LXR linux/drivers/gpu/drm/i915/selftests/igt

   1/* SPDX-License-Identifier: MIT */
   2/*
   3 * Copyright © 2018 Intel Corporation
   4 */
   5
   6#ifndef IGT_ATOMIC_H
   7#define IGT_ATOMIC_H
   8
   9#include <linux/preempt.h>
  10#include <linux/bottom_half.h>
  11#include <linux/irqflags.h>
  12
  13static void __preempt_begin(void)
  14{
  15        preempt_disable();
  16}
  17
  18static void __preempt_end(void)
  19{
  20        preempt_enable();
  21}
  22
  23static void __softirq_begin(void)
  24{
  25        local_bh_disable();
  26}
  27
  28static void __softirq_end(void)
  29{
  30        local_bh_enable();
  31}
  32
  33static void __hardirq_begin(void)
  34{
  35        local_irq_disable();
  36}
  37
  38static void __hardirq_end(void)
  39{
  40        local_irq_enable();
  41}
  42
  43struct igt_atomic_section {
  44        const char *name;
  45        void (*critical_section_begin)(void);
  46        void (*critical_section_end)(void);
  47};
  48
  49static const struct igt_atomic_section igt_atomic_phases[] = {
  50        { "preempt", __preempt_begin, __preempt_end },
  51        { "softirq", __softirq_begin, __softirq_end },
  52        { "hardirq", __hardirq_begin, __hardirq_end },
  53        { }
  54};
  55
  56#endif /* IGT_ATOMIC_H */
  57