[PATCH v3] drm/amdgpu: fix scheduler timeout calc

[Christian König]

Am 28.06.19 um 11:23 schrieb Cui, Flora:
> scheduler timeout is in jiffies
> v2: move timeout check to amdgpu_device_get_job_timeout_settings after
> parsing the value
> v3: add lockup_timeout param check. 0: keep default value. negative:
> infinity timeout.
>
> Change-Id: I26708c163db943ff8d930dd81bcab4b4b9d84eb2
> Signed-off-by: Flora Cui <flora.cui at amd.com>
> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 14 ++++++++++----
>   1 file changed, 10 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> index e74a175..0d667fa 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> @@ -245,7 +245,8 @@ module_param_named(msi, amdgpu_msi, int, 0444);
>    * By default(with no lockup_timeout settings), the timeout for all non-compute(GFX, SDMA and Video)
>    * jobs is 10000. And there is no timeout enforced on compute jobs.
>    */
> -MODULE_PARM_DESC(lockup_timeout, "GPU lockup timeout in ms (default: 10000 for non-compute jobs and no timeout for compute jobs), "
> +MODULE_PARM_DESC(lockup_timeout, "GPU lockup timeout in ms (default: 10000 for non-compute jobs and infinity timeout for compute jobs."
> +		" 0: keep default value. negative: infinity timeout), "
>   		"format is [Non-Compute] or [GFX,Compute,SDMA,Video]");
>   module_param_string(lockup_timeout, amdgpu_lockup_timeout, sizeof(amdgpu_lockup_timeout), 0444);
>   
> @@ -1300,7 +1301,9 @@ int amdgpu_device_get_job_timeout_settings(struct amdgpu_device *adev)
>   	 * By default timeout for non compute jobs is 10000.
>   	 * And there is no timeout enforced on compute jobs.
>   	 */
> -	adev->gfx_timeout = adev->sdma_timeout = adev->video_timeout = 10000;
> +	adev->gfx_timeout =
> +	adev->sdma_timeout =
> +	adev->video_timeout = msecs_to_jiffies(10000);

I would write this as:

adev->gfx_timeout = msecs_to_jiffies(10000);
adev->sdma_timeout = adev->video_timeout = adev->gfx_timeout;

Looks better than splitting this on multiple lines without any indentation.

Apart from that looks good to me,
Christian.

>   	adev->compute_timeout = MAX_SCHEDULE_TIMEOUT;
>   
>   	if (strnlen(input, AMDGPU_MAX_TIMEOUT_PARAM_LENTH)) {
> @@ -1310,10 +1313,13 @@ int amdgpu_device_get_job_timeout_settings(struct amdgpu_device *adev)
>   			if (ret)
>   				return ret;
>   
> -			/* Invalidate 0 and negative values */
> -			if (timeout <= 0) {
> +			if (timeout == 0) {
>   				index++;
>   				continue;
> +			} else if (timeout < 0) {
> +				timeout = MAX_SCHEDULE_TIMEOUT;
> +			} else {
> +				timeout = msecs_to_jiffies(timeout);
>   			}
>   
>   			switch (index++) {