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Subject[PATCH 15/18] perf sched: Use perf_tool as ancestor
Date
From: Arnaldo Carvalho de Melo <acme@redhat.com>

So that we can remove all the globals.

Before:

text data bss dec hex filename
1586833 110368 1438600 3135801 2fd939 /tmp/oldperf

After:

text data bss dec hex filename
1629329 93568 848328 2571225 273bd9 /root/bin/perf

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-oph40vikij0crjz4eyapneov@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/builtin-sched.c | 1136 ++++++++++++++++++++++----------------------
1 file changed, 562 insertions(+), 574 deletions(-)

diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index af11b1a..79f88fa 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -23,26 +23,12 @@
#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 {
@@ -80,44 +66,6 @@ struct sched_atom {
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 {
@@ -149,11 +97,169 @@ struct work_atoms {

typedef int (*sort_fn_t)(struct work_atoms *, struct work_atoms *);

-static struct rb_root atom_root, sorted_atom_root;
+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;

-static u64 all_runtime;
-static u64 all_count;
+ 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 perf_sched;
+
+struct trace_sched_handler {
+ int (*switch_event)(struct perf_sched *sched,
+ struct trace_switch_event *event,
+ struct machine *machine,
+ struct event_format *tp_format,
+ struct perf_sample *sample);
+
+ int (*runtime_event)(struct perf_sched *sched,
+ struct trace_runtime_event *event,
+ struct machine *machine,
+ struct perf_sample *sample);
+
+ int (*wakeup_event)(struct perf_sched *sched,
+ struct trace_wakeup_event *event,
+ struct machine *machine,
+ struct event_format *tp_format,
+ struct perf_sample *sample);
+
+ int (*fork_event)(struct perf_sched *sched,
+ struct trace_fork_event *event,
+ struct event_format *tp_format);
+
+ int (*migrate_task_event)(struct perf_sched *sched,
+ struct trace_migrate_task_event *event,
+ struct machine *machine,
+ struct perf_sample *sample);
+};
+
+struct perf_sched {
+ struct perf_tool tool;
+ const char *input_name;
+ const char *sort_order;
+ unsigned long nr_tasks;
+ struct task_desc *pid_to_task[MAX_PID];
+ struct task_desc **tasks;
+ const struct trace_sched_handler *tp_handler;
+ pthread_mutex_t start_work_mutex;
+ pthread_mutex_t work_done_wait_mutex;
+ int profile_cpu;
+/*
+ * 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.
+ */
+ int max_cpu;
+ u32 curr_pid[MAX_CPUS];
+ struct thread *curr_thread[MAX_CPUS];
+ char next_shortname1;
+ char next_shortname2;
+ unsigned int replay_repeat;
+ unsigned long nr_run_events;
+ unsigned long nr_sleep_events;
+ unsigned long nr_wakeup_events;
+ unsigned long nr_sleep_corrections;
+ unsigned long nr_run_events_optimized;
+ unsigned long targetless_wakeups;
+ unsigned long multitarget_wakeups;
+ unsigned long nr_runs;
+ unsigned long nr_timestamps;
+ unsigned long nr_unordered_timestamps;
+ unsigned long nr_state_machine_bugs;
+ unsigned long nr_context_switch_bugs;
+ unsigned long nr_events;
+ unsigned long nr_lost_chunks;
+ unsigned long nr_lost_events;
+ u64 run_measurement_overhead;
+ u64 sleep_measurement_overhead;
+ u64 start_time;
+ u64 cpu_usage;
+ u64 runavg_cpu_usage;
+ u64 parent_cpu_usage;
+ u64 runavg_parent_cpu_usage;
+ u64 sum_runtime;
+ u64 sum_fluct;
+ u64 run_avg;
+ u64 all_runtime;
+ u64 all_count;
+ u64 cpu_last_switched[MAX_CPUS];
+ struct rb_root atom_root, sorted_atom_root;
+ struct list_head sort_list, cmp_pid;
+};

static u64 get_nsecs(void)
{
@@ -164,13 +270,13 @@ static u64 get_nsecs(void)
return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
}

-static void burn_nsecs(u64 nsecs)
+static void burn_nsecs(struct perf_sched *sched, u64 nsecs)
{
u64 T0 = get_nsecs(), T1;

do {
T1 = get_nsecs();
- } while (T1 + run_measurement_overhead < T0 + nsecs);
+ } while (T1 + sched->run_measurement_overhead < T0 + nsecs);
}

static void sleep_nsecs(u64 nsecs)
@@ -183,24 +289,24 @@ static void sleep_nsecs(u64 nsecs)
nanosleep(&ts, NULL);
}

-static void calibrate_run_measurement_overhead(void)
+static void calibrate_run_measurement_overhead(struct perf_sched *sched)
{
u64 T0, T1, delta, min_delta = 1000000000ULL;
int i;

for (i = 0; i < 10; i++) {
T0 = get_nsecs();
- burn_nsecs(0);
+ burn_nsecs(sched, 0);
T1 = get_nsecs();
delta = T1-T0;
min_delta = min(min_delta, delta);
}
- run_measurement_overhead = min_delta;
+ sched->run_measurement_overhead = min_delta;

printf("run measurement overhead: %" PRIu64 " nsecs\n", min_delta);
}

-static void calibrate_sleep_measurement_overhead(void)
+static void calibrate_sleep_measurement_overhead(struct perf_sched *sched)
{
u64 T0, T1, delta, min_delta = 1000000000ULL;
int i;
@@ -213,7 +319,7 @@ static void calibrate_sleep_measurement_overhead(void)
min_delta = min(min_delta, delta);
}
min_delta -= 10000;
- sleep_measurement_overhead = min_delta;
+ sched->sleep_measurement_overhead = min_delta;

printf("sleep measurement overhead: %" PRIu64 " nsecs\n", min_delta);
}
@@ -246,8 +352,8 @@ static struct sched_atom *last_event(struct task_desc *task)
return task->atoms[task->nr_events - 1];
}

-static void
-add_sched_event_run(struct task_desc *task, u64 timestamp, u64 duration)
+static void add_sched_event_run(struct perf_sched *sched, struct task_desc *task,
+ u64 timestamp, u64 duration)
{
struct sched_atom *event, *curr_event = last_event(task);

