Merge branch 'perf/urgent' into perf/core

Merge reason: We are going to queue up a dependent patch.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

14 files changed, 58 insertions, 36 deletions

diff --git a/arch/mips/alchemy/common/time.c b/arch/mips/alchemy/common/time.c
index 7da4d0081487..a7193ae13a5d 100644
--- a/arch/mips/alchemy/common/time.c
+++ b/arch/mips/alchemy/common/time.c
@@ -146,7 +146,7 @@ static int __init alchemy_time_init(unsigned int m2int)
 	cd->shift = 32;
 	cd->mult = div_sc(32768, NSEC_PER_SEC, cd->shift);
 	cd->max_delta_ns = clockevent_delta2ns(0xffffffff, cd);
-	cd->min_delta_ns = clockevent_delta2ns(8, cd);	/* ~0.25ms */
+	cd->min_delta_ns = clockevent_delta2ns(9, cd);	/* ~0.28ms */
 	clockevents_register_device(cd);
 	setup_irq(m2int, &au1x_rtcmatch2_irqaction);
 
diff --git a/arch/mips/ath79/dev-wmac.c b/arch/mips/ath79/dev-wmac.c
index 24f546985b69..e21507052066 100644
--- a/arch/mips/ath79/dev-wmac.c
+++ b/arch/mips/ath79/dev-wmac.c
@@ -96,7 +96,7 @@ void __init ath79_register_wmac(u8 *cal_data)
 {
 	if (soc_is_ar913x())
 		ar913x_wmac_setup();
-	if (soc_is_ar933x())
+	else if (soc_is_ar933x())
 		ar933x_wmac_setup();
 	else
 		BUG();
diff --git a/arch/mips/configs/nlm_xlp_defconfig b/arch/mips/configs/nlm_xlp_defconfig
index 4479fd669ac1..28c6b276c216 100644
--- a/arch/mips/configs/nlm_xlp_defconfig
+++ b/arch/mips/configs/nlm_xlp_defconfig
@@ -8,7 +8,7 @@ CONFIG_HIGH_RES_TIMERS=y
 # CONFIG_SECCOMP is not set
 CONFIG_USE_OF=y
 CONFIG_EXPERIMENTAL=y
-CONFIG_CROSS_COMPILE="mips-linux-gnu-"
+CONFIG_CROSS_COMPILE=""
 # CONFIG_LOCALVERSION_AUTO is not set
 CONFIG_SYSVIPC=y
 CONFIG_POSIX_MQUEUE=y
@@ -22,7 +22,7 @@ CONFIG_AUDIT=y
 CONFIG_CGROUPS=y
 CONFIG_NAMESPACES=y
 CONFIG_BLK_DEV_INITRD=y
-CONFIG_INITRAMFS_SOURCE="usr/dev_file_list usr/rootfs.xlp"
+CONFIG_INITRAMFS_SOURCE=""
 CONFIG_RD_BZIP2=y
 CONFIG_RD_LZMA=y
 CONFIG_INITRAMFS_COMPRESSION_LZMA=y
diff --git a/arch/mips/configs/nlm_xlr_defconfig b/arch/mips/configs/nlm_xlr_defconfig
index 7c68666fdd64..d0b857d98c91 100644
--- a/arch/mips/configs/nlm_xlr_defconfig
+++ b/arch/mips/configs/nlm_xlr_defconfig
@@ -8,7 +8,7 @@ CONFIG_HIGH_RES_TIMERS=y
 CONFIG_PREEMPT_VOLUNTARY=y
 CONFIG_KEXEC=y
 CONFIG_EXPERIMENTAL=y
-CONFIG_CROSS_COMPILE="mips-linux-gnu-"
+CONFIG_CROSS_COMPILE=""
 # CONFIG_LOCALVERSION_AUTO is not set
 CONFIG_SYSVIPC=y
 CONFIG_POSIX_MQUEUE=y
@@ -22,7 +22,7 @@ CONFIG_AUDIT=y
 CONFIG_NAMESPACES=y
 CONFIG_SCHED_AUTOGROUP=y
 CONFIG_BLK_DEV_INITRD=y
-CONFIG_INITRAMFS_SOURCE="usr/dev_file_list usr/rootfs.xlr"
+CONFIG_INITRAMFS_SOURCE=""
 CONFIG_RD_BZIP2=y
 CONFIG_RD_LZMA=y
 CONFIG_INITRAMFS_COMPRESSION_GZIP=y
diff --git a/arch/mips/configs/powertv_defconfig b/arch/mips/configs/powertv_defconfig
index 3b0b6e8c8533..7fda0ce5f692 100644
--- a/arch/mips/configs/powertv_defconfig
+++ b/arch/mips/configs/powertv_defconfig
@@ -6,7 +6,7 @@ CONFIG_HZ_1000=y
 CONFIG_PREEMPT=y
 # CONFIG_SECCOMP is not set
 CONFIG_EXPERIMENTAL=y
-CONFIG_CROSS_COMPILE="mips-linux-"
+CONFIG_CROSS_COMPILE=""
 # CONFIG_SWAP is not set
 CONFIG_SYSVIPC=y
 CONFIG_LOG_BUF_SHIFT=16
diff --git a/arch/mips/include/asm/mach-au1x00/gpio-au1300.h b/arch/mips/include/asm/mach-au1x00/gpio-au1300.h
index 556e1be20bf6..fb9975c74c57 100644
--- a/arch/mips/include/asm/mach-au1x00/gpio-au1300.h
+++ b/arch/mips/include/asm/mach-au1x00/gpio-au1300.h
@@ -11,6 +11,9 @@
 #include <asm/io.h>
 #include <asm/mach-au1x00/au1000.h>
 
+struct gpio;
+struct gpio_chip;
+
 /* with the current GPIC design, up to 128 GPIOs are possible.
  * The only implementation so far is in the Au1300, which has 75 externally
  * available GPIOs.
@@ -203,7 +206,22 @@ static inline int gpio_request(unsigned int gpio, const char *label)
 	return 0;
 }
 
-static inline void gpio_free(unsigned int gpio)
+static inline int gpio_request_one(unsigned gpio,
+					unsigned long flags, const char *label)
+{
+	return 0;
+}
+
+static inline int gpio_request_array(struct gpio *array, size_t num)
+{
+	return 0;
+}
+
+static inline void gpio_free(unsigned gpio)
+{
+}
+
+static inline void gpio_free_array(struct gpio *array, size_t num)
 {
 }
 
diff --git a/arch/mips/include/asm/page.h b/arch/mips/include/asm/page.h
index d41790928c64..da9bd7d270d1 100644
--- a/arch/mips/include/asm/page.h
+++ b/arch/mips/include/asm/page.h
@@ -39,9 +39,6 @@
 #define HPAGE_MASK	(~(HPAGE_SIZE - 1))
 #define HUGETLB_PAGE_ORDER	(HPAGE_SHIFT - PAGE_SHIFT)
 #else /* !CONFIG_HUGETLB_PAGE */
-# ifndef BUILD_BUG
-#  define BUILD_BUG() do { extern void __build_bug(void); __build_bug(); } while (0)
-# endif
 #define HPAGE_SHIFT	({BUILD_BUG(); 0; })
 #define HPAGE_SIZE	({BUILD_BUG(); 0; })
 #define HPAGE_MASK	({BUILD_BUG(); 0; })
diff --git a/arch/mips/kernel/smp-bmips.c b/arch/mips/kernel/smp-bmips.c
index 58fe71afd879..d5e950ab8527 100644
--- a/arch/mips/kernel/smp-bmips.c
+++ b/arch/mips/kernel/smp-bmips.c
@@ -8,7 +8,6 @@
  * SMP support for BMIPS
  */
 
-#include <linux/version.h>
 #include <linux/init.h>
 #include <linux/sched.h>
 #include <linux/mm.h>
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index cc4a3f120f54..d79ae5437b58 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -1135,7 +1135,7 @@ asmlinkage void do_mt(struct pt_regs *regs)
 		printk(KERN_DEBUG "YIELD Scheduler Exception\n");
 		break;
 	case 5:
-		printk(KERN_DEBUG "Gating Storage Schedulier Exception\n");
+		printk(KERN_DEBUG "Gating Storage Scheduler Exception\n");
 		break;
 	default:
 		printk(KERN_DEBUG "*** UNKNOWN THREAD EXCEPTION %d ***\n",
diff --git a/arch/mips/kernel/vmlinux.lds.S b/arch/mips/kernel/vmlinux.lds.S
index a81176f44c74..924da5eb7031 100644
--- a/arch/mips/kernel/vmlinux.lds.S
+++ b/arch/mips/kernel/vmlinux.lds.S
@@ -69,7 +69,6 @@ SECTIONS
 	RODATA
 
 	/* writeable */
-	_sdata = .;				/* Start of data section */
 	.data : {	/* Data */
 		. = . + DATAOFFSET;		/* for CONFIG_MAPPED_KERNEL */
 
diff --git a/arch/mips/mm/fault.c b/arch/mips/mm/fault.c
index 937cf3368164..69ebd586d7ff 100644
--- a/arch/mips/mm/fault.c
+++ b/arch/mips/mm/fault.c
@@ -42,6 +42,8 @@ asmlinkage void __kprobes do_page_fault(struct pt_regs *regs, unsigned long writ
 	const int field = sizeof(unsigned long) * 2;
 	siginfo_t info;
 	int fault;
+	unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE |
+						 (write ? FAULT_FLAG_WRITE : 0);
 
