Messages in this thread Patch in this message | | | Date | Wed, 25 Mar 2009 11:54:26 GMT | From | Li Zefan <> | Subject | [tip:tracing/blktrace] blktrace: fix timestamp in binary output |
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Commit-ID: d8708d61b1d4e70f2dd2ff0896bded28a7ca0ea4 Gitweb: http://git.kernel.org/tip/d8708d61b1d4e70f2dd2ff0896bded28a7ca0ea4 Author: Li Zefan <lizf@cn.fujitsu.com> AuthorDate: Wed, 25 Mar 2009 17:18:56 +0800 Committer: Ingo Molnar <mingo@elte.hu> CommitDate: Wed, 25 Mar 2009 12:05:38 +0100
blktrace: fix timestamp in binary output
I found the timestamp is wrong:
# echo bin > trace_option # echo blk > current_tracer # cat trace_pipe | blkparse -i - 8,0 0 0 0.000000000 504 A W ... ... 8,7 1 0 0.008534097 0 C R ... (should be 8.534097xxx)
user-space blkparse expects the timestamp to be nanosecond.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Jens Axboe <jens.axboe@oracle.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <49C9F700.9070609@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
--- kernel/trace/blktrace.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c index 6fb274f..ee7a8bb 100644 --- a/kernel/trace/blktrace.c +++ b/kernel/trace/blktrace.c @@ -1168,7 +1168,7 @@ static int blk_trace_synthesize_old_trace(struct trace_iterator *iter) const int offset = offsetof(struct blk_io_trace, sector); struct blk_io_trace old = { .magic = BLK_IO_TRACE_MAGIC | BLK_IO_TRACE_VERSION, - .time = ns2usecs(iter->ts), + .time = iter->ts, }; if (!trace_seq_putmem(s, &old, offset))
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