Hi (please CC me on replies),
Apologies to those who receive this multiple times. I screwed up the To:
field in my original mail :-(
In mem_cgroup_alloc() we currently do either kmalloc() or vmalloc() then
followed by memset() to zero the memory. This can be more efficiently
achieved by using kzalloc() and vzalloc().
Signed-off-by: Jesper Juhl <jj@xxxxxxxxxxxxx>
---
memcontrol.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 9a99cfa..90da698 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -4199,14 +4199,13 @@ 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) {
if (size < PAGE_SIZE)
--
Jesper Juhl <jj@xxxxxxxxxxxxx> http://www.chaosbits.net/
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