Deepak Nibade d4030081a8 gpu: nvgpu: gk20a: add submit_lock ...

Add submit mutex lock to avoid race conditions between submitting
a job, removing a job and submitting WFI

With this lock make below operations atomic :

during submit_gpfifo() -
1. getting new syncpt
2. inserting syncpt increment
3. submitting gpfifo
4. setting job completion interrupt

during submit_wfi() -
1. getting new syncpt
2. inserting syncpt increment when idle

during channel_update() -
1. checking the submit job completion
2. freeing the job if it is completed

Bug 1305024

Change-Id: I0e3c0b8906d83fd59642344626ffdf24fad2aaab
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/397670
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

2015-03-18 12:09:43 -07:00

..

nvgpu

gpu: nvgpu: gk20a: add submit_lock

2015-03-18 12:09:43 -07:00