17 files changed, 41 insertions, 150 deletions

diff --git a/arch/um/kernel/main.c b/arch/um/kernel/main.c
index e59f58152678..1e1a87f1c510 100644
--- a/arch/um/kernel/main.c
+++ b/arch/um/kernel/main.c
@@ -69,7 +69,6 @@ static __init void do_uml_initcalls(void)
 
 static void last_ditch_exit(int sig)
 {
-        kmalloc_ok = 0;
         signal(SIGINT, SIG_DFL);
         signal(SIGTERM, SIG_DFL);
         signal(SIGHUP, SIG_DFL);
diff --git a/arch/um/kernel/process_kern.c b/arch/um/kernel/process_kern.c
index 157584ae4792..d4036ed680bc 100644
--- a/arch/um/kernel/process_kern.c
+++ b/arch/um/kernel/process_kern.c
@@ -96,8 +96,8 @@ int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
 
         current->thread.request.u.thread.proc = fn;
         current->thread.request.u.thread.arg = arg;
-        pid = do_fork(CLONE_VM | CLONE_UNTRACED | flags, 0, NULL, 0, NULL,
-                      NULL);
+        pid = do_fork(CLONE_VM | CLONE_UNTRACED | flags, 0,
+                      &current->thread.regs, 0, NULL, NULL);
         if(pid < 0)
                 panic("do_fork failed in kernel_thread, errno = %d", pid);
         return(pid);
@@ -169,7 +169,7 @@ int current_pid(void)
 
 void default_idle(void)
 {
-        uml_idle_timer();
+        CHOOSE_MODE(uml_idle_timer(), (void) 0);
 
         atomic_inc(&init_mm.mm_count);
         current->mm = &init_mm;
diff --git a/arch/um/kernel/reboot.c b/arch/um/kernel/reboot.c
index 207f89d74908..fcec51da1d37 100644
--- a/arch/um/kernel/reboot.c
+++ b/arch/um/kernel/reboot.c
@@ -38,14 +38,14 @@ static void kill_off_processes(void)
 
 void uml_cleanup(void)
 {
-        kill_off_processes();
+        kmalloc_ok = 0;
         do_uml_exitcalls();
+        kill_off_processes();
 }
 
 void machine_restart(char * __unused)
 {
-        do_uml_exitcalls();
-        kill_off_processes();
+        uml_cleanup();
         CHOOSE_MODE(reboot_tt(), reboot_skas());
 }
 
@@ -53,8 +53,7 @@ EXPORT_SYMBOL(machine_restart);
 
 void machine_power_off(void)
 {
-        do_uml_exitcalls();
-        kill_off_processes();
+        uml_cleanup();
         CHOOSE_MODE(halt_tt(), halt_skas());
 }
 
diff --git a/arch/um/kernel/skas/Makefile b/arch/um/kernel/skas/Makefile
index d37d1bfcd6f7..ff69c4b312c0 100644
--- a/arch/um/kernel/skas/Makefile
+++ b/arch/um/kernel/skas/Makefile
@@ -4,10 +4,10 @@
 #
 
 obj-y := exec_kern.o mem.o mem_user.o mmu.o process.o process_kern.o \
-        syscall_kern.o syscall_user.o time.o tlb.o trap_user.o uaccess.o \
+        syscall_kern.o syscall_user.o tlb.o trap_user.o uaccess.o \
 
 subdir- := util
 
-USER_OBJS := process.o time.o
+USER_OBJS := process.o
 
 include arch/um/scripts/Makefile.rules
diff --git a/arch/um/kernel/skas/include/mode-skas.h b/arch/um/kernel/skas/include/mode-skas.h
index c1e33bd788db..bcd26a6a3888 100644
--- a/arch/um/kernel/skas/include/mode-skas.h
+++ b/arch/um/kernel/skas/include/mode-skas.h
@@ -13,7 +13,6 @@ extern unsigned long exec_fp_regs[];
 extern unsigned long exec_fpx_regs[];
 extern int have_fpx_regs;
 
