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authorMatthew Wilcox <matthew.r.wilcox@intel.com>2014-03-28 00:40:35 +0400
committerChristoph Hellwig <hch@lst.de>2014-05-28 20:13:24 +0400
commitecc3bc982596cb66bd7f951e2f36503f4841c0c8 (patch)
treed2169a160d6dd4ffbdb18748f2b726e50a46f879 /drivers/message
parent049b3e81d79b1957c0be231d66a98b5715b347e4 (diff)
downloadlinux-ecc3bc982596cb66bd7f951e2f36503f4841c0c8.tar.xz
fusion: Add free msg frames to the head, not tail of list
Reusing a msg frame quickly means it's still cache-hot. This yields a small but noticable performance improvement in a well-known database benchmark. This improvement is already present in the mpt3sas driver. Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Reviewed-by: Nicholas Bellinger <nab@linux-iscsi.org> Reviewed-by: Praveen Krishnamoorthy <Praveen.krishnamoorthy@lsi.com> Acked-by: Sreekanth Reddy <Sreekanth.reddy@lsi.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/message')
-rw-r--r--drivers/message/fusion/mptbase.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c
index 570b18a113ff..ebc0af7d769c 100644
--- a/drivers/message/fusion/mptbase.c
+++ b/drivers/message/fusion/mptbase.c
@@ -1037,7 +1037,7 @@ mpt_free_msg_frame(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf)
goto out;
/* signature to know if this mf is freed */
mf->u.frame.linkage.arg1 = cpu_to_le32(0xdeadbeaf);
- list_add_tail(&mf->u.frame.linkage.list, &ioc->FreeQ);
+ list_add(&mf->u.frame.linkage.list, &ioc->FreeQ);
#ifdef MFCNT
ioc->mfcnt--;
#endif