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| author |   Bart Van Assche <bvanassche@acm.org> | 2018-09-26 14:01:03 -0700 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2018-09-26 15:11:28 -0600 |
| commit | bca6b067b0b269a7b8ba129e2a918309ca8b4a55 (patch) | |
| tree | 8c41db994ddaf2023d881189cd947fce24f3b7d3 /include/linux/blkdev.h | |
| parent | xen: don't include <xen/xen.h> from <asm/io.h> and <asm/dma-mapping.h> (diff) | |
| download | linux-dev-bca6b067b0b269a7b8ba129e2a918309ca8b4a55.tar.xz linux-dev-bca6b067b0b269a7b8ba129e2a918309ca8b4a55.zip | |
block: Move power management code into a new source file
Move the code for runtime power management from blk-core.c into the
new source file blk-pm.c. Move the corresponding declarations from
<linux/blkdev.h> into <linux/blk-pm.h>. For CONFIG_PM=n, leave out
the declarations of the functions that are not used in that mode.
This patch not only reduces the number of #ifdefs in the block layer
core code but also reduces the size of header file <linux/blkdev.h>
and hence should help to reduce the build time of the Linux kernel
if CONFIG_PM is not defined.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Jianchao Wang <jianchao.w.wang@oracle.com>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/blkdev.h')
| -rw-r--r-- | include/linux/blkdev.h | 23 |
1 files changed, 0 insertions, 23 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 1d5e14139795..cd863511dedb 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1281,29 +1281,6 @@ extern void blk_put_queue(struct request_queue *); extern void blk_set_queue_dying(struct request_queue *); /* - * block layer runtime pm functions - */ -#ifdef CONFIG_PM -extern void blk_pm_runtime_init(struct request_queue *q, struct device *dev); -extern int blk_pre_runtime_suspend(struct request_queue *q); -extern void blk_post_runtime_suspend(struct request_queue *q, int err); -extern void blk_pre_runtime_resume(struct request_queue *q); -extern void blk_post_runtime_resume(struct request_queue *q, int err); -extern void blk_set_runtime_active(struct request_queue *q); -#else -static inline void blk_pm_runtime_init(struct request_queue *q, - struct device *dev) {} -static inline int blk_pre_runtime_suspend(struct request_queue *q) -{ - return -ENOSYS; -} -static inline void blk_post_runtime_suspend(struct request_queue *q, int err) {} -static inline void blk_pre_runtime_resume(struct request_queue *q) {} -static inline void blk_post_runtime_resume(struct request_queue *q, int err) {} -static inline void blk_set_runtime_active(struct request_queue *q) {} -#endif - -/* * blk_plug permits building a queue of related requests by holding the I/O * fragments for a short period. This allows merging of sequential requests * into single larger request. As the requests are moved from a per-task list to |