Merge branch 'linus' into tracing-v28-for-linus-v3

Conflicts:
	init/main.c
	kernel/module.c
	scripts/bootgraph.pl

13 files changed, 91 insertions, 42 deletions

diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 34e4d112b1e..a8fd9ebdc8e 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -295,7 +295,7 @@ static int iommu_flush_pages(struct amd_iommu *iommu, u16 domid,
 		u64 address, size_t size)
 {
 	int s = 0;
-	unsigned pages = iommu_num_pages(address, size);
+	unsigned pages = iommu_num_pages(address, size, PAGE_SIZE);
 
 	address &= PAGE_MASK;
 
@@ -680,7 +680,8 @@ static struct dma_ops_domain *dma_ops_domain_alloc(struct amd_iommu *iommu,
 	    iommu->exclusion_start < dma_dom->aperture_size) {
 		unsigned long startpage = iommu->exclusion_start >> PAGE_SHIFT;
 		int pages = iommu_num_pages(iommu->exclusion_start,
-					    iommu->exclusion_length);
+					    iommu->exclusion_length,
+					    PAGE_SIZE);
 		dma_ops_reserve_addresses(dma_dom, startpage, pages);
 	}
 
@@ -935,7 +936,7 @@ static dma_addr_t __map_single(struct device *dev,
 	unsigned long align_mask = 0;
 	int i;
 
-	pages = iommu_num_pages(paddr, size);
+	pages = iommu_num_pages(paddr, size, PAGE_SIZE);
 	paddr &= PAGE_MASK;
 
 	if (align)
@@ -980,7 +981,7 @@ static void __unmap_single(struct amd_iommu *iommu,
 	if ((dma_addr == 0) || (dma_addr + size > dma_dom->aperture_size))
 		return;
 
-	pages = iommu_num_pages(dma_addr, size);
+	pages = iommu_num_pages(dma_addr, size, PAGE_SIZE);
 	dma_addr &= PAGE_MASK;
 	start = dma_addr;
 
diff --git a/arch/x86/kernel/cpuid.c b/arch/x86/kernel/cpuid.c
index 6a44d646599..72cefd1e649 100644
--- a/arch/x86/kernel/cpuid.c
+++ b/arch/x86/kernel/cpuid.c
@@ -147,8 +147,8 @@ static __cpuinit int cpuid_device_create(int cpu)
 {
 	struct device *dev;
 
-	dev = device_create_drvdata(cpuid_class, NULL, MKDEV(CPUID_MAJOR, cpu),
-				    NULL, "cpu%d", cpu);
+	dev = device_create(cpuid_class, NULL, MKDEV(CPUID_MAJOR, cpu), NULL,
+			    "cpu%d", cpu);
 	return IS_ERR(dev) ? PTR_ERR(dev) : 0;
 }
 
diff --git a/arch/x86/kernel/dumpstack_32.c b/arch/x86/kernel/dumpstack_32.c
index 201ee359a1a..1a78180f08d 100644
--- a/arch/x86/kernel/dumpstack_32.c
+++ b/arch/x86/kernel/dumpstack_32.c
@@ -13,6 +13,7 @@
 #include <linux/kexec.h>
 #include <linux/bug.h>
 #include <linux/nmi.h>
+#include <linux/sysfs.h>
 
 #include <asm/stacktrace.h>
 
@@ -343,6 +344,7 @@ int __kprobes __die(const char *str, struct pt_regs *regs, long err)
 	printk("DEBUG_PAGEALLOC");
 #endif
 	printk("\n");
+	sysfs_printk_last_file();
 	if (notify_die(DIE_OOPS, str, regs, err,
 			current->thread.trap_no, SIGSEGV) == NOTIFY_STOP)
 		return 1;
diff --git a/arch/x86/kernel/dumpstack_64.c b/arch/x86/kernel/dumpstack_64.c
index 086cc8118e3..96a5db7da8a 100644
--- a/arch/x86/kernel/dumpstack_64.c
+++ b/arch/x86/kernel/dumpstack_64.c
@@ -13,6 +13,7 @@
 #include <linux/kexec.h>
 #include <linux/bug.h>
 #include <linux/nmi.h>
+#include <linux/sysfs.h>
 
