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| author |   Souvik Banerjee <souvik1997@gmail.com> | 2018-03-30 14:32:42 -0500 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2018-03-30 14:16:24 -0600 |
| commit | a5040c2d8dd732252609cde84ee3cdd6f1b1f927 (patch) | |
| tree | dee51781faddd696e53e811dc9404b81cbd96803 /include/uapi/linux/blktrace_api.h | |
| parent | lightnvm: remove function name in strings (diff) | |
| download | linux-dev-a5040c2d8dd732252609cde84ee3cdd6f1b1f927.tar.xz linux-dev-a5040c2d8dd732252609cde84ee3cdd6f1b1f927.zip | |
blktrace: fix comment in blktrace_api.h
The `__u64 time` field of the blk_io_trace struct refers to
the time in nanoseconds, not in microseconds. It is set in
__blk_add_trace, which does the following:
t->time = ktime_to_ns(ktime_get());
ktime_to_ns returns ktime_t in nanoseconds, not microseconds.
Signed-off-by: Souvik Banerjee <souvik1997@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/uapi/linux/blktrace_api.h')
| -rw-r--r-- | include/uapi/linux/blktrace_api.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/uapi/linux/blktrace_api.h b/include/uapi/linux/blktrace_api.h index 3c50e07ee833..690621b610e5 100644 --- a/include/uapi/linux/blktrace_api.h +++ b/include/uapi/linux/blktrace_api.h @@ -101,7 +101,7 @@ enum blktrace_notify { struct blk_io_trace { __u32 magic; /* MAGIC << 8 | version */ __u32 sequence; /* event number */ - __u64 time; /* in microseconds */ + __u64 time; /* in nanoseconds */ __u64 sector; /* disk offset */ __u32 bytes; /* transfer length */ __u32 action; /* what happened */ |