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From: "Christian König" <ckoenig.leichtzumerken-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org,
	dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: [PATCH 3/8] dma-buf: test shared slot allocation when mutex debugging is active
Date: Thu,  4 Oct 2018 15:12:45 +0200	[thread overview]
Message-ID: <20181004131250.2373-3-christian.koenig@amd.com> (raw)
In-Reply-To: <20181004131250.2373-1-christian.koenig-5C7GfCeVMHo@public.gmane.org>

Set shared_max to the number of shared fences right before we release
the lock.

This way every attempt to add a shared fence without previously
reserving a slot will cause an error.

Signed-off-by: Christian König <christian.koenig@amd.com>
---
 include/linux/reservation.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/reservation.h b/include/linux/reservation.h
index 5ddb0e143721..2f0ffca35780 100644
--- a/include/linux/reservation.h
+++ b/include/linux/reservation.h
@@ -214,6 +214,11 @@ reservation_object_trylock(struct reservation_object *obj)
 static inline void
 reservation_object_unlock(struct reservation_object *obj)
 {
+#ifdef CONFIG_DEBUG_MUTEXES
+	/* Test shared fence slot reservation */
+	if (obj->fence)
+		obj->fence->shared_max = obj->fence->shared_count;
+#endif
 	ww_mutex_unlock(&obj->lock);
 }
 
-- 
2.14.1

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  parent reply	other threads:[~2018-10-04 13:12 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-04 13:12 [PATCH 1/8] dma-buf: remove shared fence staging in reservation object Christian König
2018-10-04 13:12 ` [PATCH 4/8] drm/ttm: allow reserving more than one shared slot v2 Christian König
2018-10-04 13:12 ` [PATCH 7/8] drm/amdgpu: always reserve one more shared slot for pipelined BO moves Christian König
     [not found] ` <20181004131250.2373-1-christian.koenig-5C7GfCeVMHo@public.gmane.org>
2018-10-04 13:12   ` [PATCH 2/8] dma-buf: allow reserving more than one shared fence slot Christian König
2018-10-04 13:12   ` Christian König [this message]
2018-10-04 13:12   ` [PATCH 5/8] drm/amdgpu: fix using shared fence for exported BOs v2 Christian König
     [not found]     ` <20181004131250.2373-5-christian.koenig-5C7GfCeVMHo@public.gmane.org>
2018-10-23 13:40       ` Michel Dänzer
2018-10-04 13:12   ` [PATCH 6/8] drm/amdgpu: always reserve two slots for the VM Christian König
     [not found]     ` <20181004131250.2373-6-christian.koenig-5C7GfCeVMHo@public.gmane.org>
2018-10-24  5:27       ` Zhang, Jerry(Junwei)
2018-10-04 13:12   ` [PATCH 8/8] drm/ttm: drop the extra reservation for pipelined BO moves Christian König
2018-10-12  8:22   ` [PATCH 1/8] dma-buf: remove shared fence staging in reservation object Christian König
     [not found]     ` <30ba1fc8-58d5-1c75-406e-d10e68ec4b18-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-10-23 12:20       ` Christian König
     [not found]         ` <42ee3d74-9dac-6573-448c-c70ea28cb9ff-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-10-23 13:40           ` Michel Dänzer
2018-10-24  5:12           ` Huang, Ray
2018-10-24 11:10           ` Huang, Ray
2018-10-24  5:25   ` Zhang, Jerry(Junwei)
2018-10-25 20:15 ` Chris Wilson
2018-10-25 20:20   ` Chris Wilson
2018-10-25 21:21     ` Chris Wilson
2018-10-26  8:01       ` Christian König

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