[Intel-gfx] [PATCH 13/66] drm/i915/gem: Don't drop the timeline lock during execbuf
Chris Wilson
chris at chris-wilson.co.uk
Wed Jul 15 11:50:54 UTC 2020
Our timeline lock is our defence against a concurrent execbuf
interrupting our request construction. we need hold it throughout or,
for example, a second thread may interject a relocation request in
between our own relocation request and execution in the ring.
A second, major benefit, is that it allows us to preserve a large chunk
of the ringbuffer for our exclusive use; which should virtually
eliminate the threat of hitting a wait_for_space during request
construction -- although we should have already dropped other
contentious locks at that point.
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
.../gpu/drm/i915/gem/i915_gem_execbuffer.c | 413 +++++++++++-------
.../i915/gem/selftests/i915_gem_execbuffer.c | 24 +-
2 files changed, 281 insertions(+), 156 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
index 719ba9fe3e85..af3499aafd22 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
@@ -259,6 +259,8 @@ struct i915_execbuffer {
bool has_fence : 1;
bool needs_unfenced : 1;
+ struct intel_context *ce;
+
struct i915_vma *target;
struct i915_request *rq;
struct i915_vma *rq_vma;
@@ -639,6 +641,35 @@ static int eb_reserve_vma(const struct i915_execbuffer *eb,
return 0;
}
+static void retire_requests(struct intel_timeline *tl)
+{
+ struct i915_request *rq, *rn;
+
+ list_for_each_entry_safe(rq, rn, &tl->requests, link)
+ if (!i915_request_retire(rq))
+ break;
+}
+
+static int wait_for_timeline(struct intel_timeline *tl)
+{
+ do {
+ struct dma_fence *fence;
+ int err;
+
+ fence = i915_active_fence_get(&tl->last_request);
+ if (!fence)
+ return 0;
+
+ err = dma_fence_wait(fence, true);
+ dma_fence_put(fence);
+ if (err)
+ return err;
+
+ /* Retiring may trigger a barrier, requiring an extra pass */
+ retire_requests(tl);
+ } while (1);
+}
+
static int eb_reserve(struct i915_execbuffer *eb)
{
const unsigned int count = eb->buffer_count;
@@ -646,7 +677,6 @@ static int eb_reserve(struct i915_execbuffer *eb)
struct list_head last;
struct eb_vma *ev;
unsigned int i, pass;
- int err = 0;
/*
* Attempt to pin all of the buffers into the GTT.
@@ -662,18 +692,37 @@ static int eb_reserve(struct i915_execbuffer *eb)
* room for the earlier objects *unless* we need to defragment.
*/
- if (mutex_lock_interruptible(&eb->i915->drm.struct_mutex))
- return -EINTR;
-
pass = 0;
do {
+ int err = 0;
+
+ /*
+ * We need to hold one lock as we bind all the vma so that
+ * we have a consistent view of the entire vm and can plan
+ * evictions to fill the whole GTT. If we allow a second
+ * thread to run as we do this, it will either unbind
+ * everything we want pinned, or steal space that we need for
+ * ourselves. The closer we are to a full GTT, the more likely
+ * such contention will cause us to fail to bind the workload
+ * for this batch. Since we know at this point we need to
+ * find space for new buffers, we know that extra pressure
+ * from contention is likely.
+ *
+ * In lieu of being able to hold vm->mutex for the entire
+ * sequence (it's complicated!), we opt for struct_mutex.
+ */
+ if (mutex_lock_interruptible(&eb->i915->drm.struct_mutex))
+ return -EINTR;
+
list_for_each_entry(ev, &eb->unbound, bind_link) {
err = eb_reserve_vma(eb, ev, pin_flags);
if (err)
break;
}
- if (!(err == -ENOSPC || err == -EAGAIN))
- break;
+ if (!(err == -ENOSPC || err == -EAGAIN)) {
+ mutex_unlock(&eb->i915->drm.struct_mutex);
+ return err;
+ }
/* Resort *all* the objects into priority order */
INIT_LIST_HEAD(&eb->unbound);
@@ -702,38 +751,50 @@ static int eb_reserve(struct i915_execbuffer *eb)
list_add_tail(&ev->bind_link, &last);
}
list_splice_tail(&last, &eb->unbound);
+ mutex_unlock(&eb->i915->drm.struct_mutex);
if (err == -EAGAIN) {
- mutex_unlock(&eb->i915->drm.struct_mutex);
flush_workqueue(eb->i915->mm.userptr_wq);
- mutex_lock(&eb->i915->drm.struct_mutex);
continue;
}
+ /*
+ * We failed to bind our workload; there's not enough space.
