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Filename Latest commit message Latest commit date
Shaohua Li eff2c4f108 nullb: bandwidth control
In test, we usually expect controllable disk speed. For example, in a
raid array, we'd like some disks are fast and some are slow. MD RAID
actually has a feature for this. To test the feature, we'd like to make
the disk run in specific speed.

block throttling probably can be used for this purpose, but it requires
cgroup setup. Here we just implement a simple throttling mechanism in
the driver. There is slight fluctuation in the mechanism, but it's good
enough for test.

To configure the bandwidth cap, user sets the 'mbps' attribute. mbps is
MB/s.

Based on original patch from Kyungchan Koh

Signed-off-by: Kyungchan Koh <kkc6196@fb.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-08-23 08:54:09 -06:00
arch s390: SRCU fix. 2017-07-28 13:36:56 -07:00
block block: Relax a check in blk_start_queue() 2017-08-18 08:45:29 -06:00
certs modsign: add markers to endif-statements in certs/Makefile 2017-07-14 11:01:37 +10:00
crypto crypto: authencesn - Fix digest_null crash 2017-07-18 17:01:11 +08:00
Documentation Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2017-07-28 12:31:49 -07:00
drivers nullb: bandwidth control 2017-08-23 08:54:09 -06:00
firmware
fs blktrace: add an option to allow displaying cgroup path 2017-07-29 09:00:03 -06:00
include blk-mq: Make blk_mq_reinit_tagset() calls easier to read 2017-08-18 08:36:58 -06:00
init
ipc
kernel block: use standard blktrace API to output cgroup info for debug notes 2017-07-29 09:00:03 -06:00
lib uuid: fix incorrect uuid_equal conversion in test_uuid_test 2017-07-21 09:38:30 +02:00
mm Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2017-07-15 12:00:42 -07:00
net NFS client bugfixes for 4.13 2017-07-21 16:26:01 -07:00
samples
scripts DeviceTree fixes for 4.13: 2017-07-28 17:21:41 -07:00
security Now that IPC and other changes have landed, enable manual markings for 2017-07-19 08:55:18 -07:00
sound sound fixes for 4.13-rc3 2017-07-27 10:44:28 -07:00
tools tools/kvm_stat: add '-f help' to get the available event list 2017-07-26 19:04:53 +02:00
usr
virt KVM: make pid available for uevents without debugfs 2017-07-26 18:57:44 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS skd: Update maintainer information 2017-08-18 08:45:29 -06:00
Makefile Linux 4.13-rc2 2017-07-23 16:15:17 -07:00
README

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.