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Tip revision: 22763c5cf3690a681551162c15d34d935308c8d7 authored by Linus Torvalds on 03 December 2009, 03:51:21 UTC
Linux 2.6.32
Linux 2.6.32
Tip revision: 22763c5
signal-common.h
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1991, 1992 Linus Torvalds
* Copyright (C) 1994 - 2000 Ralf Baechle
* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
*/
#ifndef __SIGNAL_COMMON_H
#define __SIGNAL_COMMON_H
/* #define DEBUG_SIG */
#ifdef DEBUG_SIG
# define DEBUGP(fmt, args...) printk("%s: " fmt, __func__, ##args)
#else
# define DEBUGP(fmt, args...)
#endif
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
/*
* Determine which stack to use..
*/
extern void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
size_t frame_size);
/*
* install trampoline code to get back from the sig handler
*/
extern int install_sigtramp(unsigned int __user *tramp, unsigned int syscall);
/* Check and clear pending FPU exceptions in saved CSR */
extern int fpcsr_pending(unsigned int __user *fpcsr);
/* Make sure we will not lose FPU ownership */
#ifdef CONFIG_PREEMPT
#define lock_fpu_owner() preempt_disable()
#define unlock_fpu_owner() preempt_enable()
#else
#define lock_fpu_owner() pagefault_disable()
#define unlock_fpu_owner() pagefault_enable()
#endif
#endif /* __SIGNAL_COMMON_H */