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-rw-r--r--tools/perf/builtin-sched.c243
1 files changed, 165 insertions, 78 deletions
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index 0215936696e..756fe62eb04 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -14,6 +14,9 @@
#include "util/trace-event.h"
#include <sys/types.h>
+
+#define MAX_CPUS 4096
+
static char const *input_name = "perf.data";
static int input;
static unsigned long page_size;
@@ -27,6 +30,8 @@ static struct thread *last_match;
static struct perf_header *header;
static u64 sample_type;
+static int replay_mode;
+
/*
* Scheduler benchmarks
@@ -677,6 +682,27 @@ 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_wakeup_event {
u32 size;
@@ -694,78 +720,79 @@ struct trace_wakeup_event {
u32 cpu;
};
-static void
-process_sched_wakeup_event(struct raw_event_sample *raw, struct event *event,
- int cpu __used, u64 timestamp __used, struct thread *thread __used)
-{
- struct task_desc *waker, *wakee;
- struct trace_wakeup_event wakeup_event;
+struct trace_fork_event {
+ u32 size;
- FILL_COMMON_FIELDS(wakeup_event, event, raw->data);
+ 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_sched_handler {
+ void (*switch_event)(struct trace_switch_event *,
+ struct event *,
+ int cpu,
+ u64 timestamp,
+ struct thread *thread);
+
+ void (*wakeup_event)(struct trace_wakeup_event *,
+ 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);
+};
- FILL_ARRAY(wakeup_event, comm, event, raw->data);
- FILL_FIELD(wakeup_event, pid, event, raw->data);
- FILL_FIELD(wakeup_event, prio, event, raw->data);
- FILL_FIELD(wakeup_event, success, event, raw->data);
- FILL_FIELD(wakeup_event, cpu, event, raw->data);
+static void
+replay_wakeup_event(struct trace_wakeup_event *wakeup_event,
+ struct event *event,
+ int cpu __used,
+ u64 timestamp __used,
+ struct thread *thread __used)
+{
+ struct task_desc *waker, *wakee;
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);
+ 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(wakeup_event->common_pid, "<unknown>");
+ wakee = register_pid(wakeup_event->pid, wakeup_event->comm);
add_sched_event_wakeup(waker, timestamp, wakee);
}
-struct trace_switch_event {
- u32 size;
-
- u16 common_type;
- u8 common_flags;
- u8 common_preempt_count;
- u32 common_pid;
- u32 common_tgid;
-
- char prev_comm[16];
- u32 prev_pid;
- u32 prev_prio;
- u64 prev_state;
- char next_comm[16];
- u32 next_pid;
- u32 next_prio;
-};
-
-#define MAX_CPUS 4096
-
-unsigned long cpu_last_switched[MAX_CPUS];
+static unsigned long cpu_last_switched[MAX_CPUS];
static void
-process_sched_switch_event(struct raw_event_sample *raw, struct event *event,
- int cpu __used, u64 timestamp __used, struct thread *thread __used)
+replay_switch_event(struct trace_switch_event *switch_event,
+ struct event *event,
+ int cpu,
+ u64 timestamp,
+ struct thread *thread __used)
{
- struct trace_switch_event switch_event;
struct task_desc *prev, *next;
u64 timestamp0;
s64 delta;
- FILL_COMMON_FIELDS(switch_event, event, raw->data);
-
- FILL_ARRAY(switch_event, prev_comm, event, raw->data);
- FILL_FIELD(switch_event, prev_pid, event, raw->data);
- FILL_FIELD(switch_event, prev_prio, event, raw->data);
- FILL_FIELD(switch_event, prev_state, event, raw->data);
- FILL_ARRAY(switch_event, next_comm, event, raw->data);
- FILL_FIELD(switch_event, next_pid, event, raw->data);
- FILL_FIELD(switch_event, next_prio, event, raw->data);
-
if (verbose)
printf("sched_switch event %p\n", event);
@@ -783,38 +810,94 @@ process_sched_switch_event(struct raw_event_sample *raw, struct event *event,
if (verbose) {
printf(" ... switch from %s/%d to %s/%d [ran %Ld nsecs]\n",
- switch_event.prev_comm, switch_event.prev_pid,
- switch_event.next_comm, switch_event.next_pid,
+ 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);
