event __used, - int cpu, - u64 timestamp, - struct thread *thread __used) -{ - struct work_atoms *out_events, *in_events; - struct thread *sched_out, *sched_in; - u64 timestamp0; - s64 delta; - - BUG_ON(cpu >= MAX_CPUS || cpu < 0); - - timestamp0 = cpu_last_switched[cpu]; - cpu_last_switched[cpu] = timestamp; - if (timestamp0) - delta = timestamp - timestamp0; - else - delta = 0; - - if (delta < 0) - die("hm, delta: %" PRIu64 " < 0 ?\n", delta); - - - sched_out = machine__findnew_thread(machine, switch_event->prev_pid); - sched_in = machine__findnew_thread(machine, switch_event->next_pid); - - out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid); - if (!out_events) { - thread_atoms_insert(sched_out); - out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid); - if (!out_events) - die("out-event: Internal tree error"); - } - add_sched_out_event(out_events, sched_out_state(switch_event), timestamp); - - in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid); - if (!in_events) { - thread_atoms_insert(sched_in); - in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid); - if (!in_events) - die("in-event: Internal tree error"); - /* - * Take came in we have not heard about yet, - * add in an initial atom in runnable state: - */ - add_sched_out_event(in_events, 'R', timestamp); - } - add_sched_in_event(in_events, timestamp); -} - -static void -latency_runtime_event(struct trace_runtime_event *runtime_event, - struct machine *machine, - struct event *event __used, - int cpu, - u64 timestamp, - struct thread *this_thread __used) -{ - struct thread *thread = machine__findnew_thread(machine, runtime_event->pid); - struct work_atoms *atoms = thread_atoms_search(&atom_root, thread, &cmp_pid); - - BUG_ON(cpu >= MAX_CPUS || cpu < 0); - if (!atoms) { - thread_atoms_insert(thread); - atoms = thread_atoms_search(&atom_root, thread, &cmp_pid); - if (!atoms) - die("in-event: Internal tree error"); - add_sched_out_event(atoms, 'R', timestamp); - } - - add_runtime_event(atoms, runtime_event->runtime, timestamp); -} - -static void -latency_wakeup_event(struct trace_wakeup_event *wakeup_event, - struct machine *machine, - struct event *__event __used, - int cpu __used, - u64 timestamp, - struct thread *thread __used) -{ - struct work_atoms *atoms; - struct work_atom *atom; - struct thread *wakee; - - /* Note for later, it may be interesting to observe the failing cases */ - if (!wakeup_event->success) - return; - - wakee = machine__findnew_thread(machine, wakeup_event->pid); - atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid); - if (!atoms) { - thread_atoms_insert(wakee); - atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid); - if (!atoms) - die("wakeup-event: Internal tree error"); - add_sched_out_event(atoms, 'S', timestamp); - } - - BUG_ON(list_empty(&atoms->work_list)); - - atom = list_entry(atoms->work_list.prev, struct work_atom, list); - - /* - * You WILL be missing events if you've recorded only - * one CPU, or are only looking at only one, so don't - * make useless noise. - */ - if (profile_cpu == -1 && atom->state != THREAD_SLEEPING) - nr_state_machine_bugs++; - - nr_timestamps++; - if (atom->sched_out_time > timestamp) { - nr_unordered_timestamps++; - return; - } - - atom->state = THREAD_WAIT_CPU; - atom->wake_up_time = timestamp; -} - -static void -latency_migrate_task_event(struct trace_migrate_task_event *migrate_task_event, - struct machine *machine, - struct event *__event __used, - int cpu __used, - u64 timestamp, - struct thread *thread __used) -{ - struct work_atoms *atoms; - struct work_atom *atom; - struct thread *migrant; - - /* - * Only need to worry about migration when profiling one CPU. - */ - if (profile_cpu == -1) - return; - - migrant = machine__findnew_thread(machine, migrate_task_event->pid); - atoms = thread_atoms_search(&atom_root, migrant, &cmp_pid); - if (!atoms) { - thread_atoms_insert(migrant); - register_pid(migrant->pid, migrant->comm); - atoms = thread_atoms_search(&atom_root, migrant, &cmp_pid); - if (!atoms) - die("migration-event: Internal tree error"); - add_sched_out_event(atoms, 'R', timestamp); - } - - BUG_ON(list_empty(&atoms->work_list)); - - atom = list_entry(atoms->work_list.prev, struct work_atom, list); - atom->sched_in_time = atom->sched_out_time = atom->wake_up_time = timestamp; - - nr_timestamps++; - - if (atom->sched_out_time > timestamp) - nr_unordered_timestamps++; -} - -static struct trace_sched_handler lat_ops = { - .wakeup_event = latency_wakeup_event, - .switch_event = latency_switch_event, - .runtime_event = latency_runtime_event, - .fork_event = latency_fork_event, - .migrate_task_event = latency_migrate_task_event, -}; - -static void output_lat_thread(struct work_atoms *work_list) -{ - int i; - int ret; - u64 avg; - - if (!work_list->nb_atoms) - return; - /* - * Ignore idle threads: - */ - if (!strcmp(work_list->thread->comm, "swapper")) - return; - - all_runtime += work_list->total_runtime; - all_count += work_list->nb_atoms; - - ret = printf(" %s:%d ", work_list->thread->comm, work_list->thread->pid); - - for (i = 0; i < 24 - ret; i++) - printf(" "); - - avg = work_list->total_lat / work_list->nb_atoms; - - printf("|%11.3f ms |%9" PRIu64 " | avg:%9.3f ms | max:%9.3f ms | max at: %9.6f s\n", - (double)work_list->total_runtime / 1e6, - work_list->nb_atoms, (double)avg / 1e6, - (double)work_list->max_lat / 1e6, - (double)work_list->max_lat_at / 1e9); -} - -static int pid_cmp(struct work_atoms *l, struct work_atoms *r) -{ - if (l->thread->pid < r->thread->pid) - return -1; - if (l->thread->pid > r->thread->pid) - return 1; - - return 0; -} - -static struct sort_dimension pid_sort_dimension = { - .name = "pid", - .cmp = pid_cmp, -}; - -static int avg_cmp(struct work_atoms *l, struct work_atoms *r) -{ - u64 avgl, avgr; - - if (!l->nb_atoms) - return -1; - - if (!r->nb_atoms) - return 1; - - avgl = l->total_lat / l->nb_atoms; - avgr = r->total_lat / r->nb_atoms; - - if (avgl < avgr) - return -1; - if (avgl > avgr) - return 1; - - return 0; -} - -static struct sort_dimension avg_sort_dimension = { - .name = "avg", - .cmp = avg_cmp, -}; - -static int max_cmp(struct work_atoms *l, struct work_atoms *r) -{ - if (l->max_lat < r->max_lat) - return -1; - if (l->max_lat > r->max_lat) - return 1; - - return 0; -} - -static struct sort_dimension max_sort_dimension = { - .name = "max", - .cmp = max_cmp, -}; - -static int switch_cmp(struct work_atoms *l, struct work_atoms *r) -{ - if (l->nb_atoms < r->nb_atoms) - return -1; - if (l->nb_atoms > r->nb_atoms) - return 1; - - return 0; -} - -static struct sort_dimension switch_sort_dimension = { - .name = "switch", - .cmp = switch_cmp, -}; - -static int runtime_cmp(struct work_atoms *l, struct work_atoms *r) -{ - if (l->total_runtime < r->total_runtime) - return -1; - if (l->total_runtime > r->total_runtime) - return 1; - - return 0; -} - -static struct sort_dimension runtime_sort_dimension = { - .name = "runtime", - .cmp = runtime_cmp, -}; - -static struct sort_dimension *available_sorts[] = { - &pid_sort_dimension, - &avg_sort_dimension, - &max_sort_dimension, - &switch_sort_dimension, - &runtime_sort_dimension, -}; - -#define NB_AVAILABLE_SORTS (int)(sizeof(available_sorts) / sizeof(struct sort_dimension *)) - -static LIST_HEAD(sort_list); - -static int sort_dimension__add(const char *tok, struct list_head *list) -{ - int i; - - for (i = 0; i < NB_AVAILABLE_SORTS; i++) { - if (!strcmp(available_sorts[i]->name, tok)) { - list_add_tail(&available_sorts[i]->list, list); - - return 0; - } - } - - return -1; -} - -static void setup_sorting(void); - -static void sort_lat(void) -{ - struct rb_node *node; - - for (;;) { - struct work_atoms *data; - node = rb_first(&atom_root); - if (!node) - break; - - rb_erase(node, &atom_root); - data = rb_entry(node, struct