diff options
author | Tao Ma <boyu.mt@taobao.com> | 2012-04-01 17:33:40 -0400 |
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committer | Jens Axboe <axboe@kernel.dk> | 2012-04-01 17:33:40 -0400 |
commit | 407ac95e2271a310016ced97f407676e79c53c06 (patch) | |
tree | f644750773554011a3cc7cbeebf5f14adf0a79ce /Documentation/ABI | |
parent | 5bf14c0727a07ded1bd9fa6d77923d7e6dc32833 (diff) |
Documentation: Add sysfs ABI change for cfq's target latency.
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'Documentation/ABI')
-rw-r--r-- | Documentation/ABI/testing/sysfs-cfq-target-latency | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-cfq-target-latency b/Documentation/ABI/testing/sysfs-cfq-target-latency new file mode 100644 index 000000000000..df0f7828c5e3 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-cfq-target-latency | |||
@@ -0,0 +1,8 @@ | |||
1 | What: /sys/block/<device>/iosched/target_latency | ||
2 | Date: March 2012 | ||
3 | contact: Tao Ma <boyu.mt@taobao.com> | ||
4 | Description: | ||
5 | The /sys/block/<device>/iosched/target_latency only exists | ||
6 | when the user sets cfq to /sys/block/<device>/scheduler. | ||
7 | It contains an estimated latency time for the cfq. cfq will | ||
8 | use it to calculate the time slice used for every task. | ||