---

yaml
---
r: 26567
b: refs/heads/master
c: e515f04
h: refs/heads/master
i:
  26565: dcbbd5f
  26563: 2239710
  26559: 6db1b83
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: e63a3690013a475746ad2cea998ebb534d825704
+refs/heads/master: e515f048c46e457ef61ce9c8b56bd36e825a48a0

trunk/Makefile

@@ -344,16 +344,14 @@ scripts_basic:
 scripts/basic/%: scripts_basic ;
 
 PHONY += outputmakefile
-# outputmakefile generate a Makefile to be placed in output directory, if
-# using a seperate output directory. This allows convinient use
-# of make in output directory
+# outputmakefile generates a Makefile in the output directory, if using a
+# separate output directory. This allows convenient use of make in the
+# output directory.
 outputmakefile:
-	$(Q)if test ! $(srctree) -ef $(objtree); then \
-	$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile              \
-	    $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)         \
-	    > $(objtree)/Makefile;                                 \
-	    echo '  GEN    $(objtree)/Makefile';                   \
-	fi
+ifneq ($(KBUILD_SRC),)
+	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
+	    $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
+endif
 
 # To make sure we do not include .config for any of the *config targets
 # catch them early, and hand them over to scripts/kconfig/Makefile
@@ -796,8 +794,8 @@ prepare2: prepare3 outputmakefile
 prepare1: prepare2 include/linux/version.h include/asm \
                    include/config/MARKER
 ifneq ($(KBUILD_MODULES),)
-	$(Q)rm -rf $(MODVERDIR)
 	$(Q)mkdir -p $(MODVERDIR)
+	$(Q)rm -f $(MODVERDIR)/*
 endif
 
 archprepare: prepare1 scripts_basic
@@ -1086,8 +1084,8 @@ else # KBUILD_EXTMOD
 KBUILD_MODULES := 1
 PHONY += crmodverdir
 crmodverdir:
-	$(Q)rm -rf $(MODVERDIR)
 	$(Q)mkdir -p $(MODVERDIR)
+	$(Q)rm -f $(MODVERDIR)/*
 
 PHONY += $(objtree)/Module.symvers
 $(objtree)/Module.symvers:

trunk/arch/i386/kernel/io_apic.c

@@ -2238,6 +2238,8 @@ static inline void unlock_ExtINT_logic(void)
 	spin_unlock_irqrestore(&ioapic_lock, flags);
 }
 
+int timer_uses_ioapic_pin_0;
+
 /*
  * This code may look a bit paranoid, but it's supposed to cooperate with
  * a wide range of boards and BIOS bugs.  Fortunately only the timer IRQ
@@ -2274,6 +2276,9 @@ static inline void check_timer(void)
 	pin2  = ioapic_i8259.pin;
 	apic2 = ioapic_i8259.apic;
 
+	if (pin1 == 0)
+		timer_uses_ioapic_pin_0 = 1;
+
 	printk(KERN_INFO "..TIMER: vector=0x%02X apic1=%d pin1=%d apic2=%d pin2=%d\n",
 		vector, apic1, pin1, apic2, pin2);
 

trunk/arch/i386/kernel/mpparse.c

@@ -1130,7 +1130,17 @@ int mp_register_gsi (u32 gsi, int triggering, int polarity)
 		 */
 		int irq = gsi;
 		if (gsi < MAX_GSI_NUM) {
-			if (gsi > 15)
+			/*
+			 * Retain the VIA chipset work-around (gsi > 15), but
+			 * avoid a problem where the 8254 timer (IRQ0) is setup
+			 * via an override (so it's not on pin 0 of the ioapic),
+			 * and at the same time, the pin 0 interrupt is a PCI
+			 * type.  The gsi > 15 test could cause these two pins
+			 * to be shared as IRQ0, and they are not shareable.
+			 * So test for this condition, and if necessary, avoid
+			 * the pin collision.
+			 */
+			if (gsi > 15 || (gsi == 0 && !timer_uses_ioapic_pin_0))
 				gsi = pci_irq++;
 			/*
 			 * Don't assign IRQ used by ACPI SCI

