linux_kernel/drivers/gpu/drm/i915/selftests/igt_flush_test.c

/*
 * SPDX-License-Identifier: MIT
 *
 * Copyright © 2018 Intel Corporation
 */

#include "../i915_drv.h"

#include "../i915_selftest.h"
#include "igt_flush_test.h"

int igt_flush_test(struct drm_i915_private *i915, unsigned int flags)
{
	cond_resched();

	if (flags & I915_WAIT_LOCKED &&
	    i915_gem_switch_to_kernel_context(i915)) {
		pr_err("Failed to switch back to kernel context; declaring wedged\n");
		i915_gem_set_wedged(i915);
	}

	if (i915_gem_wait_for_idle(i915, flags, HZ / 5) == -ETIME) {
		pr_err("%pS timed out, cancelling all further testing.\n",
		       __builtin_return_address(0));

		GEM_TRACE("%pS timed out.\n", __builtin_return_address(0));
		GEM_TRACE_DUMP();

		i915_gem_set_wedged(i915);
	}

	return i915_terminally_wedged(&i915->gpu_error) ? -EIO : 0;
}