work_atoms, node); - __thread_latency_insert(&sorted_atom_root, data, &sort_list); - } -} - -static struct trace_sched_handler *trace_handler; - -static void -process_sched_wakeup_event(struct perf_tool *tool __used, - struct event *event, - struct perf_sample *sample, - struct machine *machine, - struct thread *thread) -{ - void *data = sample->raw_data; - struct trace_wakeup_event wakeup_event; - - FILL_COMMON_FIELDS(wakeup_event, event, data); - - FILL_ARRAY(wakeup_event, comm, event, data); - FILL_FIELD(wakeup_event, pid, event, data); - FILL_FIELD(wakeup_event, prio, event, data); - FILL_FIELD(wakeup_event, success, event, data); - FILL_FIELD(wakeup_event, cpu, event, data); - - if (trace_handler->wakeup_event) - trace_handler->wakeup_event(&wakeup_event, machine, event, - sample->cpu, sample->time, thread); -} - -/* - * Track the current task - that way we can know whether there's any - * weird events, such as a task being switched away that is not current. - */ -static int max_cpu; - -static u32 curr_pid[MAX_CPUS] = { [0 ... MAX_CPUS-1] = -1 }; - -static struct thread *curr_thread[MAX_CPUS]; - -static char next_shortname1 = 'A'; -static char next_shortname2 = '0'; - -static void -map_switch_event(struct trace_switch_event *switch_event, - struct machine *machine, - struct event *event __used, - int this_cpu, - u64 timestamp, - struct thread *thread __used) -{ - struct thread *sched_out __used, *sched_in; - int new_shortname; - u64 timestamp0; - s64 delta; - int cpu; - - BUG_ON(this_cpu >= MAX_CPUS || this_cpu < 0); - - if (this_cpu > max_cpu) - max_cpu = this_cpu; - - timestamp0 = cpu_last_switched[this_cpu]; - cpu_last_switched[this_cpu] = timestamp; - if (timestamp0) - delta = timestamp - timestamp0; - else - delta = 0; - - if (delta < 0) - die("hm, delta: %" PRIu64 " < 0 ?\n", delta); - - - sched_out = machine__findnew_thread(machine, switch_event->prev_pid); - sched_in = machine__findnew_thread(machine, switch_event->next_pid); - - curr_thread[this_cpu] = sched_in; - - printf(" "); - - new_shortname = 0; - if (!sched_in->shortname[0]) { - sched_in->shortname[0] = next_shortname1; - sched_in->shortname[1] = next_shortname2; - - if (next_shortname1 < 'Z') { - next_shortname1++; - } else { - next_shortname1='A'; - if (next_shortname2 < '9') { - next_shortname2++; - } else { - next_shortname2='0'; - } - } - new_shortname = 1; - } - - for (cpu = 0; cpu <= max_cpu; cpu++) { - if (cpu != this_cpu) - printf(" "); - else - printf("*"); - - if (curr_thread[cpu]) { - if (curr_thread[cpu]->pid) - printf("%2s ", curr_thread[cpu]->shortname); - else - printf(". "); - } else - printf(" "); - } - - printf(" %12.6f secs ", (double)timestamp/1e9); - if (new_shortname) { - printf("%s => %s:%d\n", - sched_in->shortname, sched_in->comm, sched_in->pid); - } else { - printf("\n"); - } -} - -static void -process_sched_switch_event(struct perf_tool *tool __used, - struct event *event, - struct perf_sample *sample, - struct machine *machine, - struct thread *thread) -{ - int this_cpu = sample->cpu; - void *data = sample->raw_data; - struct trace_switch_event switch_event; - - FILL_COMMON_FIELDS(switch_event, event, data); - - FILL_ARRAY(switch_event, prev_comm, event, data); - FILL_FIELD(switch_event, prev_pid, event, data); - FILL_FIELD(switch_event, prev_prio, event, data); - FILL_FIELD(switch_event, prev_state, event, data); - FILL_ARRAY(switch_event, next_comm, event, data); - FILL_FIELD(switch_event, next_pid, event, data); - FILL_FIELD(switch_event, next_prio, event, data); - - if (curr_pid[this_cpu] != (u32)-1) { - /* - * Are we trying to switch away a PID that is - * not current? - */ - if (curr_pid[this_cpu] != switch_event.prev_pid) - nr_context_switch_bugs++; - } - if (trace_handler->switch_event) - trace_handler->switch_event(&switch_event, machine, event, - this_cpu, sample->time, thread); - - curr_pid[this_cpu] = switch_event.next_pid; -} - -static