trunk/arch/ia64/lib/memcpy_mck.S

@@ -6,7 +6,9 @@
  *	in1:	source address
  *	in2:	number of bytes to copy
  * Output:
- * 	0 if success, or number of byte NOT copied if error occurred.
+ *	for memcpy:    return dest
+ * 	for copy_user: return 0 if success,
+ *		       or number of byte NOT copied if error occurred.
  *
  * Copyright (C) 2002 Intel Corp.
  * Copyright (C) 2002 Ken Chen <kenneth.w.chen@intel.com>
@@ -73,6 +75,7 @@ GLOBAL_ENTRY(memcpy)
 	and	r28=0x7,in0
 	and	r29=0x7,in1
 	mov	f6=f0
+	mov	retval=in0
 	br.cond.sptk .common_code
 	;;
 END(memcpy)
@@ -84,15 +87,15 @@ GLOBAL_ENTRY(__copy_user)
 	mov	f6=f1
 	mov	saved_in0=in0	// save dest pointer
 	mov	saved_in1=in1	// save src pointer
-	mov	saved_in2=in2	// save len
+	mov	retval=r0	// initialize return value
 	;;
 .common_code:
 	cmp.gt	p15,p0=8,in2	// check for small size
 	cmp.ne	p13,p0=0,r28	// check dest alignment
 	cmp.ne	p14,p0=0,r29	// check src alignment
 	add	src0=0,in1
 	sub	r30=8,r28	// for .align_dest
-	mov	retval=r0	// initialize return value
+	mov	saved_in2=in2	// save len
 	;;
 	add	dst0=0,in0
 	add	dst1=1,in0	// dest odd index

trunk/arch/x86_64/kernel/e820.c

@@ -76,6 +76,12 @@ static inline int bad_addr(unsigned long *addrp, unsigned long size)
 		*addrp = __pa_symbol(&_end);
 		return 1;
 	}
+
+	if (last >= ebda_addr && addr < ebda_addr + ebda_size) {
+		*addrp = ebda_addr + ebda_size;
+		return 1;
+	}
+
 	/* XXX ramdisk image here? */ 
 	return 0;
 } 

trunk/arch/x86_64/kernel/io_apic.c

@@ -1777,6 +1777,8 @@ static inline void unlock_ExtINT_logic(void)
 	spin_unlock_irqrestore(&ioapic_lock, flags);
 }
 
+int timer_uses_ioapic_pin_0;
+
 /*
  * This code may look a bit paranoid, but it's supposed to cooperate with
  * a wide range of boards and BIOS bugs.  Fortunately only the timer IRQ
@@ -1814,6 +1816,9 @@ static inline void check_timer(void)
 	pin2  = ioapic_i8259.pin;
 	apic2 = ioapic_i8259.apic;
 
+	if (pin1 == 0)
+		timer_uses_ioapic_pin_0 = 1;
+
 	apic_printk(APIC_VERBOSE,KERN_INFO "..TIMER: vector=0x%02X apic1=%d pin1=%d apic2=%d pin2=%d\n",
 		vector, apic1, pin1, apic2, pin2);
 

trunk/arch/x86_64/kernel/mpparse.c

@@ -968,7 +968,17 @@ int mp_register_gsi(u32 gsi, int triggering, int polarity)
 		 */
 		int irq = gsi;
 		if (gsi < MAX_GSI_NUM) {
-			if (gsi > 15)
+			/*
+			 * Retain the VIA chipset work-around (gsi > 15), but
+			 * avoid a problem where the 8254 timer (IRQ0) is setup
+			 * via an override (so it's not on pin 0 of the ioapic),
+			 * and at the same time, the pin 0 interrupt is a PCI
+			 * type.  The gsi > 15 test could cause these two pins
+			 * to be shared as IRQ0, and they are not shareable.
+			 * So test for this condition, and if necessary, avoid
+			 * the pin collision.
+			 */
+			if (gsi > 15 || (gsi == 0 && !timer_uses_ioapic_pin_0))
 				gsi = pci_irq++;
 			/*
 			 * Don't assign IRQ used by ACPI SCI

