[Intel-gfx] [PATCH v2 01/24] drm/i915: Add some extra guards in evict_vm

[Daniel Vetter]

On Tue, Dec 23, 2014 at 05:16:04PM +0000, Michel Thierry wrote:
> From: Ben Widawsky <benjamin.widawsky at intel.com>
> 
> v2: Use WARN_ONs (Daniel)
> 
> Cc: Daniel Vetter <daniel at ffwll.ch>
> Signed-off-by: Ben Widawsky <ben at bwidawsk.net>
> Signed-off-by: Michel Thierry <michel.thierry at intel.com>

Nitpick: Please put in some indication about what you've changed since
this isn't precisly Ben's patch. Usually we go by putting a (v1) or
similar behind the relavant sob line. Just for next time around.
-Daniel
> ---
>  drivers/gpu/drm/i915/i915_gem_evict.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/i915_gem_evict.c b/drivers/gpu/drm/i915/i915_gem_evict.c
> index 886ff2e..3dc7b37 100644
> --- a/drivers/gpu/drm/i915/i915_gem_evict.c
> +++ b/drivers/gpu/drm/i915/i915_gem_evict.c
> @@ -214,6 +214,7 @@ int i915_gem_evict_vm(struct i915_address_space *vm, bool do_idle)
>  	struct i915_vma *vma, *next;
>  	int ret;
>  
> +	WARN_ON(!mutex_is_locked(&vm->dev->struct_mutex));
>  	trace_i915_gem_evict_vm(vm);
>  
>  	if (do_idle) {
> @@ -222,6 +223,8 @@ int i915_gem_evict_vm(struct i915_address_space *vm, bool do_idle)
>  			return ret;
>  
>  		i915_gem_retire_requests(vm->dev);
> +
> +		WARN_ON(!list_empty(&vm->active_list));
>  	}
>  
>  	list_for_each_entry_safe(vma, next, &vm->inactive_list, mm_list)
> -- 
> 2.1.1
> 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch