From 6ddf259da76cab6555c2086386f8bcd10bbb86d2 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Thu, 3 Sep 2009 12:00:22 +0200 Subject: [PATCH] perf trace: Sample timestamps as well Before: perf-21082 [013] 0.000000: sched_wakeup_new: task perf:21083 [120] success=1 [015] perf-21082 [013] 0.000000: sched_migrate_task: task perf:21082 [120] from: 13 to: 15 perf-21082 [013] 0.000000: sched_process_fork: parent perf:21082 child perf:21083 true-21083 [015] 0.000000: sched_wakeup: task migration/15:33 [0] success=1 [015] perf-21082 [013] 0.000000: sched_switch: task perf:21082 [120] (S) ==> swapper:0 [140] true-21083 [015] 0.000000: sched_switch: task perf:21083 [120] (R) ==> migration/15:33 [0] true-21083 [011] 0.000000: sched_process_exit: task true:21083 [120] After: perf-21082 [013] 14674.797613: sched_wakeup_new: task perf:21083 [120] success=1 [015] perf-21082 [013] 14674.797506: sched_migrate_task: task perf:21082 [120] from: 13 to: 15 perf-21082 [013] 14674.797610: sched_process_fork: parent perf:21082 child perf:21083 true-21083 [015] 14674.797725: sched_wakeup: task migration/15:33 [0] success=1 [015] perf-21082 [013] 14674.797722: sched_switch: task perf:21082 [120] (S) ==> swapper:0 [140] true-21083 [015] 14674.797729: sched_switch: task perf:21083 [120] (R) ==> migration/15:33 [0] true-21083 [011] 14674.798159: sched_process_exit: task true:21083 [120] Cc: Peter Zijlstra Cc: Mike Galbraith Cc: Paul Mackerras Cc: Arnaldo Carvalho de Melo Cc: Frederic Weisbecker LKML-Reference: Signed-off-by: Ingo Molnar --- tools/perf/builtin-record.c | 1 + tools/perf/builtin-trace.c | 8 +++++++- 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index ff93f8e..99a12fe 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -404,6 +404,7 @@ static void create_counter(int counter, int cpu, pid_t pid) attr->sample_type |= PERF_SAMPLE_CALLCHAIN; if (raw_samples) { + attr->sample_type |= PERF_SAMPLE_TIME; attr->sample_type |= PERF_SAMPLE_RAW; attr->sample_type |= PERF_SAMPLE_CPU; } diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index bbe4c44..d59bf8a 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -58,6 +58,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head) struct dso *dso = NULL; struct thread *thread; u64 ip = event->ip.ip; + u64 timestamp = -1; u32 cpu = -1; u64 period = 1; void *more_data = event->ip.__more_data; @@ -65,6 +66,11 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head) thread = threads__findnew(event->ip.pid, &threads, &last_match); + if (sample_type & PERF_SAMPLE_TIME) { + timestamp = *(u64 *)more_data; + more_data += sizeof(u64); + } + if (sample_type & PERF_SAMPLE_CPU) { cpu = *(u32 *)more_data; more_data += sizeof(u32); @@ -127,7 +133,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head) * field, although it should be the same than this perf * event pid */ - print_event(cpu, raw->data, raw->size, 0, thread->comm); + print_event(cpu, raw->data, raw->size, timestamp, thread->comm); } total += period; -- 1.8.2.3