perf: Convert kmalloc_node(...GFP_ZERO...) to kzalloc_node()

Use the convenience function instead of __GFP_ZERO.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/f58599ae1a8d7b32d37e9cf283e95fba6452f7f6.1377809875.git.joe@perches.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

arch/x86/kernel/cpu/perf_event_amd.c

@@ -347,8 +347,7 @@ static struct amd_nb *amd_alloc_nb(int cpu)
 	struct amd_nb *nb;
 	int i;
 
-	nb = kmalloc_node(sizeof(struct amd_nb), GFP_KERNEL | __GFP_ZERO,
-			  cpu_to_node(cpu));
+	nb = kzalloc_node(sizeof(struct amd_nb), GFP_KERNEL, cpu_to_node(cpu));
 	if (!nb)
 		return NULL;
 

arch/x86/kernel/cpu/perf_event_intel_ds.c

@@ -224,7 +224,7 @@ static int alloc_pebs_buffer(int cpu)
 	if (!x86_pmu.pebs)
 		return 0;
 
-	buffer = kmalloc_node(PEBS_BUFFER_SIZE, GFP_KERNEL | __GFP_ZERO, node);
+	buffer = kzalloc_node(PEBS_BUFFER_SIZE, GFP_KERNEL, node);
 	if (unlikely(!buffer))
 		return -ENOMEM;
 
@@ -262,7 +262,7 @@ static int alloc_bts_buffer(int cpu)
 	if (!x86_pmu.bts)
 		return 0;
 
-	buffer = kmalloc_node(BTS_BUFFER_SIZE, GFP_KERNEL | __GFP_ZERO, node);
+	buffer = kzalloc_node(BTS_BUFFER_SIZE, GFP_KERNEL, node);
 	if (unlikely(!buffer))
 		return -ENOMEM;
 
@@ -295,7 +295,7 @@ static int alloc_ds_buffer(int cpu)
 	int node = cpu_to_node(cpu);
 	struct debug_store *ds;
 
-	ds = kmalloc_node(sizeof(*ds), GFP_KERNEL | __GFP_ZERO, node);
+	ds = kzalloc_node(sizeof(*ds), GFP_KERNEL, node);
 	if (unlikely(!ds))
 		return -ENOMEM;
 

arch/x86/kernel/cpu/perf_event_intel_uncore.c

@@ -2713,7 +2713,7 @@ struct intel_uncore_box *uncore_alloc_box(struct intel_uncore_type *type, int cp
 
 	size = sizeof(*box) + type->num_shared_regs * sizeof(struct intel_uncore_extra_reg);
 
-	box = kmalloc_node(size, GFP_KERNEL | __GFP_ZERO, cpu_to_node(cpu));
+	box = kzalloc_node(size, GFP_KERNEL, cpu_to_node(cpu));
 	if (!box)
 		return NULL;