[PATCH] drm/i915/gvt: To check whether workload scan and shadow has mutex hold

[Zhenyu Wang]

On 2017.07.04 14:53:03 +0800, Ping Gao wrote:
> The function workload scan and shadow have to hold the drm.struct_mutex
> before called. To avoid misusing of this function, add a lockdep assert
> in it.
> 
> Signed-off-by: Ping Gao <ping.a.gao at intel.com>
> ---
>  drivers/gpu/drm/i915/gvt/scheduler.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/gvt/scheduler.c b/drivers/gpu/drm/i915/gvt/scheduler.c
> index bd59c6d..ca1926d 100644
> --- a/drivers/gpu/drm/i915/gvt/scheduler.c
> +++ b/drivers/gpu/drm/i915/gvt/scheduler.c
> @@ -201,6 +201,8 @@ int intel_gvt_scan_and_shadow_workload(struct intel_vgpu_workload *workload)
>  	struct intel_vgpu *vgpu = workload->vgpu;
>  	int ret;
>  
> +	lockdep_assert_held(&dev_priv->drm.struct_mutex);
> +
>  	if (workload->shadowed)
>  		return 0;
>  

Applied, Thanks!

-- 
Open Source Technology Center, Intel ltd.

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