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| author | Matthew Wilcox <matthew.r.wilcox@intel.com> | 2014-03-27 16:40:35 -0400 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2014-05-28 18:13:24 +0200 |
| commit | ecc3bc982596cb66bd7f951e2f36503f4841c0c8 (patch) | |
| tree | d2169a160d6dd4ffbdb18748f2b726e50a46f879 /drivers/message | |
| parent | 049b3e81d79b1957c0be231d66a98b5715b347e4 (diff) | |
| download | linux-ecc3bc982596cb66bd7f951e2f36503f4841c0c8.tar.gz linux-ecc3bc982596cb66bd7f951e2f36503f4841c0c8.tar.bz2 linux-ecc3bc982596cb66bd7f951e2f36503f4841c0c8.zip | |
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.c | 2 |
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 |