From: Alexey Budankov <alexey.budankov@linux.intel.com>
To: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
Andi Kleen <ak@linux.intel.com>
Subject: [PATCH v1 2/3] perf report: extend raw dump (-D) out with switch out event type
Date: Thu, 22 Mar 2018 19:13:01 +0300 [thread overview]
Message-ID: <8cdb0aa4-5b99-c692-49c2-c615729afe2b@linux.intel.com> (raw)
In-Reply-To: <713750a0-7cc1-0a27-7253-12ff4f3c9a8d@linux.intel.com>
Print additional 'yield' tag for PERF_RECORD_SWITCH[_CPU_WIDE] OUT records when
event header misc field contains PERF_RECORD_MISC_SWITCH_OUT_YIELD bit set
designating synchronization context switch out event:
perf report -D -i system-wide.perf | grep _SWITCH:
1 113807080924003 0x26db26 [0x28]: PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: 20495/20495
1 113807080925644 0x26db4e [0x28]: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 31479/31479
1 113807080937266 0x26db76 [0x28]: PERF_RECORD_SWITCH_CPU_WIDE OUT yield next pid/tid: 16/16
1 113807080938445 0x26db9e [0x28]: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 20495/20495
1 113807080945455 0x26dbc6 [0x28]: PERF_RECORD_SWITCH_CPU_WIDE OUT yield next pid/tid: 20495/20495
Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
---
tools/perf/util/event.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index f0a6cbd033cc..324f44f02e66 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -1421,7 +1421,9 @@ size_t perf_event__fprintf_itrace_start(union perf_event *event, FILE *fp)
size_t perf_event__fprintf_switch(union perf_event *event, FILE *fp)
{
bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT;
- const char *in_out = out ? "OUT" : "IN ";
+ const char *in_out = !out ? "IN " :
+ !(event->header.misc & PERF_RECORD_MISC_SWITCH_OUT_YIELD) ?
+ "OUT " : "OUT yield";
if (event->header.type == PERF_RECORD_SWITCH)
return fprintf(fp, " %s\n", in_out);
next prev parent reply other threads:[~2018-03-22 16:13 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-22 16:08 [PATCH v2 0/3] perf/core: expose thread context switch out event type to user space Alexey Budankov
2018-03-22 16:11 ` [PATCH v2 1/3] perf/core: store context switch out type into Perf trace Alexey Budankov
2018-03-22 16:13 ` Alexey Budankov [this message]
2018-03-22 16:16 ` [PATCH v2 3/3] perf script: extend misc field decoding with switch out event type Alexey Budankov
2018-03-23 9:24 ` [PATCH v2 0/3] perf/core: expose thread context switch out event type to user space Jiri Olsa
2018-03-23 18:05 ` Peter Zijlstra
2018-03-23 20:38 ` Alexey Budankov
-- strict thread matches above, loose matches on Subject: below --
2018-03-20 12:33 [PATCH v1 " Alexey Budankov
2018-03-20 13:05 ` [PATCH v1 2/3] perf report: extend raw dump (-D) out with switch out event type Alexey Budankov
2018-03-21 16:41 ` Jiri Olsa
2018-03-21 17:12 ` Alexey Budankov
2018-03-22 16:17 ` Alexey Budankov
2018-03-05 11:35 [PATCH v1 0/3] perf: expose thread context switch out event type to user space Alexey Budankov
2018-03-05 11:38 ` [PATCH v1 2/3] perf report: extend raw dump (-D) out with switch out event type Alexey Budankov
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