---

yaml
---
r: 233765
b: refs/heads/master
c: ac81831
h: refs/heads/master
i:
  233763: b06b980
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 8a304e5dfb2bd5b75cb20cb6b420935665c97a40
+refs/heads/master: ac818314499b707a97690d5ee835e6ba40a407c1

trunk/arch/powerpc/include/asm/machdep.h

@@ -240,12 +240,6 @@ struct machdep_calls {
 	 * claims to support kexec.
 	 */
 	int (*machine_kexec_prepare)(struct kimage *image);
-
-	/* Called to perform the _real_ kexec.
-	 * Do NOT allocate memory or fail here. We are past the point of
-	 * no return.
-	 */
-	void (*machine_kexec)(struct kimage *image);
 #endif /* CONFIG_KEXEC */
 
 #ifdef CONFIG_SUSPEND

trunk/arch/powerpc/kernel/machine_kexec.c

@@ -87,10 +87,7 @@ void machine_kexec(struct kimage *image)
 
 	save_ftrace_enabled = __ftrace_enabled_save();
 
-	if (ppc_md.machine_kexec)
-		ppc_md.machine_kexec(image);
-	else
-		default_machine_kexec(image);
+	default_machine_kexec(image);
 
 	__ftrace_enabled_restore(save_ftrace_enabled);
 

trunk/arch/powerpc/kernel/process.c

@@ -353,15 +353,13 @@ static void switch_booke_debug_regs(struct thread_struct *new_thread)
 			prime_debug_regs(new_thread);
 }
 #else	/* !CONFIG_PPC_ADV_DEBUG_REGS */
-#ifndef CONFIG_HAVE_HW_BREAKPOINT
 static void set_debug_reg_defaults(struct thread_struct *thread)
 {
 	if (thread->dabr) {
 		thread->dabr = 0;
 		set_dabr(0);
 	}
 }
-#endif /* !CONFIG_HAVE_HW_BREAKPOINT */
 #endif	/* CONFIG_PPC_ADV_DEBUG_REGS */
 
 int set_dabr(unsigned long dabr)
@@ -672,11 +670,11 @@ void flush_thread(void)
 {
 	discard_lazy_cpu_state();
 
-#ifdef CONFIG_HAVE_HW_BREAKPOINT
+#ifdef CONFIG_HAVE_HW_BREAKPOINTS
 	flush_ptrace_hw_breakpoint(current);
-#else /* CONFIG_HAVE_HW_BREAKPOINT */
+#else /* CONFIG_HAVE_HW_BREAKPOINTS */
 	set_debug_reg_defaults(&current->thread);
-#endif /* CONFIG_HAVE_HW_BREAKPOINT */
+#endif /* CONFIG_HAVE_HW_BREAKPOINTS */
 }
 
 void

trunk/arch/powerpc/mm/tlb_hash64.c

@@ -38,11 +38,13 @@ DEFINE_PER_CPU(struct ppc64_tlb_batch, ppc64_tlb_batch);
  * neesd to be flushed. This function will either perform the flush
  * immediately or will batch it up if the current CPU has an active
  * batch on it.
+ *
+ * Must be called from within some kind of spinlock/non-preempt region...
  */
 void hpte_need_flush(struct mm_struct *mm, unsigned long addr,
 		     pte_t *ptep, unsigned long pte, int huge)
 {
-	struct ppc64_tlb_batch *batch = &get_cpu_var(ppc64_tlb_batch);
+	struct ppc64_tlb_batch *batch = &__get_cpu_var(ppc64_tlb_batch);
 	unsigned long vsid, vaddr;
 	unsigned int psize;
 	int ssize;
@@ -97,7 +99,6 @@ void hpte_need_flush(struct mm_struct *mm, unsigned long addr,
 	 */
 	if (!batch->active) {
 		flush_hash_page(vaddr, rpte, psize, ssize, 0);
-		put_cpu_var(ppc64_tlb_batch);
 		return;
 	}
 
