Subject: + mm-zswap-numa-aware-allocation-for-zswap_dstmem.patch added to -mm tree
To: edumazet@xxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Tue, 27 May 2014 13:50:29 -0700
The patch titled
Subject: mm/zswap: NUMA aware allocation for zswap_dstmem
has been added to the -mm tree. Its filename is
mm-zswap-numa-aware-allocation-for-zswap_dstmem.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-zswap-numa-aware-allocation-for-zswap_dstmem.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-zswap-numa-aware-allocation-for-zswap_dstmem.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Eric Dumazet <edumazet@xxxxxxxxxx>
Subject: mm/zswap: NUMA aware allocation for zswap_dstmem
zswap_dstmem is a percpu block of memory, which should be allocated using
kmalloc_node(), to get better NUMA locality.
Without it, all the blocks are allocated from a single node.
Signed-off-by: Eric Dumazet <edumazet@xxxxxxxxxx>
Seth Jennings <sjennings@xxxxxxxxxxxxxx>
David Rientjes <rientjes@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/zswap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN mm/zswap.c~mm-zswap-numa-aware-allocation-for-zswap_dstmem mm/zswap.c
--- a/mm/zswap.c~mm-zswap-numa-aware-allocation-for-zswap_dstmem
+++ a/mm/zswap.c
@@ -347,7 +347,7 @@ static int __zswap_cpu_notifier(unsigned
return NOTIFY_BAD;
}
*per_cpu_ptr(zswap_comp_pcpu_tfms, cpu) = tfm;
- dst = kmalloc(PAGE_SIZE * 2, GFP_KERNEL);
+ dst = kmalloc_node(PAGE_SIZE * 2, GFP_KERNEL, cpu_to_node(cpu));
if (!dst) {
pr_err("can't allocate compressor buffer\n");
crypto_free_comp(tfm);
_
Patches currently in -mm which might be from edumazet@xxxxxxxxxx are
mm-zswap-numa-aware-allocation-for-zswap_dstmem.patch
linux-next.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
