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| author | Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> | 2009-12-09 11:28:13 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-12-09 09:56:27 +0100 |
| commit | aa5452d70c0d559310598b243b8b1033c10056e7 (patch) | |
| tree | 80f1c0b1137722a71623254c93bec20e33f4b19d /kernel | |
| parent | 44234adcdce38f83c56e05f808ce656175b4beeb (diff) | |
| download | linux-stable-aa5452d70c0d559310598b243b8b1033c10056e7.tar.gz linux-stable-aa5452d70c0d559310598b243b8b1033c10056e7.tar.bz2 linux-stable-aa5452d70c0d559310598b243b8b1033c10056e7.zip | |
perf_event: Clean up __perf_event_init_context()
Clean up the code a bit:
- define 'perf_cpu_context' variable with 'static'
- use kzalloc() instead of kmalloc() and memset()
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Reviewed-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <4B1F194D.7080306@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/perf_event.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/kernel/perf_event.c b/kernel/perf_event.c index 3b0cf86eee84..2b06c45bfba9 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -36,7 +36,7 @@ /* * Each CPU has a list of per CPU events: */ -DEFINE_PER_CPU(struct perf_cpu_context, perf_cpu_context); +static DEFINE_PER_CPU(struct perf_cpu_context, perf_cpu_context); int perf_max_events __read_mostly = 1; static int perf_reserved_percpu __read_mostly; @@ -1579,7 +1579,6 @@ static void __perf_event_init_context(struct perf_event_context *ctx, struct task_struct *task) { - memset(ctx, 0, sizeof(*ctx)); spin_lock_init(&ctx->lock); mutex_init(&ctx->mutex); INIT_LIST_HEAD(&ctx->group_list); @@ -1654,7 +1653,7 @@ static struct perf_event_context *find_get_context(pid_t pid, int cpu) } if (!ctx) { - ctx = kmalloc(sizeof(struct perf_event_context), GFP_KERNEL); + ctx = kzalloc(sizeof(struct perf_event_context), GFP_KERNEL); err = -ENOMEM; if (!ctx) goto errout; @@ -5105,7 +5104,7 @@ int perf_event_init_task(struct task_struct *child) * First allocate and initialize a context for the child. */ - child_ctx = kmalloc(sizeof(struct perf_event_context), GFP_KERNEL); + child_ctx = kzalloc(sizeof(struct perf_event_context), GFP_KERNEL); if (!child_ctx) return -ENOMEM; |