OpenCloudOS-Kernel/include/trace
Dave Chinner 455b286468 writeback: Initial tracing support
Trace queue/sched/exec parts of the writeback loop. This provides
insight into when and why flusher threads are scheduled to run. e.g
a sync invocation leaves traces like:

     sync-[...]: writeback_queue: bdi 8:0: sb_dev 8:1 nr_pages=7712 sync_mode=0 kupdate=0 range_cyclic=0 background=0
flush-8:0-[...]: writeback_exec: bdi 8:0: sb_dev 8:1 nr_pages=7712 sync_mode=0 kupdate=0 range_cyclic=0 background=0

This also lays the foundation for adding more writeback tracing to
provide deeper insight into the whole writeback path.

The original tracing code is from Jens Axboe, though this version is
a rewrite as a result of the code being traced changing
significantly.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-08-07 18:24:23 +02:00
..
events writeback: Initial tracing support 2010-08-07 18:24:23 +02:00
boot.h tracing/fastboot: include missing headers 2008-12-12 09:26:13 +01:00
define_trace.h tracing: Fix tracepoint.h DECLARE_TRACE() to allow more than one header 2010-05-05 11:46:17 -04:00
ftrace.h perf_events, trace: Fix probe unregister race 2010-05-31 08:46:09 +02:00
syscall.h tracing: Allow events to share their print functions 2010-05-14 14:20:32 -04:00