diff options
author | Ingo Molnar <mingo@kernel.org> | 2017-05-03 19:28:27 +0200 |
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committer | Ingo Molnar <mingo@kernel.org> | 2017-05-03 19:28:27 +0200 |
commit | 12c1c2fd780a9a5581105fcb6f251466cf35af2a (patch) | |
tree | ce613b7dfdb64d93a26765cdcf20b0f5deab9ef7 /tools/perf/builtin-sched.c | |
parent | 33b88e708e7dfa58dc896da2a98f5719d2eb315c (diff) | |
parent | 4341ec6b3db4c3e903d6c44958722918baec1e59 (diff) | |
download | linux-12c1c2fd780a9a5581105fcb6f251466cf35af2a.tar.bz2 |
Merge tag 'perf-core-for-mingo-4.12-20170503' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
Fixes:
- Support setting probes in versioned user space symbols, such as
pthread_create@@GLIBC_2.1, picking the default one, more work
needed to make it possible to set it on the other versions, as
the 'perf probe' syntax already uses @ for other purposes.
(Paul Clarke)
- Do not special case address zero as an error for routines that
return addresses (symbol lookup), instead use the return as the
success/error indication and pass a pointer to return the address,
fixing 'perf test vmlinux' (the one that compares address between
vmlinux and kallsyms) on s/390, where the '_text' address is equal
to zero (Arnaldo Carvalho de Melo)
Infrastructure changes:
- More header sanitization, moving stuff out of util.h into
more appropriate headers and objects and sometimes creating
new ones (Arnaldo Carvalho de Melo)
- Refactor a duplicated code for obtaining config file name (Taeung Song)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/perf/builtin-sched.c')
-rw-r--r-- | tools/perf/builtin-sched.c | 37 |
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; } |