iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

perf,rcu: convert call_rcu(free_ctx) to kfree_rcu()

Browse Source 
The rcu callback free_ctx() just calls a kfree(),
so we use kfree_rcu() instead of the call_rcu(free_ctx).

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
This commit is contained in:
Lai Jiangshan 2011-03-18 12:07:41 +08:00 committed by Paul E. McKenney
parent 1f8d36a186
commit cb796ff338
1 changed files with 1 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
kernel/perf_event.c
View File

@ -586,14 +586,6 @@ static void get_ctx(struct perf_event_context *ctx)
WARN_ON(!atomic_inc_not_zero(&ctx->refcount)); WARN_ON(!atomic_inc_not_zero(&ctx->refcount));
} }
static void free_ctx(struct rcu_head *head)
{
struct perf_event_context *ctx;
ctx = container_of(head, struct perf_event_context, rcu_head);
kfree(ctx);
}
static void put_ctx(struct perf_event_context *ctx) static void put_ctx(struct perf_event_context *ctx)
{ {
if (atomic_dec_and_test(&ctx->refcount)) { if (atomic_dec_and_test(&ctx->refcount)) {
@ -601,7 +593,7 @@ static void put_ctx(struct perf_event_context *ctx)
put_ctx(ctx->parent_ctx); put_ctx(ctx->parent_ctx);
if (ctx->task) if (ctx->task)
put_task_struct(ctx->task); put_task_struct(ctx->task);
call_rcu(&ctx->rcu_head, free_ctx); kfree_rcu(ctx, rcu_head);
} }
} }