+ *
+ * This could be due to userspace trying to submit a workload
+ * that requires more space than is available in an empty GTT,
+ * but more likely it means that some client is temporarily
+ * holding onto pressure space. If we wait and flush the
+ * timeline, that will reduce the concurrent pressure
+ * giving us a clean shot at allocating our workload.
+ *
+ * However, after waiting we may compete once more with new
+ * clients. Without a ticketlock or some other mechanism,
+ * there is no guarantee that we will succeed in claiming
+ * total ownership of the vm.
+ */
switch (pass++) {
case 0:
break;
case 1:
- /* Too fragmented, unbind everything and retry */
- mutex_lock(&eb->context->vm->mutex);
- err = i915_gem_evict_vm(eb->context->vm);
- mutex_unlock(&eb->context->vm->mutex);
+ /*
+ * Too fragmented, retire everything on the timeline
+ * and so make it all [contexts included] available to
+ * evict.
+ */
+ err = wait_for_timeline(eb->context->timeline);
if (err)
- goto unlock;
+ return err;
+
break;
default:
- err = -ENOSPC;
- goto unlock;
+ return -ENOSPC;
}
pin_flags = PIN_USER;
} while (1);
-
-unlock:
- mutex_unlock(&eb->i915->drm.struct_mutex);
- return err;
}
static unsigned int eb_batch_index(const struct i915_execbuffer *eb)
@@ -1007,13 +1068,44 @@ static int reloc_gpu_chain(struct reloc_cache *cache)
return err;
}
+static struct i915_request *
+nested_request_create(struct intel_context *ce)
+{
+ struct i915_request *rq;
+
+ /* XXX This only works once; replace with shared timeline */
+ mutex_lock_nested(&ce->timeline->mutex, SINGLE_DEPTH_NESTING);
+ intel_context_enter(ce);
+
+ rq = __i915_request_create(ce, GFP_KERNEL);
+
+ intel_context_exit(ce);
+ if (IS_ERR(rq))
+ mutex_unlock(&ce->timeline->mutex);
+
+ return rq;
+}
+
+static void __i915_request_add(struct i915_request *rq,
+ struct i915_sched_attr *attr)
+{
+ struct intel_timeline * const tl = i915_request_timeline(rq);
+
+ lockdep_assert_held(&tl->mutex);
+ lockdep_unpin_lock(&tl->mutex, rq->cookie);
+
+ __i915_request_commit(rq);
+ __i915_request_queue(rq, attr);
+}
+
static unsigned int reloc_bb_flags(const struct reloc_cache *cache)
{
return cache->gen > 5 ? 0 : I915_DISPATCH_SECURE;
}
-static int reloc_gpu_flush(struct reloc_cache *cache)
+static int reloc_gpu_flush(struct i915_execbuffer *eb)
{
+ struct reloc_cache *cache = &eb->reloc_cache;
struct i915_request *rq;
int err;
@@ -1044,7 +1136,9 @@ static int reloc_gpu_flush(struct reloc_cache *cache)
i915_request_set_error_once(rq, err);
intel_gt_chipset_flush(rq->engine->gt);
- i915_request_add(rq);
+ __i915_request_add(rq, &eb->gem_context->sched);
+ if (i915_request_timeline(rq) != eb->context->timeline)
+ mutex_unlock(&i915_request_timeline(rq)->mutex);
return err;
}
@@ -1103,27 +1197,15 @@ static int __reloc_gpu_alloc(struct i915_execbuffer *eb,
if (err)
goto err_unmap;
- if (engine == eb->context->engine) {
- rq = i915_request_create(eb->context);
- } else {
- struct intel_context *ce;
-
- ce = intel_context_create(engine);
- if (IS_ERR(ce)) {
- err = PTR_ERR(ce);
- goto err_unpin;
- }
-
- i915_vm_put(ce->vm);
- ce->vm = i915_vm_get(eb->context->vm);
-
- rq = intel_context_create_request(ce);
- intel_context_put(ce);
- }
+ if (cache->ce == eb->context)
+ rq = __i915_request_create(cache->ce, GFP_KERNEL);
+ else
+ rq = nested_request_create(cache->ce);
if (IS_ERR(rq)) {
err = PTR_ERR(rq);
goto err_unpin;
}
+ rq->cookie = lockdep_pin_lock(&i915_request_timeline(rq)->mutex);
err = intel_gt_buffer_pool_mark_active(pool, rq);
if (err)
@@ -1151,7 +1233,9 @@ static int __reloc_gpu_alloc(struct i915_execbuffer *eb,
skip_request:
i915_request_set_error_once(rq, err);
err_request:
- i915_request_add(rq);
