tree: git://people.freedesktop.org/~agd5f/linux.git amd-staging-drm-next
head: 53d5f1e4a6d91457678a24b03d0a66edafb800ea
commit: 711c989d235ffd044fb04b971049e204b33fde3f [1/4] drm/scheduler: add a
list of run queues to the entity
New smatch warnings:
drivers/gpu/drm/scheduler/gpu_scheduler.c:195 drm_sched_entity_init() error:
potential null dereference 'entity->rq_list'. (kcalloc returns null)
Old smatch warnings:
include/asm-generic/atomic-instrumented.h:365 cmpxchg_size() error:
uninitialized symbol '__ret'.
vim +195 drivers/gpu/drm/scheduler/gpu_scheduler.c
160
161 /**
162 * drm_sched_entity_init - Init a context entity used by scheduler when
163 * submit to HW ring.
164 *
165 * @entity: scheduler entity to init
166 * @rq_list: the list of run queue on which jobs from this
167 * entity can be submitted
168 * @num_rq_list: number of run queue in rq_list
169 * @guilty: atomic_t set to 1 when a job on this queue
170 * is found to be guilty causing a timeout
171 *
172 * Note: the rq_list should have atleast one element to schedule
173 * the entity
174 *
175 * Returns 0 on success or a negative error code on failure.
176 */
177 int drm_sched_entity_init(struct drm_sched_entity *entity,
178 struct drm_sched_rq **rq_list,
179 unsigned int num_rq_list,
180 atomic_t *guilty)
181 {
182 int i;
183
184 if (!(entity && rq_list && num_rq_list > 0 && rq_list[0]))
185 return -EINVAL;
186
187 memset(entity, 0, sizeof(struct drm_sched_entity));
188 INIT_LIST_HEAD(&entity->list);
189 entity->rq = rq_list[0];
190 entity->guilty = guilty;
191 entity->num_rq_list = num_rq_list;
192 entity->rq_list = kcalloc(num_rq_list, sizeof(struct
drm_sched_rq *),
193 GFP_KERNEL);
194 for (i = 0; i < num_rq_list; ++i)
> 195 entity->rq_list[i] = rq_list[i];
196 entity->last_scheduled = NULL;
197
198 spin_lock_init(&entity->rq_lock);
199 spsc_queue_init(&entity->job_queue);
200
201 atomic_set(&entity->fence_seq, 0);
202 entity->fence_context = dma_fence_context_alloc(2);
203
204 return 0;
205 }
206 EXPORT_SYMBOL(drm_sched_entity_init);
207
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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