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| author | Li Zefan <lizf@cn.fujitsu.com> | 2011-03-03 06:26:06 (GMT) |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-03-04 10:32:51 (GMT) |
| commit | 1b15d0558e82df9b3659804ceb44187b98eda354 (patch) | |
| tree | 5ef63c23940d606bed12ae23a0ab5839c55fa919 /kernel/perf_event.c | |
| parent | f75e18cb9627b1d3d752b83a0b5563da0042c50a (diff) | |
| download | linux-1b15d0558e82df9b3659804ceb44187b98eda354.tar.xz | |
perf cgroup: Clean up perf_cgroup_create()
- Use kzalloc() to replace kmalloc() + memset().
- Remove redundant initialization, since alloc_percpu() returns
zero-filled percpu memory.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <4D6F347E.2010806@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/perf_event.c')
| -rw-r--r-- | kernel/perf_event.c | 11 |
1 files changed, 1 insertions, 10 deletions
diff --git a/kernel/perf_event.c b/kernel/perf_event.c index b002095..193b190 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -7346,26 +7346,17 @@ static struct cgroup_subsys_state *perf_cgroup_create( struct cgroup_subsys *ss, struct cgroup *cont) { struct perf_cgroup *jc; - struct perf_cgroup_info *t; - int c; - jc = kmalloc(sizeof(*jc), GFP_KERNEL); + jc = kzalloc(sizeof(*jc), GFP_KERNEL); if (!jc) return ERR_PTR(-ENOMEM); - memset(jc, 0, sizeof(*jc)); - jc->info = alloc_percpu(struct perf_cgroup_info); if (!jc->info) { kfree(jc); return ERR_PTR(-ENOMEM); } - for_each_possible_cpu(c) { - t = per_cpu_ptr(jc->info, c); - t->time = 0; - t->timestamp = 0; - } return &jc->css; } |