@@ -256,7 +362,7 @@ add_sched_event_run(struct task_desc *task, u64 timestamp, u64 duration)
* to it:
*/
if (curr_event && curr_event->type == SCHED_EVENT_RUN) {
- nr_run_events_optimized++;
+ sched->nr_run_events_optimized++;
curr_event->duration += duration;
return;
}
@@ -266,12 +372,11 @@ add_sched_event_run(struct task_desc *task, u64 timestamp, u64 duration)
event->type = SCHED_EVENT_RUN;
event->duration = duration;

- nr_run_events++;
+ sched->nr_run_events++;
}

-static void
-add_sched_event_wakeup(struct task_desc *task, u64 timestamp,
- struct task_desc *wakee)
+static void add_sched_event_wakeup(struct perf_sched *sched, struct task_desc *task,
+ u64 timestamp, struct task_desc *wakee)
{
struct sched_atom *event, *wakee_event;

@@ -281,11 +386,11 @@ add_sched_event_wakeup(struct task_desc *task, u64 timestamp,

wakee_event = last_event(wakee);
if (!wakee_event || wakee_event->type != SCHED_EVENT_SLEEP) {
- targetless_wakeups++;
+ sched->targetless_wakeups++;
return;
}
if (wakee_event->wait_sem) {
- multitarget_wakeups++;
+ sched->multitarget_wakeups++;
return;
}

@@ -294,89 +399,89 @@ add_sched_event_wakeup(struct task_desc *task, u64 timestamp,
wakee_event->specific_wait = 1;
event->wait_sem = wakee_event->wait_sem;

- nr_wakeup_events++;
+ sched->nr_wakeup_events++;
}

-static void
-add_sched_event_sleep(struct task_desc *task, u64 timestamp,
- u64 task_state __maybe_unused)
+static void add_sched_event_sleep(struct perf_sched *sched, struct task_desc *task,
+ u64 timestamp, u64 task_state __maybe_unused)
{
struct sched_atom *event = get_new_event(task, timestamp);

event->type = SCHED_EVENT_SLEEP;

- nr_sleep_events++;
+ sched->nr_sleep_events++;
}

-static struct task_desc *register_pid(unsigned long pid, const char *comm)
+static struct task_desc *register_pid(struct perf_sched *sched,
+ unsigned long pid, const char *comm)
{
struct task_desc *task;

BUG_ON(pid >= MAX_PID);

- task = pid_to_task[pid];
+ task = sched->pid_to_task[pid];

if (task)
return task;

task = zalloc(sizeof(*task));
task->pid = pid;
- task->nr = nr_tasks;
+ task->nr = sched->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);
+ add_sched_event_sleep(sched, 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;
+ sched->pid_to_task[pid] = task;
+ sched->nr_tasks++;
+ sched->tasks = realloc(sched->tasks, sched->nr_tasks * sizeof(struct task_task *));
+ BUG_ON(!sched->tasks);
+ sched->tasks[task->nr] = task;

if (verbose)
- printf("registered task #%ld, PID %ld (%s)\n", nr_tasks, pid, comm);
+ printf("registered task #%ld, PID %ld (%s)\n", sched->nr_tasks, pid, comm);

return task;
}


-static void print_task_traces(void)
+static void print_task_traces(struct perf_sched *sched)
{
struct task_desc *task;
unsigned long i;

- for (i = 0; i < nr_tasks; i++) {
- task = tasks[i];
+ for (i = 0; i < sched->nr_tasks; i++) {
+ task = sched->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)
+static void add_cross_task_wakeups(struct perf_sched *sched)
{
struct task_desc *task1, *task2;
unsigned long i, j;

- for (i = 0; i < nr_tasks; i++) {
- task1 = tasks[i];
+ for (i = 0; i < sched->nr_tasks; i++) {
+ task1 = sched->tasks[i];
j = i + 1;
- if (j == nr_tasks)
+ if (j == sched->nr_tasks)
j = 0;
- task2 = tasks[j];
- add_sched_event_wakeup(task1, 0, task2);
+ task2 = sched->tasks[j];
+ add_sched_event_wakeup(sched, task1, 0, task2);
}
}

-static void process_sched_event(struct task_desc *this_task __maybe_unused,
- struct sched_atom *atom)
+static void perf_sched__process_event(struct perf_sched *sched,
+ struct sched_atom *atom)
{
int ret = 0;

switch (atom->type) {
case SCHED_EVENT_RUN:
- burn_nsecs(atom->duration);
+ burn_nsecs(sched, atom->duration);
break;
case SCHED_EVENT_SLEEP:
if (atom->wait_sem)
@@ -439,14 +544,23 @@ static u64 get_cpu_usage_nsec_self(int fd)
return runtime;
}

+struct sched_thread_parms {
+ struct task_desc *task;
+ struct perf_sched *sched;
+};
+
static void *thread_func(void *ctx)
{
- struct task_desc *this_task = ctx;
+ struct sched_thread_parms *parms = ctx;
+ struct task_desc *this_task = parms->task;
+ struct perf_sched *sched = parms->sched;
u64 cpu_usage_0, cpu_usage_1;
unsigned long i, ret;
char comm2[22];
int fd;

+ free(parms);
+
sprintf(comm2, ":%s", this_task->comm);
prctl(PR_SET_NAME, comm2);
fd = self_open_counters();
@@ -455,16 +569,16 @@ static void *thread_func(void *ctx)
again:
ret = sem_post(&this_task->ready_for_work);
BUG_ON(ret);
- ret = pthread_mutex_lock(&start_work_mutex);
+ ret = pthread_mutex_lock(&sched->start_work_mutex);
BUG_ON(ret);
- ret = pthread_mutex_unlock(&start_work_mutex);
+ ret = pthread_mutex_unlock(&sched->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]);
+ perf_sched__process_event(sched, this_task->atoms[i]);
}

cpu_usage_1 = get_cpu_usage_nsec_self(fd);
@@ -472,15 +586,15 @@ again:
ret = sem_post(&this_task->work_done_sem);
BUG_ON(ret);

