(gdb) l *i915_gem_free_request+0x50
0x14c30 is in i915_gem_free_request (include/linux/list.h:88).
83	 * This is only for internal list manipulation where we know
84	 * the prev/next entries already!
85	 */
86	static inline void __list_del(struct list_head * prev, struct list_head * next)
87	{
88		next->prev = prev;
89		prev->next = next;
90	}
91	
92	/**
(gdb) l *i915_gem_retire_requests_ring+0x65
0x15e75 is in i915_gem_retire_requests_ring (include/linux/list.h:188).
183	 * list_empty - tests whether a list is empty
184	 * @head: the list to test.
185	 */
186	static inline int list_empty(const struct list_head *head)
187	{
188		return head->next == head;
189	}
190	
191	/**
192	 * list_empty_careful - tests whether a list is empty and not being modified
(gdb) l *i915_gem_set_domain_ioctl+0x197
0x1c5b7 is in i915_gem_set_domain_ioctl (drivers/gpu/drm/i915/i915_gem.c:1154).
1149		 * Note that the last_write_seqno is always the earlier of
1150		 * the two (read/write) seqno, so if we haved successfully waited,
1151		 * we know we have passed the last write.
1152		 */
1153		obj->last_write_seqno = 0;
1154		obj->base.write_domain &= ~I915_GEM_GPU_DOMAINS;
1155	
1156		return 0;
1157	}
1158