From: Maarten Lankhorst maarten.lankhorst@linux.intel.com
We can no longer call intel_timeline_pin with a null argument, so add a ww loop that locks the backing object.
Signed-off-by: Maarten Lankhorst maarten.lankhorst@linux.intel.com Cc: Thomas Hellström thomas.hellstrom@linux.intel.com --- drivers/gpu/drm/i915/gt/selftest_timeline.c | 28 ++++++++++++++++++--- 1 file changed, 24 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/selftest_timeline.c b/drivers/gpu/drm/i915/gt/selftest_timeline.c index 7435abf5a703..d468147a03de 100644 --- a/drivers/gpu/drm/i915/gt/selftest_timeline.c +++ b/drivers/gpu/drm/i915/gt/selftest_timeline.c @@ -37,6 +37,26 @@ static unsigned long hwsp_cacheline(struct intel_timeline *tl) return (address + offset_in_page(tl->hwsp_offset)) / CACHELINE_BYTES; }
+static int selftest_tl_pin(struct intel_timeline *tl) +{ + struct i915_gem_ww_ctx ww; + int err; + + i915_gem_ww_ctx_init(&ww, false); +retry: + err = i915_gem_object_lock(tl->hwsp_ggtt->obj, &ww); + if (!err) + err = intel_timeline_pin(tl, &ww); + + if (err == -EDEADLK) { + err = i915_gem_ww_ctx_backoff(&ww); + if (!err) + goto retry; + } + i915_gem_ww_ctx_fini(&ww); + return err; +} + #define CACHELINES_PER_PAGE (PAGE_SIZE / CACHELINE_BYTES)
struct mock_hwsp_freelist { @@ -78,7 +98,7 @@ static int __mock_hwsp_timeline(struct mock_hwsp_freelist *state, if (IS_ERR(tl)) return PTR_ERR(tl);
- err = intel_timeline_pin(tl, NULL); + err = selftest_tl_pin(tl); if (err) { intel_timeline_put(tl); return err; @@ -464,7 +484,7 @@ checked_tl_write(struct intel_timeline *tl, struct intel_engine_cs *engine, u32 struct i915_request *rq; int err;
- err = intel_timeline_pin(tl, NULL); + err = selftest_tl_pin(tl); if (err) { rq = ERR_PTR(err); goto out; @@ -664,7 +684,7 @@ static int live_hwsp_wrap(void *arg) if (!tl->has_initial_breadcrumb || !tl->hwsp_cacheline) goto out_free;
- err = intel_timeline_pin(tl, NULL); + err = selftest_tl_pin(tl); if (err) goto out_free;
@@ -811,7 +831,7 @@ static int setup_watcher(struct hwsp_watcher *w, struct intel_gt *gt) if (IS_ERR(obj)) return PTR_ERR(obj);
- w->map = i915_gem_object_pin_map(obj, I915_MAP_WB); + w->map = i915_gem_object_pin_map_unlocked(obj, I915_MAP_WB); if (IS_ERR(w->map)) { i915_gem_object_put(obj); return PTR_ERR(w->map);