From ecff665f5e3f1c6909353e00b9420e45ae23d995 Mon Sep 17 00:00:00 2001
From: Maarten Lankhorst <m.b.lankhorst@gmail.com>
Date: Thu, 27 Jun 2013 13:48:17 +0200
Subject: drm/ttm: make ttm reservation calls behave like reservation calls

This commit converts the source of the val_seq counter to
the ww_mutex api. The reservation objects are converted later,
because there is still a lockdep splat in nouveau that has to
resolved first.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
---
 include/drm/ttm/ttm_execbuf_util.h | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

(limited to 'include/drm/ttm/ttm_execbuf_util.h')

diff --git a/include/drm/ttm/ttm_execbuf_util.h b/include/drm/ttm/ttm_execbuf_util.h
index 547e19f06e57..ba71ef91f4d5 100644
--- a/include/drm/ttm/ttm_execbuf_util.h
+++ b/include/drm/ttm/ttm_execbuf_util.h
@@ -33,6 +33,7 @@
 
 #include <ttm/ttm_bo_api.h>
 #include <linux/list.h>
+#include <linux/reservation.h>
 
 /**
  * struct ttm_validate_buffer
@@ -57,17 +58,20 @@ struct ttm_validate_buffer {
 /**
  * function ttm_eu_backoff_reservation
  *
+ * @ticket:   ww_acquire_ctx from reserve call
  * @list:     thread private list of ttm_validate_buffer structs.
  *
  * Undoes all buffer validation reservations for bos pointed to by
  * the list entries.
  */
 
-extern void ttm_eu_backoff_reservation(struct list_head *list);
+extern void ttm_eu_backoff_reservation(struct ww_acquire_ctx *ticket,
+				       struct list_head *list);
 
 /**
  * function ttm_eu_reserve_buffers
  *
+ * @ticket:  [out] ww_acquire_ctx returned by call.
  * @list:    thread private list of ttm_validate_buffer structs.
  *
  * Tries to reserve bos pointed to by the list entries for validation.
@@ -90,11 +94,13 @@ extern void ttm_eu_backoff_reservation(struct list_head *list);
  * has failed.
  */
 
-extern int ttm_eu_reserve_buffers(struct list_head *list);
+extern int ttm_eu_reserve_buffers(struct ww_acquire_ctx *ticket,
+				  struct list_head *list);
 
 /**
  * function ttm_eu_fence_buffer_objects.
  *
+ * @ticket:      ww_acquire_ctx from reserve call
  * @list:        thread private list of ttm_validate_buffer structs.
  * @sync_obj:    The new sync object for the buffers.
  *
@@ -104,6 +110,7 @@ extern int ttm_eu_reserve_buffers(struct list_head *list);
  *
  */
 
-extern void ttm_eu_fence_buffer_objects(struct list_head *list, void *sync_obj);
+extern void ttm_eu_fence_buffer_objects(struct ww_acquire_ctx *ticket,
+					struct list_head *list, void *sync_obj);
 
 #endif
-- 
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