License cleanup: add SPDX GPL-2.0 license identifier to files with no license
[sfrench/cifs-2.6.git] / tools / testing / radix-tree / linux / preempt.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __LINUX_PREEMPT_H
3 #define __LINUX_PREEMPT_H
4
5 extern int preempt_count;
6
7 #define preempt_disable()       uatomic_inc(&preempt_count)
8 #define preempt_enable()        uatomic_dec(&preempt_count)
9
10 static inline int in_interrupt(void)
11 {
12         return 0;
13 }
14
15 #endif /* __LINUX_PREEMPT_H */