- ret = pthread_mutex_lock(&work_done_wait_mutex);
+ ret = pthread_mutex_lock(&sched->work_done_wait_mutex);
BUG_ON(ret);
- ret = pthread_mutex_unlock(&work_done_wait_mutex);
+ ret = pthread_mutex_unlock(&sched->work_done_wait_mutex);
BUG_ON(ret);

goto again;
}

-static void create_tasks(void)
+static void create_tasks(struct perf_sched *sched)
{
struct task_desc *task;
pthread_attr_t attr;
@@ -492,128 +606,129 @@ static void create_tasks(void)
err = pthread_attr_setstacksize(&attr,
(size_t) max(16 * 1024, PTHREAD_STACK_MIN));
BUG_ON(err);
- err = pthread_mutex_lock(&start_work_mutex);
+ err = pthread_mutex_lock(&sched->start_work_mutex);
BUG_ON(err);
- err = pthread_mutex_lock(&work_done_wait_mutex);
+ err = pthread_mutex_lock(&sched->work_done_wait_mutex);
BUG_ON(err);
- for (i = 0; i < nr_tasks; i++) {
- task = tasks[i];
+ for (i = 0; i < sched->nr_tasks; i++) {
+ struct sched_thread_parms *parms = malloc(sizeof(*parms));
+ BUG_ON(parms == NULL);
+ parms->task = task = sched->tasks[i];
+ parms->sched = sched;
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);
+ err = pthread_create(&task->thread, &attr, thread_func, parms);
BUG_ON(err);
}
}

-static void wait_for_tasks(void)
+static void wait_for_tasks(struct perf_sched *sched)
{
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);
+ sched->start_time = get_nsecs();
+ sched->cpu_usage = 0;
+ pthread_mutex_unlock(&sched->work_done_wait_mutex);

- for (i = 0; i < nr_tasks; i++) {
- task = tasks[i];
+ for (i = 0; i < sched->nr_tasks; i++) {
+ task = sched->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);
+ ret = pthread_mutex_lock(&sched->work_done_wait_mutex);
BUG_ON(ret);

cpu_usage_0 = get_cpu_usage_nsec_parent();

- pthread_mutex_unlock(&start_work_mutex);
+ pthread_mutex_unlock(&sched->start_work_mutex);

- for (i = 0; i < nr_tasks; i++) {
- task = tasks[i];
+ for (i = 0; i < sched->nr_tasks; i++) {
+ task = sched->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;
+ sched->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;
+ if (!sched->runavg_cpu_usage)
+ sched->runavg_cpu_usage = sched->cpu_usage;
+ sched->runavg_cpu_usage = (sched->runavg_cpu_usage * 9 + sched->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;
+ sched->parent_cpu_usage = cpu_usage_1 - cpu_usage_0;
+ if (!sched->runavg_parent_cpu_usage)
+ sched->runavg_parent_cpu_usage = sched->parent_cpu_usage;
+ sched->runavg_parent_cpu_usage = (sched->runavg_parent_cpu_usage * 9 +
+ sched->parent_cpu_usage)/10;

- ret = pthread_mutex_lock(&start_work_mutex);
+ ret = pthread_mutex_lock(&sched->start_work_mutex);
BUG_ON(ret);

- for (i = 0; i < nr_tasks; i++) {
- task = tasks[i];
+ for (i = 0; i < sched->nr_tasks; i++) {
+ task = sched->tasks[i];
sem_init(&task->sleep_sem, 0, 0);
task->curr_event = 0;
}
}

-static void run_one_test(void)
+static void run_one_test(struct perf_sched *sched)
{
u64 T0, T1, delta, avg_delta, fluct;

T0 = get_nsecs();
- wait_for_tasks();
+ wait_for_tasks(sched);
T1 = get_nsecs();

delta = T1 - T0;
- sum_runtime += delta;
- nr_runs++;
+ sched->sum_runtime += delta;
+ sched->nr_runs++;

- avg_delta = sum_runtime / nr_runs;
+ avg_delta = sched->sum_runtime / sched->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;
+ sched->sum_fluct += fluct;
+ if (!sched->run_avg)
+ sched->run_avg = delta;
+ sched->run_avg = (sched->run_avg * 9 + delta) / 10;

- printf("#%-3ld: %0.3f, ",
- nr_runs, (double)delta/1000000.0);
+ printf("#%-3ld: %0.3f, ", sched->nr_runs, (double)delta / 1000000.0);

- printf("ravg: %0.2f, ",
- (double)run_avg/1e6);
+ printf("ravg: %0.2f, ", (double)sched->run_avg / 1e6);

printf("cpu: %0.2f / %0.2f",
- (double)cpu_usage/1e6, (double)runavg_cpu_usage/1e6);
+ (double)sched->cpu_usage / 1e6, (double)sched->runavg_cpu_usage / 1e6);

#if 0
/*
* rusage statistics done by the parent, these are less
- * accurate than the sum_exec_runtime based statistics:
+ * accurate than the sched->sum_exec_runtime based statistics:
*/
printf(" [%0.2f / %0.2f]",
- (double)parent_cpu_usage/1e6,
- (double)runavg_parent_cpu_usage/1e6);
+ (double)sched->parent_cpu_usage/1e6,
+ (double)sched->runavg_parent_cpu_usage/1e6);
#endif

printf("\n");

- if (nr_sleep_corrections)
- printf(" (%ld sleep corrections)\n", nr_sleep_corrections);
- nr_sleep_corrections = 0;
+ if (sched->nr_sleep_corrections)
+ printf(" (%ld sleep corrections)\n", sched->nr_sleep_corrections);
+ sched->nr_sleep_corrections = 0;
}

-static void test_calibrations(void)
+static void test_calibrations(struct perf_sched *sched)
{
u64 T0, T1;

T0 = get_nsecs();
- burn_nsecs(1e6);
+ burn_nsecs(sched, 1e6);
T1 = get_nsecs();

printf("the run test took %" PRIu64 " nsecs\n", T1 - T0);
@@ -643,115 +758,9 @@ do { \
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 {
- int (*switch_event)(struct trace_switch_event *event,
- struct machine *machine,
- struct event_format *tp_format,
- struct perf_sample *sample);
-
- int (*runtime_event)(struct trace_runtime_event *event,
- struct machine *machine,
- struct perf_sample *sample);
-
- int (*wakeup_event)(struct trace_wakeup_event *event,
- struct machine *machine,
- struct event_format *tp_format,
- struct perf_sample *sample);
-
- int (*fork_event)(struct trace_fork_event *event,
- struct event_format *tp_format);
-
- int (*migrate_task_event)(struct trace_migrate_task_event *event,
- struct machine *machine,
- struct perf_sample *sample);
-};
-
-
static int
-replay_wakeup_event(struct trace_wakeup_event *wakeup_event,
+replay_wakeup_event(struct perf_sched *sched,
+ struct trace_wakeup_event *wakeup_event,
struct machine *machine __maybe_unused,
struct event_format *event, struct perf_sample *sample)
{
@@ -761,22 +770,19 @@ replay_wakeup_event(struct trace_wakeup_event *wakeup_event,
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);
+ 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);
+ waker = register_pid(sched, wakeup_event->common_pid, "<unknown>");
+ wakee = register_pid(sched, wakeup_event->pid, wakeup_event->comm);

