lkml.org 
[lkml]   [2012]   [Mar]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH V2 2/2] Documentation: Add sysfs ABI change for cfq's target latency.
Date
From: Tao Ma <boyu.mt@taobao.com>

Cc: Jens Axboe <axboe@kernel.dk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Tao Ma <boyu.mt@taobao.com>
---
Documentation/ABI/testing/sysfs-cfq-target-latency | 8 ++++++++
1 files changed, 8 insertions(+), 0 deletions(-)
create mode 100644 Documentation/ABI/testing/sysfs-cfq-target-latency
diff --git a/Documentation/ABI/testing/sysfs-cfq-target-latency b/Documentation/ABI/testing/sysfs-cfq-target-latency
new file mode 100644
index 0000000..df0f782
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-cfq-target-latency
@@ -0,0 +1,8 @@
+What: /sys/block/<device>/iosched/target_latency
+Date: March 2012
+contact: Tao Ma <boyu.mt@taobao.com>
+Description:
+ The /sys/block/<device>/iosched/target_latency only exists
+ when the user sets cfq to /sys/block/<device>/scheduler.
+ It contains an estimated latency time for the cfq. cfq will
+ use it to calculate the time slice used for every task.
--
1.7.0.4


\
 
 \ /
  Last update: 2012-03-31 17:33    [from the cache]
©2003-2011 Jasper Spaans