 #include <asm/stacktrace.h>
 
@@ -489,6 +490,7 @@ int __kprobes __die(const char *str, struct pt_regs *regs, long err)
 	printk("DEBUG_PAGEALLOC");
 #endif
 	printk("\n");
+	sysfs_printk_last_file();
 	if (notify_die(DIE_OOPS, str, regs, err,
 			current->thread.trap_no, SIGSEGV) == NOTIFY_STOP)
 		return 1;
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 78e642feac3..ce97bf3bed1 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -1282,12 +1282,10 @@ void __init e820_reserve_resources(void)
 	e820_res = res;
 	for (i = 0; i < e820.nr_map; i++) {
 		end = e820.map[i].addr + e820.map[i].size - 1;
-#ifndef CONFIG_RESOURCES_64BIT
-		if (end > 0x100000000ULL) {
+		if (end != (resource_size_t)end) {
 			res++;
 			continue;
 		}
-#endif
 		res->name = e820_type_to_string(e820.map[i].type);
 		res->start = e820.map[i].addr;
 		res->end = end;
diff --git a/arch/x86/kernel/kvmclock.c b/arch/x86/kernel/kvmclock.c
index d02def06ca9..774ac499156 100644
--- a/arch/x86/kernel/kvmclock.c
+++ b/arch/x86/kernel/kvmclock.c
@@ -78,6 +78,34 @@ static cycle_t kvm_clock_read(void)
 	return ret;
 }
 
+/*
+ * If we don't do that, there is the possibility that the guest
+ * will calibrate under heavy load - thus, getting a lower lpj -
+ * and execute the delays themselves without load. This is wrong,
+ * because no delay loop can finish beforehand.
+ * Any heuristics is subject to fail, because ultimately, a large
+ * poll of guests can be running and trouble each other. So we preset
+ * lpj here
+ */
+static unsigned long kvm_get_tsc_khz(void)
+{
+	return preset_lpj;
+}
+
+static void kvm_get_preset_lpj(void)
+{
+	struct pvclock_vcpu_time_info *src;
+	unsigned long khz;
+	u64 lpj;
+
+	src = &per_cpu(hv_clock, 0);
+	khz = pvclock_tsc_khz(src);
+
+	lpj = ((u64)khz * 1000);
+	do_div(lpj, HZ);
+	preset_lpj = lpj;
+}
+
 static struct clocksource kvm_clock = {
 	.name = "kvm-clock",
 	.read = kvm_clock_read,
@@ -153,6 +181,7 @@ void __init kvmclock_init(void)
 		pv_time_ops.get_wallclock = kvm_get_wallclock;
 		pv_time_ops.set_wallclock = kvm_set_wallclock;
 		pv_time_ops.sched_clock = kvm_clock_read;
+		pv_time_ops.get_tsc_khz = kvm_get_tsc_khz;
 #ifdef CONFIG_X86_LOCAL_APIC
 		pv_apic_ops.setup_secondary_clock = kvm_setup_secondary_clock;
 #endif
@@ -163,6 +192,7 @@ void __init kvmclock_init(void)
 #ifdef CONFIG_KEXEC
 		machine_ops.crash_shutdown  = kvm_crash_shutdown;
 #endif
+		kvm_get_preset_lpj();
 		clocksource_register(&kvm_clock);
 	}
 }
diff --git a/arch/x86/kernel/msr.c b/arch/x86/kernel/msr.c
index 2e2af5d1819..82a7c7ed6d4 100644
--- a/arch/x86/kernel/msr.c
+++ b/arch/x86/kernel/msr.c
@@ -163,8 +163,8 @@ static int __cpuinit msr_device_create(int cpu)
 {
 	struct device *dev;
 
-	dev = device_create_drvdata(msr_class, NULL, MKDEV(MSR_MAJOR, cpu),
-				    NULL, "msr%d", cpu);
+	dev = device_create(msr_class, NULL, MKDEV(MSR_MAJOR, cpu), NULL,
+			    "msr%d", cpu);
 	return IS_ERR(dev) ? PTR_ERR(dev) : 0;
 }
 
diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c
index 080d1d27f37..e1e731d78f3 100644
--- a/arch/x86/kernel/pci-calgary_64.c
+++ b/arch/x86/kernel/pci-calgary_64.c
@@ -217,16 +217,6 @@ static inline unsigned long verify_bit_range(unsigned long* bitmap,
 