- add_sched_event_wakeup(waker, sample->time, wakee);
+ add_sched_event_wakeup(sched, waker, sample->time, wakee);
return 0;
}

-static u64 cpu_last_switched[MAX_CPUS];
-
static int
-replay_switch_event(struct trace_switch_event *switch_event,
+replay_switch_event(struct perf_sched *sched,
+ struct trace_switch_event *switch_event,
struct machine *machine __maybe_unused,
struct event_format *event,
struct perf_sample *sample)
@@ -792,7 +798,7 @@ replay_switch_event(struct trace_switch_event *switch_event,
if (cpu >= MAX_CPUS || cpu < 0)
return 0;

- timestamp0 = cpu_last_switched[cpu];
+ timestamp0 = sched->cpu_last_switched[cpu];
if (timestamp0)
delta = timestamp - timestamp0;
else
@@ -810,20 +816,19 @@ replay_switch_event(struct trace_switch_event *switch_event,
delta);
}

- prev = register_pid(switch_event->prev_pid, switch_event->prev_comm);
- next = register_pid(switch_event->next_pid, switch_event->next_comm);
+ prev = register_pid(sched, switch_event->prev_pid, switch_event->prev_comm);
+ next = register_pid(sched, switch_event->next_pid, switch_event->next_comm);

- cpu_last_switched[cpu] = timestamp;
+ sched->cpu_last_switched[cpu] = timestamp;

- add_sched_event_run(prev, timestamp, delta);
- add_sched_event_sleep(prev, timestamp, switch_event->prev_state);
+ add_sched_event_run(sched, prev, timestamp, delta);
+ add_sched_event_sleep(sched, prev, timestamp, switch_event->prev_state);

return 0;
}

-
static int
-replay_fork_event(struct trace_fork_event *fork_event,
+replay_fork_event(struct perf_sched *sched, struct trace_fork_event *fork_event,
struct event_format *event)
{
if (verbose) {
@@ -831,25 +836,17 @@ replay_fork_event(struct trace_fork_event *fork_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);
+ register_pid(sched, fork_event->parent_pid, fork_event->parent_comm);
+ register_pid(sched, fork_event->child_pid, fork_event->child_comm);
return 0;
}

-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)
{
@@ -918,7 +915,7 @@ __thread_latency_insert(struct rb_root *root, struct work_atoms *data,
rb_insert_color(&data->node, root);
}

-static int thread_atoms_insert(struct thread *thread)
+static int thread_atoms_insert(struct perf_sched *sched, struct thread *thread)
{
struct work_atoms *atoms = zalloc(sizeof(*atoms));
if (!atoms) {
@@ -928,11 +925,12 @@ static int thread_atoms_insert(struct thread *thread)

atoms->thread = thread;
INIT_LIST_HEAD(&atoms->work_list);
- __thread_latency_insert(&atom_root, atoms, &cmp_pid);
+ __thread_latency_insert(&sched->atom_root, atoms, &sched->cmp_pid);
return 0;
}

-static int latency_fork_event(struct trace_fork_event *fork_event __maybe_unused,
+static int latency_fork_event(struct perf_sched *sched __maybe_unused,
+ struct trace_fork_event *fork_event __maybe_unused,
struct event_format *event __maybe_unused)
{
/* should insert the newcomer */
@@ -1014,7 +1012,8 @@ add_sched_in_event(struct work_atoms *atoms, u64 timestamp)
}

static int
-latency_switch_event(struct trace_switch_event *switch_event,
+latency_switch_event(struct perf_sched *sched,
+ struct trace_switch_event *switch_event,
struct machine *machine,
struct event_format *event __maybe_unused,
struct perf_sample *sample)
@@ -1027,8 +1026,8 @@ latency_switch_event(struct trace_switch_event *switch_event,

BUG_ON(cpu >= MAX_CPUS || cpu < 0);

- timestamp0 = cpu_last_switched[cpu];
- cpu_last_switched[cpu] = timestamp;
+ timestamp0 = sched->cpu_last_switched[cpu];
+ sched->cpu_last_switched[cpu] = timestamp;
if (timestamp0)
delta = timestamp - timestamp0;
else
@@ -1042,11 +1041,11 @@ latency_switch_event(struct trace_switch_event *switch_event,
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);
+ out_events = thread_atoms_search(&sched->atom_root, sched_out, &sched->cmp_pid);
if (!out_events) {
- if (thread_atoms_insert(sched_out))
+ if (thread_atoms_insert(sched, sched_out))
return -1;
- out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid);
+ out_events = thread_atoms_search(&sched->atom_root, sched_out, &sched->cmp_pid);
if (!out_events) {
pr_err("out-event: Internal tree error");
return -1;
@@ -1055,11 +1054,11 @@ latency_switch_event(struct trace_switch_event *switch_event,
if (add_sched_out_event(out_events, sched_out_state(switch_event), timestamp))
return -1;

- in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid);
+ in_events = thread_atoms_search(&sched->atom_root, sched_in, &sched->cmp_pid);
if (!in_events) {
- if (thread_atoms_insert(sched_in))
+ if (thread_atoms_insert(sched, sched_in))
return -1;
- in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid);
+ in_events = thread_atoms_search(&sched->atom_root, sched_in, &sched->cmp_pid);
if (!in_events) {
pr_err("in-event: Internal tree error");
return -1;
@@ -1077,19 +1076,20 @@ latency_switch_event(struct trace_switch_event *switch_event,
}

static int
-latency_runtime_event(struct trace_runtime_event *runtime_event,
+latency_runtime_event(struct perf_sched *sched,
+ struct trace_runtime_event *runtime_event,
struct machine *machine, struct perf_sample *sample)
{
struct thread *thread = machine__findnew_thread(machine, runtime_event->pid);
- struct work_atoms *atoms = thread_atoms_search(&atom_root, thread, &cmp_pid);
+ struct work_atoms *atoms = thread_atoms_search(&sched->atom_root, thread, &sched->cmp_pid);
u64 timestamp = sample->time;
int cpu = sample->cpu;

