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perf_counter: track task-comm data

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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>
This commit is contained in:
Peter Zijlstra
2009-04-08 15:01:30 +02:00
committed by Ingo Molnar
parent 8740f9418c
commit 8d1b2d9361
3 changed files with 109 additions and 1 deletions
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fs/exec.c
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@@ -951,6 +951,7 @@ void set_task_comm(struct task_struct *tsk, char *buf)
task_lock(tsk);
strlcpy(tsk->comm, buf, sizeof(tsk->comm));
task_unlock(tsk);
perf_counter_comm(tsk);
}
int flush_old_exec(struct linux_binprm * bprm)