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| author |   Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> | 2021-02-21 21:29:56 -0800 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2021-02-22 06:37:41 -0700 |
| commit | 1f83bb4b491472310ae7aeca505ed3725149906c (patch) | |
| tree | 23d09ea4ecbf367b80179d46abf618a1bc1c4710 | |
| parent | block: remove superfluous param in blk_fill_rwbs() (diff) | |
| download | wireguard-linux-1f83bb4b491472310ae7aeca505ed3725149906c.tar.xz wireguard-linux-1f83bb4b491472310ae7aeca505ed3725149906c.zip | |
blktrace: add blk_fill_rwbs documentation comment
blk_fill_rwbs() is an expoted function, add kernel style documentation
comment.
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | include/linux/blktrace_api.h | 2 | ||||
| -rw-r--r-- | kernel/trace/blktrace.c | 10 |
2 files changed, 11 insertions, 1 deletions
diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h index 11484f1d19a1..e17d04abf6a3 100644 --- a/include/linux/blktrace_api.h +++ b/include/linux/blktrace_api.h @@ -119,7 +119,7 @@ struct compat_blk_user_trace_setup { #endif -extern void blk_fill_rwbs(char *rwbs, unsigned int op); +void blk_fill_rwbs(char *rwbs, unsigned int op); static inline sector_t blk_rq_trace_sector(struct request *rq) { diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c index 8a2591c7aa41..d7ebef83771c 100644 --- a/kernel/trace/blktrace.c +++ b/kernel/trace/blktrace.c @@ -1867,6 +1867,16 @@ void blk_trace_remove_sysfs(struct device *dev) #ifdef CONFIG_EVENT_TRACING +/** + * blk_fill_rwbs - Fill the buffer rwbs by mapping op to character string. + * @rwbs buffer to be filled + * @op: REQ_OP_XXX for the tracepoint + * + * Description: + * Maps the REQ_OP_XXX to character and fills the buffer provided by the + * caller with resulting string. + * + **/ void blk_fill_rwbs(char *rwbs, unsigned int op) { int i = 0; |