Merge branch 'linus' into sched/core

Merge reason: merge the latest fixes, update to -rc4.

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

16 files changed, 115 insertions, 11 deletions

diff --git a/arch/mips/include/asm/abi.h b/arch/mips/include/asm/abi.h
index 1dd74fbdc09..9252d9b50e5 100644
--- a/arch/mips/include/asm/abi.h
+++ b/arch/mips/include/asm/abi.h
@@ -13,12 +13,14 @@
 #include <asm/siginfo.h>
 
 struct mips_abi {
-	int (* const setup_frame)(struct k_sigaction * ka,
+	int (* const setup_frame)(void *sig_return, struct k_sigaction *ka,
 	                          struct pt_regs *regs, int signr,
 	                          sigset_t *set);
-	int (* const setup_rt_frame)(struct k_sigaction * ka,
+	const unsigned long	signal_return_offset;
+	int (* const setup_rt_frame)(void *sig_return, struct k_sigaction *ka,
 	                       struct pt_regs *regs, int signr,
 	                       sigset_t *set, siginfo_t *info);
+	const unsigned long	rt_signal_return_offset;
 	const unsigned long	restart;
 };
 
diff --git a/arch/mips/include/asm/elf.h b/arch/mips/include/asm/elf.h
index e53d7bed5cd..ea77a42c5f8 100644
--- a/arch/mips/include/asm/elf.h
+++ b/arch/mips/include/asm/elf.h
@@ -310,6 +310,7 @@ do {									\
 
 #endif /* CONFIG_64BIT */
 
+struct pt_regs;
 struct task_struct;
 
 extern void elf_dump_regs(elf_greg_t *, struct pt_regs *regs);
@@ -367,4 +368,8 @@ extern const char *__elf_platform;
 #define ELF_ET_DYN_BASE         (TASK_SIZE / 3 * 2)
 #endif
 
+#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
+struct linux_binprm;
+extern int arch_setup_additional_pages(struct linux_binprm *bprm,
+				       int uses_interp);
 #endif /* _ASM_ELF_H */
diff --git a/arch/mips/include/asm/fpu_emulator.h b/arch/mips/include/asm/fpu_emulator.h
index aecada6f611..3b409270556 100644
--- a/arch/mips/include/asm/fpu_emulator.h
+++ b/arch/mips/include/asm/fpu_emulator.h
@@ -41,7 +41,11 @@ struct mips_fpu_emulator_stats {
 DECLARE_PER_CPU(struct mips_fpu_emulator_stats, fpuemustats);
 
 #define MIPS_FPU_EMU_INC_STATS(M)					\
-	cpu_local_wrap(__local_inc(&__get_cpu_var(fpuemustats).M))
+do {									\
+	preempt_disable();						\
+	__local_inc(&__get_cpu_var(fpuemustats).M);			\
+	preempt_enable();						\
+} while (0)
 
