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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2009-07-05 07:39:18 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-07-05 10:30:21 +0200 |
| commit | be9038859e56f729cc9d3b070a35fb8829a73696 (patch) | |
| tree | e258cec23a938ba1d1a9a38119420171c52f31c0 /tools | |
| parent | perf report: Warn on callchain output request from non-callchain file (diff) | |
| download | linux-be9038859e56f729cc9d3b070a35fb8829a73696.tar.xz linux-be9038859e56f729cc9d3b070a35fb8829a73696.zip | |
perf report: Use a modifiable string for default callchain options
If the user doesn't provide options to tune his callchain output
(ie: if he uses -c without arguments) then the default value passed
in the OPT_CALLBACK_DEFAULT() macro is used.
But it's parsed later by strtok() which will replace comma separators
to a zero. This may segfault as we are using a read-only string.
Use a modifiable one instead, and also fix the "100%" default
minimum threshold value by turning it into a 0 (output every callchains)
as it was intended in the origin.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Anton Blanchard <anton@samba.org>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <1246772361-9960-2-git-send-email-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/builtin-report.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 9f9575afab08..3db99fd99867 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -58,6 +58,8 @@ static char *parent_pattern = default_parent_pattern; static regex_t parent_regex; static int exclude_other = 1; + +static char callchain_default_opt[] = "flat,0"; static int callchain; static enum chain_mode callchain_mode; static double callchain_min_percent = 0.0; @@ -1871,7 +1873,7 @@ static const struct option options[] = { "Only display entries with parent-match"), OPT_CALLBACK_DEFAULT('c', "callchain", NULL, "output_type,min_percent", "Display callchains using output_type and min percent threshold. " - "Default: flat,0", &parse_callchain_opt, "flat,100"), + "Default: flat,0", &parse_callchain_opt, callchain_default_opt), OPT_STRING('d', "dsos", &dso_list_str, "dso[,dso...]", "only consider symbols in these dsos"), OPT_STRING('C', "comms", &comm_list_str, "comm[,comm...]", |