diff options
| author | Masami Hiramatsu <mhiramat@redhat.com> | 2010-04-21 15:56:40 -0400 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2010-04-26 15:35:20 -0300 |
| commit | ef4a356574426877d569f8b6579325537eb7909b (patch) | |
| tree | 0416c4ab1740a5ff6a07c01eee3e371128881110 /tools/perf/builtin-probe.c | |
| parent | 5d1ee0413c8e2e0aa48510b1edfb3c4d2d43455b (diff) | |
| download | linux-ef4a356574426877d569f8b6579325537eb7909b.tar.bz2 | |
perf probe: Add --max-probes option
Add --max-probes option to change the maximum limit of
findable probe points per event, since inlined function can be
expanded into thousands of probe points. Default value is 128.
Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
LKML-Reference: <20100421195640.24664.62984.stgit@localhost6.localdomain6>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-probe.c')
| -rw-r--r-- | tools/perf/builtin-probe.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c index c1e54035e8cf..61c6d70732c9 100644 --- a/tools/perf/builtin-probe.c +++ b/tools/perf/builtin-probe.c @@ -54,6 +54,7 @@ static struct { struct perf_probe_event events[MAX_PROBES]; struct strlist *dellist; struct line_range line_range; + int max_probe_points; } params; @@ -179,6 +180,8 @@ static const struct option options[] = { "file", "vmlinux pathname"), #endif OPT__DRY_RUN(&probe_event_dry_run), + OPT_INTEGER('\0', "max-probes", ¶ms.max_probe_points, + "Set how many probe points can be found for a probe."), OPT_END() }; @@ -200,6 +203,9 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used) } } + if (params.max_probe_points == 0) + params.max_probe_points = MAX_PROBES; + if ((!params.nevents && !params.dellist && !params.list_events && !params.show_lines)) usage_with_options(probe_usage, options); @@ -246,7 +252,8 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used) if (params.nevents) { ret = add_perf_probe_events(params.events, params.nevents, - params.force_add); + params.force_add, + params.max_probe_points); if (ret < 0) { pr_err(" Error: Failed to add events. (%d)\n", ret); return ret; |