 #else
 #define MIPS_FPU_EMU_INC_STATS(M) do { } while (0)
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h
index b12c4aca2cc..96a2391ad85 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h
@@ -85,6 +85,7 @@ enum bcm63xx_regs_set {
 	RSET_TIMER,
 	RSET_WDT,
 	RSET_UART0,
+	RSET_UART1,
 	RSET_GPIO,
 	RSET_SPI,
 	RSET_UDC0,
@@ -123,6 +124,7 @@ enum bcm63xx_regs_set {
 #define BCM_6338_TIMER_BASE		(0xfffe0200)
 #define BCM_6338_WDT_BASE		(0xfffe021c)
 #define BCM_6338_UART0_BASE		(0xfffe0300)
+#define BCM_6338_UART1_BASE		(0xdeadbeef)
 #define BCM_6338_GPIO_BASE		(0xfffe0400)
 #define BCM_6338_SPI_BASE		(0xfffe0c00)
 #define BCM_6338_UDC0_BASE		(0xdeadbeef)
@@ -153,6 +155,7 @@ enum bcm63xx_regs_set {
 #define BCM_6345_TIMER_BASE		(0xfffe0200)
 #define BCM_6345_WDT_BASE		(0xfffe021c)
 #define BCM_6345_UART0_BASE		(0xfffe0300)
+#define BCM_6345_UART1_BASE		(0xdeadbeef)
 #define BCM_6345_GPIO_BASE		(0xfffe0400)
 #define BCM_6345_SPI_BASE		(0xdeadbeef)
 #define BCM_6345_UDC0_BASE		(0xdeadbeef)
@@ -182,6 +185,7 @@ enum bcm63xx_regs_set {
 #define BCM_6348_TIMER_BASE		(0xfffe0200)
 #define BCM_6348_WDT_BASE		(0xfffe021c)
 #define BCM_6348_UART0_BASE		(0xfffe0300)
+#define BCM_6348_UART1_BASE		(0xdeadbeef)
 #define BCM_6348_GPIO_BASE		(0xfffe0400)
 #define BCM_6348_SPI_BASE		(0xfffe0c00)
 #define BCM_6348_UDC0_BASE		(0xfffe1000)
@@ -208,6 +212,7 @@ enum bcm63xx_regs_set {
 #define BCM_6358_TIMER_BASE		(0xfffe0040)
 #define BCM_6358_WDT_BASE		(0xfffe005c)
 #define BCM_6358_UART0_BASE		(0xfffe0100)
+#define BCM_6358_UART1_BASE		(0xfffe0120)
 #define BCM_6358_GPIO_BASE		(0xfffe0080)
 #define BCM_6358_SPI_BASE		(0xdeadbeef)
 #define BCM_6358_UDC0_BASE		(0xfffe0800)
@@ -246,6 +251,8 @@ static inline unsigned long bcm63xx_regset_address(enum bcm63xx_regs_set set)
 		return BCM_6338_WDT_BASE;
 	case RSET_UART0:
 		return BCM_6338_UART0_BASE;
+	case RSET_UART1:
+		return BCM_6338_UART1_BASE;
 	case RSET_GPIO:
 		return BCM_6338_GPIO_BASE;
 	case RSET_SPI:
@@ -292,6 +299,8 @@ static inline unsigned long bcm63xx_regset_address(enum bcm63xx_regs_set set)
 		return BCM_6345_WDT_BASE;
 	case RSET_UART0:
 		return BCM_6345_UART0_BASE;
+	case RSET_UART1:
+		return BCM_6345_UART1_BASE;
 	case RSET_GPIO:
 		return BCM_6345_GPIO_BASE;
 	case RSET_SPI:
@@ -338,6 +347,8 @@ static inline unsigned long bcm63xx_regset_address(enum bcm63xx_regs_set set)
 		return BCM_6348_WDT_BASE;
 	case RSET_UART0:
 		return BCM_6348_UART0_BASE;
+	case RSET_UART1:
+		return BCM_6348_UART1_BASE;
 	case RSET_GPIO:
 		return BCM_6348_GPIO_BASE;
 	case RSET_SPI:
@@ -384,6 +395,8 @@ static inline unsigned long bcm63xx_regset_address(enum bcm63xx_regs_set set)
 		return BCM_6358_WDT_BASE;
 	case RSET_UART0:
 		return BCM_6358_UART0_BASE;
+	case RSET_UART1:
+		return BCM_6358_UART1_BASE;
 	case RSET_GPIO:
 		return BCM_6358_GPIO_BASE;
 	case RSET_SPI:
@@ -429,6 +442,7 @@ static inline unsigned long bcm63xx_regset_address(enum bcm63xx_regs_set set)
 enum bcm63xx_irq {
 	IRQ_TIMER = 0,
 	IRQ_UART0,
+	IRQ_UART1,
 	IRQ_DSL,
 	IRQ_ENET0,
 	IRQ_ENET1,
@@ -510,6 +524,7 @@ enum bcm63xx_irq {
  */
 #define BCM_6358_TIMER_IRQ		(IRQ_INTERNAL_BASE + 0)
 #define BCM_6358_UART0_IRQ		(IRQ_INTERNAL_BASE + 2)
+#define BCM_6358_UART1_IRQ		(IRQ_INTERNAL_BASE + 3)
 #define BCM_6358_OHCI0_IRQ		(IRQ_INTERNAL_BASE + 5)
 #define BCM_6358_ENET1_IRQ		(IRQ_INTERNAL_BASE + 6)
 #define BCM_6358_ENET0_IRQ		(IRQ_INTERNAL_BASE + 8)
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_uart.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_uart.h
new file mode 100644
index 00000000000..23c705baf17
--- /dev/null
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_uart.h
@@ -0,0 +1,6 @@
+#ifndef BCM63XX_DEV_UART_H_
+#define BCM63XX_DEV_UART_H_
+
+int bcm63xx_uart_register(unsigned int id);
+
+#endif /* BCM63XX_DEV_UART_H_ */
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_gpio.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_gpio.h
index 76a0b7216af..43d4da0b1e9 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_gpio.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_gpio.h
@@ -10,6 +10,10 @@ static inline unsigned long bcm63xx_gpio_count(void)
 	switch (bcm63xx_get_cpu_id()) {
 	case BCM6358_CPU_ID:
 		return 40;
+	case BCM6338_CPU_ID:
+		return 8;
+	case BCM6345_CPU_ID:
+		return 16;
 	case BCM6348_CPU_ID:
 	default:
 		return 37;
diff --git a/arch/mips/include/asm/mach-bcm63xx/board_bcm963xx.h b/arch/mips/include/asm/mach-bcm63xx/board_bcm963xx.h
index 6479090a410..474daaa5349 100644
--- a/arch/mips/include/asm/mach-bcm63xx/board_bcm963xx.h
+++ b/arch/mips/include/asm/mach-bcm63xx/board_bcm963xx.h
@@ -45,6 +45,8 @@ struct board_info {
 	unsigned int	has_ohci0:1;
 	unsigned int	has_ehci0:1;
 	unsigned int	has_dsp:1;
+	unsigned int	has_uart0:1;
+	unsigned int	has_uart1:1;
 
