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authorTao Ma <boyu.mt@taobao.com>2011-03-03 18:53:20 +0300
committerJens Axboe <jaxboe@fusionio.com>2011-03-03 18:53:20 +0300
commit2d3a8497f8cc5aca14b722cd37d51f6c15ff9f74 (patch)
tree2e0013fdc1eec486a425e666a885b04a1c37befb /include/linux/blktrace_api.h
parent255bb490c8c27eed484d538efe6ef6a7473bd3f6 (diff)
downloadlinux-2d3a8497f8cc5aca14b722cd37d51f6c15ff9f74.tar.xz
blktrace: Remove blk_fill_rwbs_rq.
If we enable trace events to trace block actions, We use blk_fill_rwbs_rq to analyze the corresponding actions in request's cmd_flags, but we only choose the minor 2 bits from it, so most of other flags(e.g, REQ_SYNC) are missing. For example, with a sync write we get: write_test-2409 [001] 160.013869: block_rq_insert: 3,64 W 0 () 258135 + = 8 [write_test] Since now we have integrated the flags of both bio and request, it is safe to pass rq->cmd_flags directly to blk_fill_rwbs and blk_fill_rwbs_rq isn't needed any more. With this patch, after a sync write we get: write_test-2417 [000] 226.603878: block_rq_insert: 3,64 WS 0 () 258135 += 8 [write_test] Signed-off-by: Tao Ma <boyu.mt@taobao.com> Acked-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'include/linux/blktrace_api.h')
-rw-r--r--include/linux/blktrace_api.h1
1 files changed, 0 insertions, 1 deletions
diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h
index 3395cf7130f5..b22fb0d3db0f 100644
--- a/include/linux/blktrace_api.h
+++ b/include/linux/blktrace_api.h
@@ -245,7 +245,6 @@ static inline int blk_cmd_buf_len(struct request *rq)
extern void blk_dump_cmd(char *buf, struct request *rq);
extern void blk_fill_rwbs(char *rwbs, u32 rw, int bytes);
-extern void blk_fill_rwbs_rq(char *rwbs, struct request *rq);
#endif /* CONFIG_EVENT_TRACING && CONFIG_BLOCK */