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| author |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-07-14 08:34:33 +0000 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-07-15 13:38:06 -0300 |
| commit | 32a951b4fd6bbe60ef5d65930b1712321e241b27 (patch) | |
| tree | 6900abcdecfb044b93de799a1f7fcc01e9893ad4 /tools/perf/util/evsel.h | |
| parent | tools lib api fs: Use base 0 in filename__read_ull (diff) | |
| download | linux-dev-32a951b4fd6bbe60ef5d65930b1712321e241b27.tar.xz linux-dev-32a951b4fd6bbe60ef5d65930b1712321e241b27.zip | |
perf evlist: Drop redundant evsel->overwrite indicator
evsel->overwrite indicator means an event should be put into
overwritable ring buffer. In current implementation, it equals to
evsel->attr.write_backward. To reduce compliexity, remove
evsel->overwrite, use evsel->attr.write_backward instead.
In addition, in __perf_evsel__open(), if kernel doesn't support
write_backward and user explicitly set it in evsel, don't fallback
like other missing feature, since it is meaningless to fall back to
a forward ring buffer in this case: we are unable to stably read
from an forward overwritable ring buffer.
Cc: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nilay Vaish <nilayvaish@gmail.com>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1468485287-33422-2-git-send-email-wangnan0@huawei.com
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/evsel.h')
| -rw-r--r-- | tools/perf/util/evsel.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index d73391e8740e..e60cbfc2cd35 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -114,7 +114,6 @@ struct perf_evsel { bool tracking; bool per_pkg; bool precise_max; - bool overwrite; /* parse modifier helper */ int exclude_GH; int nr_members; |