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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c 
 kernel/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
....@@ -28,7 +28,6 @@
2828  *    Christian König <christian.koenig@amd.com>
2929  */
3030 
31
-#include <drm/drmP.h>
3231 #include "amdgpu.h"
3332 #include "amdgpu_trace.h"
3433 #include "amdgpu_amdkfd.h"
....@@ -36,7 +35,6 @@
3635 struct amdgpu_sync_entry {
3736 	struct hlist_node	node;
3837 	struct dma_fence	*fence;
39
-	bool	explicit;
4038 };
4139 
4240 static struct kmem_cache *amdgpu_sync_slab;
....@@ -130,7 +128,7 @@
130128  * Tries to add the fence to an existing hash entry. Returns true when an entry
131129  * was found, false otherwise.
132130  */
133
-static bool amdgpu_sync_add_later(struct amdgpu_sync *sync, struct dma_fence *f, bool explicit)
131
+static bool amdgpu_sync_add_later(struct amdgpu_sync *sync, struct dma_fence *f)
134132 {
135133 	struct amdgpu_sync_entry *e;
136134 
....@@ -139,10 +137,6 @@
139137 			continue;
140138 
141139 		amdgpu_sync_keep_later(&e->fence, f);
142
-
143
-		/* Preserve eplicit flag to not loose pipe line sync */
144
-		e->explicit |= explicit;
145
-
146140 		return true;
147141 	}
148142 	return false;
....@@ -152,28 +146,23 @@
152146  * amdgpu_sync_fence - remember to sync to this fence
153147  *
154148  * @sync: sync object to add fence to
155
- * @fence: fence to sync to
149
+ * @f: fence to sync to
156150  *
151
+ * Add the fence to the sync object.
157152  */
158
-int amdgpu_sync_fence(struct amdgpu_device *adev, struct amdgpu_sync *sync,
159
-		      struct dma_fence *f, bool explicit)
153
+int amdgpu_sync_fence(struct amdgpu_sync *sync, struct dma_fence *f)
160154 {
161155 	struct amdgpu_sync_entry *e;
162156 
163157 	if (!f)
164158 		return 0;
165
-	if (amdgpu_sync_same_dev(adev, f) &&
166
-	    amdgpu_sync_get_owner(f) == AMDGPU_FENCE_OWNER_VM)
167
-		amdgpu_sync_keep_later(&sync->last_vm_update, f);
168159 
169
-	if (amdgpu_sync_add_later(sync, f, explicit))
160
+	if (amdgpu_sync_add_later(sync, f))
170161 		return 0;
171162 
172163 	e = kmem_cache_alloc(amdgpu_sync_slab, GFP_KERNEL);
173164 	if (!e)
174165 		return -ENOMEM;
175
-
176
-	e->explicit = explicit;
177166 
178167 	hash_add(sync->fences, &e->node, f->context);
179168 	e->fence = dma_fence_get(f);
....@@ -181,22 +170,39 @@
181170 }
182171 
183172 /**
173
+ * amdgpu_sync_vm_fence - remember to sync to this VM fence
174
+ *
175
+ * @adev: amdgpu device
176
+ * @sync: sync object to add fence to
177
+ * @fence: the VM fence to add
178
+ *
179
+ * Add the fence to the sync object and remember it as VM update.
180
+ */
181
+int amdgpu_sync_vm_fence(struct amdgpu_sync *sync, struct dma_fence *fence)
182
+{
183
+	if (!fence)
184
+		return 0;
185
+
186
+	amdgpu_sync_keep_later(&sync->last_vm_update, fence);
187
+	return amdgpu_sync_fence(sync, fence);
188
+}
189
+
190
+/**
184191  * amdgpu_sync_resv - sync to a reservation object
185192  *
186193  * @sync: sync object to add fences from reservation object to
187194  * @resv: reservation object with embedded fence
188
- * @explicit_sync: true if we should only sync to the exclusive fence
195
+ * @mode: how owner affects which fences we sync to
196
+ * @owner: owner of the planned job submission
189197  *
190198  * Sync to the fence
191199  */
192
-int amdgpu_sync_resv(struct amdgpu_device *adev,
193
-		     struct amdgpu_sync *sync,
194
-		     struct reservation_object *resv,
195
-		     void *owner, bool explicit_sync)
200
+int amdgpu_sync_resv(struct amdgpu_device *adev, struct amdgpu_sync *sync,
201
+		     struct dma_resv *resv, enum amdgpu_sync_mode mode,
202
+		     void *owner)
196203 {
197
-	struct reservation_object_list *flist;
204
+	struct dma_resv_list *flist;
198205 	struct dma_fence *f;
199
-	void *fence_owner;
200206 	unsigned i;
201207 	int r = 0;
202208 
....@@ -204,43 +210,64 @@
204210 		return -EINVAL;
205211 
206212 	/* always sync to the exclusive fence */
207
-	f = reservation_object_get_excl(resv);
208
-	r = amdgpu_sync_fence(adev, sync, f, false);
213
+	f = dma_resv_get_excl(resv);
214
+	r = amdgpu_sync_fence(sync, f);
209215 
210
-	flist = reservation_object_get_list(resv);
216
+	flist = dma_resv_get_list(resv);
211217 	if (!flist || r)
212218 		return r;
213219 
214220 	for (i = 0; i < flist->shared_count; ++i) {
221
+		void *fence_owner;
222
+
215223 		f = rcu_dereference_protected(flist->shared[i],
216
-					      reservation_object_held(resv));
224
+					      dma_resv_held(resv));
225
+
226
+		fence_owner = amdgpu_sync_get_owner(f);
227
+
228
+		/* Always sync to moves, no matter what */
229
+		if (fence_owner == AMDGPU_FENCE_OWNER_UNDEFINED) {
230
+			r = amdgpu_sync_fence(sync, f);
231
+			if (r)
232
+				break;
233
+		}
234
+
217235 		/* We only want to trigger KFD eviction fences on
218236 		 * evict or move jobs. Skip KFD fences otherwise.
