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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-04-08 15:01:30 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-04-08 19:05:47 +0200 |
| commit | 8d1b2d9361b494bfc761700c348c65ebbe3deb5b (patch) | |
| tree | 284706b328133063bf530cb47c52a827b523b65a /include/linux/perf_counter.h | |
| parent | 8740f9418c78dcad694b46ab25d1645d5aef1f5e (diff) | |
| download | lwn-8d1b2d9361b494bfc761700c348c65ebbe3deb5b.tar.gz lwn-8d1b2d9361b494bfc761700c348c65ebbe3deb5b.zip | |
perf_counter: track task-comm data
Similar to the mmap data stream, add one that tracks the task COMM field,
so that the userspace reporting knows what to call a task.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
LKML-Reference: <20090408130409.127422406@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 | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h index 8bf764fc6220..a70a55f27598 100644 --- a/include/linux/perf_counter.h +++ b/include/linux/perf_counter.h @@ -142,8 +142,9 @@ struct perf_counter_hw_event { exclude_idle : 1, /* don't count when idle */ mmap : 1, /* include mmap data */ munmap : 1, /* include munmap data */ + comm : 1, /* include comm data */ - __reserved_1 : 53; + __reserved_1 : 52; __u32 extra_config_len; __u32 wakeup_events; /* wakeup every n events */ @@ -231,6 +232,16 @@ enum perf_event_type { PERF_EVENT_MUNMAP = 2, /* + * struct { + * struct perf_event_header header; + * + * u32 pid, tid; + * char comm[]; + * }; + */ + PERF_EVENT_COMM = 3, + + /* * When header.misc & PERF_EVENT_MISC_OVERFLOW the event_type field * will be PERF_RECORD_* * @@ -545,6 +556,8 @@ extern void perf_counter_mmap(unsigned long addr, unsigned long len, extern void perf_counter_munmap(unsigned long addr, unsigned long len, unsigned long pgoff, struct file *file); +extern void perf_counter_comm(struct task_struct *tsk); + #define MAX_STACK_DEPTH 255 struct perf_callchain_entry { @@ -583,6 +596,7 @@ static inline void perf_counter_munmap(unsigned long addr, unsigned long len, unsigned long pgoff, struct file *file) { } +static inline void perf_counter_comm(struct task_struct *tsk) { } #endif #endif /* __KERNEL__ */ |