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perf_counter: SIGIO support

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Provide support for fcntl() I/O availability signals.

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: <20090406094517.579788800@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra
2009-04-06 11:45:01 +02:00
committed by Ingo Molnar
parent 9c03d88e32
commit 3c446b3d3b
2 changed files with 21 additions and 1 deletions
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include/linux/perf_counter.h
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@ -238,6 +238,7 @@ enum perf_event_type {
#include <linux/rcupdate.h>
#include <linux/spinlock.h>
#include <linux/hrtimer.h>
#include <linux/fs.h>
#include <asm/atomic.h>
struct task_struct;
@ -398,6 +399,7 @@ struct perf_counter {
/* poll related */
wait_queue_head_t waitq;
struct fasync_struct *fasync;
/* optional: for NMIs */
struct perf_wakeup_entry wakeup;