From: Souvik Banerjee Date: Fri, 30 Mar 2018 19:32:42 +0000 (-0500) Subject: blktrace: fix comment in blktrace_api.h X-Git-Tag: for-4.17/block-20180402~1 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=a5040c2d8dd732252609cde84ee3cdd6f1b1f927;p=linux-2.6-block.git 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 Signed-off-by: Jens Axboe --- 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 */