Commit-ID: 755642322aa66fbc5421a35fd3e1733f73e20083
Gitweb: http://git.kernel.org/tip/755642322aa66fbc5421a35fd3e1733f73e20083
Author: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
AuthorDate: Fri, 13 Mar 2009 12:21:29 +0100
Committer: Ingo Molnar <mingo@xxxxxxx>
CommitDate: Mon, 6 Apr 2009 09:29:31 +0200
perf_counter: use list_move_tail()
Instead of del/add use a move list-op.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
kernel/perf_counter.c | 6 ++----
1 files changed, 2 insertions(+), 4 deletions(-)
diff --git a/kernel/perf_counter.c b/kernel/perf_counter.c
index b2e8389..0fe22c9 100644
--- a/kernel/perf_counter.c
+++ b/kernel/perf_counter.c
@@ -89,8 +89,7 @@ list_del_counter(struct perf_counter *counter, struct perf_counter_context *ctx)
list_for_each_entry_safe(sibling, tmp,
&counter->sibling_list, list_entry) {
- list_del_init(&sibling->list_entry);
- list_add_tail(&sibling->list_entry, &ctx->counter_list);
+ list_move_tail(&sibling->list_entry, &ctx->counter_list);
sibling->group_leader = sibling;
}
}
@@ -959,8 +958,7 @@ static void rotate_ctx(struct perf_counter_context *ctx)
*/
perf_flags = hw_perf_save_disable();
list_for_each_entry(counter, &ctx->counter_list, list_entry) {
- list_del(&counter->list_entry);
- list_add_tail(&counter->list_entry, &ctx->counter_list);
+ list_move_tail(&counter->list_entry, &ctx->counter_list);
break;
}
hw_perf_restore(perf_flags);
--
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