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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>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Li Zefan 2009-03-25 17:18:56 +08:00 committed by Ingo Molnar
parent 093419971e
commit 6c051ce030
1 changed files with 1 additions and 1 deletions
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2
kernel/trace/blktrace.c
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@ -1168,7 +1168,7 @@ static int blk_trace_synthesize_old_trace(struct trace_iterator *iter)
const int offset = offsetof(struct blk_io_trace, sector); const int offset = offsetof(struct blk_io_trace, sector);
struct blk_io_trace old = { struct blk_io_trace old = {
.magic = BLK_IO_TRACE_MAGIC | BLK_IO_TRACE_VERSION, .magic = BLK_IO_TRACE_MAGIC | BLK_IO_TRACE_VERSION,
.time = ns2usecs(iter->ts), .time = iter->ts,
}; };
if (!trace_seq_putmem(s, &old, offset)) if (!trace_seq_putmem(s, &old, offset))