 #endif /* CONFIG_IOMMU_DEBUG */
 
-static inline unsigned int num_dma_pages(unsigned long dma, unsigned int dmalen)
-{
-	unsigned int npages;
-
-	npages = PAGE_ALIGN(dma + dmalen) - (dma & PAGE_MASK);
-	npages >>= PAGE_SHIFT;
-
-	return npages;
-}
-
 static inline int translation_enabled(struct iommu_table *tbl)
 {
 	/* only PHBs with translation enabled have an IOMMU table */
@@ -408,7 +398,7 @@ static void calgary_unmap_sg(struct device *dev,
 		if (dmalen == 0)
 			break;
 
-		npages = num_dma_pages(dma, dmalen);
+		npages = iommu_num_pages(dma, dmalen, PAGE_SIZE);
 		iommu_free(tbl, dma, npages);
 	}
 }
@@ -427,7 +417,7 @@ static int calgary_map_sg(struct device *dev, struct scatterlist *sg,
 		BUG_ON(!sg_page(s));
 
 		vaddr = (unsigned long) sg_virt(s);
-		npages = num_dma_pages(vaddr, s->length);
+		npages = iommu_num_pages(vaddr, s->length, PAGE_SIZE);
 
 		entry = iommu_range_alloc(dev, tbl, npages);
 		if (entry == bad_dma_address) {
@@ -464,7 +454,7 @@ static dma_addr_t calgary_map_single(struct device *dev, phys_addr_t paddr,
 	struct iommu_table *tbl = find_iommu_table(dev);
 
 	uaddr = (unsigned long)vaddr;
-	npages = num_dma_pages(uaddr, size);
+	npages = iommu_num_pages(uaddr, size, PAGE_SIZE);
 
 	return iommu_alloc(dev, tbl, vaddr, npages, direction);
 }
@@ -475,7 +465,7 @@ static void calgary_unmap_single(struct device *dev, dma_addr_t dma_handle,
 	struct iommu_table *tbl = find_iommu_table(dev);
 	unsigned int npages;
 
-	npages = num_dma_pages(dma_handle, size);
+	npages = iommu_num_pages(dma_handle, size, PAGE_SIZE);
 	iommu_free(tbl, dma_handle, npages);
 }
 
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index 0a3824e837b..19262482021 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -125,13 +125,13 @@ void __init pci_iommu_alloc(void)
 	pci_swiotlb_init();
 }
 
-unsigned long iommu_num_pages(unsigned long addr, unsigned long len)
+unsigned long iommu_nr_pages(unsigned long addr, unsigned long len)
 {
 	unsigned long size = roundup((addr & ~PAGE_MASK) + len, PAGE_SIZE);
 
 	return size >> PAGE_SHIFT;
 }
-EXPORT_SYMBOL(iommu_num_pages);
+EXPORT_SYMBOL(iommu_nr_pages);
 #endif
 
 void *dma_generic_alloc_coherent(struct device *dev, size_t size,
diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index 145f1c83369..e3f75bbcede 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -231,7 +231,7 @@ nonforced_iommu(struct device *dev, unsigned long addr, size_t size)
 static dma_addr_t dma_map_area(struct device *dev, dma_addr_t phys_mem,
 				size_t size, int dir, unsigned long align_mask)
 {
-	unsigned long npages = iommu_num_pages(phys_mem, size);
+	unsigned long npages = iommu_num_pages(phys_mem, size, PAGE_SIZE);
 	unsigned long iommu_page = alloc_iommu(dev, npages, align_mask);
 	int i;
 
@@ -285,7 +285,7 @@ static void gart_unmap_single(struct device *dev, dma_addr_t dma_addr,
 		return;
 
 	iommu_page = (dma_addr - iommu_bus_base)>>PAGE_SHIFT;
-	npages = iommu_num_pages(dma_addr, size);
+	npages = iommu_num_pages(dma_addr, size, PAGE_SIZE);
 	for (i = 0; i < npages; i++) {
 		iommu_gatt_base[iommu_page + i] = gart_unmapped_entry;
 		CLEAR_LEAK(iommu_page + i);
@@ -368,7 +368,7 @@ static int __dma_map_cont(struct device *dev, struct scatterlist *start,
 		}
 
