diff options
| author | Nayan Deshmukh | 2018-08-01 13:50:01 +0530 |
|---|---|---|
| committer | Alex Deucher | 2018-08-27 11:09:45 -0500 |
| commit | 97ffa35b5dec4e68baa85e626b69ae4949a4ca2a (patch) | |
| tree | a1224772b9f14934e31240212528ef1ab238604e /drivers/gpu/drm/scheduler | |
| parent | 249a07c05a8da9637c2eb3205f1fc739c216f707 (diff) | |
drm/scheduler: add new function to get least loaded sched v2
The function selects the run queue from the rq_list with the
least load. The load is decided by the number of jobs in a
scheduler.
v2: avoid using atomic read twice consecutively, instead store
it locally
Signed-off-by: Nayan Deshmukh <nayan26deshmukh@gmail.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/scheduler')
| -rw-r--r-- | drivers/gpu/drm/scheduler/gpu_scheduler.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/gpu/drm/scheduler/gpu_scheduler.c b/drivers/gpu/drm/scheduler/gpu_scheduler.c index 3b9969190927..3e13bdfa8710 100644 --- a/drivers/gpu/drm/scheduler/gpu_scheduler.c +++ b/drivers/gpu/drm/scheduler/gpu_scheduler.c @@ -241,6 +241,31 @@ static bool drm_sched_entity_is_ready(struct drm_sched_entity *entity) return true; } +/** + * drm_sched_entity_get_free_sched - Get the rq from rq_list with least load + * + * @entity: scheduler entity + * + * Return the pointer to the rq with least load. + */ +static struct drm_sched_rq * +drm_sched_entity_get_free_sched(struct drm_sched_entity *entity) +{ + struct drm_sched_rq *rq = NULL; + unsigned int min_jobs = UINT_MAX, num_jobs; + int i; + + for (i = 0; i < entity->num_rq_list; ++i) { + num_jobs = atomic_read(&entity->rq_list[i]->sched->num_jobs); + if (num_jobs < min_jobs) { + min_jobs = num_jobs; + rq = entity->rq_list[i]; + } + } + + return rq; +} + static void drm_sched_entity_kill_jobs_cb(struct dma_fence *f, struct dma_fence_cb *cb) { |