perf, amd: Use kmalloc_node(,__GFP_ZERO) for northbridge structure allocation

Jasper suggested we use the zeroing capability of the allocators
instead of calling memset ourselves. Add node affinity while we're at
it.

Reported-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/x86/kernel/cpu/perf_event_amd.c b/arch/x86/kernel/cpu/perf_event_amd.c
index 46d58448c3af..e421b8cd6944 100644
--- a/arch/x86/kernel/cpu/perf_event_amd.c
+++ b/arch/x86/kernel/cpu/perf_event_amd.c
@@ -280,11 +280,11 @@ static struct amd_nb *amd_alloc_nb(int cpu, int nb_id)
         struct amd_nb *nb;
         int i;
 
-        nb = kmalloc(sizeof(struct amd_nb), GFP_KERNEL);
+        nb = kmalloc_node(sizeof(struct amd_nb), GFP_KERNEL | __GFP_ZERO,
+                          cpu_to_node(cpu));
         if (!nb)
                 return NULL;
 
-        memset(nb, 0, sizeof(*nb));
         nb->nb_id = nb_id;
 
         /*