BUG_ON(cpu >= MAX_CPUS || cpu < 0);
if (!atoms) {
- if (thread_atoms_insert(thread))
+ if (thread_atoms_insert(sched, thread))
return -1;
- atoms = thread_atoms_search(&atom_root, thread, &cmp_pid);
+ atoms = thread_atoms_search(&sched->atom_root, thread, &sched->cmp_pid);
if (!atoms) {
pr_debug("in-event: Internal tree error");
return -1;
@@ -1103,7 +1103,8 @@ latency_runtime_event(struct trace_runtime_event *runtime_event,
}

static int
-latency_wakeup_event(struct trace_wakeup_event *wakeup_event,
+latency_wakeup_event(struct perf_sched *sched,
+ struct trace_wakeup_event *wakeup_event,
struct machine *machine,
struct event_format *event __maybe_unused,
struct perf_sample *sample)
@@ -1118,11 +1119,11 @@ latency_wakeup_event(struct trace_wakeup_event *wakeup_event,
return 0;

wakee = machine__findnew_thread(machine, wakeup_event->pid);
- atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid);
+ atoms = thread_atoms_search(&sched->atom_root, wakee, &sched->cmp_pid);
if (!atoms) {
- if (thread_atoms_insert(wakee))
+ if (thread_atoms_insert(sched, wakee))
return -1;
- atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid);
+ atoms = thread_atoms_search(&sched->atom_root, wakee, &sched->cmp_pid);
if (!atoms) {
pr_debug("wakeup-event: Internal tree error");
return -1;
@@ -1140,12 +1141,12 @@ latency_wakeup_event(struct trace_wakeup_event *wakeup_event,
* 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++;
+ if (sched->profile_cpu == -1 && atom->state != THREAD_SLEEPING)
+ sched->nr_state_machine_bugs++;

- nr_timestamps++;
+ sched->nr_timestamps++;
if (atom->sched_out_time > timestamp) {
- nr_unordered_timestamps++;
+ sched->nr_unordered_timestamps++;
return 0;
}

@@ -1155,7 +1156,8 @@ latency_wakeup_event(struct trace_wakeup_event *wakeup_event,
}

static int
-latency_migrate_task_event(struct trace_migrate_task_event *migrate_task_event,
+latency_migrate_task_event(struct perf_sched *sched,
+ struct trace_migrate_task_event *migrate_task_event,
struct machine *machine, struct perf_sample *sample)
{
u64 timestamp = sample->time;
@@ -1166,16 +1168,16 @@ latency_migrate_task_event(struct trace_migrate_task_event *migrate_task_event,
/*
* Only need to worry about migration when profiling one CPU.
*/
- if (profile_cpu == -1)
+ if (sched->profile_cpu == -1)
return 0;

migrant = machine__findnew_thread(machine, migrate_task_event->pid);
- atoms = thread_atoms_search(&atom_root, migrant, &cmp_pid);
+ atoms = thread_atoms_search(&sched->atom_root, migrant, &sched->cmp_pid);
if (!atoms) {
- if (thread_atoms_insert(migrant))
+ if (thread_atoms_insert(sched, migrant))
return -1;
- register_pid(migrant->pid, migrant->comm);
- atoms = thread_atoms_search(&atom_root, migrant, &cmp_pid);
+ register_pid(sched, migrant->pid, migrant->comm);
+ atoms = thread_atoms_search(&sched->atom_root, migrant, &sched->cmp_pid);
if (!atoms) {
pr_debug("migration-event: Internal tree error");
return -1;
@@ -1189,23 +1191,15 @@ latency_migrate_task_event(struct trace_migrate_task_event *migrate_task_event,
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++;
+ sched->nr_timestamps++;

if (atom->sched_out_time > timestamp)
- nr_unordered_timestamps++;
+ sched->nr_unordered_timestamps++;

return 0;
}

-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)
+static void output_lat_thread(struct perf_sched *sched, struct work_atoms *work_list)
{
int i;
int ret;
@@ -1219,8 +1213,8 @@ static void output_lat_thread(struct work_atoms *work_list)
if (!strcmp(work_list->thread->comm, "swapper"))
return;

- all_runtime += work_list->total_runtime;
- all_count += work_list->nb_atoms;
+ sched->all_runtime += work_list->total_runtime;
+ sched->all_count += work_list->nb_atoms;

ret = printf(" %s:%d ", work_list->thread->comm, work_list->thread->pid);

@@ -1246,11 +1240,6 @@ static int pid_cmp(struct work_atoms *l, struct work_atoms *r)
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;
@@ -1272,11 +1261,6 @@ static int avg_cmp(struct work_atoms *l, struct work_atoms *r)
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)
@@ -1287,11 +1271,6 @@ static int max_cmp(struct work_atoms *l, struct work_atoms *r)
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)
@@ -1302,11 +1281,6 @@ static int switch_cmp(struct work_atoms *l, struct work_atoms *r)
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)
@@ -1317,28 +1291,38 @@ static int runtime_cmp(struct work_atoms *l, struct work_atoms *r)
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;
+ size_t i;
+ static struct sort_dimension avg_sort_dimension = {
+ .name = "avg",
+ .cmp = avg_cmp,
+ };
+ static struct sort_dimension max_sort_dimension = {
+ .name = "max",
+ .cmp = max_cmp,
+ };
+ static struct sort_dimension pid_sort_dimension = {
+ .name = "pid",
+ .cmp = pid_cmp,
+ };
+ static struct sort_dimension runtime_sort_dimension = {
+ .name = "runtime",
+ .cmp = runtime_cmp,
+ };
+ static struct sort_dimension switch_sort_dimension = {
+ .name = "switch",
+ .cmp = switch_cmp,
+ };
+ struct sort_dimension *available_sorts[] = {
+ &pid_sort_dimension,
+ &avg_sort_dimension,
+ &max_sort_dimension,
+ &switch_sort_dimension,
+ &runtime_sort_dimension,
+ };

