Konsta Holtta 17451138cf gpu: nvgpu: hold ch ref when getting ch from fd ...

Fix a race condition in gk20a_get_channel_from_file() that returns a
channel pointer from an fd: take a reference to the channel before
putting the file ref back. Now the caller is responsible of releasing
the channel reference eventually.

Also document why dbg_session_channel_data has to hold a ref to the
channel file instead of just the channel: that might deadlock if the fds
were closed in "wrong" order.

Change-Id: I8e91b809f5f7b1cb0c1487bd955ad6d643727a53
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1549290
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

2017-09-11 10:34:57 -07:00

..

falcon

gpu: nvgpu: falcon bootstrap support

2017-07-05 23:25:27 -07:00

linux

gpu: nvgpu: hold ch ref when getting ch from fd

2017-09-11 10:34:57 -07:00

mm

gpu: nvgpu: Fix blockcount in lockless allocator

2017-09-07 20:07:11 -07:00

pmu

gpu: nvgpu: NVGPU abstraction for ACCESS_ONCE

2017-09-03 14:26:27 -07:00

vbios

gpu: nvgpu: PG503 support

2017-08-11 11:07:17 -07:00

as.c

gpu: nvgpu: Per chip default big page size

2017-06-30 18:34:59 -07:00

bus.c

gpu: nvgpu: Move time correlation to common code

2017-06-20 11:35:17 -07:00

enabled.c

gpu: nvgpu: Begin removing variables in struct gk20a

2017-05-30 13:24:35 -07:00

ltc.c

gpu: nvgpu: Make LTC disabling common code

2017-08-04 09:23:56 -07:00

pramin.c

gpu: nvgpu: Fix offset units in PRAMIN code

2017-08-14 01:00:26 -07:00

rbtree.c

gpu: nvgpu: add rbtree implementation

2017-04-06 10:57:22 -07:00

semaphore.c

gpu: nvgpu: Replace kref for refcounting in nvgpu

2017-08-24 01:10:37 -07:00