nv-tegra-mirror/linux-nvgpu
1
0
Fork 0
mirror of git://nv-tegra.nvidia.com/linux-nvgpu.git synced 2025-12-24 10:34:43 +03:00
Code Issues Packages Projects Releases Wiki Activity

gpu: nvgpu: acquire mutex for notifier read

Browse Source 
We use &ch->error_notifier_mutex to protect
writes and free of error notifier
But we currently do not protect reading of
notifier in gk20a_fifo_set_ctx_mmu_error()
and vgpu_fifo_set_ctx_mmu_error()

Add new API gk20a_set_error_notifier_locked()
which is same as gk20a_set_error_notifier()
but without the locks.

In *_fifo_set_ctx_mmu_error() APIs, acquire
the mutex explicitly, and then use this new
API

gk20a_set_error_notifier() will now just call
gk20a_set_error_notifier_locked() within
a mutex

Bug 1824788
Bug 1844312

Change-Id: I1f3831dc63fe1daa761b2e17e4de3c155f505d6f
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1273471
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Richard Zhao <rizhao@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
This commit is contained in:
Deepak Nibade
2016-12-19 16:31:43 +05:30
committed by mobile promotions
parent f3d2dd4fd2
commit 505b442551
4 changed files with 24 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/gpu/nvgpu/gk20a/channel_gk20a.h
View File

@@ -235,6 +235,7 @@ void gk20a_disable_channel(struct channel_gk20a *ch);
void gk20a_channel_abort(struct channel_gk20a *ch, bool channel_preempt);
void gk20a_channel_abort_clean_up(struct channel_gk20a *ch);
void gk20a_set_error_notifier(struct channel_gk20a *ch, __u32 error);
void gk20a_set_error_notifier_locked(struct channel_gk20a *ch, __u32 error);
void gk20a_channel_semaphore_wakeup(struct gk20a *g, bool post_events);
int gk20a_channel_alloc_priv_cmdbuf(struct channel_gk20a *c, u32 size,
struct priv_cmd_entry *entry);