trunk/arch/x86_64/kernel/pci-gart.c

@@ -639,6 +639,14 @@ static int __init pci_iommu_init(void)
 		return -1;
 	}
 
+	i = 0;
+	for_all_nb(dev)
+		i++;
+	if (i > MAX_NB) {
+		printk(KERN_ERR "PCI-GART: Too many northbridges (%ld). Disabled\n", i);
+		return -1;
+	}
+
 	printk(KERN_INFO "PCI-DMA: using GART IOMMU.\n");
 	aper_size = info.aper_size * 1024 * 1024;	
 	iommu_size = check_iommu_size(info.aper_base, aper_size); 

trunk/arch/x86_64/kernel/setup.c

@@ -571,17 +571,28 @@ static inline void copy_edd(void)
 #endif
 
 #define EBDA_ADDR_POINTER 0x40E
-static void __init reserve_ebda_region(void)
+
+unsigned __initdata ebda_addr;
+unsigned __initdata ebda_size;
+
+static void discover_ebda(void)
 {
-	unsigned int addr;
-	/** 
+	/*
 	 * there is a real-mode segmented pointer pointing to the 
 	 * 4K EBDA area at 0x40E
 	 */
-	addr = *(unsigned short *)phys_to_virt(EBDA_ADDR_POINTER);
-	addr <<= 4;
-	if (addr)
-		reserve_bootmem_generic(addr, PAGE_SIZE);
+	ebda_addr = *(unsigned short *)EBDA_ADDR_POINTER;
+	ebda_addr <<= 4;
+
+	ebda_size = *(unsigned short *)(unsigned long)ebda_addr;
+
+	/* Round EBDA up to pages */
+	if (ebda_size == 0)
+		ebda_size = 1;
+	ebda_size <<= 10;
+	ebda_size = round_up(ebda_size + (ebda_addr & ~PAGE_MASK), PAGE_SIZE);
+	if (ebda_size > 64*1024)
+		ebda_size = 64*1024;
 }
 
 void __init setup_arch(char **cmdline_p)
@@ -627,6 +638,8 @@ void __init setup_arch(char **cmdline_p)
 
 	check_efer();
 
+	discover_ebda();
+
 	init_memory_mapping(0, (end_pfn_map << PAGE_SHIFT));
 
 	dmi_scan_machine();
@@ -669,7 +682,8 @@ void __init setup_arch(char **cmdline_p)
 	reserve_bootmem_generic(0, PAGE_SIZE);
 
 	/* reserve ebda region */
-	reserve_ebda_region();
+	if (ebda_addr)
+		reserve_bootmem_generic(ebda_addr, ebda_size);
 
 #ifdef CONFIG_SMP
 	/*

trunk/arch/x86_64/kernel/traps.c

@@ -385,6 +385,7 @@ void out_of_line_bug(void)
 
 static DEFINE_SPINLOCK(die_lock);
 static int die_owner = -1;
+static unsigned int die_nest_count;
 
 unsigned __kprobes long oops_begin(void)
 {
@@ -399,6 +400,7 @@ unsigned __kprobes long oops_begin(void)
 		else
 			spin_lock(&die_lock);
 	}
+	die_nest_count++;
 	die_owner = cpu;
 	console_verbose();
 	bust_spinlocks(1);
@@ -409,7 +411,13 @@ void __kprobes oops_end(unsigned long flags)
 { 
 	die_owner = -1;
 	bust_spinlocks(0);
-	spin_unlock_irqrestore(&die_lock, flags);
+	die_nest_count--;
+	if (die_nest_count)
+		/* We still own the lock */
+		local_irq_restore(flags);
+	else
+		/* Nest count reaches zero, release the lock. */
+		spin_unlock_irqrestore(&die_lock, flags);
 	if (panic_on_oops)
 		panic("Oops");
 }
@@ -464,6 +472,8 @@ void __kprobes die_nmi(char *str, struct pt_regs *regs)
 		panic("nmi watchdog");
 	printk("console shuts up ...\n");
 	oops_end(flags);
+	nmi_exit();
+	local_irq_enable();
 	do_exit(SIGSEGV);
 }
 

trunk/drivers/base/class.c

@@ -456,6 +456,35 @@ static void class_device_remove_attrs(struct class_device * cd)
 	}
 }
 
