diff options
author | Terje Bergstrom <tbergstrom@nvidia.com> | 2017-04-25 15:56:38 -0400 |
---|---|---|
committer | mobile promotions <svcmobile_promotions@nvidia.com> | 2017-05-12 19:09:05 -0400 |
commit | 5cbfb69b7ee41507e0ca24c0bc8c7da446784267 (patch) | |
tree | 2924fb67383a14e0ce66f81672f9fb2319eb9227 /drivers/gpu/nvgpu/common | |
parent | 3d9b7847d971ba405bf5459fd01bf60ae694300a (diff) |
gpu: nvgpu: Abstract condition variable
Add implementation for an abstracted condition variable. Implement it
using wait queue in Linux.
JIRA NVGPU-14
Change-Id: I211c590cca940ffc31d6c52141689f23f231e7da
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/1469763
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Diffstat (limited to 'drivers/gpu/nvgpu/common')
-rw-r--r-- | drivers/gpu/nvgpu/common/linux/cond.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/drivers/gpu/nvgpu/common/linux/cond.c b/drivers/gpu/nvgpu/common/linux/cond.c new file mode 100644 index 00000000..633c34fd --- /dev/null +++ b/drivers/gpu/nvgpu/common/linux/cond.c | |||
@@ -0,0 +1,73 @@ | |||
1 | /* | ||
2 | * Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved. | ||
3 | * | ||
4 | * This program is free software; you can redistribute it and/or modify it | ||
5 | * under the terms and conditions of the GNU General Public License, | ||
6 | * version 2, as published by the Free Software Foundation. | ||
7 | * | ||
8 | * This program is distributed in the hope it will be useful, but WITHOUT | ||
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | ||
11 | * more details. | ||
12 | * | ||
13 | * You should have received a copy of the GNU General Public License | ||
14 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
15 | */ | ||
16 | |||
17 | #include <linux/wait.h> | ||
18 | #include <linux/sched.h> | ||
19 | |||
20 | #include <nvgpu/cond.h> | ||
21 | |||
22 | int nvgpu_cond_init(struct nvgpu_cond *cond) | ||
23 | { | ||
24 | init_waitqueue_head(&cond->wq); | ||
25 | cond->initialized = true; | ||
26 | |||
27 | return 0; | ||
28 | } | ||
29 | |||
30 | void nvgpu_cond_destroy(struct nvgpu_cond *cond) | ||
31 | { | ||
32 | cond->initialized = false; | ||
33 | } | ||
34 | |||
35 | int nvgpu_cond_signal(struct nvgpu_cond *cond) | ||
36 | { | ||
37 | if (!cond->initialized) | ||
38 | return -EINVAL; | ||
39 | |||
40 | wake_up(&cond->wq); | ||
41 | |||
42 | return 0; | ||
43 | } | ||
44 | |||
45 | int nvgpu_cond_signal_interruptible(struct nvgpu_cond *cond) | ||
46 | { | ||
47 | if (!cond->initialized) | ||
48 | return -EINVAL; | ||
49 | |||
50 | wake_up_interruptible(&cond->wq); | ||
51 | |||
52 | return 0; | ||
53 | } | ||
54 | |||
55 | int nvgpu_cond_broadcast(struct nvgpu_cond *cond) | ||
56 | { | ||
57 | if (!cond->initialized) | ||
58 | return -EINVAL; | ||
59 | |||
60 | wake_up_all(&cond->wq); | ||
61 | |||
62 | return 0; | ||
63 | } | ||
64 | |||
65 | int nvgpu_cond_broadcast_interruptible(struct nvgpu_cond *cond) | ||
66 | { | ||
67 | if (!cond->initialized) | ||
68 | return -EINVAL; | ||
69 | |||
70 | wake_up_interruptible_all(&cond->wq); | ||
71 | |||
72 | return 0; | ||
73 | } | ||