From: Omar Sandoval <osandov@xxxxxx>
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: 07e4fead45e6 ("blk-mq: create debugfs directory tree")
Signed-off-by: Omar Sandoval <osandov@xxxxxx>
---
block/Kconfig | 9 +++++++++
block/Makefile | 2 +-
block/blk-mq.h | 11 ++++++-----
3 files changed, 16 insertions(+), 6 deletions(-)
diff --git a/block/Kconfig b/block/Kconfig
index 8bf114a3858a..0a31ed745258 100644
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -147,6 +147,15 @@ 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 only useful for kernel developers, but it doesn't incur any cost at
+ runtime.
+
menu "Partition Types"
source "block/partitions/Kconfig"
diff --git a/block/Makefile b/block/Makefile
index 6cabe6bd2882..317165f8708c 100644
--- a/block/Makefile
+++ b/block/Makefile
@@ -26,4 +26,4 @@ obj-$(CONFIG_BLK_DEV_INTEGRITY) += bio-integrity.o blk-integrity.o t10-pi.o
obj-$(CONFIG_BLK_MQ_PCI) += blk-mq-pci.o
obj-$(CONFIG_BLK_DEV_ZONED) += blk-zoned.o
obj-$(CONFIG_BLK_WBT) += blk-wbt.o
-obj-$(CONFIG_DEBUG_FS) += blk-mq-debugfs.o
+obj-$(CONFIG_BLK_DEBUG_FS) += blk-mq-debugfs.o
diff --git a/block/blk-mq.h b/block/blk-mq.h
index 57cdbf6c0cee..b52abd62b1b0 100644
--- a/block/blk-mq.h
+++ b/block/blk-mq.h
@@ -84,7 +84,7 @@ extern void blk_mq_hctx_kobj_init(struct blk_mq_hw_ctx *hctx);
/*
* debugfs helpers
*/
-#ifdef CONFIG_DEBUG_FS
+#ifdef CONFIG_BLK_DEBUG_FS
void blk_mq_debugfs_init(void);
int blk_mq_debugfs_register(struct request_queue *q, const char *name);
void blk_mq_debugfs_unregister(struct request_queue *q);
@@ -95,21 +95,22 @@ static inline void blk_mq_debugfs_init(void)
{
}
-int blk_mq_debugfs_register(struct request_queue *q, const char *name);
+static inline int blk_mq_debugfs_register(struct request_queue *q,
+ const char *name)
{
return 0;
}
-void blk_mq_debugfs_unregister(struct request_queue *q)
+static inline void blk_mq_debugfs_unregister(struct request_queue *q)
{
}
-int blk_mq_debugfs_register_hctxs(struct request_queue *q)
+static inline int blk_mq_debugfs_register_hctxs(struct request_queue *q)
{
return 0;
}
-void blk_mq_debugfs_unregister_hctxs(struct request_queue *q)
+static inline void blk_mq_debugfs_unregister_hctxs(struct request_queue *q)
{
}
#endif
--
2.11.0
--
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