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linux/drivers/block
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Jens Axboe 0864fe09ab null_blk: unalign call_single_data 
Commit 966a967116 randomly added alignment to this structure, but
it's actually detrimental to performance of null_blk. Test case:

Running on both the home and remote node shows a ~5% degradation
in performance.

While in there, move blk_status_t to the hole after the integer tag
in the nullb_cmd structure. After this patch, we shrink the size
from 192 to 152 bytes.

Fixes: 966a967116 ("smp: Avoid using two cache lines for struct call_single_data")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-12-20 13:16:33 -07:00
..
aoe treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts 2017-11-21 16:35:54 -08:00
drbd Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-11-13 17:56:58 -08:00
mtip32xx Merge branch 'for-4.15/block' of git://git.kernel.dk/linux-block 2017-11-14 15:32:19 -08:00
paride Merge branch 'for-4.15/block' of git://git.kernel.dk/linux-block 2017-11-14 15:32:19 -08:00
rsxx treewide: setup_timer() -> timer_setup() (2 field) 2017-11-21 15:57:09 -08:00
xen-blkback Merge branch 'for-4.14/block' of git://git.kernel.dk/linux-block 2017-09-07 11:59:42 -07:00
zram drivers/block/zram/zram_drv.c: make zram_page_end_io() static 2017-11-15 18:21:05 -08:00
amiflop.c amifloppy: Convert timers to use timer_setup() 2017-11-14 20:11:57 -07:00
ataflop.c treewide: Switch DEFINE_TIMER callbacks to struct timer_list * 2017-11-21 15:57:05 -08:00
brd.c libnvdimm for 4.15 2017-11-17 09:51:57 -08:00
cryptoloop.c block: cryptoloop - Fix build warning 2017-09-26 07:41:22 -06:00
DAC960.c treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
DAC960.h treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
floppy.c block/floppy: Convert callback to pass timer_list 2017-11-14 20:10:35 -07:00
Kconfig libnvdimm for 4.15 2017-11-17 09:51:57 -08:00
loop.c block: fix a build error 2017-09-26 12:07:24 -06:00
loop.h block/loop: make loop cgroup aware 2017-09-26 07:41:22 -06:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nbd.c Merge branch 'for-4.15/block' of git://git.kernel.dk/linux-block 2017-11-14 15:32:19 -08:00
null_blk.c null_blk: unalign call_single_data 2017-12-20 13:16:33 -07:00
pktcdvd.c
ps3disk.c
ps3vram.c
rbd_types.h
rbd.c rbd: default to single-major device number scheme 2017-11-13 16:33:08 +01:00
skd_main.c treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
skd_s1120.h
smart1,2.h
sunvdc.c treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
swim3.c treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts 2017-11-21 16:35:54 -08:00
swim_asm.S
swim.c
sx8.c
umem.c treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
umem.h
virtio_blk.c virtio_blk: Fix an SG_IO regression 2017-10-27 08:23:21 -06:00
xen-blkfront.c Merge branch 'for-4.14/block' of git://git.kernel.dk/linux-block 2017-09-07 11:59:42 -07:00
xsysace.c treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
z2ram.c