drm/i915: Keep a list of all contexts

I have implemented this patch before without creating a separate list
(I'm having trouble finding the links, but the messages ids are:
<1364942743-6041-2-git-send-email-ben@bwidawsk.net>
<1365118914-15753-9-git-send-email-ben@bwidawsk.net>)

However, the code is much simpler to just use a list and it makes the
code from the next patch a lot more pretty.

As you'll see in the next patch, the reason for this is to be able to
specify when a context needs to get L3 remapping. More details there.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 0c39805b881e..179592762537 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -605,6 +605,8 @@ struct i915_hw_context {
         struct intel_ring_buffer *ring;
         struct drm_i915_gem_object *obj;
         struct i915_ctx_hang_stats hang_stats;
+
+        struct list_head link;
 };
 
 struct i915_fbc {
@@ -1343,6 +1345,7 @@ typedef struct drm_i915_private {
 
         bool hw_contexts_disabled;
         uint32_t hw_context_size;
+        struct list_head context_list;
 
         u32 fdi_rx_config;