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| author |   Jiri Olsa <jolsa@redhat.com> | 2014-01-07 13:47:23 +0100 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2014-02-18 09:34:47 -0300 |
| commit | b42dc32d4f91e4c0f34b628fdb012eb423da9e69 (patch) | |
| tree | e55922a9dd9352a2611a02aa4cda74d7875559d8 /tools/perf/util/unwind.c | |
| parent | perf tests x86: Add dwarf unwind test (diff) | |
| download | linux-dev-b42dc32d4f91e4c0f34b628fdb012eb423da9e69.tar.xz linux-dev-b42dc32d4f91e4c0f34b628fdb012eb423da9e69.zip | |
perf tools: Fix dwarf unwind max_stack processing
The 'unwind__get_entries' function currently returns 'max_stack + 1'
entries (instead of exact max_stack entries), because max_stack value
does not get decremented for the first entry.
This fix makes dwarf-unwind test pass.
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Jean Pihet <jean.pihet@linaro.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jean Pihet <jean.pihet@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1389098853-14466-7-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | tools/perf/util/unwind.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/util/unwind.c b/tools/perf/util/unwind.c index 742f23bf35ff..bff3209305e1 100644 --- a/tools/perf/util/unwind.c +++ b/tools/perf/util/unwind.c @@ -595,5 +595,5 @@ int unwind__get_entries(unwind_entry_cb_t cb, void *arg, if (ret) return -ENOMEM; - return get_entries(&ui, cb, arg, max_stack); + return --max_stack > 0 ? get_entries(&ui, cb, arg, max_stack) : 0; } |