+ 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);
+ add_sched_event_sleep(prev, timestamp, switch_event->prev_state);
}
-struct trace_fork_event {
- u32 size;
- u16 common_type;
- u8 common_flags;
- u8 common_preempt_count;
- u32 common_pid;
- u32 common_tgid;
+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);
+}
- char parent_comm[16];
- u32 parent_pid;
- char child_comm[16];
- u32 child_pid;
+static struct trace_sched_handler replay_ops = {
+ .wakeup_event = replay_wakeup_event,
+ .switch_event = replay_switch_event,
+ .fork_event = replay_fork_event,
};
+
+static struct trace_sched_handler *trace_handler;
+
static void
-process_sched_fork_event(struct raw_event_sample *raw, struct event *event,
- int cpu __used, u64 timestamp __used, struct thread *thread __used)
+process_sched_wakeup_event(struct raw_event_sample *raw,
+ struct event *event,
+ int cpu __used,
+ u64 timestamp __used,
+ struct thread *thread __used)
+{
+ struct trace_wakeup_event wakeup_event;
+
+ FILL_COMMON_FIELDS(wakeup_event, event, raw->data);
+
+ FILL_ARRAY(wakeup_event, comm, event, raw->data);
+ FILL_FIELD(wakeup_event, pid, event, raw->data);
+ FILL_FIELD(wakeup_event, prio, event, raw->data);
+ FILL_FIELD(wakeup_event, success, event, raw->data);
+ FILL_FIELD(wakeup_event, cpu, event, raw->data);
+
+ trace_handler->wakeup_event(&wakeup_event, event, cpu, timestamp, thread);
+}
+
+static void
+process_sched_switch_event(struct raw_event_sample *raw,
+ struct event *event,
+ int cpu __used,
+ u64 timestamp __used,
+ struct thread *thread __used)
+{
+ struct trace_switch_event switch_event;
+
+ FILL_COMMON_FIELDS(switch_event, event, raw->data);
+
+ FILL_ARRAY(switch_event, prev_comm, event, raw->data);
+ FILL_FIELD(switch_event, prev_pid, event, raw->data);
+ FILL_FIELD(switch_event, prev_prio, event, raw->data);
+ FILL_FIELD(switch_event, prev_state, event, raw->data);
+ FILL_ARRAY(switch_event, next_comm, event, raw->data);
+ FILL_FIELD(switch_event, next_pid, event, raw->data);
+ FILL_FIELD(switch_event, next_prio, event, raw->data);
+
+ trace_handler->switch_event(&switch_event, event, cpu, timestamp, thread);
+}
+
+static void
+process_sched_fork_event(struct raw_event_sample *raw,
+ struct event *event,
+ int cpu __used,
+ u64 timestamp __used,
+ struct thread *thread __used)
{
struct trace_fork_event fork_event;
@@ -825,17 +908,14 @@ process_sched_fork_event(struct raw_event_sample *raw, struct event *event,
FILL_ARRAY(fork_event, child_comm, event, raw->data);
FILL_FIELD(fork_event, child_pid, event, raw->data);
- 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);
+ trace_handler->fork_event(&fork_event, event, cpu, timestamp, thread);
}
-static void process_sched_exit_event(struct event *event,
- int cpu __used, u64 timestamp __used, struct thread *thread __used)
+static void
+process_sched_exit_event(struct event *event,
+ int cpu __used,
+ u64 timestamp __used,
+ struct thread *thread __used)
{
if (verbose)
printf("sched_exit event %p\n", event);
@@ -1072,6 +1152,8 @@ static const char * const annotate_usage[] = {
static const struct option options[] = {
OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
"dump raw trace in ASCII"),
+ OPT_BOOLEAN('r', "replay", &replay_mode,
+ "replay sched behaviour from traces"),
OPT_BOOLEAN('v', "verbose", &verbose,
"be more verbose (show symbol address, etc)"),
OPT_END()
@@ -1096,6 +1178,11 @@ int cmd_sched(int argc, const char **argv, const char *prefix __used)
// setup_pager();
+ if (replay_mode)
+ trace_handler = &replay_ops;
+ else /* We may need a default subcommand */
+ die("Please select a sub command (-r)\n");
+
calibrate_run_measurement_overhead();
calibrate_sleep_measurement_overhead();
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-26 03:48:37 +0000