diff options
| author | Mike Galbraith <efault@gmx.de> | 2009-07-21 10:30:36 +0200 |
|---|---|---|
| committer | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-07-22 18:05:58 +0200 |
| commit | 0fdc7e67dd312986e30b861adff48732bd33eb3f (patch) | |
| tree | 5d5133f36e3f20d174f0754defca47d244224e7c /tools/perf | |
| parent | d20ff6bd6bba2e7e6681fa17565347b410c46ab3 (diff) | |
perf_counter tools: Give perf top inherit option
Currently, perf top -p only tracks the pid provided, which isn't very useful
for watching forky loads, so give it an inherit option.
Signed-off-by: Mike Galbraith <efault@gmx.de>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1248165036.9795.10.camel@marge.simson.net>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/builtin-top.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 95d5c0ae375..c0a423004e1 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -58,6 +58,7 @@ static u64 count_filter = 5; static int print_entries = 15; static int target_pid = -1; +static int inherit = 0; static int profile_cpu = -1; static int nr_cpus = 0; static unsigned int realtime_prio = 0; @@ -549,7 +550,7 @@ int group_fd; static void start_counter(int i, int counter) { struct perf_counter_attr *attr; - unsigned int cpu; + int cpu; cpu = profile_cpu; if (target_pid == -1 && profile_cpu == -1) @@ -559,6 +560,7 @@ static void start_counter(int i, int counter) attr->sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID; attr->freq = freq; + attr->inherit = (cpu < 0) && inherit; try_again: fd[i][counter] = sys_perf_counter_open(attr, target_pid, cpu, group_fd, 0); @@ -685,6 +687,8 @@ static const struct option options[] = { "only display functions with more events than this"), OPT_BOOLEAN('g', "group", &group, "put the counters into a counter group"), + OPT_BOOLEAN('i', "inherit", &inherit, + "child tasks inherit counters"), OPT_STRING('s', "sym-filter", &sym_filter, "pattern", "only display symbols matchig this pattern"), OPT_BOOLEAN('z', "zero", &zero, |