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drm/i915/selftests: Trim struct_mutex duration for set-wedged selftest

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Trim the struct_mutex hold and exclude the call to i915_gem_set_wedged()
as a reminder that it must be callable without struct_mutex held.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190125132230.22221-4-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2019-01-25 13:22:29 +00:00
parent eb8d0f5af4
commit f3dccbdbdd
1 changed files with 4 additions and 3 deletions
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7
drivers/gpu/drm/i915/selftests/intel_hangcheck.c
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@ -389,16 +389,16 @@ static int igt_wedged_reset(void *arg)
/* Check that we can recover a wedged device with a GPU reset */
igt_global_reset_lock(i915);
mutex_lock(&i915->drm.struct_mutex);
wakeref = intel_runtime_pm_get(i915);
i915_gem_set_wedged(i915);
GEM_BUG_ON(!i915_terminally_wedged(&i915->gpu_error));
mutex_lock(&i915->drm.struct_mutex);
GEM_BUG_ON(!i915_terminally_wedged(&i915->gpu_error));
i915_reset(i915, ALL_ENGINES, NULL);
mutex_unlock(&i915->drm.struct_mutex);
intel_runtime_pm_put(i915, wakeref);
mutex_unlock(&i915->drm.struct_mutex);
igt_global_reset_unlock(i915);
return i915_terminally_wedged(&i915->gpu_error) ? -EIO : 0;
@ -1675,6 +1675,7 @@ int intel_hangcheck_live_selftests(struct drm_i915_private *i915)
wakeref = intel_runtime_pm_get(i915);
saved_hangcheck = fetch_and_zero(&i915_modparams.enable_hangcheck);
drain_delayed_work(&i915->gpu_error.hangcheck_work); /* flush param */
err = i915_subtests(tests, i915);