+ __i915_request_add(rq, &eb->gem_context->sched);
+ if (i915_request_timeline(rq) != eb->context->timeline)
+ mutex_unlock(&i915_request_timeline(rq)->mutex);
err_unpin:
i915_vma_unpin(batch);
err_unmap:
@@ -1161,11 +1245,6 @@ static int __reloc_gpu_alloc(struct i915_execbuffer *eb,
return err;
}
-static bool reloc_can_use_engine(const struct intel_engine_cs *engine)
-{
- return engine->class != VIDEO_DECODE_CLASS || !IS_GEN(engine->i915, 6);
-}
-
static u32 *reloc_gpu(struct i915_execbuffer *eb,
struct i915_vma *vma,
unsigned int len)
@@ -1177,12 +1256,6 @@ static u32 *reloc_gpu(struct i915_execbuffer *eb,
if (unlikely(!cache->rq)) {
struct intel_engine_cs *engine = eb->engine;
- if (!reloc_can_use_engine(engine)) {
- engine = engine->gt->engine_class[COPY_ENGINE_CLASS][0];
- if (!engine)
- return ERR_PTR(-ENODEV);
- }
-
err = __reloc_gpu_alloc(eb, engine, len);
if (unlikely(err))
return ERR_PTR(err);
@@ -1513,7 +1586,7 @@ static int eb_relocate(struct i915_execbuffer *eb)
break;
}
- flush = reloc_gpu_flush(&eb->reloc_cache);
+ flush = reloc_gpu_flush(eb);
if (!err)
err = flush;
}
@@ -1706,20 +1779,9 @@ static int __eb_parse(struct dma_fence_work *work)
pw->trampoline);
}
-static void __eb_parse_release(struct dma_fence_work *work)
-{
- struct eb_parse_work *pw = container_of(work, typeof(*pw), base);
-
- if (pw->trampoline)
- i915_active_release(&pw->trampoline->active);
- i915_active_release(&pw->shadow->active);
- i915_active_release(&pw->batch->active);
-}
-
static const struct dma_fence_work_ops eb_parse_ops = {
.name = "eb_parse",
.work = __eb_parse,
- .release = __eb_parse_release,
};
static inline int
@@ -1737,21 +1799,23 @@ parser_mark_active(struct eb_parse_work *pw, struct intel_timeline *tl)
{
int err;
- mutex_lock(&tl->mutex);
+ err = i915_active_ref(&pw->batch->active,
+ tl->fence_context,
+ &pw->base.dma);
+ if (err)
+ return err;
err = __parser_mark_active(pw->shadow, tl, &pw->base.dma);
if (err)
- goto unlock;
+ return err;
if (pw->trampoline) {
err = __parser_mark_active(pw->trampoline, tl, &pw->base.dma);
if (err)
- goto unlock;
+ return err;
}
-unlock:
- mutex_unlock(&tl->mutex);
- return err;
+ return 0;
}
static int eb_parse_pipeline(struct i915_execbuffer *eb,
@@ -1765,20 +1829,6 @@ static int eb_parse_pipeline(struct i915_execbuffer *eb,
if (!pw)
return -ENOMEM;
- err = i915_active_acquire(&eb->batch->vma->active);
- if (err)
- goto err_free;
-
- err = i915_active_acquire(&shadow->active);
- if (err)
- goto err_batch;
-
- if (trampoline) {
- err = i915_active_acquire(&trampoline->active);
- if (err)
- goto err_shadow;
- }
-
dma_fence_work_init(&pw->base, &eb_parse_ops);
pw->engine = eb->engine;
@@ -1827,14 +1877,6 @@ static int eb_parse_pipeline(struct i915_execbuffer *eb,
i915_sw_fence_set_error_once(&pw->base.chain, err);
dma_fence_work_commit_imm(&pw->base);
return err;
-
-err_shadow:
- i915_active_release(&shadow->active);
-err_batch:
- i915_active_release(&eb->batch->vma->active);
-err_free:
- kfree(pw);
- return err;
}
static int eb_parse(struct i915_execbuffer *eb)
@@ -2043,32 +2085,61 @@ static struct i915_request *eb_throttle(struct intel_context *ce)
return i915_request_get(rq);
}
-static int __eb_pin_engine(struct i915_execbuffer *eb, struct intel_context *ce)
+static bool reloc_can_use_engine(const struct intel_engine_cs *engine)
{
- struct intel_timeline *tl;
- struct i915_request *rq;
+ return engine->class != VIDEO_DECODE_CLASS || !IS_GEN(engine->i915, 6);
+}
+
+static int __eb_pin_reloc_engine(struct i915_execbuffer *eb)
+{
+ struct intel_engine_cs *engine = eb->engine;
+ struct intel_context *ce;
int err;
- /*
- * ABI: Before userspace accesses the GPU (e.g. execbuffer), report
- * EIO if the GPU is already wedged.
