perf_counter: generalize pending infrastructure

Prepare the pending infrastructure to do more than wakeups.

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: <20090406094517.634732847@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 4 insertions, 3 deletions

diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h
index 8d5d11b8d011..977fb15a53f3 100644
--- a/include/linux/perf_counter.h
+++ b/include/linux/perf_counter.h
@@ -321,8 +321,9 @@ struct perf_mmap_data {
         void                            *data_pages[0];
 };
 
-struct perf_wakeup_entry {
-        struct perf_wakeup_entry *next;
+struct perf_pending_entry {
+        struct perf_pending_entry *next;
+        void (*func)(struct perf_pending_entry *);
 };
 
 /**
@@ -401,7 +402,7 @@ struct perf_counter {
         wait_queue_head_t               waitq;
         struct fasync_struct            *fasync;
         /* optional: for NMIs */
-        struct perf_wakeup_entry        wakeup;
+        struct perf_pending_entry       pending;
 
         void (*destroy)(struct perf_counter *);
         struct rcu_head                 rcu_head;