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| author |   Namhyung Kim <namhyung@kernel.org> | 2015-01-30 11:33:28 +0900 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-02-06 11:46:35 +0100 |
| commit | 63d3c6f3835d011c783c606c8a1583b041f579aa (patch) | |
| tree | 265db940d9911b060c88e743ef1b86c6a103f77e /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | perf test: Fix dso cache testcase (diff) | |
| download | linux-dev-63d3c6f3835d011c783c606c8a1583b041f579aa.tar.xz linux-dev-63d3c6f3835d011c783c606c8a1583b041f579aa.zip | |
perf tests: Do not rely on dso__data_read_offset() to open dso
Do not rely on dso__data_read_offset() will always call dso__data_fd()
internally. With multi-thread support, accessing a fd will be protected
by a lock and it'll cause a huge contention. It can be avoided since we
can skip reading from file if there's a data in the dso cache.
If one needs to call the dso__data_read_offset(), [s]he also needs to
call dso__data_fd() (or set dso->binary_type at least) first like the
dwarf unwind code does.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1422585209-32742-2-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions