Mike Miller e7b18ede44 cciss: set max scatter gather entries to 32 on P600 ... At one time we used to set the maximum number of scatter gather elements on all Smart Array controllers to 32. At some point in time the firmware began to write the "appropriate" value for each controller into the config table. The cciss driver would then read that and set h->maxsgentries. h->maxsgentries = readl(&(h->cfgtable->MaxSGElements); On the P600 that value is 544. Under some workloads a significant performance reduction may result. This patch forces the P600 to use only 32 scatter gather elements. Other controllers are not affected. Signed-off-by: Mike Miller <mike.miller@hp.com> Signed-off-by: Dwight (Bud) Brown <bubrown@redhat.com> Signed-off-by: Tomas Henzl <thenzl@redhat.com> Acked-by: Stephen M. Cameron <steve.cameron@hp.com> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2013-09-11 15:56:59 -07:00
..
aoe	aoe: adjust ref of head for compound page tails	2013-08-13 17:57:48 -07:00
drbd	treewide: Add __GFP_NOWARN to k.alloc calls with v.alloc fallbacks	2013-08-20 13:06:40 +02:00
mtip32xx	drivers: avoid parsing names as kthread_run() format strings	2013-07-03 16:07:41 -07:00
paride	block_device_operations->release() should return void	2013-05-07 02:16:21 -04:00
rsxx	rsxx: Adding in debugfs entries.	2013-06-19 13:52:10 +02:00
xen-blkback	block: replace strict_strtoul() with kstrtoul()	2013-09-11 15:56:56 -07:00
amiflop.c	block_device_operations->release() should return void	2013-05-07 02:16:21 -04:00
ataflop.c	block_device_operations->release() should return void	2013-05-07 02:16:21 -04:00
brd.c	drivers/block/brd.c: fix brd_lookup_page() race	2013-05-24 16:22:52 -07:00
cciss_cmd.h	cciss: use new doorbell-bit-5 reset method	2011-05-06 08:23:55 -06:00
cciss_scsi.c	cciss: switch to ->show_info()	2013-04-09 14:13:19 -04:00
cciss_scsi.h	cciss: add cciss_tape_cmds module paramter	2011-05-06 08:23:59 -06:00
cciss.c	cciss: set max scatter gather entries to 32 on P600	2013-09-11 15:56:59 -07:00
cciss.h	cciss: Adds simple mode functionality	2011-08-08 11:40:15 +02:00
cpqarray.c	block_device_operations->release() should return void	2013-05-07 02:16:21 -04:00
cpqarray.h
cryptoloop.c	move linux/loop.h to drivers/block	2013-06-29 12:46:45 +04:00
DAC960.c	procfs: new helper - PDE_DATA(inode)	2013-04-09 14:13:32 -04:00
DAC960.h
floppy.c	Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-block	2013-05-08 10:13:35 -07:00
hd.c	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
ida_cmd.h
ida_ioctl.h
Kconfig	rsxx: Changing the adapter name to the official name.	2013-06-19 13:52:09 +02:00
loop.c	move linux/loop.h to drivers/block	2013-06-29 12:46:45 +04:00
loop.h	move linux/loop.h to drivers/block	2013-06-29 12:46:45 +04:00
Makefile	NVMe: Add nvme-scsi.c	2013-03-28 14:50:49 -04:00
mg_disk.c	drivers/block/mg_disk.c: make mg_times_out() static	2013-09-11 15:56:59 -07:00
nbd.c	nbd: correct disconnect behavior	2013-07-03 16:08:05 -07:00
nvme-core.c	NVMe: Merge issue on character device bring-up	2013-09-06 16:26:58 -04:00
nvme-scsi.c	NVMe: Use kzalloc instead of kmalloc+memset	2013-06-19 13:24:27 -04:00
osdblk.c	block: replace strict_strtoul() with kstrtoul()	2013-09-11 15:56:56 -07:00
pktcdvd.c	pktcdvd: silence static checker warning	2013-05-29 15:36:22 +02:00
ps3disk.c	Drivers: block: remove __dev* attributes.	2013-01-03 15:57:15 -08:00
ps3vram.c	procfs: new helper - PDE_DATA(inode)	2013-04-09 14:13:32 -04:00
rbd_types.h	rbd: get rid of RBD_MAX_SEG_NAME_LEN	2012-12-17 08:37:29 -06:00
rbd.c	block: replace strict_strtoul() with kstrtoul()	2013-09-11 15:56:56 -07:00
smart1,2.h	fix typos 'comamnd' -> 'command' in comments	2011-02-02 11:31:21 +01:00
sunvdc.c	sunvdc: Fix off-by-one in generic_request().	2013-02-14 11:49:01 -08:00
swim3.c	block_device_operations->release() should return void	2013-05-07 02:16:21 -04:00
swim_asm.S
swim.c	swim: Release memory region after incorrect return/goto	2013-06-24 19:44:19 +02:00
sx8.c	block, sx8: fix pointer math issue getting fw version	2012-03-03 19:44:39 +01:00
umem.c	Drivers: block: remove __dev* attributes.	2013-01-03 15:57:15 -08:00
umem.h
virtio_blk.c	virtio_blk: Add missing 'static' qualifiers	2013-05-20 12:09:23 +09:30
xen-blkfront.c	Merge branch 'stable/for-jens-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen into for-3.11/drivers	2013-06-28 16:01:14 +02:00
xsysace.c	xilinx systemace: Fix sparse warnings	2013-07-10 07:47:12 +02:00
z2ram.c	block_device_operations->release() should return void	2013-05-07 02:16:21 -04:00