diff options
| author | Li Zefan <lizf@cn.fujitsu.com> | 2009-03-20 09:49:08 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-03-21 16:16:54 +0100 |
| commit | 15152e448b693fa41de40f1e40ffbe717a3aab88 (patch) | |
| tree | 0fec87dd1850aa8e6e8be21bebb3ce0bd3bf148a /tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/Util.py | |
| parent | cbe28296eb1ac441b35cf45804d0ae808add7dd1 (diff) | |
blktrace: report EBUSY correctly
blk_trace_remove_queue() returns EINVAL if q->blk_trace == NULL,
but blk_trace_setup_queue() doesn't return EBUSY if
q->blk_trace != NULL.
# echo 0 > sdaX/trace/enable
# echo 0 > sdaX/trace/enable
bash: echo: write error: Invalid argument
# echo 1 > sdaX/trace/enable
# echo 1 > sdaX/trace/enable
(should return EBUSY)
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <49C2F614.2010101@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/Util.py')
0 files changed, 0 insertions, 0 deletions