Merge commit 'v2.6.35' into kbuild/kbuild

Conflicts:
	arch/powerpc/Makefile

arch/m32r/include/asm/atomic.h

@@ -26,7 +26,7 @@
  *
  * Atomically reads the value of @v.
  */
-#define atomic_read(v)	((v)->counter)
+#define atomic_read(v)	(*(volatile int *)&(v)->counter)
 
 /**
  * atomic_set - set atomic variable

arch/m32r/include/asm/local.h

@@ -338,29 +338,4 @@ static inline void local_set_mask(unsigned long  mask, local_t *addr)
  * a variable, not an address.
  */
 
-/* Need to disable preemption for the cpu local counters otherwise we could
-   still access a variable of a previous CPU in a non local way. */
-#define cpu_local_wrap_v(l)	 	\
-	({ local_t res__;		\
-	   preempt_disable(); 		\
-	   res__ = (l);			\
-	   preempt_enable();		\
-	   res__; })
-#define cpu_local_wrap(l)		\
-	({ preempt_disable();		\
-	   l;				\
-	   preempt_enable(); })		\
-
-#define cpu_local_read(l)    cpu_local_wrap_v(local_read(&__get_cpu_var(l)))
-#define cpu_local_set(l, i)  cpu_local_wrap(local_set(&__get_cpu_var(l), (i)))
-#define cpu_local_inc(l)     cpu_local_wrap(local_inc(&__get_cpu_var(l)))
-#define cpu_local_dec(l)     cpu_local_wrap(local_dec(&__get_cpu_var(l)))
-#define cpu_local_add(i, l)  cpu_local_wrap(local_add((i), &__get_cpu_var(l)))
-#define cpu_local_sub(i, l)  cpu_local_wrap(local_sub((i), &__get_cpu_var(l)))
-
-#define __cpu_local_inc(l)	cpu_local_inc(l)
-#define __cpu_local_dec(l)	cpu_local_dec(l)
-#define __cpu_local_add(i, l)	cpu_local_add((i), (l))
-#define __cpu_local_sub(i, l)	cpu_local_sub((i), (l))
-
 #endif /* __M32R_LOCAL_H */

arch/m32r/include/asm/ptrace.h

@@ -120,6 +120,8 @@ struct pt_regs {
 
 #include <asm/m32r.h>		/* M32R_PSW_BSM, M32R_PSW_BPM */
 
+#define arch_has_single_step() (1)
+
 struct task_struct;
 extern void init_debug_traps(struct task_struct *);
 #define arch_ptrace_attach(child) \

arch/m32r/include/asm/scatterlist.h

@@ -1,20 +1,7 @@
 #ifndef _ASM_M32R_SCATTERLIST_H
 #define _ASM_M32R_SCATTERLIST_H
 
-#include <asm/types.h>
-
-struct scatterlist {
-#ifdef CONFIG_DEBUG_SG
-    unsigned long sg_magic;
-#endif
-    char *  address;    /* Location data is to be transferred to, NULL for
-                         * highmem page */
-    unsigned long page_link;
-    unsigned int offset;/* for highmem, page offset */
-
-    dma_addr_t dma_address;
-    unsigned int length;
-};
+#include <asm-generic/scatterlist.h>
 
 #define ISA_DMA_THRESHOLD (0x1fffffff)
 

arch/m32r/include/asm/thread_info.h

@@ -142,7 +142,7 @@ static inline unsigned int get_thread_fault_code(void)
 #define TIF_RESTORE_SIGMASK	8	/* restore signal mask in do_signal() */
 #define TIF_USEDFPU		16	/* FPU was used by this task this quantum (SMP) */
 #define TIF_POLLING_NRFLAG	17	/* true if poll_idle() is polling TIF_NEED_RESCHED */
-#define TIF_MEMDIE		18	/* OOM killer killed process */
+#define TIF_MEMDIE		18	/* is terminating due to OOM killer */
 #define TIF_FREEZE		19	/* is freezing for suspend */
 
 #define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)

arch/m32r/include/asm/tlbflush.h

@@ -92,6 +92,6 @@ static __inline__ void __flush_tlb_all(void)
 	);
 }
 
-extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t);
+extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t *);
 
 #endif	/* _ASM_M32R_TLBFLUSH_H */

arch/m32r/include/asm/unistd.h

@@ -339,6 +339,7 @@
 #define __ARCH_WANT_STAT64
 #define __ARCH_WANT_SYS_ALARM
 #define __ARCH_WANT_SYS_GETHOSTNAME
+#define __ARCH_WANT_SYS_IPC
 #define __ARCH_WANT_SYS_PAUSE
 #define __ARCH_WANT_SYS_TIME
 #define __ARCH_WANT_SYS_UTIME

arch/m32r/kernel/process.c

@@ -21,10 +21,10 @@
  */
 
 #include <linux/fs.h>
+#include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/ptrace.h>
 #include <linux/unistd.h>
-#include <linux/slab.h>
 #include <linux/hardirq.h>
 
 #include <asm/io.h>

arch/m32r/kernel/ptrace.c

@@ -580,6 +580,35 @@ init_debug_traps(struct task_struct *child)
 	}
 }
 
+void user_enable_single_step(struct task_struct *child)
+{
+	unsigned long next_pc;
+	unsigned long pc, insn;
+
+	clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
+
+	/* Compute next pc.  */
+	pc = get_stack_long(child, PT_BPC);
+
+	if (access_process_vm(child, pc&~3, &insn, sizeof(insn), 0)
+	    != sizeof(insn))
+		break;
+
+	compute_next_pc(insn, pc, &next_pc, child);
+	if (next_pc & 0x80000000)
+		break;
+
+	if (embed_debug_trap(child, next_pc))
+		break;
+
+	invalidate_cache();
+}
+
+void user_disable_single_step(struct task_struct *child)
+{
+	unregister_all_debug_traps(child);
+	invalidate_cache();
+}
 
 /*
  * Called by kernel/ptrace.c when detaching..
@@ -630,74 +659,6 @@ arch_ptrace(struct task_struct *child, long request, long addr, long data)
 		ret = ptrace_write_user(child, addr, data);
 		break;
 
-	/*
-	 * continue/restart and stop at next (return from) syscall
-	 */
-	case PTRACE_SYSCALL:
-	case PTRACE_CONT:
-		ret = -EIO;
-		if (!valid_signal(data))
-			break;
-		if (request == PTRACE_SYSCALL)
-			set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-		else
-			clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-		child->exit_code = data;
-		wake_up_process(child);
-		ret = 0;
-		break;
-
-	/*
-	 * make the child exit.  Best I can do is send it a sigkill.
-	 * perhaps it should be put in the status that it wants to
-	 * exit.
-	 */
-	case PTRACE_KILL: {
-		ret = 0;
-		unregister_all_debug_traps(child);
-		invalidate_cache();
-		if (child->exit_state == EXIT_ZOMBIE)	/* already dead */
-			break;
-		child->exit_code = SIGKILL;
-		wake_up_process(child);
-		break;
-	}
-
-	/*
-	 * execute single instruction.
-	 */
-	case PTRACE_SINGLESTEP: {
-		unsigned long next_pc;
-		unsigned long pc, insn;
-
-		ret = -EIO;
-		if (!valid_signal(data))
-			break;
-		clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-
-		/* Compute next pc.  */
-		pc = get_stack_long(child, PT_BPC);
-
-		if (access_process_vm(child, pc&~3, &insn, sizeof(insn), 0)
-		    != sizeof(insn))
-			break;
-
-		compute_next_pc(insn, pc, &next_pc, child);
-		if (next_pc & 0x80000000)
-			break;
-
-		if (embed_debug_trap(child, next_pc))
-			break;
-
-		invalidate_cache();
-		child->exit_code = data;
-
-		/* give it a chance to run. */
-		wake_up_process(child);
-		ret = 0;
-		break;
-	}
-
 	case PTRACE_GETREGS:
 		ret = ptrace_getregs(child, (void __user *)data);
 		break;