+static int class_device_add_groups(struct class_device * cd)
+{
+	int i;
+	int error = 0;
+
+	if (cd->groups) {
+		for (i = 0; cd->groups[i]; i++) {
+			error = sysfs_create_group(&cd->kobj, cd->groups[i]);
+			if (error) {
+				while (--i >= 0)
+					sysfs_remove_group(&cd->kobj, cd->groups[i]);
+				goto out;
+			}
+		}
+	}
+out:
+	return error;
+}
+
+static void class_device_remove_groups(struct class_device * cd)
+{
+	int i;
+	if (cd->groups) {
+		for (i = 0; cd->groups[i]; i++) {
+			sysfs_remove_group(&cd->kobj, cd->groups[i]);
+		}
+	}
+}
+
 static ssize_t show_dev(struct class_device *class_dev, char *buf)
 {
 	return print_dev_t(buf, class_dev->devt);
@@ -559,6 +588,8 @@ int class_device_add(struct class_device *class_dev)
 				  class_name);
 	}
 
+	class_device_add_groups(class_dev);
+
 	kobject_uevent(&class_dev->kobj, KOBJ_ADD);
 
 	/* notify any interfaces this device is now here */
@@ -672,6 +703,7 @@ void class_device_del(struct class_device *class_dev)
 	if (class_dev->devt_attr)
 		class_device_remove_file(class_dev, class_dev->devt_attr);
 	class_device_remove_attrs(class_dev);
+	class_device_remove_groups(class_dev);
 
 	kobject_uevent(&class_dev->kobj, KOBJ_REMOVE);
 	kobject_del(&class_dev->kobj);

trunk/drivers/cpufreq/cpufreq_ondemand.c

@@ -74,6 +74,8 @@ static unsigned int dbs_enable;	/* number of CPUs using this policy */
 static DEFINE_MUTEX (dbs_mutex);
 static DECLARE_WORK	(dbs_work, do_dbs_timer, NULL);
 
+static struct workqueue_struct *dbs_workq;
+
 struct dbs_tuners {
 	unsigned int sampling_rate;
 	unsigned int sampling_down_factor;
@@ -364,23 +366,29 @@ static void do_dbs_timer(void *data)
 	mutex_lock(&dbs_mutex);
 	for_each_online_cpu(i)
 		dbs_check_cpu(i);
-	schedule_delayed_work(&dbs_work,
-			usecs_to_jiffies(dbs_tuners_ins.sampling_rate));
+	queue_delayed_work(dbs_workq, &dbs_work,
+			   usecs_to_jiffies(dbs_tuners_ins.sampling_rate));
 	mutex_unlock(&dbs_mutex);
 }
 
 static inline void dbs_timer_init(void)
 {
 	INIT_WORK(&dbs_work, do_dbs_timer, NULL);
-	schedule_delayed_work(&dbs_work,
-			usecs_to_jiffies(dbs_tuners_ins.sampling_rate));
+	if (!dbs_workq)
+		dbs_workq = create_singlethread_workqueue("ondemand");
+	if (!dbs_workq) {
+		printk(KERN_ERR "ondemand: Cannot initialize kernel thread\n");
+		return;
+	}
+	queue_delayed_work(dbs_workq, &dbs_work,
+			   usecs_to_jiffies(dbs_tuners_ins.sampling_rate));
 	return;
 }
 
 static inline void dbs_timer_exit(void)
 {
-	cancel_delayed_work(&dbs_work);
-	return;
+	if (dbs_workq)
+		cancel_rearming_delayed_workqueue(dbs_workq, &dbs_work);
 }
 
 static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
@@ -489,8 +497,12 @@ static int __init cpufreq_gov_dbs_init(void)
 
 static void __exit cpufreq_gov_dbs_exit(void)
 {
-	/* Make sure that the scheduled work is indeed not running */
-	flush_scheduled_work();
+	/* Make sure that the scheduled work is indeed not running.
+	   Assumes the timer has been cancelled first. */
+	if (dbs_workq) {
+		flush_workqueue(dbs_workq);
+		destroy_workqueue(dbs_workq);
+	}
 
 	cpufreq_unregister_governor(&cpufreq_gov_dbs);
 }