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perf mmap: Simplify perf_mmap__read_init()

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It isn't necessary to pass the 'start', 'end' and 'overwrite' arguments
to perf_mmap__read_init().  The data is stored in the struct perf_mmap.

Discard the parameters.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1520350567-80082-8-git-send-email-kan.liang@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Kan Liang
2018-03-06 10:36:07 -05:00
committed by Arnaldo Carvalho de Melo
parent 0019dc87b9
commit b9bae2c841
17 changed files with 18 additions and 40 deletions
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tools/perf/tests/backward-ring-buffer.c
+1 -2
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@@ -33,9 +33,8 @@ static int count_samples(struct perf_evlist *evlist, int *sample_count,
for (i = 0; i < evlist->nr_mmaps; i++) {
struct perf_mmap *map = &evlist->overwrite_mmap[i];
union perf_event *event;
u64 start, end;
perf_mmap__read_init(map, true, &start, &end);
perf_mmap__read_init(map);
while ((event = perf_mmap__read_event(map)) != NULL) {
const u32 type = event->header.type;