diff options
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-03-25 12:30:25 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-04-06 09:30:34 +0200 |
| commit | ea5d20cf99db5d26d43b6d322d3ace17e08a6552 (patch) | |
| tree | 287bb37825294d4f3cd943d83b6fb7d4b7009630 /include/linux/perf_counter.h | |
| parent | 63e35b25d6b5c3136d22ef249dbbf96716aa08bf (diff) | |
perf_counter: optionally provide the pid/tid of the sampled task
Allow cpu wide counters to profile userspace by providing what process
the sample belongs to.
This raises the first issue with the output type, lots of these
options: group, tid, callchain, etc.. are non-exclusive and could be
combined, suggesting a bitfield.
However, things like the mmap() data stream doesn't fit in that.
How to split the type field...
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Orig-LKML-Reference: <20090325113317.013775235@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/perf_counter.h')
| -rw-r--r-- | include/linux/perf_counter.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h index c256635377d..7fdbdf8be77 100644 --- a/include/linux/perf_counter.h +++ b/include/linux/perf_counter.h @@ -127,8 +127,9 @@ struct perf_counter_hw_event { exclude_kernel : 1, /* ditto kernel */ exclude_hv : 1, /* ditto hypervisor */ exclude_idle : 1, /* don't count when idle */ + include_tid : 1, /* include the tid */ - __reserved_1 : 55; + __reserved_1 : 54; __u32 extra_config_len; __u32 __reserved_4; @@ -164,6 +165,8 @@ struct perf_event_header { enum perf_event_type { PERF_EVENT_IP = 0, PERF_EVENT_GROUP = 1, + + __PERF_EVENT_TID = 0x100, }; #ifdef __KERNEL__ |