Jens Axboe e2e1a148bc block: add sysfs knob for turning off disk entropy contributions ...

There are two reasons for doing this:

- On SSD disks, the completion times aren't as random as they
  are for rotational drives. So it's questionable whether they
  should contribute to the random pool in the first place.

- Calling add_disk_randomness() has a lot of overhead.

This adds /sys/block/<dev>/queue/add_random that will allow you to
switch off on a per-device basis. The default setting is on, so there
should be no functional changes from this patch.

Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

2010-08-07 18:13:00 +02:00

..

blk-barrier.c

blkdev: move blkdev_issue helper functions to separate file

2010-04-28 19:47:36 +02:00

blk-cgroup.c

Merge branch 'master' into for-2.6.35

2010-05-21 21:27:26 +02:00

blk-cgroup.h

blk-cgroup: config options re-arrangement

2010-04-26 19:27:56 +02:00

blk-core.c

block: add sysfs knob for turning off disk entropy contributions

2010-08-07 18:13:00 +02:00

blk-exec.c

…

blk-integrity.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

blk-ioc.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

blk-iopoll.c

…

blk-lib.c

block: fix bad use of min() on different types

2010-04-29 09:28:21 +02:00

blk-map.c

…

blk-merge.c

…

blk-settings.c

Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

2010-04-09 11:50:29 -07:00

blk-softirq.c

…

blk-sysfs.c

block: add sysfs knob for turning off disk entropy contributions

2010-08-07 18:13:00 +02:00

blk-tag.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

blk-timeout.c

block: ensure jiffies wrap is handled correctly in blk_rq_timed_out_timer

2010-04-21 17:42:08 +02:00

blk.h

…

bsg.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

cfq-iosched.c

cfq-iosched: Fixed boot warning with BLK_CGROUP=y and CFQ_GROUP_IOSCHED=n

2010-06-18 19:57:47 +02:00

cfq.h

cfq: fix recursive call in cfq_blkiocg_update_completion_stats()

2010-06-21 09:10:55 +02:00

compat_ioctl.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

deadline-iosched.c

…

elevator.c

block: make blk_init_free_list and elevator_init idempotent

2010-06-04 13:47:06 +02:00

genhd.c

block: remove all rcu head initializations

2010-05-21 20:01:02 +02:00

ioctl.c

blkdev: generalize flags for blkdev_issue_fn functions

2010-04-28 19:47:36 +02:00

Kconfig

blk-cgroup: config options re-arrangement

2010-04-26 19:27:56 +02:00

Kconfig.iosched

blk-cgroup: config options re-arrangement

2010-04-26 19:27:56 +02:00

Makefile

blkdev: move blkdev_issue helper functions to separate file

2010-04-28 19:47:36 +02:00

noop-iosched.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

scsi_ioctl.c

…