-extern void user_time_init_skas(void);
 extern void sig_handler_common_skas(int sig, void *sc_ptr);
 extern void halt_skas(void);
 extern void reboot_skas(void);
diff --git a/arch/um/kernel/skas/process_kern.c b/arch/um/kernel/skas/process_kern.c
index fc71ef295782..0a7b8aa55db8 100644
--- a/arch/um/kernel/skas/process_kern.c
+++ b/arch/um/kernel/skas/process_kern.c
@@ -111,8 +111,7 @@ int copy_thread_skas(int nr, unsigned long clone_flags, unsigned long sp,
         void (*handler)(int);
 
         if(current->thread.forking){
-                memcpy(&p->thread.regs.regs.skas, 
-                       &current->thread.regs.regs.skas, 
+                memcpy(&p->thread.regs.regs.skas, &regs->regs.skas,
                        sizeof(p->thread.regs.regs.skas));
                 REGS_SET_SYSCALL_RETURN(p->thread.regs.regs.skas.regs, 0);
                 if(sp != 0) REGS_SP(p->thread.regs.regs.skas.regs) = sp;
@@ -181,7 +180,6 @@ int start_uml_skas(void)
         start_userspace(0);
 
         init_new_thread_signals(1);
-        uml_idle_timer();
 
         init_task.thread.request.u.thread.proc = start_kernel_proc;
         init_task.thread.request.u.thread.arg = NULL;
@@ -201,14 +199,3 @@ int thread_pid_skas(struct task_struct *task)
 #warning Need to look up userspace_pid by cpu
         return(userspace_pid[0]);
 }
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
diff --git a/arch/um/kernel/skas/time.c b/arch/um/kernel/skas/time.c
deleted file mode 100644
index 98091494b897..000000000000
--- a/arch/um/kernel/skas/time.c
+++ /dev/null
@@ -1,30 +0,0 @@
-/* 
- * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-#include <sys/signal.h>
-#include <sys/time.h>
-#include "time_user.h"
-#include "process.h"
-#include "user.h"
-
-void user_time_init_skas(void)
-{
-        if(signal(SIGALRM, (__sighandler_t) alarm_handler) == SIG_ERR)
-                panic("Couldn't set SIGALRM handler");
-        if(signal(SIGVTALRM, (__sighandler_t) alarm_handler) == SIG_ERR)
-                panic("Couldn't set SIGVTALRM handler");
-        set_interval(ITIMER_VIRTUAL);
-}
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
diff --git a/arch/um/kernel/syscall_kern.c b/arch/um/kernel/syscall_kern.c
index b7a55251e897..8e1a3501ff46 100644
--- a/arch/um/kernel/syscall_kern.c
+++ b/arch/um/kernel/syscall_kern.c
@@ -31,7 +31,8 @@ long sys_fork(void)
         long ret;
 
         current->thread.forking = 1;
-        ret = do_fork(SIGCHLD, 0, NULL, 0, NULL, NULL);
+        ret = do_fork(SIGCHLD, UPT_SP(&current->thread.regs.regs),
+                      &current->thread.regs, 0, NULL, NULL);
         current->thread.forking = 0;
         return(ret);
 }
@@ -41,8 +42,9 @@ long sys_vfork(void)
         long ret;
 
         current->thread.forking = 1;
-        ret = do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, 0, NULL, 0, NULL,
-                      NULL);
+        ret = do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD,
+                      UPT_SP(&current->thread.regs.regs),
+                      &current->thread.regs, 0, NULL, NULL);
         current->thread.forking = 0;
         return(ret);
 }
@@ -162,14 +164,3 @@ int next_syscall_index(int limit)
         spin_unlock(&syscall_lock);
         return(ret);
 }
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
diff --git a/arch/um/kernel/time.c b/arch/um/kernel/time.c
index c40c86a3f918..f829b309b63c 100644
--- a/arch/um/kernel/time.c
+++ b/arch/um/kernel/time.c
@@ -33,7 +33,7 @@ void timer(void)
         timeradd(&xtime, &local_offset, &xtime);
 }
 