@@ -126,7 +127,6 @@ void hpte_need_flush(struct mm_struct *mm, unsigned long addr,
 	batch->index = ++i;
 	if (i >= PPC64_TLB_BATCH_NR)
 		__flush_tlb_pending(batch);
-	put_cpu_var(ppc64_tlb_batch);
 }
 
 /*

trunk/arch/x86/include/asm/msr-index.h

@@ -36,11 +36,6 @@
 #define MSR_IA32_PERFCTR1		0x000000c2
 #define MSR_FSB_FREQ			0x000000cd
 
-#define MSR_NHM_SNB_PKG_CST_CFG_CTL	0x000000e2
-#define NHM_C3_AUTO_DEMOTE		(1UL << 25)
-#define NHM_C1_AUTO_DEMOTE		(1UL << 26)
-#define ATM_LNC_C6_AUTO_DEMOTE		(1UL << 25)
-
 #define MSR_MTRRcap			0x000000fe
 #define MSR_IA32_BBL_CR_CTL		0x00000119
 

trunk/arch/x86/kernel/cpu/cpufreq/powernow-k8.c

@@ -1537,6 +1537,7 @@ static struct notifier_block cpb_nb = {
 static int __cpuinit powernowk8_init(void)
 {
 	unsigned int i, supported_cpus = 0, cpu;
+	int rv;
 
 	for_each_online_cpu(i) {
 		int rc;
@@ -1574,7 +1575,13 @@ static int __cpuinit powernowk8_init(void)
 			(cpb_enabled ? "on" : "off"));
 	}
 
-	return cpufreq_register_driver(&cpufreq_amd64_driver);
+	rv = cpufreq_register_driver(&cpufreq_amd64_driver);
+	if (rv < 0 && boot_cpu_has(X86_FEATURE_CPB)) {
+		unregister_cpu_notifier(&cpb_nb);
+		msrs_free(msrs);
+		msrs = NULL;
+	}
+	return rv;
 }
 
 /* driver entry point for term */

trunk/drivers/acpi/acpica/aclocal.h

@@ -416,15 +416,10 @@ struct acpi_gpe_handler_info {
 	u8 originally_enabled;  /* True if GPE was originally enabled */
 };
 
-struct acpi_gpe_notify_object {
-	struct acpi_namespace_node *node;
-	struct acpi_gpe_notify_object *next;
-};
-
 union acpi_gpe_dispatch_info {
 	struct acpi_namespace_node *method_node;	/* Method node for this GPE level */
 	struct acpi_gpe_handler_info *handler;  /* Installed GPE handler */
-	struct acpi_gpe_notify_object device;   /* List of _PRW devices for implicit notify */
+	struct acpi_namespace_node *device_node;        /* Parent _PRW device for implicit notify */
 };
 
 /*

trunk/drivers/acpi/acpica/evgpe.c

@@ -457,7 +457,6 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
 	acpi_status status;
 	struct acpi_gpe_event_info *local_gpe_event_info;
 	struct acpi_evaluate_info *info;
-	struct acpi_gpe_notify_object *notify_object;
 
 	ACPI_FUNCTION_TRACE(ev_asynch_execute_gpe_method);
 
@@ -509,18 +508,10 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
 		 * from this thread -- because handlers may in turn run other
 		 * control methods.
 		 */
-		status = acpi_ev_queue_notify_request(
-				local_gpe_event_info->dispatch.device.node,
-				ACPI_NOTIFY_DEVICE_WAKE);
-
-		notify_object = local_gpe_event_info->dispatch.device.next;
-		while (ACPI_SUCCESS(status) && notify_object) {
-			status = acpi_ev_queue_notify_request(
-					notify_object->node,
-					ACPI_NOTIFY_DEVICE_WAKE);
-			notify_object = notify_object->next;
-		}
-
+		status =
+		    acpi_ev_queue_notify_request(local_gpe_event_info->dispatch.
+						 device_node,
+						 ACPI_NOTIFY_DEVICE_WAKE);
 		break;
 
