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perf stat: Remove --per-thread pid/tid limitation

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Currently, if we execute 'perf stat --per-thread' without specifying
pid/tid, perf will return error.

root@skl:/tmp# perf stat --per-thread
The --per-thread option is only available when monitoring via -p -t options.
    -p, --pid <pid>       stat events on existing process id
    -t, --tid <tid>       stat events on existing thread id

This patch removes this limitation. If no pid/tid specified, it returns
all threads (get threads from /proc).

Note that it doesn't support cpu_list yet so if it's a cpu_list case,
then skip.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1512482591-4646-11-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jin Yao
2017-12-05 22:03:10 +08:00
committed by Arnaldo Carvalho de Melo
parent 73c0ca1eee
commit 1d9f8d1b82
2 changed files with 22 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
tools/perf/util/target.h
View File

@ -64,6 +64,11 @@ static inline bool target__none(struct target *target)
return !target__has_task(target) && !target__has_cpu(target);
}
static inline bool target__has_per_thread(struct target *target)
{
return target->system_wide && target->per_thread;
}
static inline bool target__uses_dummy_map(struct target *target)
{
bool use_dummy = false;
@ -73,6 +78,8 @@ static inline bool target__uses_dummy_map(struct target *target)
else if (target__has_task(target) ||
(!target__has_cpu(target) && !target->uses_mmap))
use_dummy = true;
else if (target__has_per_thread(target))
use_dummy = true;
return use_dummy;
}