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perf_events: Undo copy/paste damage 

We had two almost identical functions, avoid the duplication.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <20091123103819.537537928@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra 2009-11-23 11:37:23 +01:00 committed by Ingo Molnar
parent a4234bfcf4
commit a66a3052e2
1 changed files with 12 additions and 25 deletions
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37
kernel/perf_event.c
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@ -1704,31 +1704,6 @@ static void free_event(struct perf_event *event)
call_rcu(&event->rcu_head, free_event_rcu);
}
/*
* Called when the last reference to the file is gone.
*/
static int perf_release(struct inode *inode, struct file *file)
{
struct perf_event *event = file->private_data;
struct perf_event_context *ctx = event->ctx;
file->private_data = NULL;
WARN_ON_ONCE(ctx->parent_ctx);
mutex_lock(&ctx->mutex);
perf_event_remove_from_context(event);
mutex_unlock(&ctx->mutex);
mutex_lock(&event->owner->perf_event_mutex);
list_del_init(&event->owner_entry);
mutex_unlock(&event->owner->perf_event_mutex);
put_task_struct(event->owner);
free_event(event);
return 0;
}
int perf_event_release_kernel(struct perf_event *event)
{
struct perf_event_context *ctx = event->ctx;
@ -1749,6 +1724,18 @@ int perf_event_release_kernel(struct perf_event *event)
}
EXPORT_SYMBOL_GPL(perf_event_release_kernel);
/*
* Called when the last reference to the file is gone.
*/
static int perf_release(struct inode *inode, struct file *file)
{
struct perf_event *event = file->private_data;
file->private_data = NULL;
return perf_event_release_kernel(event);
}
static int perf_event_read_size(struct perf_event *event)
{
int entry = sizeof(u64); /* value */