aboutsummaryrefslogtreecommitdiffstats
path: root/include/trace
diff options
context:
space:
mode:
authorArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2010-07-25 14:29:24 +0300
committerJens Axboe <jaxboe@fusionio.com>2010-08-07 18:53:56 +0200
commit603320239fb436f175c8b6bfa43d5023c47a6dc2 (patch)
treeefe1e78de6c2b8029cdcdcad2e98e3ef6c017900 /include/trace
parentb5048a6cb5455a16bdff26a4c5ae9534f070d94c (diff)
downloadmrst-s0i3-test-603320239fb436f175c8b6bfa43d5023c47a6dc2.tar.gz
mrst-s0i3-test-603320239fb436f175c8b6bfa43d5023c47a6dc2.tar.xz
mrst-s0i3-test-603320239fb436f175c8b6bfa43d5023c47a6dc2.zip
writeback: add new tracepoints
Add 2 new trace points to the periodic write-back wake up case, just like we do in the 'bdi_queue_work()' function. Namely, introduce: 1. trace_writeback_wake_thread(bdi) 2. trace_writeback_wake_forker_thread(bdi) The first event is triggered every time we wake up a bdi thread to start periodic background write-out. The second event is triggered only when the bdi thread does not exist and should be created by the forker thread. This patch was suggested by Dave Chinner and Christoph Hellwig. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'include/trace')
-rw-r--r--include/trace/events/writeback.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/trace/events/writeback.h b/include/trace/events/writeback.h
index 84ab72df953..f345f66ae9d 100644
--- a/include/trace/events/writeback.h
+++ b/include/trace/events/writeback.h
@@ -81,6 +81,8 @@ DEFINE_EVENT(writeback_class, name, \
TP_ARGS(bdi))
DEFINE_WRITEBACK_EVENT(writeback_nowork);
+DEFINE_WRITEBACK_EVENT(writeback_wake_thread);
+DEFINE_WRITEBACK_EVENT(writeback_wake_forker_thread);
DEFINE_WRITEBACK_EVENT(writeback_bdi_register);
DEFINE_WRITEBACK_EVENT(writeback_bdi_unregister);
DEFINE_WRITEBACK_EVENT(writeback_thread_start);