219237 		 */
220
-		fence_owner = amdgpu_sync_get_owner(f);
221238 		if (fence_owner == AMDGPU_FENCE_OWNER_KFD &&
222239 		    owner != AMDGPU_FENCE_OWNER_UNDEFINED)
223240 			continue;
224241 
225
-		if (amdgpu_sync_same_dev(adev, f)) {
226
-			/* VM updates are only interesting
227
-			 * for other VM updates and moves.
228
-			 */
229
-			if ((owner != AMDGPU_FENCE_OWNER_UNDEFINED) &&
230
-			    (fence_owner != AMDGPU_FENCE_OWNER_UNDEFINED) &&
231
-			    ((owner == AMDGPU_FENCE_OWNER_VM) !=
232
-			     (fence_owner == AMDGPU_FENCE_OWNER_VM)))
233
-				continue;
242
+		/* Never sync to VM updates either. */
243
+		if (fence_owner == AMDGPU_FENCE_OWNER_VM &&
244
+		    owner != AMDGPU_FENCE_OWNER_UNDEFINED)
245
+			continue;
234246 
235
-			/* Ignore fence from the same owner and explicit one as
236
-			 * long as it isn't undefined.
237
-			 */
238
-			if (owner != AMDGPU_FENCE_OWNER_UNDEFINED &&
239
-			    (fence_owner == owner || explicit_sync))
247
+		/* Ignore fences depending on the sync mode */
248
+		switch (mode) {
249
+		case AMDGPU_SYNC_ALWAYS:
250
+			break;
251
+
252
+		case AMDGPU_SYNC_NE_OWNER:
253
+			if (amdgpu_sync_same_dev(adev, f) &&
254
+			    fence_owner == owner)
240255 				continue;
256
+			break;
257
+
258
+		case AMDGPU_SYNC_EQ_OWNER:
259
+			if (amdgpu_sync_same_dev(adev, f) &&
260
+			    fence_owner != owner)
261
+				continue;
262
+			break;
263
+
264
+		case AMDGPU_SYNC_EXPLICIT:
265
+			continue;
241266 		}
242267 
243
-		r = amdgpu_sync_fence(adev, sync, f, false);
268
+		WARN(debug_evictions && fence_owner == AMDGPU_FENCE_OWNER_KFD,
269
+		     "Adding eviction fence to sync obj");
270
+		r = amdgpu_sync_fence(sync, f);
244271 		if (r)
245272 			break;
246273 	}
....@@ -295,11 +322,10 @@
295322  * amdgpu_sync_get_fence - get the next fence from the sync object
296323  *
297324  * @sync: sync object to use
298
- * @explicit: true if the next fence is explicit
299325  *
300326  * Get and removes the next fence from the sync object not signaled yet.
301327  */
302
-struct dma_fence *amdgpu_sync_get_fence(struct amdgpu_sync *sync, bool *explicit)
328
+struct dma_fence *amdgpu_sync_get_fence(struct amdgpu_sync *sync)
303329 {
304330 	struct amdgpu_sync_entry *e;
305331 	struct hlist_node *tmp;
....@@ -308,8 +334,6 @@
308334 	hash_for_each_safe(sync->fences, i, tmp, e, node) {
309335 
310336 		f = e->fence;
311
-		if (explicit)
312
-			*explicit = e->explicit;
313337 
314338 		hash_del(&e->node);
315339 		kmem_cache_free(amdgpu_sync_slab, e);
....@@ -341,7 +365,7 @@
341365 	hash_for_each_safe(source->fences, i, tmp, e, node) {
342366 		f = e->fence;
343367 		if (!dma_fence_is_signaled(f)) {
344
-			r = amdgpu_sync_fence(NULL, clone, f, e->explicit);
368
+			r = amdgpu_sync_fence(clone, f);
345369 			if (r)
346370 				return r;
347371 		} else {