Deepak Nibade 1002f40a3b gpu: nvgpu: cancel job clean up before aborting channel ...

It is possible that when we abort the channel, we have
job clean up worker running, which could race with abort
and sometimes result in below panic

[  245.483566] Unable to handle kernel paging request at virtual address
800000000
...
[  245.548991] PC is at gk20a_channel_abort_clean_up+0xb8/0x140
[  245.554683] LR is at gk20a_channel_abort_clean_up+0xac/0x140
...
[  247.301860] [<ffffffc000479390>]
gk20a_channel_abort_clean_up+0xb8/0x140
[  247.312853] [<ffffffc0004794d4>] gk20a_channel_abort+0xbc/0xc8
[  247.322970] [<ffffffc0004794f8>] gk20a_disable_channel+0x18/0x30
[  247.333267] [<ffffffc000479628>] gk20a_free_channel+0x118/0x584
[  247.343473] [<ffffffc000479aa0>] gk20a_channel_close+0xc/0x14
[  247.353479] [<ffffffc000479b80>] gk20a_channel_release+0xd8/0x104

Fix this by cancelling the job clean up worker before aborting
the channel

Bug 1777281

Change-Id: Ic24c7c03b27cfb5cd164a52efdb1e2813a41a10a
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1174416
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

2016-07-04 01:02:00 -07:00

..

gpu/nvgpu

gpu: nvgpu: cancel job clean up before aborting channel

2016-07-04 01:02:00 -07:00