deadline: Allow 0ms deadline latency, increase the read speed

Change a timer compare from after to after-equals, thus allowing
0 timeout and making deadline schedule FIFO.

Change-Id: Ib85ef779c1d8184b4167d65557689c6e7cede5f0
Signed-off-by: xiaobing tu <xiaobing.tu@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Francisco Franco <franciscofranco.1990@gmail.com>
Revert "msm: Ammend use of interruptible threads"

This reverts commit e86a04ff2b652933d8869c63a37dcfc8b7414648.

Change-Id: I73278d87752b7bf039048590fa143caf7ec68c5a
Revert "msm: mdss: Use interruptible threads"

This reverts commit 001153a70a95f050982698fcad2368de4a0aa6e3.

Change-Id: I562aac81bee4e96a70478c73a6c41e15af2c6fe2
Revert "msm: Fix high load average from uninterruptible waits"

This reverts commit d1bdb53238f213a0ac59fab2321a8cb4ff988a2b.

Change-Id: Ie5f8fb72b53e58bcf837322d115e1ee5b6f8e1c6
msm: mdss: Use interruptible threads

Based on @cyanogen's findings, use interruptible threads to reduce
cpu load.

Change-Id: I820d8048a03349f9f3200c06e35749e918054896
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>