aceb343464
This cleans up the mess that is the timer initialization. There used to be two timer handlers - one that basically ran during delay loop calibration and one that handled the timer afterwards. There were also two sets of timer initialization code - one that starts in user code and calls into the kernel side of the house, and one that starts in kernel code and calls user code. This eliminates one timer handler and consolidates the two sets of initialization code. [akpm@osdl.org: use new INTF_ flags] Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
129 lines
4.6 KiB
C
129 lines
4.6 KiB
C
/*
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* Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.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 "linux/threads.h"
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#include "sysdep/ptrace.h"
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#include "sysdep/faultinfo.h"
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typedef void (*kern_hndl)(int, union uml_pt_regs *);
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struct kern_handlers {
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kern_hndl relay_signal;
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kern_hndl winch;
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kern_hndl bus_handler;
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kern_hndl page_fault;
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kern_hndl sigio_handler;
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kern_hndl timer_handler;
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};
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extern struct kern_handlers handlinfo_kern;
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extern int ncpus;
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extern char *linux_prog;
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extern char *gdb_init;
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extern int kmalloc_ok;
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extern int timer_irq_inited;
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extern int jail;
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extern int nsyscalls;
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#define UML_ROUND_DOWN(addr) ((void *)(((unsigned long) addr) & PAGE_MASK))
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#define UML_ROUND_UP(addr) \
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UML_ROUND_DOWN(((unsigned long) addr) + PAGE_SIZE - 1)
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extern int kernel_fork(unsigned long flags, int (*fn)(void *), void * arg);
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extern unsigned long stack_sp(unsigned long page);
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extern int kernel_thread_proc(void *data);
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extern void syscall_segv(int sig);
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extern int current_pid(void);
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extern unsigned long alloc_stack(int order, int atomic);
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extern int do_signal(void);
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extern int is_stack_fault(unsigned long sp);
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extern unsigned long segv(struct faultinfo fi, unsigned long ip,
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int is_user, void *sc);
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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 void syscall_ready(void);
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extern void set_tracing(void *t, int tracing);
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extern int is_tracing(void *task);
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extern int segv_syscall(void);
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extern void kern_finish_exec(void *task, int new_pid, unsigned long stack);
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extern int page_size(void);
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extern unsigned long page_mask(void);
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extern int need_finish_fork(void);
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extern void free_stack(unsigned long stack, int order);
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extern void add_input_request(int op, void (*proc)(int), void *arg);
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extern char *current_cmd(void);
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extern void timer_handler(int sig, union uml_pt_regs *regs);
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extern int set_signals(int enable);
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extern void force_sigbus(void);
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extern int pid_to_processor_id(int pid);
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extern void deliver_signals(void *t);
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extern int next_syscall_index(int max);
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extern int next_trap_index(int max);
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extern void default_idle(void);
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extern void finish_fork(void);
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extern void paging_init(void);
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extern void init_flush_vm(void);
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extern void *syscall_sp(void *t);
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extern void syscall_trace(union uml_pt_regs *regs, int entryexit);
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extern int hz(void);
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extern void uml_idle_timer(void);
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extern unsigned int do_IRQ(int irq, union uml_pt_regs *regs);
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extern int external_pid(void *t);
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extern void interrupt_end(void);
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extern void initial_thread_cb(void (*proc)(void *), void *arg);
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extern int debugger_signal(int status, int pid);
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extern void debugger_parent_signal(int status, int pid);
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extern void child_signal(int pid, int status);
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extern int init_ptrace_proxy(int idle_pid, int startup, int stop);
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extern int init_parent_proxy(int pid);
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extern int singlestepping(void *t);
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extern void check_stack_overflow(void *ptr);
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extern void relay_signal(int sig, union uml_pt_regs *regs);
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extern void not_implemented(void);
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extern int user_context(unsigned long sp);
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extern void timer_irq(union uml_pt_regs *regs);
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extern void unprotect_stack(unsigned long stack);
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extern void do_uml_exitcalls(void);
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extern int attach_debugger(int idle_pid, int pid, int stop);
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extern void bad_segv(struct faultinfo fi, unsigned long ip);
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extern int config_gdb(char *str);
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extern int remove_gdb(void);
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extern char *uml_strdup(char *string);
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extern void unprotect_kernel_mem(void);
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extern void protect_kernel_mem(void);
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extern void uml_cleanup(void);
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extern void set_current(void *t);
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extern void lock_signalled_task(void *t);
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extern void IPI_handler(int cpu);
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extern int jail_setup(char *line, int *add);
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extern void *get_init_task(void);
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extern int clear_user_proc(void *buf, int size);
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extern int copy_to_user_proc(void *to, void *from, int size);
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extern int copy_from_user_proc(void *to, void *from, int size);
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extern int strlen_user_proc(char *str);
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extern void bus_handler(int sig, union uml_pt_regs *regs);
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extern void winch(int sig, union uml_pt_regs *regs);
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extern long execute_syscall(void *r);
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extern int smp_sigio_handler(void);
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extern void *get_current(void);
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extern struct task_struct *get_task(int pid, int require);
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extern void machine_halt(void);
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extern int is_syscall(unsigned long addr);
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extern void free_irq(unsigned int, void *);
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extern int cpu(void);
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extern void time_init_kern(void);
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/* Are we disallowed to sleep? Used to choose between GFP_KERNEL and GFP_ATOMIC. */
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extern int __cant_sleep(void);
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extern void segv_handler(int sig, union uml_pt_regs *regs);
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extern void sigio_handler(int sig, union uml_pt_regs *regs);
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#endif
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