void -process_sched_runtime_event(struct perf_tool *tool __used, - struct event *event, - struct perf_sample *sample, - struct machine *machine, - struct thread *thread) -{ - void *data = sample->raw_data; - struct trace_runtime_event runtime_event; - - FILL_ARRAY(runtime_event, comm, event, data); - FILL_FIELD(runtime_event, pid, event, data); - FILL_FIELD(runtime_event, runtime, event, data); - FILL_FIELD(runtime_event, vruntime, event, data); - - if (trace_handler->runtime_event) - trace_handler->runtime_event(&runtime_event, machine, event, - sample->cpu, sample->time, thread); -} - -static void -process_sched_fork_event(struct perf_tool *tool __used, - struct event *event, - struct perf_sample *sample, - struct machine *machine __used, - struct thread *thread) -{ - void *data = sample->raw_data; - struct trace_fork_event fork_event; - - FILL_COMMON_FIELDS(fork_event, event, data); - - FILL_ARRAY(fork_event, parent_comm, event, data); - FILL_FIELD(fork_event, parent_pid, event, data); - FILL_ARRAY(fork_event, child_comm, event, data); - FILL_FIELD(fork_event, child_pid, event, data); - - if (trace_handler->fork_event) - trace_handler->fork_event(&fork_event, event, - sample->cpu, sample->time, thread); -} - -static void -process_sched_exit_event(struct perf_tool *tool __used, - struct event *event, - struct perf_sample *sample __used, - struct machine *machine __used, - struct thread *thread __used) -{ - if (verbose) - printf("sched_exit event %p\n", event); -} - -static void -process_sched_migrate_task_event(struct perf_tool *tool __used, - struct event *event, - struct perf_sample *sample, - struct machine *machine, - struct thread *thread) -{ - void *data = sample->raw_data; - struct trace_migrate_task_event migrate_task_event; - - FILL_COMMON_FIELDS(migrate_task_event, event, data); - - FILL_ARRAY(migrate_task_event, comm, event, data); - FILL_FIELD(migrate_task_event, pid, event, data); - FILL_FIELD(migrate_task_event, prio, event, data); - FILL_FIELD(migrate_task_event, cpu, event, data); - - if (trace_handler->migrate_task_event) - trace_handler->migrate_task_event(&migrate_task_event, machine, - event, sample->cpu, - sample->time, thread); -} - -typedef void (*tracepoint_handler)(struct perf_tool *tool, struct event *event, - struct perf_sample *sample, - struct machine *machine, - struct thread *thread); - -static int perf_sched__process_tracepoint_sample(struct perf_tool *tool, - union perf_event *event __used, - struct perf_sample *sample, - struct perf_evsel *evsel, - struct machine *machine) -{ - struct thread *thread = machine__findnew_thread(machine, sample->pid); - - if (thread == NULL) { - pr_debug("problem processing %s event, skipping it.\n", - evsel->name); - return -1; - } - - evsel->hists.stats.total_period += sample->period; - hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE); - - if (evsel->handler.func != NULL) { - tracepoint_handler f = evsel->handler.func; - - if (evsel->handler.data == NULL) - evsel->handler.data = trace_find_event(evsel->attr.config); - - f(tool, evsel->handler.data, sample, machine, thread); - } - - return 0; -} - -static struct perf_tool perf_sched = { - .sample = perf_sched__process_tracepoint_sample, - .comm = perf_event__process_comm, - .lost = perf_event__process_lost, - .fork = perf_event__process_task, - .ordered_samples = true, -}; - -static void read_events(bool destroy, struct perf_session **psession) -{ - int err = -EINVAL; - const struct perf_evsel_str_handler handlers[] = { - { "sched:sched_switch", process_sched_switch_event, }, - { "sched:sched_stat_runtime", process_sched_runtime_event, }, - { "sched:sched_wakeup", process_sched_wakeup_event, }, - { "sched:sched_wakeup_new", process_sched_wakeup_event, }, - { "sched:sched_process_fork", process_sched_fork_event, }, - { "sched:sched_process_exit", process_sched_exit_event, }, - { "sched:sched_migrate_task", process_sched_migrate_task_event, }, - }; - struct