Merge branch 'master' into upstream

[powerpc.git] / arch / um / kernel / skas / process_kern.c

diff --git a/arch/um/kernel/skas/process_kern.c b/arch/um/kernel/skas/process_kern.c
index a340006..2135eaf 100644 (file)
--- 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
  */
@@ -32,9 +32,11 @@ 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);
 
+       arch_switch_to_skas(current->thread.prev_sched, current);
+
        if(current->pid == 0)
                switch_timers(1);
 }
@@ -48,8 +50,8 @@ 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(&current->thread.mode.skas.switch_buf, 
+       os_usr1_signal(1);
+       thread_wait(&current->thread.mode.skas.switch_buf,
                    current->thread.mode.skas.fork_buf);
 
        if(current->thread.prev_sched != NULL)
@@ -80,8 +82,8 @@ void release_thread_skas(struct task_struct *task)
 
 void fork_handler(int sig)
 {
-        change_sig(SIGUSR1, 1);
-       thread_wait(&current->thread.mode.skas.switch_buf, 
+       os_usr1_signal(1);
+       thread_wait(&current->thread.mode.skas.switch_buf,
                    current->thread.mode.skas.fork_buf);
        
        force_flush_all();
@@ -89,15 +91,22 @@ void fork_handler(int sig)
                panic("blech");
 
        schedule_tail(current->thread.prev_sched);
+
+       /* XXX: if interrupt_end() calls schedule, this call to
+        * arch_switch_to_skas isn't needed. We could want to apply this to
+        * improve performance. -bb */
+       arch_switch_to_skas(current->thread.prev_sched, current);
+
        current->thread.prev_sched = NULL;
 
-       /* Handle any immediate reschedules or signals */
+/* Handle any immediate reschedules or signals */
        interrupt_end();
+
        userspace(&current->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);
@@ -109,6 +118,8 @@ int copy_thread_skas(int nr, unsigned long clone_flags, unsigned long sp,
                if(sp != 0) REGS_SP(p->thread.regs.regs.skas.regs) = sp;
 
                handler = fork_handler;
+
+               arch_copy_thread(&current->thread.arch, &p->thread.arch);
        }
        else {
                init_thread_registers(&p->thread.regs.regs);
@@ -121,8 +132,6 @@ int copy_thread_skas(int nr, unsigned long clone_flags, unsigned long sp,
        return(0);
 }
 
-extern void map_stub_pages(int fd, unsigned long code,
-                          unsigned long data, unsigned long stack);
 int new_mm(unsigned long stack)
 {
        int fd;