On 21.03.2018 19:41, Jiri Olsa wrote: > On Tue, Mar 20, 2018 at 04:05:17PM +0300, Alexey Budankov wrote: >> 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: >> >> 0x1b9c50 [0x30]: event: 15 >> . >> . ... raw event: size 48 bytes >> . 0000: 0f 00 00 00 00 20 30 00 01 1e 00 00 01 1e 00 00 ..... 0......... >> . 0010: 00 00 00 00 00 00 00 00 85 ae d4 e3 3e 0e 00 00 ............>... >> . 0020: 54 00 00 00 00 00 00 00 05 00 00 00 00 00 00 00 T............... >> >> 5 15663273127557 0x1b9c50 [0x30]: PERF_RECORD_SWITCH_CPU_WIDE OUT next >> pid/tid: 7681/7681 >> >> 0x2646c0 [0x30]: event: 15 >> . >> . ... raw event: size 48 bytes >> . 0000: 0f 00 00 00 00 60 30 00 00 00 00 00 00 00 00 00 .....`0......... >> . 0010: 00 1e 00 00 00 1e 00 00 29 1e d5 e3 3e 0e 00 00 ........)...>... >> . 0020: 56 00 00 00 00 00 00 00 07 00 00 00 00 00 00 00 V............... >> >> 7 15663273156137 0x2646c0 [0x30]: PERF_RECORD_SWITCH_CPU_WIDE OUT yield >> next pid/tid: 0/0 >> >> Signed-off-by: Alexey Budankov <[email protected]> >> --- >> 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..af5a85d56446 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"; > > I'm getting: > > rcu_sched 9 [004] Sy 1303.392349: PERF_RECORD_SWITCH_CPU_WIDE > OUT yield next pid/tid: 0/0 > swapper 0 [004] 1303.392350: PERF_RECORD_SWITCH_CPU_WIDE > IN prev pid/tid: 9/9 > > could you plase format the 'OUT yield' line so the rest of the > fields are in line with 'IN' and 'OUT' lines like: > > rcu_sched 9 [004] Sy 1303.392349: PERF_RECORD_SWITCH_CPU_WIDE > OUT yield next pid/tid: 0/0 > swapper 0 [004] 1303.392350: PERF_RECORD_SWITCH_CPU_WIDE > IN prev pid/tid: 9/9
Please find update in v2. Thanks, Alexey > > thanks, > jirka >
