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Subject[PATCH V4 01/15] perf evlist: remove stale mmap read for backward
Date
From: Kan Liang <kan.liang@intel.com>

perf_evlist__mmap_read_catchup() and perf_evlist__mmap_read_backward()
are only for overwrite mode.
But they read the evlist->mmap buffer which is for non-overwrite mode.

It did not bring any serious problem yet, because there is no one use
it.

Remove the unused interfaces.

Acked-by: Wang Nan <wangnan0@huawei.com>
Signed-off-by: Kan Liang <kan.liang@intel.com>
---
tools/perf/util/evlist.c | 17 -----------------
tools/perf/util/evlist.h | 4 ----
2 files changed, 21 deletions(-)

diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index f0a5e09..cf0fd35 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -714,28 +714,11 @@ union perf_event *perf_evlist__mmap_read_forward(struct perf_evlist *evlist, int
return perf_mmap__read_forward(md);
}

-union perf_event *perf_evlist__mmap_read_backward(struct perf_evlist *evlist, int idx)
-{
- struct perf_mmap *md = &evlist->mmap[idx];
-
- /*
- * No need to check messup for backward ring buffer:
- * We can always read arbitrary long data from a backward
- * ring buffer unless we forget to pause it before reading.
- */
- return perf_mmap__read_backward(md);
-}
-
union perf_event *perf_evlist__mmap_read(struct perf_evlist *evlist, int idx)
{
return perf_evlist__mmap_read_forward(evlist, idx);
}

-void perf_evlist__mmap_read_catchup(struct perf_evlist *evlist, int idx)
-{
- perf_mmap__read_catchup(&evlist->mmap[idx]);
-}
-
void perf_evlist__mmap_consume(struct perf_evlist *evlist, int idx)
{
perf_mmap__consume(&evlist->mmap[idx], false);
diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index e7fbca6..bbf53b1 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -134,10 +134,6 @@ union perf_event *perf_evlist__mmap_read(struct perf_evlist *evlist, int idx);

union perf_event *perf_evlist__mmap_read_forward(struct perf_evlist *evlist,
int idx);
-union perf_event *perf_evlist__mmap_read_backward(struct perf_evlist *evlist,
- int idx);
-void perf_evlist__mmap_read_catchup(struct perf_evlist *evlist, int idx);
-
void perf_evlist__mmap_consume(struct perf_evlist *evlist, int idx);

int perf_evlist__open(struct perf_evlist *evlist);
--
2.5.5
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