- */
- err = intel_gt_terminally_wedged(ce->engine->gt);
- if (err)
- return err;
+ if (reloc_can_use_engine(engine)) {
+ eb->reloc_cache.ce = eb->context;
+ return 0;
+ }
- if (unlikely(intel_context_is_banned(ce)))
- return -EIO;
+ engine = engine->gt->engine_class[COPY_ENGINE_CLASS][0];
+ if (!engine)
+ return -ENODEV;
+
+ ce = intel_context_create(engine);
+ if (IS_ERR(ce))
+ return PTR_ERR(ce);
+
+ /* Reuse eb->context->timeline with scheduler! */
+
+ i915_vm_put(ce->vm);
+ ce->vm = i915_vm_get(eb->context->vm);
- /*
- * Pinning the contexts may generate requests in order to acquire
- * GGTT space, so do this first before we reserve a seqno for
- * ourselves.
- */
err = intel_context_pin(ce);
if (err)
return err;
+ eb->reloc_cache.ce = ce;
+ return 0;
+}
+
+static void __eb_unpin_reloc_engine(struct i915_execbuffer *eb)
+{
+ struct intel_context *ce = eb->reloc_cache.ce;
+
+ if (ce == eb->context)
+ return;
+
+ intel_context_unpin(ce);
+ intel_context_put(ce);
+}
+
+static int eb_lock_engine(struct i915_execbuffer *eb)
+{
+ struct intel_context *ce = eb->context;
+ struct intel_timeline *tl;
+ struct i915_request *rq;
+ int err;
+
/*
* Take a local wakeref for preparing to dispatch the execbuf as
* we expect to access the hardware fairly frequently in the
@@ -2078,17 +2149,17 @@ static int __eb_pin_engine(struct i915_execbuffer *eb, struct intel_context *ce)
* taken on the engine, and the parent device.
*/
tl = intel_context_timeline_lock(ce);
- if (IS_ERR(tl)) {
- err = PTR_ERR(tl);
- goto err_unpin;
- }
+ if (IS_ERR(tl))
+ return PTR_ERR(tl);
intel_context_enter(ce);
- rq = eb_throttle(ce);
-
- intel_context_timeline_unlock(tl);
- if (rq) {
+ /*
+ * Before we begin, make sure there is enough space in the ring to
+ * build the mightiest of requests, and to ratelimits those hogs
+ * who do succeed in flooding the rings.