 		addr = phys_addr;
-		pages = iommu_num_pages(s->offset, s->length);
+		pages = iommu_num_pages(s->offset, s->length, PAGE_SIZE);
 		while (pages--) {
 			iommu_gatt_base[iommu_page] = GPTE_ENCODE(addr);
 			SET_LEAK(iommu_page);
@@ -451,7 +451,7 @@ gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, int dir)
 
 		seg_size += s->length;
 		need = nextneed;
-		pages += iommu_num_pages(s->offset, s->length);
+		pages += iommu_num_pages(s->offset, s->length, PAGE_SIZE);
 		ps = s;
 	}
 	if (dma_map_cont(dev, start_sg, i - start, sgmap, pages, need) < 0)
diff --git a/arch/x86/kernel/pvclock.c b/arch/x86/kernel/pvclock.c
index 05fbe9a0325..4f9c55f3a7c 100644
--- a/arch/x86/kernel/pvclock.c
+++ b/arch/x86/kernel/pvclock.c
@@ -97,6 +97,18 @@ static unsigned pvclock_get_time_values(struct pvclock_shadow_time *dst,
 	return dst->version;
 }
 
+unsigned long pvclock_tsc_khz(struct pvclock_vcpu_time_info *src)
+{
+	u64 pv_tsc_khz = 1000000ULL << 32;
+
+	do_div(pv_tsc_khz, src->tsc_to_system_mul);
+	if (src->tsc_shift < 0)
+		pv_tsc_khz <<= -src->tsc_shift;
+	else
+		pv_tsc_khz >>= src->tsc_shift;
+	return pv_tsc_khz;
+}
+
 cycle_t pvclock_clocksource_read(struct pvclock_vcpu_time_info *src)
 {
 	struct pvclock_shadow_time shadow;
diff --git a/arch/x86/kernel/rtc.c b/arch/x86/kernel/rtc.c
index 05191bbc68b..0a23b5795b2 100644
--- a/arch/x86/kernel/rtc.c
+++ b/arch/x86/kernel/rtc.c
@@ -223,11 +223,25 @@ static struct platform_device rtc_device = {
 static __init int add_rtc_cmos(void)
 {
 #ifdef CONFIG_PNP
-	if (!pnp_platform_devices)
-		platform_device_register(&rtc_device);
-#else
+	static const char *ids[] __initconst =
+	    { "PNP0b00", "PNP0b01", "PNP0b02", };
+	struct pnp_dev *dev;
+	struct pnp_id *id;
+	int i;
+
+	pnp_for_each_dev(dev) {
+		for (id = dev->id; id; id = id->next) {
+			for (i = 0; i < ARRAY_SIZE(ids); i++) {
+				if (compare_pnp_id(id, ids[i]) != 0)
+					return 0;
+			}
+		}
+	}
+#endif
+
 	platform_device_register(&rtc_device);
-#endif /* CONFIG_PNP */
+	dev_info(&rtc_device.dev,
+		 "registered platform RTC device (no PNP device found)\n");
 	return 0;
 }
 device_initcall(add_rtc_cmos);
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 8c3aca7cb34..7ed9e070a6e 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -282,6 +282,8 @@ static void __cpuinit smp_callin(void)
 	cpu_set(cpuid, cpu_callin_map);
 }
 
+static int __cpuinitdata unsafe_smp;
+
 /*
  * Activate a secondary processor.
  */
@@ -397,7 +399,7 @@ static void __cpuinit smp_apply_quirks(struct cpuinfo_x86 *c)
 				goto valid_k7;
 
 		/* If we get here, not a certified SMP capable AMD system. */
-		add_taint(TAINT_UNSAFE_SMP);
+		unsafe_smp = 1;
 	}
 
 valid_k7:
@@ -414,12 +416,10 @@ static void __cpuinit smp_checks(void)
 	 * Don't taint if we are running SMP kernel on a single non-MP
 	 * approved Athlon
 	 */
-	if (tainted & TAINT_UNSAFE_SMP) {
-		if (num_online_cpus())
-			printk(KERN_INFO "WARNING: This combination of AMD"
-				"processors is not suitable for SMP.\n");
-		else
-			tainted &= ~TAINT_UNSAFE_SMP;
+	if (unsafe_smp && num_online_cpus() > 1) {
+		printk(KERN_INFO "WARNING: This combination of AMD"
+			"processors is not suitable for SMP.\n");
+		add_taint(TAINT_UNSAFE_SMP);
 	}
 }