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blk-mq: fix debugfs compilation issues

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This fixes a couple of problems:

1. In the !CONFIG_DEBUG_FS case, the stub definitions were bogus.
2. In the !CONFIG_BLOCK case, blk-mq-debugfs.c shouldn't be compiled at
   all.

Fix the stub definitions and add a CONFIG_BLK_DEBUG_FS Kconfig option.

Fixes: 07e4fead45 ("blk-mq: create debugfs directory tree")
Signed-off-by: Omar Sandoval <[email protected]>

Augment Kconfig description.

Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Omar Sandoval 2017-01-27 15:03:01 -07:00 • committed by Jens Axboe
commit 400f73b23f
3 changed files with 19 additions and 6 deletions
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12
block/Kconfig
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@ -147,6 +147,18 @@ config BLK_WBT_MQ
Multiqueue currently doesn't have support for IO scheduling,
enabling this option is recommended.
config BLK_DEBUG_FS
bool "Block layer debugging information in debugfs"
default y
depends on DEBUG_FS
---help---
Include block layer debugging information in debugfs. This information
is mostly useful for kernel developers, but it doesn't incur any cost
at runtime.
Unless you are building a kernel for a tiny system, you should
say Y here.
menu "Partition Types"
source "block/partitions/Kconfig"