| From | Jiri Olsa <> | Subject | [PATCH 36/48] perf tools: Add perf_mmap__read_tail function | Date | Thu, 13 Sep 2018 14:54:38 +0200 |
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It will be used in following patches.
Link: http://lkml.kernel.org/n/tip-4id1fjlu5ypfqnu9kvpo7l3z@git.kernel.org Signed-off-by: Jiri Olsa <jolsa@kernel.org> --- tools/perf/util/mmap.h | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/tools/perf/util/mmap.h b/tools/perf/util/mmap.h index bad05b12b9df..eb39d3f85b93 100644 --- a/tools/perf/util/mmap.h +++ b/tools/perf/util/mmap.h @@ -79,6 +79,13 @@ static inline u64 perf_mmap__read_head(struct perf_mmap *mm) return head; } +static inline u64 perf_mmap__read_tail(struct perf_mmap *md) +{ + struct perf_event_mmap_page *pc = md->base; + + return pc->data_tail; +} + static inline void perf_mmap__write_tail(struct perf_mmap *md, u64 tail) { struct perf_event_mmap_page *pc = md->base; -- 2.17.1
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