[PATCH RESEND v1 2/3] perf report: extend raw dump (-D) out with switch out event type

[Alexey Budankov]

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
.  :  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
.  :  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 
---
 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";
 
if (event->header.type == PERF_RECORD_SWITCH)
return fprintf(fp, " %s\n", in_out);

[PATCH RESEND v1 2/3] perf report: extend raw dump (-D) out with switch out event type

[Alexey Budankov]

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
.  :  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
.  :  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 
---
 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";
 
if (event->header.type == PERF_RECORD_SWITCH)
return fprintf(fp, " %s\n", in_out);