-void set_interval(int timer_type)
+static void set_interval(int timer_type)
 {
         int usec = 1000000/hz();
         struct itimerval interval = ((struct itimerval) { { 0, usec },
@@ -45,12 +45,7 @@ void set_interval(int timer_type)
 
 void enable_timer(void)
 {
-        int usec = 1000000/hz();
-        struct itimerval enable = ((struct itimerval) { { 0, usec },
-                                                        { 0, usec }});
-        if(setitimer(ITIMER_VIRTUAL, &enable, NULL))
-                printk("enable_timer - setitimer failed, errno = %d\n",
-                       errno);
+        set_interval(ITIMER_VIRTUAL);
 }
 
 void disable_timer(void)
@@ -155,13 +150,15 @@ void idle_sleep(int secs)
         nanosleep(&ts, NULL);
 }
 
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
+/* XXX This partly duplicates init_irq_signals */
+
+void user_time_init(void)
+{
+        set_handler(SIGVTALRM, (__sighandler_t) alarm_handler,
+                    SA_ONSTACK | SA_RESTART, SIGUSR1, SIGIO, SIGWINCH,
+                    SIGALRM, SIGUSR2, -1);
+        set_handler(SIGALRM, (__sighandler_t) alarm_handler,
+                    SA_ONSTACK | SA_RESTART, SIGUSR1, SIGIO, SIGWINCH,
+                    SIGVTALRM, SIGUSR2, -1);
+        set_interval(ITIMER_VIRTUAL);
+}
diff --git a/arch/um/kernel/time_kern.c b/arch/um/kernel/time_kern.c
index 6516fc52afe0..a8b4ef601f59 100644
--- a/arch/um/kernel/time_kern.c
+++ b/arch/um/kernel/time_kern.c
@@ -162,7 +162,7 @@ int __init timer_init(void)
 {
         int err;
 
-        CHOOSE_MODE(user_time_init_tt(), user_time_init_skas());
+        user_time_init();
         err = request_irq(TIMER_IRQ, um_timer, SA_INTERRUPT, "timer", NULL);
         if(err != 0)
                 printk(KERN_ERR "timer_init : request_irq failed - "
diff --git a/arch/um/kernel/tt/Makefile b/arch/um/kernel/tt/Makefile
index 3fd2554e60b6..6939e5af8472 100644
--- a/arch/um/kernel/tt/Makefile
+++ b/arch/um/kernel/tt/Makefile
@@ -4,11 +4,11 @@
 #
 
 obj-y = exec_kern.o exec_user.o gdb.o ksyms.o mem.o mem_user.o process_kern.o \
-        syscall_kern.o syscall_user.o time.o tlb.o tracer.o trap_user.o \
+        syscall_kern.o syscall_user.o tlb.o tracer.o trap_user.o \
         uaccess.o uaccess_user.o
 
 obj-$(CONFIG_PT_PROXY) += gdb_kern.o ptproxy/
 
-USER_OBJS := gdb.o time.o tracer.o
+USER_OBJS := gdb.o tracer.o
 
 include arch/um/scripts/Makefile.rules
diff --git a/arch/um/kernel/tt/gdb.c b/arch/um/kernel/tt/gdb.c
index 19a0ad7b35b3..37e22d71a0d9 100644
--- a/arch/um/kernel/tt/gdb.c
+++ b/arch/um/kernel/tt/gdb.c
@@ -153,10 +153,10 @@ void remove_gdb_cb(void *unused)
         exit_debugger_cb(NULL);
 }
 
