Merge branch 'master' of /home/trondmy/kernel/linux-2.6/

7 files changed, 26 insertions, 210 deletions

diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c
index 2ffda012385e..bfd0bdc8cd40 100644
--- a/arch/um/kernel/irq.c
+++ b/arch/um/kernel/irq.c
@@ -63,7 +63,7 @@ int show_interrupts(struct seq_file *p, void *v)
                 for_each_online_cpu(j)
                         seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
 #endif
-                seq_printf(p, " %14s", irq_desc[i].handler->typename);
+                seq_printf(p, " %14s", irq_desc[i].chip->typename);
                 seq_printf(p, "  %s", action->name);
 
                 for (action=action->next; action; action = action->next)
@@ -451,13 +451,13 @@ void __init init_IRQ(void)
         irq_desc[TIMER_IRQ].status = IRQ_DISABLED;
         irq_desc[TIMER_IRQ].action = NULL;
         irq_desc[TIMER_IRQ].depth = 1;
-        irq_desc[TIMER_IRQ].handler = &SIGVTALRM_irq_type;
+        irq_desc[TIMER_IRQ].chip = &SIGVTALRM_irq_type;
         enable_irq(TIMER_IRQ);
         for (i = 1; i < NR_IRQS; i++) {
                 irq_desc[i].status = IRQ_DISABLED;
                 irq_desc[i].action = NULL;
                 irq_desc[i].depth = 1;
-                irq_desc[i].handler = &normal_irq_type;
+                irq_desc[i].chip = &normal_irq_type;
                 enable_irq(i);
         }
 }
@@ -474,7 +474,7 @@ int init_aio_irq(int irq, char *name, irqreturn_t (*handler)(int, void *,
         }
 
         err = um_request_irq(irq, fds[0], IRQ_READ, handler,
-                             SA_INTERRUPT | SA_SAMPLE_RANDOM, name,
+                             IRQF_DISABLED | IRQF_SAMPLE_RANDOM, name,
                              (void *) (long) fds[0]);
         if (err) {
                 printk("init_aio_irq - : um_request_irq failed, err = %d\n",
diff --git a/arch/um/kernel/sigio_kern.c b/arch/um/kernel/sigio_kern.c
index 1c1300fb1e95..51b677083948 100644
--- a/arch/um/kernel/sigio_kern.c
+++ b/arch/um/kernel/sigio_kern.c
@@ -31,7 +31,7 @@ int write_sigio_irq(int fd)
         int err;
 
         err = um_request_irq(SIGIO_WRITE_IRQ, fd, IRQ_READ, sigio_interrupt,
-                             SA_INTERRUPT | SA_SAMPLE_RANDOM, "write sigio",
+                             IRQF_DISABLED | IRQF_SAMPLE_RANDOM, "write sigio",
                              NULL);
         if(err){
                 printk("write_sigio_irq : um_request_irq failed, err = %d\n",
diff --git a/arch/um/kernel/skas/mmu.c b/arch/um/kernel/skas/mmu.c
index c5c9885a8297..624ca238d1fd 100644
--- a/arch/um/kernel/skas/mmu.c
+++ b/arch/um/kernel/skas/mmu.c
@@ -152,7 +152,7 @@ void destroy_context_skas(struct mm_struct *mm)
                 free_page(mmu->id.stack);
                 pte_lock_deinit(virt_to_page(mmu->last_page_table));
                 pte_free_kernel((pte_t *) mmu->last_page_table);
-                dec_page_state(nr_page_table_pages);
+                dec_zone_page_state(virt_to_page(mmu->last_page_table), NR_PAGETABLE);
 #ifdef CONFIG_3_LEVEL_PGTABLES
                 pmd_free((pmd_t *) mmu->last_pmd);
 #endif
diff --git a/arch/um/kernel/skas/uaccess.c b/arch/um/kernel/skas/uaccess.c
index 5992c3257167..8912cec0fe43 100644
--- a/arch/um/kernel/skas/uaccess.c
+++ b/arch/um/kernel/skas/uaccess.c
@@ -8,6 +8,7 @@
 #include "linux/kernel.h"
 #include "linux/string.h"
 #include "linux/fs.h"
+#include "linux/hardirq.h"
 #include "linux/highmem.h"
 #include "asm/page.h"
 #include "asm/pgtable.h"
@@ -38,7 +39,7 @@ static unsigned long maybe_map(unsigned long virt, int is_write)
         return((unsigned long) phys);
 }
 