 	case ACPI_GPE_DISPATCH_METHOD:

trunk/drivers/acpi/acpica/evxfgpe.c

@@ -198,9 +198,7 @@ acpi_setup_gpe_for_wake(acpi_handle wake_device,
 	acpi_status status = AE_BAD_PARAMETER;
 	struct acpi_gpe_event_info *gpe_event_info;
 	struct acpi_namespace_node *device_node;
-	struct acpi_gpe_notify_object *notify_object;
 	acpi_cpu_flags flags;
-	u8 gpe_dispatch_mask;
 
 	ACPI_FUNCTION_TRACE(acpi_setup_gpe_for_wake);
 
@@ -223,49 +221,27 @@ acpi_setup_gpe_for_wake(acpi_handle wake_device,
 		goto unlock_and_exit;
 	}
 
-	if (wake_device == ACPI_ROOT_OBJECT) {
-		goto out;
-	}
-
 	/*
 	 * If there is no method or handler for this GPE, then the
 	 * wake_device will be notified whenever this GPE fires (aka
 	 * "implicit notify") Note: The GPE is assumed to be
 	 * level-triggered (for windows compatibility).
 	 */
-	gpe_dispatch_mask = gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK;
-	if (gpe_dispatch_mask != ACPI_GPE_DISPATCH_NONE
-	    && gpe_dispatch_mask != ACPI_GPE_DISPATCH_NOTIFY) {
-		goto out;
-	}
+	if (((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) ==
+	      ACPI_GPE_DISPATCH_NONE) && (wake_device != ACPI_ROOT_OBJECT)) {
 
-	/* Validate wake_device is of type Device */
+		/* Validate wake_device is of type Device */
 
-	device_node = ACPI_CAST_PTR(struct acpi_namespace_node, wake_device);
-	if (device_node->type != ACPI_TYPE_DEVICE) {
-		goto unlock_and_exit;
-	}
-
-	if (gpe_dispatch_mask == ACPI_GPE_DISPATCH_NONE) {
-		gpe_event_info->flags = (ACPI_GPE_DISPATCH_NOTIFY |
-					 ACPI_GPE_LEVEL_TRIGGERED);
-		gpe_event_info->dispatch.device.node = device_node;
-		gpe_event_info->dispatch.device.next = NULL;
-	} else {
-		/* There are multiple devices to notify implicitly. */
-
-		notify_object = ACPI_ALLOCATE_ZEROED(sizeof(*notify_object));
-		if (!notify_object) {
-			status = AE_NO_MEMORY;
+		device_node = ACPI_CAST_PTR(struct acpi_namespace_node,
+					    wake_device);
+		if (device_node->type != ACPI_TYPE_DEVICE) {
 			goto unlock_and_exit;
 		}
-
-		notify_object->node = device_node;
-		notify_object->next = gpe_event_info->dispatch.device.next;
-		gpe_event_info->dispatch.device.next = notify_object;
+		gpe_event_info->flags = (ACPI_GPE_DISPATCH_NOTIFY |
+					 ACPI_GPE_LEVEL_TRIGGERED);
+		gpe_event_info->dispatch.device_node = device_node;
 	}
 
- out:
 	gpe_event_info->flags |= ACPI_GPE_CAN_WAKE;
 	status = AE_OK;
 

trunk/drivers/acpi/debugfs.c

@@ -26,9 +26,7 @@ static ssize_t cm_write(struct file *file, const char __user * user_buf,
 			size_t count, loff_t *ppos)
 {
 	static char *buf;
-	static u32 max_size;
-	static u32 uncopied_bytes;
-
+	static int uncopied_bytes;
 	struct acpi_table_header table;
 	acpi_status status;
 