 #if 0
 	printk("Cpu%d[%s:%d:%0*lx:%ld:%0*lx]\n", raw_smp_processor_id(),
@@ -91,6 +93,7 @@ asmlinkage void __kprobes do_page_fault(struct pt_regs *regs, unsigned long writ
 	if (in_atomic() || !mm)
 		goto bad_area_nosemaphore;
 
+retry:
 	down_read(&mm->mmap_sem);
 	vma = find_vma(mm, address);
 	if (!vma)
@@ -144,7 +147,11 @@ good_area:
 	 * make sure we exit gracefully rather than endlessly redo
 	 * the fault.
 	 */
-	fault = handle_mm_fault(mm, vma, address, write ? FAULT_FLAG_WRITE : 0);
+	fault = handle_mm_fault(mm, vma, address, flags);
+
+	if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
+		return;
+
 	perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address);
 	if (unlikely(fault & VM_FAULT_ERROR)) {
 		if (fault & VM_FAULT_OOM)
@@ -153,12 +160,27 @@ good_area:
 			goto do_sigbus;
 		BUG();
 	}
-	if (fault & VM_FAULT_MAJOR) {
-		perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, regs, address);
-		tsk->maj_flt++;
-	} else {
-		perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, regs, address);
-		tsk->min_flt++;
+	if (flags & FAULT_FLAG_ALLOW_RETRY) {
+		if (fault & VM_FAULT_MAJOR) {
+			perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1,
+						  regs, address);
+			tsk->maj_flt++;
+		} else {
+			perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1,
+						  regs, address);
+			tsk->min_flt++;
+		}
+		if (fault & VM_FAULT_RETRY) {
+			flags &= ~FAULT_FLAG_ALLOW_RETRY;
+
+			/*
+			 * No need to up_read(&mm->mmap_sem) as we would
+			 * have already released it in __lock_page_or_retry
+			 * in mm/filemap.c.
+			 */
+
+			goto retry;
+		}
 	}
 
 	up_read(&mm->mmap_sem);
diff --git a/arch/mips/pci/pci.c b/arch/mips/pci/pci.c
index aec2b111d35b..15521505ebe8 100644
--- a/arch/mips/pci/pci.c
+++ b/arch/mips/pci/pci.c
@@ -279,7 +279,6 @@ void __devinit pcibios_fixup_bus(struct pci_bus *bus)
 {
 	/* Propagate hose info into the subordinate devices.  */
 
-	struct list_head *ln;
 	struct pci_dev *dev = bus->self;
 
 	if (pci_probe_only && dev &&
@@ -288,9 +287,7 @@ void __devinit pcibios_fixup_bus(struct pci_bus *bus)
 		pcibios_fixup_device_resources(dev, bus);
 	}
 
-	for (ln = bus->devices.next; ln != &bus->devices; ln = ln->next) {
-		dev = pci_dev_b(ln);
-
+	list_for_each_entry(dev, &bus->devices, bus_list) {
 		if ((dev->class >> 8) != PCI_CLASS_BRIDGE_PCI)
 			pcibios_fixup_device_resources(dev, bus);
 	}
diff --git a/arch/mips/pmc-sierra/yosemite/ht-irq.c b/arch/mips/pmc-sierra/yosemite/ht-irq.c
index 86b98e98fb4f..62ead6601c69 100644
--- a/arch/mips/pmc-sierra/yosemite/ht-irq.c
+++ b/arch/mips/pmc-sierra/yosemite/ht-irq.c
@@ -35,16 +35,6 @@
  */
 void __init titan_ht_pcibios_fixup_bus(struct pci_bus *bus)
 {
-	struct pci_bus *current_bus = bus;
-	struct pci_dev *devices;
-	struct list_head *devices_link;
-
-	list_for_each(devices_link, &(current_bus->devices)) {
-		devices = pci_dev_b(devices_link);
-		if (devices == NULL)
-			continue;
-	}
-
 	/*
 	 * PLX and SPKT related changes go here
 	 */
diff --git a/arch/mips/txx9/generic/7segled.c b/arch/mips/txx9/generic/7segled.c
index 8e93b2122524..4642f56e70e5 100644
--- a/arch/mips/txx9/generic/7segled.c
+++ b/arch/mips/txx9/generic/7segled.c
@@ -102,7 +102,7 @@ static int __init tx_7segled_init_sysfs(void)
 			break;
 		}
 		dev->id = i;
-		dev->dev = &tx_7segled_subsys;
+		dev->bus = &tx_7segled_subsys;
 		error = device_register(dev);
 		if (!error) {
 			device_create_file(dev, &dev_attr_ascii);