mirror of
git://nv-tegra.nvidia.com/linux-nvgpu.git
synced 2025-12-22 17:36:20 +03:00
5cbfb69b7e
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>
74 lines
1.5 KiB
C
74 lines
1.5 KiB
C
/*
|
|
* Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <linux/wait.h>
|
|
#include <linux/sched.h>
|
|
|
|
#include <nvgpu/cond.h>
|
|
|
|
int nvgpu_cond_init(struct nvgpu_cond *cond)
|
|
{
|
|
init_waitqueue_head(&cond->wq);
|
|
cond->initialized = true;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void nvgpu_cond_destroy(struct nvgpu_cond *cond)
|
|
{
|
|
cond->initialized = false;
|
|
}
|
|
|
|
int nvgpu_cond_signal(struct nvgpu_cond *cond)
|
|
{
|
|
if (!cond->initialized)
|
|
return -EINVAL;
|
|
|
|
wake_up(&cond->wq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int nvgpu_cond_signal_interruptible(struct nvgpu_cond *cond)
|
|
{
|
|
if (!cond->initialized)
|
|
return -EINVAL;
|
|
|
|
wake_up_interruptible(&cond->wq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int nvgpu_cond_broadcast(struct nvgpu_cond *cond)
|
|
{
|
|
if (!cond->initialized)
|
|
return -EINVAL;
|
|
|
|
wake_up_all(&cond->wq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int nvgpu_cond_broadcast_interruptible(struct nvgpu_cond *cond)
|
|
{
|
|
if (!cond->initialized)
|
|
return -EINVAL;
|
|
|
|
wake_up_interruptible_all(&cond->wq);
|
|
|
|
return 0;
|
|
}
|