arch/m32r/kernel/sys_m32r.c

@@ -76,98 +76,6 @@ asmlinkage int sys_tas(int __user *addr)
 	return oldval;
 }
 
-/*
- * sys_ipc() is the de-multiplexer for the SysV IPC calls..
- *
- * This is really horribly ugly.
- */
-asmlinkage int sys_ipc(uint call, int first, int second,
-		       int third, void __user *ptr, long fifth)
-{
-	int version, ret;
-
-	version = call >> 16; /* hack for backward compatibility */
-	call &= 0xffff;
-
-	switch (call) {
-	case SEMOP:
-		return sys_semtimedop(first, (struct sembuf __user *)ptr,
-				      second, NULL);
-	case SEMTIMEDOP:
-		return sys_semtimedop(first, (struct sembuf __user *)ptr,
-				      second, (const struct timespec __user *)fifth);
-	case SEMGET:
-		return sys_semget (first, second, third);
-	case SEMCTL: {
-		union semun fourth;
-		if (!ptr)
-			return -EINVAL;
-		if (get_user(fourth.__pad, (void __user * __user *) ptr))
-			return -EFAULT;
-		return sys_semctl (first, second, third, fourth);
-		}
-
-	case MSGSND:
-		return sys_msgsnd (first, (struct msgbuf __user *) ptr,
-				   second, third);
-	case MSGRCV:
-		switch (version) {
-		case 0: {
-			struct ipc_kludge tmp;
-			if (!ptr)
-				return -EINVAL;
-
-			if (copy_from_user(&tmp,
-					   (struct ipc_kludge __user *) ptr,
-					   sizeof (tmp)))
-				return -EFAULT;
-			return sys_msgrcv (first, tmp.msgp, second,
-					   tmp.msgtyp, third);
-			}
-		default:
-			return sys_msgrcv (first,
-					   (struct msgbuf __user *) ptr,
-					   second, fifth, third);
-		}
-	case MSGGET:
-		return sys_msgget ((key_t) first, second);
-	case MSGCTL:
-		return sys_msgctl (first, second,
-				   (struct msqid_ds __user *) ptr);
-	case SHMAT: {
-		ulong raddr;
-
-		if (!access_ok(VERIFY_WRITE, (ulong __user *) third,
-				      sizeof(ulong)))
-			return -EFAULT;
-		ret = do_shmat (first, (char __user *) ptr, second, &raddr);
-		if (ret)
-			return ret;
-		return put_user (raddr, (ulong __user *) third);
-		}
-	case SHMDT:
-		return sys_shmdt ((char __user *)ptr);
-	case SHMGET:
-		return sys_shmget (first, second, third);
-	case SHMCTL:
-		return sys_shmctl (first, second,
-				   (struct shmid_ds __user *) ptr);
-	default:
-		return -ENOSYS;
-	}
-}
-
-asmlinkage int sys_uname(struct old_utsname __user * name)
-{
-	int err;
-	if (!name)
-		return -EFAULT;
-	down_read(&uts_sem);
-	err = copy_to_user(name, utsname(), sizeof (*name));
-	up_read(&uts_sem);
-	return err?-EFAULT:0;
-}
-
 asmlinkage int sys_cacheflush(void *addr, int bytes, int cache)
 {
 	/* This should flush more selectively ...  */

arch/m32r/kernel/time.c

@@ -105,24 +105,6 @@ u32 arch_gettimeoffset(void)
 	return elapsed_time * 1000;
 }
 
-/*
- * In order to set the CMOS clock precisely, set_rtc_mmss has to be
- * called 500 ms after the second nowtime has started, because when
- * nowtime is written into the registers of the CMOS clock, it will
- * jump to the next second precisely 500 ms later. Check the Motorola
- * MC146818A or Dallas DS12887 data sheet for details.
- *
- * BUG: This routine does not handle hour overflow properly; it just
- *      sets the minutes. Usually you won't notice until after reboot!
- */
-static inline int set_rtc_mmss(unsigned long nowtime)
-{
-	return 0;
-}
-
-/* last time the cmos clock got updated */
-static long last_rtc_update = 0;
-
 /*
  * timer_interrupt() needs to keep up the real-time clock,
  * as well as call the "do_timer()" routine every clocktick
@@ -138,23 +120,6 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id)
 #ifndef CONFIG_SMP
 	update_process_times(user_mode(get_irq_regs()));
 #endif
-	/*
-	 * If we have an externally synchronized Linux clock, then update
-	 * CMOS clock accordingly every ~11 minutes. Set_rtc_mmss() has to be
-	 * called as close as possible to 500 ms before the new second starts.
-	 */
-	write_seqlock(&xtime_lock);
-	if (ntp_synced()
-		&& xtime.tv_sec > last_rtc_update + 660
-		&& (xtime.tv_nsec / 1000) >= 500000 - ((unsigned)TICK_SIZE) / 2
-		&& (xtime.tv_nsec / 1000) <= 500000 + ((unsigned)TICK_SIZE) / 2)
-	{
-		if (set_rtc_mmss(xtime.tv_sec) == 0)
-			last_rtc_update = xtime.tv_sec;
-		else	/* do it again in 60 s */
-			last_rtc_update = xtime.tv_sec - 600;
-	}
-	write_sequnlock(&xtime_lock);
 	/* As we return to user mode fire off the other CPU schedulers..
 	   this is basically because we don't yet share IRQ's around.
 	   This message is rigged to be safe on the 386 - basically it's
@@ -174,7 +139,7 @@ static struct irqaction irq0 = {
 	.name = "MFT2",
 };
 
