From 1f6f00238abf2bfa46f4d2c44cfc7512566f3685 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Tue, 3 Jul 2018 14:53:31 +0100 Subject: drm/i915/selftests: Drop struct_mutex around lowlevel pggtt allocation For a ppgtt that we are constructing, there is no struct_mutex dependence so skip it. In the process, also ping the scheduler frequently to try and avoid the NMI watchdog. v2: gen6 requires struct_mutex to clean up (currently) Suggested-by: Tvrtko Ursulin References: https://bugs.freedesktop.org/show_bug.cgi?id=107094 Signed-off-by: Chris Wilson Cc: Tvrtko Ursulin Reviewed-by: Tvrtko Ursulin Link: https://patchwork.freedesktop.org/patch/msgid/20180703135331.12265-1-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/selftests/i915_gem_gtt.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) (limited to 'drivers/gpu/drm/i915/selftests') diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c index 9578652fba24..a7956ecc3e1f 100644 --- a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c @@ -156,12 +156,9 @@ static int igt_ppgtt_alloc(void *arg) if (!USES_PPGTT(dev_priv)) return 0; - mutex_lock(&dev_priv->drm.struct_mutex); ppgtt = __hw_ppgtt_create(dev_priv); - if (IS_ERR(ppgtt)) { - err = PTR_ERR(ppgtt); - goto err_unlock; - } + if (IS_ERR(ppgtt)) + return PTR_ERR(ppgtt); if (!ppgtt->vm.allocate_va_range) goto err_ppgtt_cleanup; @@ -180,6 +177,8 @@ static int igt_ppgtt_alloc(void *arg) goto err_ppgtt_cleanup; } + cond_resched(); + ppgtt->vm.clear_range(&ppgtt->vm, 0, size); } @@ -197,13 +196,15 @@ static int igt_ppgtt_alloc(void *arg) } goto err_ppgtt_cleanup; } + + cond_resched(); } err_ppgtt_cleanup: + mutex_lock(&dev_priv->drm.struct_mutex); ppgtt->vm.cleanup(&ppgtt->vm); - kfree(ppgtt); -err_unlock: mutex_unlock(&dev_priv->drm.struct_mutex); + kfree(ppgtt); return err; } -- cgit v1.2.1