Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#ifndef __UM_SYSTEM_GENERIC_H
2#define __UM_SYSTEM_GENERIC_H
3
4#include "sysdep/system.h"
5
6extern int get_signals(void);
7extern int set_signals(int enable);
8extern void block_signals(void);
9extern void unblock_signals(void);
10
11#define local_save_flags(flags) do { typecheck(unsigned long, flags); \
12 (flags) = get_signals(); } while(0)
13#define local_irq_restore(flags) do { typecheck(unsigned long, flags); \
14 set_signals(flags); } while(0)
15
16#define local_irq_save(flags) do { local_save_flags(flags); \
17 local_irq_disable(); } while(0)
18
19#define local_irq_enable() unblock_signals()
20#define local_irq_disable() block_signals()
21
22#define irqs_disabled() \
23({ \
24 unsigned long flags; \
25 local_save_flags(flags); \
26 (flags == 0); \
27})
28
29extern void *_switch_to(void *prev, void *next, void *last);
30#define switch_to(prev, next, last) prev = _switch_to(prev, next, last)
31
32#endif