 	/* ethernet config */
 	struct bcm63xx_enet_platform_data enet0;
diff --git a/arch/mips/include/asm/mach-bcm63xx/cpu-feature-overrides.h b/arch/mips/include/asm/mach-bcm63xx/cpu-feature-overrides.h
index 71742bac940..f453c01d067 100644
--- a/arch/mips/include/asm/mach-bcm63xx/cpu-feature-overrides.h
+++ b/arch/mips/include/asm/mach-bcm63xx/cpu-feature-overrides.h
@@ -24,7 +24,7 @@
 #define cpu_has_smartmips		0
 #define cpu_has_vtag_icache		0
 
-#if !defined(BCMCPU_RUNTIME_DETECT) && (defined(CONFIG_BCMCPU_IS_6348) || defined(CONFIG_CPU_IS_6338) || defined(CONFIG_CPU_IS_BCM6345))
+#if !defined(BCMCPU_RUNTIME_DETECT) && (defined(CONFIG_BCM63XX_CPU_6348) || defined(CONFIG_BCM63XX_CPU_6345) || defined(CONFIG_BCM63XX_CPU_6338))
 #define cpu_has_dc_aliases		0
 #endif
 
diff --git a/arch/mips/include/asm/mach-sibyte/war.h b/arch/mips/include/asm/mach-sibyte/war.h
index 7950ef4f032..743385d7b5f 100644
--- a/arch/mips/include/asm/mach-sibyte/war.h
+++ b/arch/mips/include/asm/mach-sibyte/war.h
@@ -16,7 +16,11 @@
 #if defined(CONFIG_SB1_PASS_1_WORKAROUNDS) || \
     defined(CONFIG_SB1_PASS_2_WORKAROUNDS)
 