-void __init time_init(void)
+void read_persistent_clock(struct timespec *ts)
 {
 	unsigned int epoch, year, mon, day, hour, min, sec;
 
@@ -194,11 +159,13 @@ void __init time_init(void)
 		epoch = 1952;
 	year += epoch;
 
-	xtime.tv_sec = mktime(year, mon, day, hour, min, sec);
-	xtime.tv_nsec = (INITIAL_JIFFIES % HZ) * (NSEC_PER_SEC / HZ);
-	set_normalized_timespec(&wall_to_monotonic,
-		-xtime.tv_sec, -xtime.tv_nsec);
+	ts->tv_sec = mktime(year, mon, day, hour, min, sec);
+	ts->tv_nsec = (INITIAL_JIFFIES % HZ) * (NSEC_PER_SEC / HZ);
+}
 
+
+void __init time_init(void)
+{
 #if defined(CONFIG_CHIP_M32102) || defined(CONFIG_CHIP_XNUX2) \
 	|| defined(CONFIG_CHIP_VDEC2) || defined(CONFIG_CHIP_M32700) \
 	|| defined(CONFIG_CHIP_OPSP) || defined(CONFIG_CHIP_M32104)

arch/m32r/mm/fault-nommu.c

@@ -95,7 +95,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code,
  * update_mmu_cache()
  *======================================================================*/
 void update_mmu_cache(struct vm_area_struct *vma, unsigned long addr,
-	pte_t pte)
+	pte_t *ptep)
 {
 	BUG();
 }

arch/m32r/mm/fault.c

@@ -188,7 +188,6 @@ good_area:
 	if ((error_code & ACE_INSTRUCTION) && !(vma->vm_flags & VM_EXEC))
 	  goto bad_area;
 
-survive:
 	/*
 	 * If for any reason at all we couldn't handle the fault,
 	 * make sure we exit gracefully rather than endlessly redo
@@ -271,15 +270,10 @@ no_context:
  */
 out_of_memory:
 	up_read(&mm->mmap_sem);
-	if (is_global_init(tsk)) {
-		yield();
-		down_read(&mm->mmap_sem);
-		goto survive;
-	}
-	printk("VM: killing process %s\n", tsk->comm);
-	if (error_code & ACE_USERMODE)
-		do_group_exit(SIGKILL);
-	goto no_context;
+	if (!(error_code & ACE_USERMODE))
+		goto no_context;
+	pagefault_out_of_memory();
+	return;
 
 do_sigbus:
 	up_read(&mm->mmap_sem);
@@ -336,7 +330,7 @@ vmalloc_fault:
 
 		addr = (address & PAGE_MASK);
 		set_thread_fault_code(error_code);
-		update_mmu_cache(NULL, addr, *pte_k);
+		update_mmu_cache(NULL, addr, pte_k);
 		set_thread_fault_code(0);
 		return;
 	}
@@ -349,7 +343,7 @@ vmalloc_fault:
 #define ITLB_END	(unsigned long *)(ITLB_BASE + (NR_TLB_ENTRIES * 8))
 #define DTLB_END	(unsigned long *)(DTLB_BASE + (NR_TLB_ENTRIES * 8))
 void update_mmu_cache(struct vm_area_struct *vma, unsigned long vaddr,
-	pte_t pte)
+	pte_t *ptep)
 {
 	volatile unsigned long *entry1, *entry2;
 	unsigned long pte_data, flags;
@@ -365,7 +359,7 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long vaddr,
 
 	vaddr = (vaddr & PAGE_MASK) | get_asid();
 
-	pte_data = pte_val(pte);
+	pte_data = pte_val(*ptep);
 
 #ifdef CONFIG_CHIP_OPSP
 	entry1 = (unsigned long *)ITLB_BASE;

arch/m32r/mm/init.c

@@ -19,6 +19,7 @@
 #include <linux/bitops.h>
 #include <linux/nodemask.h>
 #include <linux/pfn.h>
+#include <linux/gfp.h>
 #include <asm/types.h>
 #include <asm/processor.h>
 #include <asm/page.h>