[PATCH 07/12] libperf: Add lost_samples_event to perf/event.h

Jiri Olsa
2019-08-25T18:18:21Z

Moving lost_samples_event event definition into libperf's event.h
header include.

In order to keep libperf simple, we switch 'u64/u32/u16/u8'
types used events to their generic '__u*' versions.

Perf added 'u*' types mainly to ease up printing __u64 values
as stated in the linux/types.h comment:

/*
* We define u64 as uint64_t for every architecture
* so that we can print it with "%"PRIx64 without getting warnings.
*
* typedef __u64 u64;
* typedef __s64 s64;
*/

Adding and using new PRI_lu64 and PRI_lx64 macros to be used for
that. Using extra '_' to ease up the reading and differentiate
them from standard PRI*64 macros.

Link: http://lkml.kernel.org/n/tip-m3fg0vd8lo1wl8cy828agzbo@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
tools/perf/lib/include/perf/event.h | 5 +++++
tools/perf/util/event.h | 5 -----
tools/perf/util/machine.c | 2 +-
3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/tools/perf/lib/include/perf/event.h b/tools/perf/lib/include/perf/event.h
index 6c25d0adbe6d..3bd2727ac5f9 100644
--- a/tools/perf/lib/include/perf/event.h
+++ b/tools/perf/lib/include/perf/event.h
@@ -56,4 +56,9 @@ struct lost_event {
__u64 lost;
};

+struct lost_samples_event {
+ struct perf_event_header header;
+ __u64 lost;
+};
+
#endif /* __LIBPERF_EVENT_H */
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index cc9cc38f0bf7..1bf44b73fbbf 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -16,11 +16,6 @@
#define PRI_lu64 "l" PRIu64
#define PRI_lx64 "l" PRIx64

-struct lost_samples_event {
- struct perf_event_header header;
- u64 lost;
-};
-
/*
* PERF_FORMAT_ENABLED | PERF_FORMAT_RUNNING | PERF_FORMAT_ID
*/
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index f61349d1d0d4..9094e86e4db8 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -650,7 +650,7 @@ int machine__process_lost_event(struct machine *machine __maybe_unused,
int machine__process_lost_samples_event(struct machine *machine __maybe_unused,
union perf_event *event, struct perf_sample *sample)
{
- dump_printf(": id:%" PRIu64 ": lost samples :%" PRIu64 "\n",
+ dump_printf(": id:%" PRIu64 ": lost samples :%" PRI_lu64 "\n",
sample->id, event->lost_samples.lost);
return 0;
}
--
2.21.0