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Diffstat (limited to 'tools/perf/builtin-sched.c')
-rw-r--r--tools/perf/builtin-sched.c37
1 files changed, 29 insertions, 8 deletions
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index b94cf0de715a..39996c53995a 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -22,16 +22,21 @@
#include "util/debug.h"
+#include <linux/kernel.h>
#include <linux/log2.h>
#include <sys/prctl.h>
#include <sys/resource.h>
+#include <inttypes.h>
+#include <errno.h>
#include <semaphore.h>
#include <pthread.h>
#include <math.h>
#include <api/fs/fs.h>
#include <linux/time64.h>
+#include "sane_ctype.h"
+
#define PR_SET_NAME 15 /* Set process name */
#define MAX_CPUS 4096
#define COMM_LEN 20
@@ -221,6 +226,7 @@ struct perf_sched {
unsigned int max_stack;
bool show_cpu_visual;
bool show_wakeups;
+ bool show_next;
bool show_migrations;
bool show_state;
u64 skipped_samples;
@@ -1897,14 +1903,18 @@ static char task_state_char(struct thread *thread, int state)
}
static void timehist_print_sample(struct perf_sched *sched,
+ struct perf_evsel *evsel,
struct perf_sample *sample,
struct addr_location *al,
struct thread *thread,
u64 t, int state)
{
struct thread_runtime *tr = thread__priv(thread);
+ const char *next_comm = perf_evsel__strval(evsel, sample, "next_comm");
+ const u32 next_pid = perf_evsel__intval(evsel, sample, "next_pid");
u32 max_cpus = sched->max_cpu + 1;
char tstr[64];
+ char nstr[30];
u64 wait_time;
timestamp__scnprintf_usec(t, tstr, sizeof(tstr));
@@ -1937,7 +1947,12 @@ static void timehist_print_sample(struct perf_sched *sched,
if (sched->show_state)
printf(" %5c ", task_state_char(thread, state));
- if (sched->show_wakeups)
+ if (sched->show_next) {
+ snprintf(nstr, sizeof(nstr), "next: %s[%d]", next_comm, next_pid);
+ printf(" %-*s", comm_width, nstr);
+ }
+
+ if (sched->show_wakeups && !sched->show_next)
printf(" %-*s", comm_width, "");
if (thread->tid == 0)
@@ -2531,7 +2546,7 @@ static int timehist_sched_change_event(struct perf_tool *tool,
}
if (!sched->summary_only)
- timehist_print_sample(sched, sample, &al, thread, t, state);
+ timehist_print_sample(sched, evsel, sample, &al, thread, t, state);
out:
if (sched->hist_time.start == 0 && t >= ptime->start)
@@ -3262,16 +3277,17 @@ static int __cmd_record(int argc, const char **argv)
BUG_ON(i != rec_argc);
- return cmd_record(i, rec_argv, NULL);
+ return cmd_record(i, rec_argv);
}
-int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused)
+int cmd_sched(int argc, const char **argv)
{
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,
+ .namespaces = perf_event__process_namespaces,
.lost = perf_event__process_lost,
.fork = perf_sched__process_fork_event,
.ordered_events = true,
@@ -3340,6 +3356,7 @@ int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused)
OPT_BOOLEAN('S', "with-summary", &sched.summary,
"Show all syscalls and summary with statistics"),
OPT_BOOLEAN('w', "wakeups", &sched.show_wakeups, "Show wakeup events"),
+ OPT_BOOLEAN('n', "next", &sched.show_next, "Show next task"),
OPT_BOOLEAN('M', "migrations", &sched.show_migrations, "Show migration events"),
OPT_BOOLEAN('V', "cpu-visual", &sched.show_cpu_visual, "Add CPU visual"),
OPT_BOOLEAN('I', "idle-hist", &sched.idle_hist, "Show idle events only"),
@@ -3400,7 +3417,7 @@ int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused)
* Aliased to 'perf script' for now:
*/
if (!strcmp(argv[0], "script"))
- return cmd_script(argc, argv, prefix);
+ return cmd_script(argc, argv);
if (!strncmp(argv[0], "rec", 3)) {
return __cmd_record(argc, argv);
@@ -3437,10 +3454,14 @@ int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused)
if (argc)
usage_with_options(timehist_usage, timehist_options);
}
- if (sched.show_wakeups && sched.summary_only) {
- pr_err(" Error: -s and -w are mutually exclusive.\n");
+ if ((sched.show_wakeups || sched.show_next) &&
+ sched.summary_only) {
+ pr_err(" Error: -s and -[n|w] are mutually exclusive.\n");
parse_options_usage(timehist_usage, timehist_options, "s", true);
- parse_options_usage(NULL, timehist_options, "w", true);
+ if (sched.show_wakeups)
+ parse_options_usage(NULL, timehist_options, "w", true);
+ if (sched.show_next)
+ parse_options_usage(NULL, timehist_options, "n", true);
return -EINVAL;
}