@@ -39,24 +37,19 @@ static ssize_t cm_write(struct file *file, const char __user * user_buf,
 		if (copy_from_user(&table, user_buf,
 				   sizeof(struct acpi_table_header)))
 			return -EFAULT;
-		uncopied_bytes = max_size = table.length;
-		buf = kzalloc(max_size, GFP_KERNEL);
+		uncopied_bytes = table.length;
+		buf = kzalloc(uncopied_bytes, GFP_KERNEL);
 		if (!buf)
 			return -ENOMEM;
 	}
 
-	if (buf == NULL)
-		return -EINVAL;
-
-	if ((*ppos > max_size) ||
-	    (*ppos + count > max_size) ||
-	    (*ppos + count < count) ||
-	    (count > uncopied_bytes))
+	if (uncopied_bytes < count) {
+		kfree(buf);
 		return -EINVAL;
+	}
 
 	if (copy_from_user(buf + (*ppos), user_buf, count)) {
 		kfree(buf);
-		buf = NULL;
 		return -EFAULT;
 	}
 
@@ -66,7 +59,6 @@ static ssize_t cm_write(struct file *file, const char __user * user_buf,
 	if (!uncopied_bytes) {
 		status = acpi_install_method(buf);
 		kfree(buf);
-		buf = NULL;
 		if (ACPI_FAILURE(status))
 			return -EINVAL;
 		add_taint(TAINT_OVERRIDDEN_ACPI_TABLE);

trunk/drivers/idle/intel_idle.c

@@ -62,7 +62,6 @@
 #include <linux/notifier.h>
 #include <linux/cpu.h>
 #include <asm/mwait.h>
-#include <asm/msr.h>
 
 #define INTEL_IDLE_VERSION "0.4"
 #define PREFIX "intel_idle: "
@@ -85,12 +84,6 @@ static int intel_idle(struct cpuidle_device *dev, struct cpuidle_state *state);
 
 static struct cpuidle_state *cpuidle_state_table;
 
-/*
- * Hardware C-state auto-demotion may not always be optimal.
- * Indicate which enable bits to clear here.
- */
-static unsigned long long auto_demotion_disable_flags;
-
 /*
  * Set this flag for states where the HW flushes the TLB for us
  * and so we don't need cross-calls to keep it consistent.
@@ -288,15 +281,6 @@ static struct notifier_block setup_broadcast_notifier = {
 	.notifier_call = setup_broadcast_cpuhp_notify,
 };
 
-static void auto_demotion_disable(void *dummy)
-{
-	unsigned long long msr_bits;
-
-	rdmsrl(MSR_NHM_SNB_PKG_CST_CFG_CTL, msr_bits);
-	msr_bits &= ~auto_demotion_disable_flags;
-	wrmsrl(MSR_NHM_SNB_PKG_CST_CFG_CTL, msr_bits);
-}
-
 /*
  * intel_idle_probe()
  */
@@ -340,17 +324,11 @@ static int intel_idle_probe(void)
 	case 0x25:	/* Westmere */
 	case 0x2C:	/* Westmere */
 		cpuidle_state_table = nehalem_cstates;
-		auto_demotion_disable_flags =
-			(NHM_C1_AUTO_DEMOTE | NHM_C3_AUTO_DEMOTE);
 		break;
 
 	case 0x1C:	/* 28 - Atom Processor */
-		cpuidle_state_table = atom_cstates;
-		break;
-
 	case 0x26:	/* 38 - Lincroft Atom Processor */
 		cpuidle_state_table = atom_cstates;
-		auto_demotion_disable_flags = ATM_LNC_C6_AUTO_DEMOTE;
 		break;
 
 	case 0x2A:	/* SNB */
@@ -458,8 +436,6 @@ static int intel_idle_cpuidle_devices_init(void)
 			return -EIO;
 		}
 	}
-	if (auto_demotion_disable_flags)
-		smp_call_function(auto_demotion_disable, NULL, 1);
 
 	return 0;
 }