- for (i = 0; i < NB_AVAILABLE_SORTS; i++) {
+ for (i = 0; i < ARRAY_SIZE(available_sorts); i++) {
if (!strcmp(available_sorts[i]->name, tok)) {
list_add_tail(&available_sorts[i]->list, list);

@@ -1349,31 +1333,28 @@ static int sort_dimension__add(const char *tok, struct list_head *list)
return -1;
}

-static void setup_sorting(void);
-
-static void sort_lat(void)
+static void perf_sched__sort_lat(struct perf_sched *sched)
{
struct rb_node *node;

for (;;) {
struct work_atoms *data;
- node = rb_first(&atom_root);
+ node = rb_first(&sched->atom_root);
if (!node)
break;

- rb_erase(node, &atom_root);
+ rb_erase(node, &sched->atom_root);
data = rb_entry(node, struct work_atoms, node);
- __thread_latency_insert(&sorted_atom_root, data, &sort_list);
+ __thread_latency_insert(&sched->sorted_atom_root, data, &sched->sort_list);
}
}

-static struct trace_sched_handler *trace_handler;
-
-static int process_sched_wakeup_event(struct perf_tool *tool __maybe_unused,
+static int process_sched_wakeup_event(struct perf_tool *tool,
struct event_format *event,
struct perf_sample *sample,
struct machine *machine)
{
+ struct perf_sched *sched = container_of(tool, struct perf_sched, tool);
void *data = sample->raw_data;
struct trace_wakeup_event wakeup_event;
int err = 0;
@@ -1386,27 +1367,15 @@ static int process_sched_wakeup_event(struct perf_tool *tool __maybe_unused,
FILL_FIELD(wakeup_event, success, event, data);
FILL_FIELD(wakeup_event, cpu, event, data);

- if (trace_handler->wakeup_event)
- err = trace_handler->wakeup_event(&wakeup_event, machine, event, sample);
+ if (sched->tp_handler->wakeup_event)
+ err = sched->tp_handler->wakeup_event(sched, &wakeup_event, machine, event, sample);

return err;
}

-/*
- * 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 int
-map_switch_event(struct trace_switch_event *switch_event,
+map_switch_event(struct perf_sched *sched,
+ struct trace_switch_event *switch_event,
struct machine *machine,
struct event_format *event __maybe_unused,
struct perf_sample *sample)
@@ -1419,11 +1388,11 @@ map_switch_event(struct trace_switch_event *switch_event,

BUG_ON(this_cpu >= MAX_CPUS || this_cpu < 0);

- if (this_cpu > max_cpu)
- max_cpu = this_cpu;
+ if (this_cpu > sched->max_cpu)
+ sched->max_cpu = this_cpu;

- timestamp0 = cpu_last_switched[this_cpu];
- cpu_last_switched[this_cpu] = timestamp;
+ timestamp0 = sched->cpu_last_switched[this_cpu];
+ sched->cpu_last_switched[this_cpu] = timestamp;
if (timestamp0)
delta = timestamp - timestamp0;
else
@@ -1437,37 +1406,37 @@ map_switch_event(struct trace_switch_event *switch_event,
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;
+ sched->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;
+ sched_in->shortname[0] = sched->next_shortname1;
+ sched_in->shortname[1] = sched->next_shortname2;

- if (next_shortname1 < 'Z') {
- next_shortname1++;
+ if (sched->next_shortname1 < 'Z') {
+ sched->next_shortname1++;
} else {
- next_shortname1='A';
- if (next_shortname2 < '9') {
- next_shortname2++;
+ sched->next_shortname1='A';
+ if (sched->next_shortname2 < '9') {
+ sched->next_shortname2++;
} else {
- next_shortname2='0';
+ sched->next_shortname2='0';
}
}
new_shortname = 1;
}

- for (cpu = 0; cpu <= max_cpu; cpu++) {
+ for (cpu = 0; cpu <= sched->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);
+ if (sched->curr_thread[cpu]) {
+ if (sched->curr_thread[cpu]->pid)
+ printf("%2s ", sched->curr_thread[cpu]->shortname);
else
printf(". ");
} else
@@ -1485,11 +1454,12 @@ map_switch_event(struct trace_switch_event *switch_event,
return 0;
}

-static int process_sched_switch_event(struct perf_tool *tool __maybe_unused,
+static int process_sched_switch_event(struct perf_tool *tool,
struct event_format *event,
struct perf_sample *sample,
struct machine *machine)
{
+ struct perf_sched *sched = container_of(tool, struct perf_sched, tool);
int this_cpu = sample->cpu, err = 0;
void *data = sample->raw_data;
struct trace_switch_event switch_event;
@@ -1504,26 +1474,27 @@ static int process_sched_switch_event(struct perf_tool *tool __maybe_unused,
FILL_FIELD(switch_event, next_pid, event, data);
FILL_FIELD(switch_event, next_prio, event, data);

- if (curr_pid[this_cpu] != (u32)-1) {
+ if (sched->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 (sched->curr_pid[this_cpu] != switch_event.prev_pid)
+ sched->nr_context_switch_bugs++;
}
- if (trace_handler->switch_event)
- err = trace_handler->switch_event(&switch_event, machine, event, sample);
+ if (sched->tp_handler->switch_event)
+ err = sched->tp_handler->switch_event(sched, &switch_event, machine, event, sample);

- curr_pid[this_cpu] = switch_event.next_pid;
+ sched->curr_pid[this_cpu] = switch_event.next_pid;
return err;
}

-static int process_sched_runtime_event(struct perf_tool *tool __maybe_unused,
+static int process_sched_runtime_event(struct perf_tool *tool,
struct event_format *event,
struct perf_sample *sample,
struct machine *machine)
{
+ struct perf_sched *sched = container_of(tool, struct perf_sched, tool);
void *data = sample->raw_data;
struct trace_runtime_event runtime_event;
int err = 0;
@@ -1533,17 +1504,18 @@ static int process_sched_runtime_event(struct perf_tool *tool __maybe_unused,
FILL_FIELD(runtime_event, runtime, event, data);
FILL_FIELD(runtime_event, vruntime, event, data);

