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perf evlist: Drop evlist->backward

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Now there's no real user of evlist->backward. Drop it. We are going to
use evlist->backward_mmap as a container for backward ring buffer.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: He Kuang <hekuang@huawei.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nilay Vaish <nilayvaish@gmail.com>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1468485287-33422-10-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Wang Nan 2016-07-14 08:34:41 +00:00 committed by Arnaldo Carvalho de Melo
parent 078c33862e
commit a0c6f451f9
3 changed files with 1 additions and 6 deletions
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1
tools/perf/tests/backward-ring-buffer.c
View file

@ -101,7 +101,6 @@ int test__backward_ring_buffer(int subtest __maybe_unused)
return TEST_FAIL;
}
evlist->backward = true;
err = perf_evlist__create_maps(evlist, &opts.target);
if (err < 0) {
pr_debug("Not enough memory to create thread/cpu maps\n");

5
tools/perf/util/evlist.c
View file

@ -44,7 +44,6 @@ void perf_evlist__init(struct perf_evlist *evlist, struct cpu_map *cpus,
perf_evlist__set_maps(evlist, cpus, threads);
fdarray__init(&evlist->pollfd, 64);
evlist->workload.pid = -1;
evlist->backward = false;
}
struct perf_evlist *perf_evlist__new(void)
@ -867,9 +866,7 @@ union perf_event *perf_evlist__mmap_read_backward(struct perf_evlist *evlist, in
union perf_event *perf_evlist__mmap_read(struct perf_evlist *evlist, int idx)
{
if (!evlist->backward)
return perf_evlist__mmap_read_forward(evlist, idx);
return perf_evlist__mmap_read_backward(evlist, idx);
return perf_evlist__mmap_read_forward(evlist, idx);
}
void perf_mmap__read_catchup(struct perf_mmap *md)

1
tools/perf/util/evlist.h
View file

@ -50,7 +50,6 @@ struct perf_evlist {
bool overwrite;
bool enabled;
bool has_user_cpus;
bool backward;
size_t mmap_len;
int id_pos;
int is_pos;