xref: /OK3568_Linux_fs/kernel/drivers/gpu/drm/i915/selftests/igt_atomic.c (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun // SPDX-License-Identifier: MIT
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun  * Copyright © 2018 Intel Corporation
4*4882a593Smuzhiyun  */
5*4882a593Smuzhiyun 
6*4882a593Smuzhiyun #include <linux/preempt.h>
7*4882a593Smuzhiyun #include <linux/bottom_half.h>
8*4882a593Smuzhiyun #include <linux/irqflags.h>
9*4882a593Smuzhiyun 
10*4882a593Smuzhiyun #include "igt_atomic.h"
11*4882a593Smuzhiyun 
__preempt_begin(void)12*4882a593Smuzhiyun static void __preempt_begin(void)
13*4882a593Smuzhiyun {
14*4882a593Smuzhiyun 	preempt_disable();
15*4882a593Smuzhiyun }
16*4882a593Smuzhiyun 
__preempt_end(void)17*4882a593Smuzhiyun static void __preempt_end(void)
18*4882a593Smuzhiyun {
19*4882a593Smuzhiyun 	preempt_enable();
20*4882a593Smuzhiyun }
21*4882a593Smuzhiyun 
__softirq_begin(void)22*4882a593Smuzhiyun static void __softirq_begin(void)
23*4882a593Smuzhiyun {
24*4882a593Smuzhiyun 	local_bh_disable();
25*4882a593Smuzhiyun }
26*4882a593Smuzhiyun 
__softirq_end(void)27*4882a593Smuzhiyun static void __softirq_end(void)
28*4882a593Smuzhiyun {
29*4882a593Smuzhiyun 	local_bh_enable();
30*4882a593Smuzhiyun }
31*4882a593Smuzhiyun 
__hardirq_begin(void)32*4882a593Smuzhiyun static void __hardirq_begin(void)
33*4882a593Smuzhiyun {
34*4882a593Smuzhiyun 	local_irq_disable();
35*4882a593Smuzhiyun }
36*4882a593Smuzhiyun 
__hardirq_end(void)37*4882a593Smuzhiyun static void __hardirq_end(void)
38*4882a593Smuzhiyun {
39*4882a593Smuzhiyun 	local_irq_enable();
40*4882a593Smuzhiyun }
41*4882a593Smuzhiyun 
42*4882a593Smuzhiyun const struct igt_atomic_section igt_atomic_phases[] = {
43*4882a593Smuzhiyun 	{ "preempt", __preempt_begin, __preempt_end },
44*4882a593Smuzhiyun 	{ "softirq", __softirq_begin, __softirq_end },
45*4882a593Smuzhiyun 	{ "hardirq", __hardirq_begin, __hardirq_end },
46*4882a593Smuzhiyun 	{ }
47*4882a593Smuzhiyun };
48