- if (trace_handler->runtime_event)
- err = trace_handler->runtime_event(&runtime_event, machine, sample);
+ if (sched->tp_handler->runtime_event)
+ err = sched->tp_handler->runtime_event(sched, &runtime_event, machine, sample);

return err;
}

-static int process_sched_fork_event(struct perf_tool *tool __maybe_unused,
+static int process_sched_fork_event(struct perf_tool *tool,
struct event_format *event,
struct perf_sample *sample,
struct machine *machine __maybe_unused)
{
+ struct perf_sched *sched = container_of(tool, struct perf_sched, tool);
void *data = sample->raw_data;
struct trace_fork_event fork_event;
int err = 0;
@@ -1555,8 +1527,8 @@ static int process_sched_fork_event(struct perf_tool *tool __maybe_unused,
FILL_ARRAY(fork_event, child_comm, event, data);
FILL_FIELD(fork_event, child_pid, event, data);

- if (trace_handler->fork_event)
- err = trace_handler->fork_event(&fork_event, event);
+ if (sched->tp_handler->fork_event)
+ err = sched->tp_handler->fork_event(sched, &fork_event, event);

return err;
}
@@ -1572,11 +1544,12 @@ static int process_sched_exit_event(struct perf_tool *tool __maybe_unused,
return 0;
}

-static int process_sched_migrate_task_event(struct perf_tool *tool __maybe_unused,
+static int process_sched_migrate_task_event(struct perf_tool *tool,
struct event_format *event,
struct perf_sample *sample,
struct machine *machine)
{
+ struct perf_sched *sched = container_of(tool, struct perf_sched, tool);
void *data = sample->raw_data;
struct trace_migrate_task_event migrate_task_event;
int err = 0;
@@ -1588,8 +1561,8 @@ static int process_sched_migrate_task_event(struct perf_tool *tool __maybe_unuse
FILL_FIELD(migrate_task_event, prio, event, data);
FILL_FIELD(migrate_task_event, cpu, event, data);

- if (trace_handler->migrate_task_event)
- err = trace_handler->migrate_task_event(&migrate_task_event, machine, sample);
+ if (sched->tp_handler->migrate_task_event)
+ err = sched->tp_handler->migrate_task_event(sched, &migrate_task_event, machine, sample);

return err;
}
@@ -1625,15 +1598,8 @@ static int perf_sched__process_tracepoint_sample(struct perf_tool *tool __maybe_
return err;
}

-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 int read_events(bool destroy, struct perf_session **psession)
+static int perf_sched__read_events(struct perf_sched *sched, bool destroy,
+ struct perf_session **psession)
{
const struct perf_evsel_str_handler handlers[] = {
{ "sched:sched_switch", process_sched_switch_event, },
@@ -1646,7 +1612,7 @@ static int read_events(bool destroy, struct perf_session **psession)
};
struct perf_session *session;

- session = perf_session__new(input_name, O_RDONLY, 0, false, &perf_sched);
+ session = perf_session__new(sched->input_name, O_RDONLY, 0, false, &sched->tool);
if (session == NULL) {
pr_debug("No Memory for session\n");
return -1;
@@ -1656,15 +1622,15 @@ static int read_events(bool destroy, struct perf_session **psession)
goto out_delete;

if (perf_session__has_traces(session, "record -R")) {
- int err = perf_session__process_events(session, &perf_sched);
+ int err = perf_session__process_events(session, &sched->tool);
if (err) {
pr_err("Failed to process events, error %d", err);
goto out_delete;
}

- 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];
+ sched->nr_events = session->hists.stats.nr_events[0];
+ sched->nr_lost_events = session->hists.stats.total_lost;
+ sched->nr_lost_chunks = session->hists.stats.nr_events[PERF_RECORD_LOST];
}

if (destroy)
@@ -1680,213 +1646,158 @@ out_delete:
return -1;
}

-static void print_bad_events(void)
+static void print_bad_events(struct perf_sched *sched)
{
- if (nr_unordered_timestamps && nr_timestamps) {
+ if (sched->nr_unordered_timestamps && sched->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);
+ (double)sched->nr_unordered_timestamps/(double)sched->nr_timestamps*100.0,
+ sched->nr_unordered_timestamps, sched->nr_timestamps);
}
- if (nr_lost_events && nr_events) {
+ if (sched->nr_lost_events && sched->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);
+ (double)sched->nr_lost_events/(double)sched->nr_events * 100.0,
+ sched->nr_lost_events, sched->nr_events, sched->nr_lost_chunks);
}
- if (nr_state_machine_bugs && nr_timestamps) {
+ if (sched->nr_state_machine_bugs && sched->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)
+ (double)sched->nr_state_machine_bugs/(double)sched->nr_timestamps*100.0,
+ sched->nr_state_machine_bugs, sched->nr_timestamps);
+ if (sched->nr_lost_events)
printf(" (due to lost events?)");
printf("\n");
}
- if (nr_context_switch_bugs && nr_timestamps) {
+ if (sched->nr_context_switch_bugs && sched->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)
+ (double)sched->nr_context_switch_bugs/(double)sched->nr_timestamps*100.0,
+ sched->nr_context_switch_bugs, sched->nr_timestamps);
+ if (sched->nr_lost_events)
printf(" (due to lost events?)");
printf("\n");
}
}

-static int __cmd_lat(void)
+static int perf_sched__lat(struct perf_sched *sched)
{
struct rb_node *next;
struct perf_session *session;

setup_pager();
- if (read_events(false, &session))
+ if (perf_sched__read_events(sched, false, &session))
return -1;
- sort_lat();
+ perf_sched__sort_lat(sched);

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);
+ next = rb_first(&sched->sorted_atom_root);

while (next) {
struct work_atoms *work_list;

work_list = rb_entry(next, struct work_atoms, node);
- output_lat_thread(work_list);
+ output_lat_thread(sched, work_list);
next = rb_next(next);
}

printf(" -----------------------------------------------------------------------------------------\n");
printf(" TOTAL: |%11.3f ms |%9" PRIu64 " |\n",
- (double)all_runtime/1e6, all_count);
+ (double)sched->all_runtime / 1e6, sched->all_count);

printf(" ---------------------------------------------------\n");

- print_bad_events();
+ print_bad_events(sched);
printf("\n");

perf_session__delete(session);
return 0;
}

-static struct trace_sched_handler map_ops = {
- .wakeup_event = NULL,
- .switch_event = map_switch_event,
- .runtime_event = NULL,
- .fork_event = NULL,
-};
-
-static int __cmd_map(void)
+static int perf_sched__map(struct perf_sched *sched)
{
- max_cpu = sysconf(_SC_NPROCESSORS_CONF);
+ sched->max_cpu = sysconf(_SC_NPROCESSORS_CONF);

setup_pager();
- if (read_events(true, NULL))
+ if (perf_sched__read_events(sched, true, NULL))
return -1;
- print_bad_events();
+ print_bad_events(sched);
return 0;
}

