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Commit 75bb4625 authored by Jens Axboe's avatar Jens Axboe
Browse files

blk-mq: add file comments and update copyright notices 



None of the blk-mq files have an explanatory comment at the top
for what that particular file does. Add that and add appropriate
copyright notices as well.

Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent d852564f

block/blk-mq-cpu.c

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/*

 * CPU notifier helper code for blk-mq

 *

 * Copyright (C) 2013-2014 Jens Axboe

 */

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/init.h>

block/blk-mq-cpumap.c

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/*

 * CPU <-> hardware queue mapping helpers

 *

 * Copyright (C) 2013-2014 Jens Axboe

 */

#include <linux/kernel.h>

#include <linux/threads.h>

#include <linux/module.h>

block/blk-mq-tag.c

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/*

 * Fast and scalable bitmap tagging variant. Uses sparser bitmaps spread

 * over multiple cachelines to avoid ping-pong between multiple submitters

 * or submitter and completer. Uses rolling wakeups to avoid falling of

 * the scaling cliff when we run out of tags and have to start putting

 * submitters to sleep.

 *

 * Uses active queue tracking to support fairer distribution of tags

 * between multiple submitters when a shared tag map is used.

 *

 * Copyright (C) 2013-2014 Jens Axboe

 */

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/random.h>

block/blk-mq.c

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/*

 * Block multiqueue core code

 *

 * Copyright (C) 2013-2014 Jens Axboe

 * Copyright (C) 2013-2014 Christoph Hellwig

 */

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/backing-dev.h>