diff options
Diffstat (limited to 'arch/um/kernel/skas/process_kern.c')
| -rw-r--r-- | arch/um/kernel/skas/process_kern.c | 40 |
1 files changed, 12 insertions, 28 deletions
diff --git a/arch/um/kernel/skas/process_kern.c b/arch/um/kernel/skas/process_kern.c index 9c990253966..3f70a2e12f0 100644 --- a/arch/um/kernel/skas/process_kern.c +++ b/arch/um/kernel/skas/process_kern.c @@ -1,4 +1,4 @@ -/* +/* * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) * Licensed under the GPL */ @@ -13,15 +13,12 @@ #include "asm/uaccess.h" #include "asm/atomic.h" #include "kern_util.h" -#include "time_user.h" -#include "signal_user.h" #include "skas.h" #include "os.h" #include "user_util.h" #include "tlb.h" #include "kern.h" #include "mode.h" -#include "proc_mm.h" #include "registers.h" void switch_to_skas(void *prev, void *next) @@ -35,7 +32,7 @@ void switch_to_skas(void *prev, void *next) if(current->pid == 0) switch_timers(0); - switch_threads(&from->thread.mode.skas.switch_buf, + switch_threads(&from->thread.mode.skas.switch_buf, to->thread.mode.skas.switch_buf); if(current->pid == 0) @@ -51,8 +48,8 @@ void new_thread_handler(int sig) fn = current->thread.request.u.thread.proc; arg = current->thread.request.u.thread.arg; - change_sig(SIGUSR1, 1); - thread_wait(¤t->thread.mode.skas.switch_buf, + os_usr1_signal(1); + thread_wait(¤t->thread.mode.skas.switch_buf, current->thread.mode.skas.fork_buf); if(current->thread.prev_sched != NULL) @@ -83,8 +80,8 @@ void release_thread_skas(struct task_struct *task) void fork_handler(int sig) { - change_sig(SIGUSR1, 1); - thread_wait(¤t->thread.mode.skas.switch_buf, + os_usr1_signal(1); + thread_wait(¤t->thread.mode.skas.switch_buf, current->thread.mode.skas.fork_buf); force_flush_all(); @@ -94,13 +91,13 @@ void fork_handler(int sig) schedule_tail(current->thread.prev_sched); current->thread.prev_sched = NULL; - /* Handle any immediate reschedules or signals */ +/* Handle any immediate reschedules or signals */ interrupt_end(); userspace(¤t->thread.regs.regs); } int copy_thread_skas(int nr, unsigned long clone_flags, unsigned long sp, - unsigned long stack_top, struct task_struct * p, + unsigned long stack_top, struct task_struct * p, struct pt_regs *regs) { void (*handler)(int); @@ -119,32 +116,19 @@ int copy_thread_skas(int nr, unsigned long clone_flags, unsigned long sp, handler = new_thread_handler; } - new_thread(p->thread_info, &p->thread.mode.skas.switch_buf, + new_thread(task_stack_page(p), &p->thread.mode.skas.switch_buf, &p->thread.mode.skas.fork_buf, handler); return(0); } -extern void map_stub_pages(int fd, unsigned long code, - unsigned long data, unsigned long stack); -int new_mm(int from, unsigned long stack) +int new_mm(unsigned long stack) { - struct proc_mm_op copy; - int n, fd; + int fd; fd = os_open_file("/proc/mm", of_cloexec(of_write(OPENFLAGS())), 0); if(fd < 0) return(fd); - if(from != -1){ - copy = ((struct proc_mm_op) { .op = MM_COPY_SEGMENTS, - .u = - { .copy_segments = from } } ); - n = os_write_file(fd, ©, sizeof(copy)); - if(n != sizeof(copy)) - printk("new_mm : /proc/mm copy_segments failed, " - "err = %d\n", -n); - } - if(skas_needs_stub) map_stub_pages(fd, CONFIG_STUB_CODE, CONFIG_STUB_DATA, stack); @@ -186,7 +170,7 @@ int start_uml_skas(void) init_task.thread.request.u.thread.proc = start_kernel_proc; init_task.thread.request.u.thread.arg = NULL; - return(start_idle_thread(init_task.thread_info, + return(start_idle_thread(task_stack_page(&init_task), &init_task.thread.mode.skas.switch_buf, &init_task.thread.mode.skas.fork_buf)); } |