From: Chris Wilson Date: Thu, 4 Aug 2016 06:52:41 +0000 (+0100) Subject: drm/i915: Double check activity before relocations X-Git-Tag: v4.9-rc1~41^2~40^2~72 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=909d074c31713dd1c43e8c7665f9e42791c672b8;p=linux.git drm/i915: Double check activity before relocations If the object is active and we need to perform a relocation upon it, we need to take the slow relocation path. Before we do, double check the active requests to see if they have completed. Signed-off-by: Chris Wilson Reviewed-by: Joonas Lahtinen Link: http://patchwork.freedesktop.org/patch/msgid/1470293567-10811-22-git-send-email-chris@chris-wilson.co.uk --- diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c index 5e1fb85b708b..2f7173d7a7b0 100644 --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c @@ -441,6 +441,20 @@ relocate_entry_clflush(struct drm_i915_gem_object *obj, return 0; } +static bool object_is_idle(struct drm_i915_gem_object *obj) +{ + unsigned long active = obj->active; + int idx; + + for_each_active(active, idx) { + if (!i915_gem_active_is_idle(&obj->last_read[idx], + &obj->base.dev->struct_mutex)) + return false; + } + + return true; +} + static int i915_gem_execbuffer_relocate_entry(struct drm_i915_gem_object *obj, struct eb_vmas *eb, @@ -524,7 +538,7 @@ i915_gem_execbuffer_relocate_entry(struct drm_i915_gem_object *obj, } /* We can't wait for rendering with pagefaults disabled */ - if (obj->active && pagefault_disabled()) + if (pagefault_disabled() && !object_is_idle(obj)) return -EFAULT; if (use_cpu_reloc(obj))