Add a field 'min_timestamp' in struct ordered_samples to record the minimial
timestamp of the samples in ordered_samples->samples.
Cc: David Ahern <dsah...@gmail.com>
Cc: Peter Zijlstra <a.p.zijls...@chello.nl>
Cc: Paul Mackerras <pau...@samba.org>
Cc: Ingo Molnar <mi...@redhat.com>
Cc: Arnaldo Carvalho de Melo <a...@ghostprotocols.net>
Cc: Arjan van de Ven <ar...@linux.intel.com>
Cc: Namhyung Kim <namhy...@gmail.com>
Cc: Yanmin Zhang <yanmin.zh...@intel.com>
Cc: Wu Fengguang <fengguang...@intel.com>
Cc: Mike Galbraith <efa...@gmx.de>
Cc: Andrew Morton <a...@linux-foundation.org>
Signed-off-by: Chenggang Qin <chenggang....@taobao.com>
---
tools/perf/util/session.c | 3 +++
tools/perf/util/session.h | 1 +
2 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 193bb6a..4e9dd66 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -708,6 +708,9 @@ int perf_session_queue_event(struct perf_session *s, union
perf_event *event,
new->file_offset = file_offset;
new->event = event;
+ if (list_empty(&os->samples) || os->min_timestamp > timestamp)
+ os->min_timestamp = timestamp;
+
__queue_event(new, s);
return 0;
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index c9a6c27..7d411b9 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -18,6 +18,7 @@ struct ordered_samples {
u64 last_flush;
u64 next_flush;
u64 max_timestamp;
+ u64 min_timestamp;
struct list_head samples;
struct list_head sample_cache;
struct list_head to_free;
--
1.7.8.rc2.5.g815b
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