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| author | Matthew Brost <matthew.brost@intel.com> | 2023-01-13 01:25:14 +0300 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2023-12-12 22:06:00 +0300 |
| commit | 765b65e5bde79a9e8332c58f54a98e20fdb25fc7 (patch) | |
| tree | ffded2ad171d82adc5de746e5b91b47fa5956512 /drivers/gpu/drm/xe/xe_sched_job.c | |
| parent | e9d285ff9d4998d20790395adc8a62f283bdb72b (diff) | |
| download | linux-765b65e5bde79a9e8332c58f54a98e20fdb25fc7.tar.xz | |
drm/xe: Take memory ref on kernel job creation
When a job is inflight we may access memory to read the hardware seqno.
All user jobs have VM open which has a ref but kernel jobs do not
require VM so it is possible to not have memory ref. To avoid this, take
a memory ref on kernel job creation.
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'drivers/gpu/drm/xe/xe_sched_job.c')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_sched_job.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/gpu/drm/xe/xe_sched_job.c b/drivers/gpu/drm/xe/xe_sched_job.c index ab81bfe17e8a..d9add0370a98 100644 --- a/drivers/gpu/drm/xe/xe_sched_job.c +++ b/drivers/gpu/drm/xe/xe_sched_job.c @@ -8,7 +8,7 @@ #include <linux/dma-fence-array.h> #include <linux/slab.h> -#include "xe_device_types.h" +#include "xe_device.h" #include "xe_engine.h" #include "xe_gt.h" #include "xe_hw_engine_types.h" @@ -72,6 +72,11 @@ static void job_free(struct xe_sched_job *job) xe_sched_job_parallel_slab : xe_sched_job_slab, job); } +static struct xe_device *job_to_xe(struct xe_sched_job *job) +{ + return gt_to_xe(job->engine->gt); +} + struct xe_sched_job *xe_sched_job_create(struct xe_engine *e, u64 *batch_addr) { @@ -149,6 +154,11 @@ struct xe_sched_job *xe_sched_job_create(struct xe_engine *e, for (i = 0; i < width; ++i) job->batch_addr[i] = batch_addr[i]; + /* All other jobs require a VM to be open which has a ref */ + if (unlikely(e->flags & ENGINE_FLAG_KERNEL)) + xe_device_mem_access_get(job_to_xe(job)); + xe_device_assert_mem_access(job_to_xe(job)); + trace_xe_sched_job_create(job); return job; @@ -178,6 +188,8 @@ void xe_sched_job_destroy(struct kref *ref) struct xe_sched_job *job = container_of(ref, struct xe_sched_job, refcount); + if (unlikely(job->engine->flags & ENGINE_FLAG_KERNEL)) + xe_device_mem_access_put(job_to_xe(job)); xe_engine_put(job->engine); dma_fence_put(job->fence); drm_sched_job_cleanup(&job->drm); |