-#define BCM1250_M3_WAR	1
+#ifndef __ASSEMBLY__
+extern int sb1250_m3_workaround_needed(void);
+#endif
+
+#define BCM1250_M3_WAR	sb1250_m3_workaround_needed()
 #define SIBYTE_1956_WAR	1
 
 #else
diff --git a/arch/mips/include/asm/mmu.h b/arch/mips/include/asm/mmu.h
index 4063edd7962..c436138945a 100644
--- a/arch/mips/include/asm/mmu.h
+++ b/arch/mips/include/asm/mmu.h
@@ -1,6 +1,9 @@
 #ifndef __ASM_MMU_H
 #define __ASM_MMU_H
 
-typedef unsigned long mm_context_t[NR_CPUS];
+typedef struct {
+	unsigned long asid[NR_CPUS];
+	void *vdso;
+} mm_context_t;
 
 #endif /* __ASM_MMU_H */
diff --git a/arch/mips/include/asm/mmu_context.h b/arch/mips/include/asm/mmu_context.h
index 145bb81ccaa..d9592733a7b 100644
--- a/arch/mips/include/asm/mmu_context.h
+++ b/arch/mips/include/asm/mmu_context.h
@@ -104,7 +104,7 @@ extern unsigned long smtc_asid_mask;
 
 #endif
 
-#define cpu_context(cpu, mm)	((mm)->context[cpu])
+#define cpu_context(cpu, mm)	((mm)->context.asid[cpu])
 #define cpu_asid(cpu, mm)	(cpu_context((cpu), (mm)) & ASID_MASK)
 #define asid_cache(cpu)		(cpu_data[cpu].asid_cache)
 
diff --git a/arch/mips/include/asm/page.h b/arch/mips/include/asm/page.h
index ac32572430f..a16beafcea9 100644
--- a/arch/mips/include/asm/page.h
+++ b/arch/mips/include/asm/page.h
@@ -188,8 +188,10 @@ typedef struct { unsigned long pgprot; } pgprot_t;
 #define VM_DATA_DEFAULT_FLAGS	(VM_READ | VM_WRITE | VM_EXEC | \
 				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 
-#define UNCAC_ADDR(addr)	((addr) - PAGE_OFFSET + UNCAC_BASE)
-#define CAC_ADDR(addr)		((addr) - UNCAC_BASE + PAGE_OFFSET)
+#define UNCAC_ADDR(addr)	((addr) - PAGE_OFFSET + UNCAC_BASE + 	\
+								PHYS_OFFSET)
+#define CAC_ADDR(addr)		((addr) - UNCAC_BASE + PAGE_OFFSET -	\
+								PHYS_OFFSET)
 
 #include <asm-generic/memory_model.h>
 #include <asm-generic/getorder.h>
diff --git a/arch/mips/include/asm/processor.h b/arch/mips/include/asm/processor.h
index 087a8884ef0..ab387910009 100644
--- a/arch/mips/include/asm/processor.h
+++ b/arch/mips/include/asm/processor.h
@@ -33,13 +33,19 @@ extern void (*cpu_wait)(void);
 
 extern unsigned int vced_count, vcei_count;
 
+/*
+ * A special page (the vdso) is mapped into all processes at the very
+ * top of the virtual memory space.
+ */
+#define SPECIAL_PAGES_SIZE PAGE_SIZE
+
 #ifdef CONFIG_32BIT
 /*
  * User space process size: 2GB. This is hardcoded into a few places,
  * so don't change it unless you know what you are doing.
  */
 #define TASK_SIZE	0x7fff8000UL
-#define STACK_TOP	TASK_SIZE
+#define STACK_TOP	((TASK_SIZE & PAGE_MASK) - SPECIAL_PAGES_SIZE)
 