perf_session *session = perf_session__new(input_name, O_RDONLY, - 0, false, &perf_sched); - if (session == NULL) - die("No Memory"); - - err = perf_evlist__set_tracepoints_handlers_array(session->evlist, handlers); - assert(err == 0); - - if (perf_session__has_traces(session, "record -R")) { - err = perf_session__process_events(session, &perf_sched); - if (err) - die("Failed to process events, error %d", err); - - nr_events = session->hists.stats.nr_events[0]; - nr_lost_events = session->hists.stats.total_lost; - nr_lost_chunks = session->hists.stats.nr_events[PERF_RECORD_LOST]; - } - - if (destroy) - perf_session__delete(session); - - if (psession) - *psession = session; -} - -static void print_bad_events(void) -{ - if (nr_unordered_timestamps && nr_timestamps) { - printf(" INFO: %.3f%% unordered timestamps (%ld out of %ld)\n", - (double)nr_unordered_timestamps/(double)nr_timestamps*100.0, - nr_unordered_timestamps, nr_timestamps); - } - if (nr_lost_events && nr_events) { - printf(" INFO: %.3f%% lost events (%ld out of %ld, in %ld chunks)\n", - (double)nr_lost_events/(double)nr_events*100.0, - nr_lost_events, nr_events, nr_lost_chunks); - } - if (nr_state_machine_bugs && nr_timestamps) { - printf(" INFO: %.3f%% state machine bugs (%ld out of %ld)", - (double)nr_state_machine_bugs/(double)nr_timestamps*100.0, - nr_state_machine_bugs, nr_timestamps); - if (nr_lost_events) - printf(" (due to lost events?)"); - printf("\n"); - } - if (nr_context_switch_bugs && nr_timestamps) { - printf(" INFO: %.3f%% context switch bugs (%ld out of %ld)", - (double)nr_context_switch_bugs/(double)nr_timestamps*100.0, - nr_context_switch_bugs, nr_timestamps); - if (nr_lost_events) - printf(" (due to lost events?)"); - printf("\n"); - } -} - -static void __cmd_lat(void) -{ - struct rb_node *next; - struct perf_session *session; - - setup_pager(); - read_events(false, &session); - sort_lat(); - - printf("\n ---------------------------------------------------------------------------------------------------------------\n"); - printf(" Task | Runtime ms | Switches | Average delay ms | Maximum delay ms | Maximum delay at |\n"); - printf(" ---------------------------------------------------------------------------------------------------------------\n"); - - next = rb_first(&sorted_atom_root); - - while (next) { - struct work_atoms *work_list; - - work_list = rb_entry(next, struct work_atoms, node); - output_lat_thread(work_list); - next = rb_next(next); - } - - printf(" -----------------------------------------------------------------------------------------\n"); - printf(" TOTAL: |%11.3f ms |%9" PRIu64 " |\n", - (double)all_runtime/1e6, all_count); - - printf(" ---------------------------------------------------\n"); - - print_bad_events(); - printf("\n"); - - perf_session__delete(session); -} - -static struct trace_sched_handler map_ops = { - .wakeup_event = NULL, - .switch_event = map_switch_event, - .runtime_event = NULL, - .fork_event = NULL, -}; - -static void __cmd_map(void) -{ - max_cpu = sysconf(_SC_NPROCESSORS_CONF); - - setup_pager(); - read_events(true, NULL); - print_bad_events(); -} - -static void __cmd_replay(void) -{ - unsigned long i; - - calibrate_run_measurement_overhead(); - calibrate_sleep_measurement_overhead(); - - test_calibrations(); - - read_events(true, NULL); - - printf("nr_run_events: %ld\n", nr_run_events); - printf("nr_sleep_events: %ld\n", nr_sleep_events); - printf("nr_wakeup_events: %ld\n", nr_wakeup_events); - - if (targetless_wakeups) - printf("target-less wakeups: %ld\n", targetless_wakeups); - if (multitarget_wakeups) - printf("multi-target wakeups: %ld\n", multitarget_wakeups); - if (nr_run_events_optimized) - printf("run atoms optimized: %ld\n", - nr_run_events_optimized); - - print_task_traces(); - add_cross_task_wakeups(); - - create_tasks(); - printf("------------------------------------------------------------\n"); - for (i = 0; i < replay_repeat; i++) - run_one_test(); -} - - -static const char * const sched_usage[] = { - "perf sched [<options>] {record|latency|map|replay|script}", - NULL -}; - -static const struct option sched_options[] = { - OPT_STRING('i', "input", &input_name, "file", - "input file name"), - OPT_INCR('v', "verbose", &verbose, - "be more verbose (show symbol address, etc)"), - OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, - "dump raw trace in ASCII"), - OPT_END() -}; - -static const char * const latency_usage[] = { - "perf sched latency [<options>]", - NULL -}; - -static const struct option latency_options[] = { - OPT_STRING('s', "sort", &sort_order, "key[,key2...]", - "sort by key(s): runtime, switch, avg, max"), - OPT_INCR('v', "verbose", &verbose, - "be more verbose (show symbol address, etc)"), - OPT_INTEGER('C', "CPU", &profile_cpu, - "CPU to profile on"), - OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, - "dump raw trace in ASCII"), - OPT_END() -}; - -static const char * const replay_usage[] = { - "perf sched replay [<options>]", - NULL -}; - -static const struct option replay_options[] = { - OPT_UINTEGER('r', "repeat", &replay_repeat, - "repeat the workload replay N times (-1: infinite)"), - OPT_INCR('v', "verbose", &verbose, - "be more verbose (show symbol address, etc)"), - OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, - "dump raw trace in ASCII"), - OPT_END() -}; - -static void setup_sorting(void) -{ - char *tmp, *tok, *str = strdup(sort_order); - - for (tok = strtok_r(str, ", ", &tmp); - tok; tok = strtok_r(NULL, ", ", &tmp)) { - if (sort_dimension__add(tok, &sort_list) < 0) { - error("Unknown --sort key: `%s'", tok); - usage_with_options(latency_usage, latency_options); - } - } - - free(str); - - sort_dimension__add("pid", &cmp_pid); -} - -static const char *record_args[] = { - "record", - "-a", - "-R", - "-f", - "-m", "1024", - "-c", "1", - "-e", "sched:sched_switch", - "-e", "sched:sched_stat_wait", - "-e", "sched:sched_stat_sleep", - "-e", "sched:sched_stat_iowait", - "-e", "sched:sched_stat_runtime", - "-e", "sched:sched_process_exit", - "-e", "sched:sched_process_fork", - "-e", "sched:sched_wakeup", - "-e", "sched:sched_migrate_task", -}; - -static int __cmd_record(int argc, const char **argv) -{ - unsigned int rec_argc, i, j; - const char **rec_argv; - - rec_argc = ARRAY_SIZE(record_args) + argc - 1; - rec_argv = calloc(rec_argc + 1, sizeof(char *)); - - if (rec_argv == NULL) - return -ENOMEM; - - for (i = 0; i < ARRAY_SIZE(record_args); i++) - rec_argv[i] = strdup(record_args[i]); - - for (j = 1; j < (unsigned int)argc; j++, i++) - rec_argv[i] = argv[j]; - - BUG_ON(i != rec_argc); - - return cmd_record(i, rec_argv, NULL); -} - -int cmd_sched(int argc, const char **argv, const char *prefix __used) -{ - argc = parse_options(argc, argv, sched_options, sched_usage, - PARSE_OPT_STOP_AT_NON_OPTION); - if (!argc) - usage_with_options(sched_usage, sched_options); - - /* - * Aliased to 'perf script' for now: - */ - if (!strcmp(argv[0], "script")) - return cmd_script(argc, argv, prefix); - - symbol__init(); - if (!strncmp(argv[0], "rec", 3)) { - return __cmd_record(argc, argv); - } else if (!strncmp(argv[0], "lat", 3)) { - trace_handler = &lat_ops; - if (argc > 1) { - argc = parse_options(argc, argv, latency_options, latency_usage, 0); - if (argc) - usage_with_options(latency_usage, latency_options); - } - setup_sorting(); - __cmd_lat(); - } else if (!strcmp(argv[0], "map")) { - trace_handler = &map_ops; - setup_sorting(); - __cmd_map(); - } else if (!strncmp(argv[0], "rep", 3)) { - trace_handler = &replay_ops; - if (argc) { - argc = parse_options(argc, argv, replay_options, replay_usage, 0); - if (argc) - usage_with_options(replay_usage, replay_options); - } - __cmd_replay(); - } else { - usage_with_options(sched_usage, sched_options); - } - - return 0; -} |