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edea138584
Tidy kern_util.h. It turns out that most of the function declarations aren't used, so they can go away. os.h no longer includes kern_util.h, so files which got it through os.h now need to include it directly. A number of other files never needed it, so these includes are deleted. The structure which was used to pass signal handlers from the kernel side to the userspace side is gone. Instead, the handlers are declared here, and used directly from libc code. This allows arch/um/os-Linux/trap.c to be deleted, with its remnants being moved to arch/um/os-Linux/skas/trap.c. arch/um/os-Linux/tty.c had its inclusions changed, and it needed some style attention, so it got tidied. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
67 lines
2 KiB
C
67 lines
2 KiB
C
/*
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* Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
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* Licensed under the GPL
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*/
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#ifndef __KERN_UTIL_H__
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#define __KERN_UTIL_H__
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#include "sysdep/ptrace.h"
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#include "sysdep/faultinfo.h"
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extern int ncpus;
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extern int kmalloc_ok;
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extern int nsyscalls;
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#define UML_ROUND_UP(addr) \
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((((unsigned long) addr) + PAGE_SIZE - 1) & PAGE_MASK)
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extern unsigned long alloc_stack(int order, int atomic);
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extern void free_stack(unsigned long stack, int order);
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extern int do_signal(void);
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extern void copy_sc(struct uml_pt_regs *regs, void *from);
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extern void interrupt_end(void);
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extern void relay_signal(int sig, struct uml_pt_regs *regs);
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extern unsigned long segv(struct faultinfo fi, unsigned long ip,
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int is_user, struct uml_pt_regs *regs);
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extern int handle_page_fault(unsigned long address, unsigned long ip,
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int is_write, int is_user, int *code_out);
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extern unsigned int do_IRQ(int irq, struct uml_pt_regs *regs);
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extern int smp_sigio_handler(void);
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extern void initial_thread_cb(void (*proc)(void *), void *arg);
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extern int is_syscall(unsigned long addr);
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extern void timer_handler(int sig, struct uml_pt_regs *regs);
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extern void timer_handler(int sig, struct uml_pt_regs *regs);
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extern int start_uml(void);
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extern void paging_init(void);
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extern void uml_cleanup(void);
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extern void do_uml_exitcalls(void);
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/*
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* Are we disallowed to sleep? Used to choose between GFP_KERNEL and
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* GFP_ATOMIC.
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*/
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extern int __cant_sleep(void);
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extern void *get_current(void);
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extern int copy_from_user_proc(void *to, void *from, int size);
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extern int cpu(void);
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extern char *uml_strdup(const char *string);
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extern unsigned long to_irq_stack(unsigned long *mask_out);
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extern unsigned long from_irq_stack(int nested);
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extern void syscall_trace(struct uml_pt_regs *regs, int entryexit);
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extern int singlestepping(void *t);
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extern void segv_handler(int sig, struct uml_pt_regs *regs);
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extern void bus_handler(int sig, struct uml_pt_regs *regs);
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extern void winch(int sig, struct uml_pt_regs *regs);
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#endif
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