+ */
+ while ((rq = eb_throttle(ce))) {
bool nonblock = eb->file->filp->f_flags & O_NONBLOCK;
long timeout;
@@ -2096,40 +2167,51 @@ static int __eb_pin_engine(struct i915_execbuffer *eb, struct intel_context *ce)
if (nonblock)
timeout = 0;
+ mutex_unlock(&tl->mutex);
+
timeout = i915_request_wait(rq,
I915_WAIT_INTERRUPTIBLE,
timeout);
i915_request_put(rq);
+ mutex_lock(&tl->mutex);
+
if (timeout < 0) {
err = nonblock ? -EWOULDBLOCK : timeout;
goto err_exit;
}
+
+ retire_requests(tl);
}
- eb->engine = ce->engine;
- eb->context = ce;
+ err = __eb_pin_reloc_engine(eb);
+ if (err)
+ goto err_exit;
+
return 0;
err_exit:
- mutex_lock(&tl->mutex);
intel_context_exit(ce);
intel_context_timeline_unlock(tl);
-err_unpin:
- intel_context_unpin(ce);
return err;
}
-static void eb_unpin_engine(struct i915_execbuffer *eb)
+static void eb_unlock_engine(struct i915_execbuffer *eb)
{
struct intel_context *ce = eb->context;
- struct intel_timeline *tl = ce->timeline;
- mutex_lock(&tl->mutex);
+ __eb_unpin_reloc_engine(eb);
+
+ /* Try to clean up the client's timeline after submitting the request */
+ retire_requests(ce->timeline);
+
intel_context_exit(ce);
- mutex_unlock(&tl->mutex);
+ intel_context_timeline_unlock(ce->timeline);
+}
- intel_context_unpin(ce);
+static void eb_unpin_engine(struct i915_execbuffer *eb)
+{
+ intel_context_unpin(eb->context);
}
static unsigned int
@@ -2176,6 +2258,35 @@ eb_select_legacy_ring(struct i915_execbuffer *eb,
return user_ring_map[user_ring_id];
}
+static int __eb_pin_engine(struct i915_execbuffer *eb, struct intel_context *ce)
+{
+ int err;
+
+ /*
+ * ABI: Before userspace accesses the GPU (e.g. execbuffer), report
+ * EIO if the GPU is already wedged.
+ */
+ err = intel_gt_terminally_wedged(ce->engine->gt);
+ if (err)
+ return err;
+
+ if (unlikely(intel_context_is_banned(ce)))
+ return -EIO;
+
+ /*
+ * Pinning the contexts may generate requests in order to acquire
+ * GGTT space, so do this first before we reserve a seqno for
+ * ourselves.
+ */
+ err = intel_context_pin(ce);
+ if (err)
+ return err;
+
+ eb->engine = ce->engine;
+ eb->context = ce;
+ return 0;
+}
+
static int
eb_pin_engine(struct i915_execbuffer *eb,
struct drm_file *file,
@@ -2329,28 +2440,18 @@ signal_fence_array(struct i915_execbuffer *eb,
}
}
-static void retire_requests(struct intel_timeline *tl, struct i915_request *end)
-{
- struct i915_request *rq, *rn;
-
- list_for_each_entry_safe(rq, rn, &tl->requests, link)
- if (rq == end || !i915_request_retire(rq))
- break;
-}
-
static void eb_request_add(struct i915_execbuffer *eb)
{
struct i915_request *rq = eb->request;
struct intel_timeline * const tl = i915_request_timeline(rq);
struct i915_sched_attr attr = {};
- struct i915_request *prev;
lockdep_assert_held(&tl->mutex);
lockdep_unpin_lock(&tl->mutex, rq->cookie);
trace_i915_request_add(rq);
- prev = __i915_request_commit(rq);
+ __i915_request_commit(rq);
/* Check that the context wasn't destroyed before submission */
if (likely(!intel_context_is_closed(eb->context))) {
@@ -2362,12 +2463,6 @@ static void eb_request_add(struct i915_execbuffer *eb)
}
__i915_request_queue(rq, &attr);
-
- /* Try to clean up the client's timeline after submitting the request */
- if (prev)
- retire_requests(tl, prev);
-
- mutex_unlock(&tl->mutex);
}
static int
@@ -2455,6 +2550,12 @@ i915_gem_do_execbuffer(struct drm_device *dev,
if (unlikely(err))
goto err_context;
+ /* *** TIMELINE LOCK *** */
+ err = eb_lock_engine(&eb);
+ if (unlikely(err))
+ goto err_engine;
+ lockdep_assert_held(&eb.context->timeline->mutex);
+