-static int do_op(unsigned long addr, int len, int is_write,
+static int do_op_one_page(unsigned long addr, int len, int is_write,
                  int (*op)(unsigned long addr, int len, void *arg), void *arg)
 {
         struct page *page;
@@ -49,9 +50,11 @@ static int do_op(unsigned long addr, int len, int is_write,
                 return(-1);
 
         page = phys_to_page(addr);
-        addr = (unsigned long) kmap(page) + (addr & ~PAGE_MASK);
+        addr = (unsigned long) kmap_atomic(page, KM_UML_USERCOPY) + (addr & ~PAGE_MASK);
+
         n = (*op)(addr, len, arg);
-        kunmap(page);
+
+        kunmap_atomic(page, KM_UML_USERCOPY);
 
         return(n);
 }
@@ -77,7 +80,7 @@ static void do_buffer_op(void *jmpbuf, void *arg_ptr)
         remain = len;
 
         current->thread.fault_catcher = jmpbuf;
-        n = do_op(addr, size, is_write, op, arg);
+        n = do_op_one_page(addr, size, is_write, op, arg);
         if(n != 0){
                 *res = (n < 0 ? remain : 0);
                 goto out;
@@ -91,7 +94,7 @@ static void do_buffer_op(void *jmpbuf, void *arg_ptr)
         }
 
         while(addr < ((addr + remain) & PAGE_MASK)){
-                n = do_op(addr, PAGE_SIZE, is_write, op, arg);
+                n = do_op_one_page(addr, PAGE_SIZE, is_write, op, arg);
                 if(n != 0){
                         *res = (n < 0 ? remain : 0);
                         goto out;
@@ -105,7 +108,7 @@ static void do_buffer_op(void *jmpbuf, void *arg_ptr)
                 goto out;
         }
 
-        n = do_op(addr, remain, is_write, op, arg);
+        n = do_op_one_page(addr, remain, is_write, op, arg);
         if(n != 0)
                 *res = (n < 0 ? remain : 0);
         else *res = 0;
diff --git a/arch/um/kernel/time.c b/arch/um/kernel/time.c
deleted file mode 100644
index 8fa2ae7f3026..000000000000
--- a/arch/um/kernel/time.c
+++ /dev/null
@@ -1,172 +0,0 @@
-/* 
- * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <time.h>
-#include <sys/time.h>
-#include <signal.h>
-#include <errno.h>
-#include "user_util.h"
-#include "kern_util.h"
-#include "user.h"
-#include "process.h"
-#include "time_user.h"
-#include "kern_constants.h"
-#include "os.h"
-
-/* XXX This really needs to be declared and initialized in a kernel file since
- * it's in <linux/time.h>
- */
-extern struct timespec wall_to_monotonic;
-
-extern struct timeval xtime;
-
-struct timeval local_offset = { 0, 0 };
-
-void timer(void)
-{
-        gettimeofday(&xtime, NULL);
-        timeradd(&xtime, &local_offset, &xtime);
-}
-
-static void set_interval(int timer_type)
-{
-        int usec = 1000000/hz();
-        struct itimerval interval = ((struct itimerval) { { 0, usec },
-                                                          { 0, usec } });
-
-        if(setitimer(timer_type, &interval, NULL) == -1)
-                panic("setitimer failed - errno = %d\n", errno);
-}
-
-void enable_timer(void)
-{
-        set_interval(ITIMER_VIRTUAL);
-}
-
-void prepare_timer(void * ptr)
-{
-        int usec = 1000000/hz();
-        *(struct itimerval *)ptr = ((struct itimerval) { { 0, usec },
-                                                         { 0, usec }});
-}
-
-void disable_timer(void)
-{
-        struct itimerval disable = ((struct itimerval) { { 0, 0 }, { 0, 0 }});
-        if((setitimer(ITIMER_VIRTUAL, &disable, NULL) < 0) ||
-           (setitimer(ITIMER_REAL, &disable, NULL) < 0))
-                printk("disnable_timer - setitimer failed, errno = %d\n",
-                       errno);
-        /* If there are signals already queued, after unblocking ignore them */
-        set_handler(SIGALRM, SIG_IGN, 0, -1);
-        set_handler(SIGVTALRM, SIG_IGN, 0, -1);
-}
-
-void switch_timers(int to_real)
-{
-        struct itimerval disable = ((struct itimerval) { { 0, 0 }, { 0, 0 }});
-        struct itimerval enable = ((struct itimerval) { { 0, 1000000/hz() },
-                                                        { 0, 1000000/hz() }});
-        int old, new;
-
-        if(to_real){
-                old = ITIMER_VIRTUAL;
-                new = ITIMER_REAL;
-        }
-        else {
-                old = ITIMER_REAL;
-                new = ITIMER_VIRTUAL;
-        }
-
-        if((setitimer(old, &disable, NULL) < 0) ||
-           (setitimer(new, &enable, NULL)))
-                printk("switch_timers - setitimer failed, errno = %d\n",
-                       errno);
-}
-
-void uml_idle_timer(void)
-{
-        if(signal(SIGVTALRM, SIG_IGN) == SIG_ERR)
-                panic("Couldn't unset SIGVTALRM handler");
-        
-        set_handler(SIGALRM, (__sighandler_t) alarm_handler, 
-                    SA_RESTART, SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1);
-        set_interval(ITIMER_REAL);
-}
-
-extern void ktime_get_ts(struct timespec *ts);
-#define do_posix_clock_monotonic_gettime(ts) ktime_get_ts(ts)
-
-void time_init(void)
-{
-        struct timespec now;
-
-        if(signal(SIGVTALRM, boot_timer_handler) == SIG_ERR)
-                panic("Couldn't set SIGVTALRM handler");
-        set_interval(ITIMER_VIRTUAL);
-
-        do_posix_clock_monotonic_gettime(&now);
-        wall_to_monotonic.tv_sec = -now.tv_sec;
-        wall_to_monotonic.tv_nsec = -now.tv_nsec;
-}
-
-/* Defined in linux/ktimer.h, which can't be included here */
-#define clock_was_set()         do { } while (0)
-
-void do_gettimeofday(struct timeval *tv)
-{
-        unsigned long flags;
-
-        flags = time_lock();
-        gettimeofday(tv, NULL);
-        timeradd(tv, &local_offset, tv);
-        time_unlock(flags);
-        clock_was_set();
-}
-
-int do_settimeofday(struct timespec *tv)
-{
-        struct timeval now;
-        unsigned long flags;
-        struct timeval tv_in;
-
-        if ((unsigned long) tv->tv_nsec >= UM_NSEC_PER_SEC)
-                return -EINVAL;
-
-        tv_in.tv_sec = tv->tv_sec;
-        tv_in.tv_usec = tv->tv_nsec / 1000;
-
-        flags = time_lock();
-        gettimeofday(&now, NULL);
-        timersub(&tv_in, &now, &local_offset);
-        time_unlock(flags);
-
-        return(0);
-}
-
-void idle_sleep(int secs)
-{
-        struct timespec ts;
-
-        ts.tv_sec = secs;
-        ts.tv_nsec = 0;
-        nanosleep(&ts, NULL);
-}
-
-/* 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 87cdbc560d36..d7e044b5e5ee 100644
--- a/arch/um/kernel/time_kern.c
+++ b/arch/um/kernel/time_kern.c
@@ -96,11 +96,15 @@ void time_init_kern(void)
 