-static int __cmd_replay(void)
+static int perf_sched__replay(struct perf_sched *sched)
{
unsigned long i;

- calibrate_run_measurement_overhead();
- calibrate_sleep_measurement_overhead();
+ calibrate_run_measurement_overhead(sched);
+ calibrate_sleep_measurement_overhead(sched);

- test_calibrations();
+ test_calibrations(sched);

- if (read_events(true, NULL))
+ if (perf_sched__read_events(sched, true, NULL))
return -1;

- 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);
+ printf("nr_run_events: %ld\n", sched->nr_run_events);
+ printf("nr_sleep_events: %ld\n", sched->nr_sleep_events);
+ printf("nr_wakeup_events: %ld\n", sched->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)
+ if (sched->targetless_wakeups)
+ printf("target-less wakeups: %ld\n", sched->targetless_wakeups);
+ if (sched->multitarget_wakeups)
+ printf("multi-target wakeups: %ld\n", sched->multitarget_wakeups);
+ if (sched->nr_run_events_optimized)
printf("run atoms optimized: %ld\n",
- nr_run_events_optimized);
+ sched->nr_run_events_optimized);

- print_task_traces();
- add_cross_task_wakeups();
+ print_task_traces(sched);
+ add_cross_task_wakeups(sched);

- create_tasks();
+ create_tasks(sched);
printf("------------------------------------------------------------\n");
- for (i = 0; i < replay_repeat; i++)
- run_one_test();
+ for (i = 0; i < sched->replay_repeat; i++)
+ run_one_test(sched);

return 0;
}

-
-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)
+static void setup_sorting(struct perf_sched *sched, const struct option *options,
+ const char * const usage_msg[])
{
- char *tmp, *tok, *str = strdup(sort_order);
+ char *tmp, *tok, *str = strdup(sched->sort_order);

for (tok = strtok_r(str, ", ", &tmp);
tok; tok = strtok_r(NULL, ", ", &tmp)) {
- if (sort_dimension__add(tok, &sort_list) < 0) {
+ if (sort_dimension__add(tok, &sched->sort_list) < 0) {
error("Unknown --sort key: `%s'", tok);
- usage_with_options(latency_usage, latency_options);
+ usage_with_options(usage_msg, options);
}
}

free(str);

- sort_dimension__add("pid", &cmp_pid);
+ sort_dimension__add("pid", &sched->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;
+ const char * const 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",
+ };

rec_argc = ARRAY_SIZE(record_args) + argc - 1;
rec_argv = calloc(rec_argc + 1, sizeof(char *));
@@ -1907,6 +1818,83 @@ static int __cmd_record(int argc, const char **argv)

int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused)
{
+ const char default_sort_order[] = "avg, max, switch, runtime";
+ struct perf_sched sched = {
+ .tool = {
+ .sample = perf_sched__process_tracepoint_sample,
+ .comm = perf_event__process_comm,
+ .lost = perf_event__process_lost,
+ .fork = perf_event__process_task,
+ .ordered_samples = true,
+ },
+ .cmp_pid = LIST_HEAD_INIT(sched.cmp_pid),
+ .sort_list = LIST_HEAD_INIT(sched.sort_list),
+ .start_work_mutex = PTHREAD_MUTEX_INITIALIZER,
+ .work_done_wait_mutex = PTHREAD_MUTEX_INITIALIZER,
+ .curr_pid = { [0 ... MAX_CPUS - 1] = -1 },
+ .sort_order = default_sort_order,
+ .replay_repeat = 10,
+ .profile_cpu = -1,
+ .next_shortname1 = 'A',
+ .next_shortname2 = '0',
+ };
+ const struct option latency_options[] = {
+ OPT_STRING('s', "sort", &sched.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", &sched.profile_cpu,
+ "CPU to profile on"),
+ OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
+ "dump raw trace in ASCII"),
+ OPT_END()
+ };
+ const struct option replay_options[] = {
+ OPT_UINTEGER('r', "repeat", &sched.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()
+ };
+ const struct option sched_options[] = {
+ OPT_STRING('i', "input", &sched.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()
+ };
+ const char * const latency_usage[] = {
+ "perf sched latency [<options>]",
+ NULL
+ };
+ const char * const replay_usage[] = {
+ "perf sched replay [<options>]",
+ NULL
+ };
+ const char * const sched_usage[] = {
+ "perf sched [<options>] {record|latency|map|replay|script}",
+ NULL
+ };
+ 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,
+ };
+ struct trace_sched_handler map_ops = {
+ .switch_event = map_switch_event,
+ };
+ struct trace_sched_handler replay_ops = {
+ .wakeup_event = replay_wakeup_event,
+ .switch_event = replay_switch_event,
+ .fork_event = replay_fork_event,
+ };
+
argc = parse_options(argc, argv, sched_options, sched_usage,
PARSE_OPT_STOP_AT_NON_OPTION);
if (!argc)
@@ -1922,26 +1910,26 @@ int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused)
if (!strncmp(argv[0], "rec", 3)) {
return __cmd_record(argc, argv);
} else if (!strncmp(argv[0], "lat", 3)) {
- trace_handler = &lat_ops;
+ sched.tp_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();
- return __cmd_lat();
+ setup_sorting(&sched, latency_options, latency_usage);
+ return perf_sched__lat(&sched);
} else if (!strcmp(argv[0], "map")) {
- trace_handler = &map_ops;
- setup_sorting();
- return __cmd_map();
+ sched.tp_handler = &map_ops;
+ setup_sorting(&sched, latency_options, latency_usage);
+ return perf_sched__map(&sched);
} else if (!strncmp(argv[0], "rep", 3)) {
- trace_handler = &replay_ops;
+ sched.tp_handler = &replay_ops;
if (argc) {
argc = parse_options(argc, argv, replay_options, replay_usage, 0);
if (argc)
usage_with_options(replay_usage, replay_options);
}
- return __cmd_replay();
+ return perf_sched__replay(&sched);
} else {
usage_with_options(sched_usage, sched_options);
}
--
1.7.9.2.358.g22243


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