err = eb_relocate(&eb);
if (err) {
/*
@@ -2521,11 +2622,12 @@ i915_gem_do_execbuffer(struct drm_device *dev,
GEM_BUG_ON(eb.reloc_cache.rq);
/* Allocate a request for this batch buffer nice and early. */
- eb.request = i915_request_create(eb.context);
+ eb.request = __i915_request_create(eb.context, GFP_KERNEL);
if (IS_ERR(eb.request)) {
err = PTR_ERR(eb.request);
goto err_batch_unpin;
}
+ eb.request->cookie = lockdep_pin_lock(&eb.context->timeline->mutex);
if (in_fence) {
if (args->flags & I915_EXEC_FENCE_SUBMIT)
@@ -2567,23 +2669,13 @@ i915_gem_do_execbuffer(struct drm_device *dev,
trace_i915_request_queue(eb.request, eb.batch_flags);
err = eb_submit(&eb, batch);
err_request:
- add_to_client(eb.request, file);
i915_request_get(eb.request);
eb_request_add(&eb);
if (fences)
signal_fence_array(&eb, fences);
- if (out_fence) {
- if (err == 0) {
- fd_install(out_fence_fd, out_fence->file);
- args->rsvd2 &= GENMASK_ULL(31, 0); /* keep in-fence */
- args->rsvd2 |= (u64)out_fence_fd << 32;
- out_fence_fd = -1;
- } else {
- fput(out_fence->file);
- }
- }
+ add_to_client(eb.request, file);
i915_request_put(eb.request);
err_batch_unpin:
@@ -2595,12 +2687,25 @@ i915_gem_do_execbuffer(struct drm_device *dev,
err_vma:
if (eb.trampoline)
i915_vma_unpin(eb.trampoline);
+ eb_unlock_engine(&eb);
+ /* *** TIMELINE UNLOCK *** */
+err_engine:
eb_unpin_engine(&eb);
err_context:
i915_gem_context_put(eb.gem_context);
err_destroy:
eb_destroy(&eb);
err_out_fence:
+ if (out_fence) {
+ if (err == 0) {
+ fd_install(out_fence_fd, out_fence->file);
+ args->rsvd2 &= GENMASK_ULL(31, 0); /* keep in-fence */
+ args->rsvd2 |= (u64)out_fence_fd << 32;
+ out_fence_fd = -1;
+ } else {
+ fput(out_fence->file);
+ }
+ }
if (out_fence_fd != -1)
put_unused_fd(out_fence_fd);
err_in_fence:
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_execbuffer.c
index 57c14d3340cd..992d46db1b33 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_execbuffer.c
@@ -7,6 +7,9 @@
#include "gt/intel_engine_pm.h"
#include "selftests/igt_flush_test.h"
+#include "selftests/mock_drm.h"
+
+#include "mock_context.h"
static u64 read_reloc(const u32 *map, int x, const u64 mask)
{
@@ -60,7 +63,7 @@ static int __igt_gpu_reloc(struct i915_execbuffer *eb,
GEM_BUG_ON(!eb->reloc_cache.rq);
rq = i915_request_get(eb->reloc_cache.rq);
- err = reloc_gpu_flush(&eb->reloc_cache);
+ err = reloc_gpu_flush(eb);
if (err)
goto put_rq;
GEM_BUG_ON(eb->reloc_cache.rq);
@@ -100,14 +103,22 @@ static int igt_gpu_reloc(void *arg)
{
struct i915_execbuffer eb;
struct drm_i915_gem_object *scratch;
+ struct file *file;
int err = 0;
u32 *map;
+ file = mock_file(arg);
+ if (IS_ERR(file))
+ return PTR_ERR(file);
+
eb.i915 = arg;
+ eb.gem_context = live_context(arg, file);
+ if (IS_ERR(eb.gem_context))
+ goto err_file;
scratch = i915_gem_object_create_internal(eb.i915, 4096);
if (IS_ERR(scratch))
- return PTR_ERR(scratch);
+ goto err_file;
map = i915_gem_object_pin_map(scratch, I915_MAP_WC);
if (IS_ERR(map)) {
@@ -130,8 +141,15 @@ static int igt_gpu_reloc(void *arg)
if (err)
goto err_put;
+ mutex_lock(&eb.context->timeline->mutex);
+ intel_context_enter(eb.context);
+ eb.reloc_cache.ce = eb.context;
+
err = __igt_gpu_reloc(&eb, scratch);
+ intel_context_exit(eb.context);
+ mutex_unlock(&eb.context->timeline->mutex);
+
intel_context_unpin(eb.context);
err_put:
intel_context_put(eb.context);
@@ -146,6 +164,8 @@ static int igt_gpu_reloc(void *arg)
err_scratch:
i915_gem_object_put(scratch);
+err_file:
+ fput(file);
return err;
}
--
2.20.1
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