 void do_boot_timer_handler(struct sigcontext * sc)
 {
+        unsigned long flags;
         struct pt_regs regs;
 
         CHOOSE_MODE((void) (UPT_SC(&regs.regs) = sc),
                     (void) (regs.regs.skas.is_user = 0));
+
+        write_seqlock_irqsave(&xtime_lock, flags);
         do_timer(&regs);
+        write_sequnlock_irqrestore(&xtime_lock, flags);
 }
 
 static DEFINE_SPINLOCK(timer_spinlock);
@@ -125,25 +129,17 @@ irqreturn_t um_timer(int irq, void *dev, struct pt_regs *regs)
         unsigned long long nsecs;
         unsigned long flags;
 
+        write_seqlock_irqsave(&xtime_lock, flags);
+
         do_timer(regs);
 
-        write_seqlock_irqsave(&xtime_lock, flags);
         nsecs = get_time() + local_offset;
         xtime.tv_sec = nsecs / NSEC_PER_SEC;
         xtime.tv_nsec = nsecs - xtime.tv_sec * NSEC_PER_SEC;
-        write_sequnlock_irqrestore(&xtime_lock, flags);
-
-        return(IRQ_HANDLED);
-}
 
-long um_time(int __user *tloc)
-{
-        long ret = get_time() / NSEC_PER_SEC;
-
-        if((tloc != NULL) && put_user(ret, tloc))
-                return -EFAULT;
+        write_sequnlock_irqrestore(&xtime_lock, flags);
 
-        return ret;
+        return IRQ_HANDLED;
 }
 
 void do_gettimeofday(struct timeval *tv)
@@ -174,18 +170,6 @@ static inline void set_time(unsigned long long nsecs)
         clock_was_set();
 }
 
-long um_stime(int __user *tptr)
-{
-        int value;
-
-        if (get_user(value, tptr))
-                return -EFAULT;
-
-        set_time((unsigned long long) value * NSEC_PER_SEC);
-
-        return 0;
-}
-
 int do_settimeofday(struct timespec *tv)
 {
         set_time((unsigned long long) tv->tv_sec * NSEC_PER_SEC + tv->tv_nsec);
@@ -211,7 +195,7 @@ int __init timer_init(void)
         int err;
 
         user_time_init();
-        err = request_irq(TIMER_IRQ, um_timer, SA_INTERRUPT, "timer", NULL);
+        err = request_irq(TIMER_IRQ, um_timer, IRQF_DISABLED, "timer", NULL);
         if(err != 0)
                 printk(KERN_ERR "timer_init : request_irq failed - "
                        "errno = %d\n", -err);
diff --git a/arch/um/kernel/vmlinux.lds.S b/arch/um/kernel/vmlinux.lds.S
index 1660a769674b..72acdce205e0 100644
--- a/arch/um/kernel/vmlinux.lds.S
+++ b/arch/um/kernel/vmlinux.lds.S
@@ -1,4 +1,5 @@
-#include <linux/config.h>
+/* in case the preprocessor is a 32bit one */
+#undef i386
 #ifdef CONFIG_LD_SCRIPT_STATIC
 #include "uml.lds.S"
 #else