drivers/gpu/drm/i915/selftests/igt_atomic.c

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