-int gdb_remove(char *unused)
+int gdb_remove(int unused)
 {
         initial_thread_cb(remove_gdb_cb, NULL);
-        return(0);
+        return 0;
 }
 
 void signal_usr1(int sig)
diff --git a/arch/um/kernel/tt/gdb_kern.c b/arch/um/kernel/tt/gdb_kern.c
index 93fb121f86af..26506388a6aa 100644
--- a/arch/um/kernel/tt/gdb_kern.c
+++ b/arch/um/kernel/tt/gdb_kern.c
@@ -10,7 +10,7 @@
 #ifdef CONFIG_MCONSOLE
 
 extern int gdb_config(char *str);
-extern int gdb_remove(char *unused);
+extern int gdb_remove(int n);
 
 static struct mc_device gdb_mc = {
         .name           = "gdb",
diff --git a/arch/um/kernel/tt/include/debug.h b/arch/um/kernel/tt/include/debug.h
index 8eff674107ca..738435461e13 100644
--- a/arch/um/kernel/tt/include/debug.h
+++ b/arch/um/kernel/tt/include/debug.h
@@ -4,8 +4,8 @@
  * Licensed under the GPL
  */
 
-#ifndef __DEBUG_H
-#define __DEBUG_H
+#ifndef __UML_TT_DEBUG_H
+#define __UML_TT_DEBUG_H
 
 extern int debugger_proxy(int status, pid_t pid);
 extern void child_proxy(pid_t pid, int status);
@@ -13,17 +13,6 @@ extern void init_proxy (pid_t pid, int waiting, int status);
 extern int start_debugger(char *prog, int startup, int stop, int *debugger_fd);
 extern void fake_child_exit(void);
 extern int gdb_config(char *str);
-extern int gdb_remove(char *unused);
+extern int gdb_remove(int unused);
 
 #endif
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
diff --git a/arch/um/kernel/tt/include/mode-tt.h b/arch/um/kernel/tt/include/mode-tt.h
index efe462019069..e171e15fead5 100644
--- a/arch/um/kernel/tt/include/mode-tt.h
+++ b/arch/um/kernel/tt/include/mode-tt.h
@@ -13,7 +13,6 @@ enum { OP_NONE, OP_EXEC, OP_FORK, OP_TRACE_ON, OP_REBOOT, OP_HALT, OP_CB };
 extern int tracing_pid;
 
 extern int tracer(int (*init_proc)(void *), void *sp);
-extern void user_time_init_tt(void);
 extern void sig_handler_common_tt(int sig, void *sc);
 extern void syscall_handler_tt(int sig, union uml_pt_regs *regs);
 extern void reboot_tt(void);
diff --git a/arch/um/kernel/tt/process_kern.c b/arch/um/kernel/tt/process_kern.c
index 776310fd5b8b..a189a2b92935 100644
--- a/arch/um/kernel/tt/process_kern.c
+++ b/arch/um/kernel/tt/process_kern.c
@@ -266,10 +266,10 @@ int copy_thread_tt(int nr, unsigned long clone_flags, unsigned long sp,
         }
 
         if(current->thread.forking){
-                sc_to_sc(UPT_SC(&p->thread.regs.regs), 
-                         UPT_SC(&current->thread.regs.regs));
+                sc_to_sc(UPT_SC(&p->thread.regs.regs), UPT_SC(&regs->regs));
                 SC_SET_SYSCALL_RETURN(UPT_SC(&p->thread.regs.regs), 0);
-                if(sp != 0) SC_SP(UPT_SC(&p->thread.regs.regs)) = sp;
+                if(sp != 0)
+                        SC_SP(UPT_SC(&p->thread.regs.regs)) = sp;
         }
         p->thread.mode.tt.extern_pid = new_pid;
 
@@ -459,14 +459,3 @@ int is_valid_pid(int pid)
         read_unlock(&tasklist_lock);
         return(0);
 }
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
diff --git a/arch/um/kernel/tt/time.c b/arch/um/kernel/tt/time.c
deleted file mode 100644
index 8565b71b07cd..000000000000
--- a/arch/um/kernel/tt/time.c
+++ /dev/null
@@ -1,28 +0,0 @@
-/* 
- * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-#include <signal.h>
-#include <sys/time.h>
-#include <time_user.h>
-#include "process.h"
-#include "user.h"
-
-void user_time_init_tt(void)
-{
-        if(signal(SIGVTALRM, (__sighandler_t) alarm_handler) == SIG_ERR)
-                panic("Couldn't set SIGVTALRM handler");
-        set_interval(ITIMER_VIRTUAL);
-}
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */