linux-bl808/drivers/gpu/drm/i915/selftests/igt_flush_test.c
Chris Wilson d9a13ce3fa drm/i915/selftests: Replace wait-on-timeout with explicit timeout
In igt_flush_test() we install a background timer in order to ensure
that the wait completes within a certain time. We can now tell the wait
that it has to complete within a timeout, and so no longer need the
background timer.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180709122044.7028-3-chris@chris-wilson.co.uk
2018-07-09 13:56:42 +01:00

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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;
}