We can avoid two calls to memset() in mm/memcontrol.c by using
kzalloc_node(), kzalloc & vzalloc().
Signed-off-by: Jesper Juhl <jj@xxxxxxxxxxxxx>
---
memcontrol.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 00bb8a6..890df27 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -4176,12 +4176,11 @@ static int alloc_mem_cgroup_per_zone_info(struct mem_cgroup *mem, int node)
*/
if (!node_state(node, N_NORMAL_MEMORY))
tmp = -1;
- pn = kmalloc_node(sizeof(*pn), GFP_KERNEL, tmp);
+ pn = kzalloc_node(sizeof(*pn), GFP_KERNEL, tmp);
if (!pn)
return 1;
mem->info.nodeinfo[node] = pn;
- memset(pn, 0, sizeof(*pn));
for (zone = 0; zone < MAX_NR_ZONES; zone++) {
mz = &pn->zoneinfo[zone];
@@ -4206,14 +4205,13 @@ static struct mem_cgroup *mem_cgroup_alloc(void)
/* Can be very big if MAX_NUMNODES is very big */
if (size < PAGE_SIZE)
- mem = kmalloc(size, GFP_KERNEL);
+ mem = kzalloc(size, GFP_KERNEL);
else
- mem = vmalloc(size);
+ mem = vzalloc(size);
if (!mem)
return NULL;
- memset(mem, 0, size);
mem->stat = alloc_percpu(struct mem_cgroup_stat_cpu);
if (!mem->stat)
goto out_free;
--
Jesper Juhl <jj@xxxxxxxxxxxxx> http://www.chaosbits.net/
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