 /*
  * This decides where the kernel will search for a free chunk of vm
@@ -59,7 +65,8 @@ extern unsigned int vced_count, vcei_count;
 #define TASK_SIZE32	0x7fff8000UL
 #define TASK_SIZE	0x10000000000UL
 #define STACK_TOP	\
-      (test_thread_flag(TIF_32BIT_ADDR) ? TASK_SIZE32 : TASK_SIZE)
+	(((test_thread_flag(TIF_32BIT_ADDR) ?				\
+	   TASK_SIZE32 : TASK_SIZE) & PAGE_MASK) - SPECIAL_PAGES_SIZE)
 
 /*
  * This decides where the kernel will search for a free chunk of vm
diff --git a/arch/mips/include/asm/stackframe.h b/arch/mips/include/asm/stackframe.h
index 3b6da3330e3..c8419129e77 100644
--- a/arch/mips/include/asm/stackframe.h
+++ b/arch/mips/include/asm/stackframe.h
@@ -121,6 +121,25 @@
 		.endm
 #else
 		.macro	get_saved_sp	/* Uniprocessor variation */
+#ifdef CONFIG_CPU_LOONGSON2F
+		/*
+		 * Clear BTB (branch target buffer), forbid RAS (return address
+		 * stack) to workaround the Out-of-order Issue in Loongson2F
+		 * via its diagnostic register.
+		 */
+		move	k0, ra
+		jal	1f
+		 nop
+1:		jal	1f
+		 nop
+1:		jal	1f
+		 nop
+1:		jal	1f
+		 nop
+1:		move	ra, k0
+		li	k0, 3
+		mtc0	k0, $22
+#endif /* CONFIG_CPU_LOONGSON2F */
 #if defined(CONFIG_32BIT) || defined(KBUILD_64BIT_SYM32)
 		lui	k1, %hi(kernelsp)
 #else
diff --git a/arch/mips/include/asm/uasm.h b/arch/mips/include/asm/uasm.h
index b99bd07e199..11a8b525254 100644
--- a/arch/mips/include/asm/uasm.h
+++ b/arch/mips/include/asm/uasm.h
@@ -84,6 +84,7 @@ Ip_u2s3u1(_lw);
 Ip_u1u2u3(_mfc0);
 Ip_u1u2u3(_mtc0);
 Ip_u2u1u3(_ori);
+Ip_u3u1u2(_or);
 Ip_u2s3u1(_pref);
 Ip_0(_rfe);
 Ip_u2s3u1(_sc);
@@ -102,6 +103,7 @@ Ip_0(_tlbwr);
 Ip_u3u1u2(_xor);
 Ip_u2u1u3(_xori);
 Ip_u2u1msbu3(_dins);
+Ip_u1(_syscall);
 
 /* Handle labels. */
 struct uasm_label {
diff --git a/arch/mips/include/asm/vdso.h b/arch/mips/include/asm/vdso.h
new file mode 100644
index 00000000000..cca56aa40ff
--- /dev/null
+++ b/arch/mips/include/asm/vdso.h
@@ -0,0 +1,29 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2009 Cavium Networks
+ */
+
+#ifndef __ASM_VDSO_H
+#define __ASM_VDSO_H
+
+#include <linux/types.h>
+
+
+#ifdef CONFIG_32BIT
+struct mips_vdso {
+	u32 signal_trampoline[2];
+	u32 rt_signal_trampoline[2];
+};
+#else  /* !CONFIG_32BIT */
+struct mips_vdso {
+	u32 o32_signal_trampoline[2];
+	u32 o32_rt_signal_trampoline[2];
+	u32 rt_signal_trampoline[2];
+	u32 n32_rt_signal_trampoline[2];
+};
+#endif /* CONFIG_32BIT */
+
+#endif /* __ASM_VDSO_H */