Merge branch 'perf/urgent' into perf/core

Merge reason: Upcoming patch is dependent on a fix in perf/urgent.

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

20 files changed, 114 insertions, 254 deletions

diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 011a1cdf0eb5..1ee596cd942f 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -60,9 +60,7 @@ config IOMMU_HELPER
        bool
 
 config GENERIC_LOCKBREAK
-	bool
-	default y
-	depends on SMP && PREEMPT
+	def_bool n
 
 config RWSEM_XCHGADD_ALGORITHM
 	bool
@@ -500,6 +498,10 @@ config HAVE_ARCH_NODEDATA_EXTENSION
 	def_bool y
 	depends on NUMA
 
+config ARCH_PROC_KCORE_TEXT
+	def_bool y
+	depends on PROC_KCORE
+
 config IA32_SUPPORT
 	bool "Support for Linux/x86 binaries"
 	help
diff --git a/arch/ia64/hp/common/sba_iommu.c b/arch/ia64/hp/common/sba_iommu.c
index 8cfb001092ab..674a8374c6d9 100644
--- a/arch/ia64/hp/common/sba_iommu.c
+++ b/arch/ia64/hp/common/sba_iommu.c
@@ -2026,24 +2026,21 @@ acpi_sba_ioc_add(struct acpi_device *device)
 	struct ioc *ioc;
 	acpi_status status;
 	u64 hpa, length;
-	struct acpi_buffer buffer;
 	struct acpi_device_info *dev_info;
 
 	status = hp_acpi_csr_space(device->handle, &hpa, &length);
 	if (ACPI_FAILURE(status))
 		return 1;
 
-	buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
-	status = acpi_get_object_info(device->handle, &buffer);
+	status = acpi_get_object_info(device->handle, &dev_info);
 	if (ACPI_FAILURE(status))
 		return 1;
-	dev_info = buffer.pointer;
 
 	/*
 	 * For HWP0001, only SBA appears in ACPI namespace.  It encloses the PCI
 	 * root bridges, and its CSR space includes the IOC function.
 	 */
-	if (strncmp("HWP0001", dev_info->hardware_id.value, 7) == 0) {
+	if (strncmp("HWP0001", dev_info->hardware_id.string, 7) == 0) {
 		hpa += ZX1_IOC_OFFSET;
 		/* zx1 based systems default to kernel page size iommu pages */
 		if (!iovp_shift)
diff --git a/arch/ia64/ia32/binfmt_elf32.c b/arch/ia64/ia32/binfmt_elf32.c
index f92bdaac8976..c69552bf893e 100644
--- a/arch/ia64/ia32/binfmt_elf32.c
+++ b/arch/ia64/ia32/binfmt_elf32.c
@@ -69,11 +69,11 @@ ia32_install_gate_page (struct vm_area_struct *vma, struct vm_fault *vmf)
 }
 
 
-static struct vm_operations_struct ia32_shared_page_vm_ops = {
+static const struct vm_operations_struct ia32_shared_page_vm_ops = {
 	.fault = ia32_install_shared_page
 };
 
-static struct vm_operations_struct ia32_gate_page_vm_ops = {
+static const struct vm_operations_struct ia32_gate_page_vm_ops = {
 	.fault = ia32_install_gate_page
 };
 
diff --git a/arch/ia64/ia32/sys_ia32.c b/arch/ia64/ia32/sys_ia32.c
index 16ef61a91d95..625ed8f76fce 100644
--- a/arch/ia64/ia32/sys_ia32.c
+++ b/arch/ia64/ia32/sys_ia32.c
@@ -1270,7 +1270,7 @@ putreg (struct task_struct *child, int regno, unsigned int value)
 	      case PT_CS:
 		if (value != __USER_CS)
 			printk(KERN_ERR
-			       "ia32.putreg: attempt to to set invalid segment register %d = %x\n",
+			       "ia32.putreg: attempt to set invalid segment register %d = %x\n",
 			       regno, value);
 		break;
 	      default:
diff --git a/arch/ia64/include/asm/acpi.h b/arch/ia64/include/asm/acpi.h
index 0f82cc2934e1..91df9686a0da 100644
--- a/arch/ia64/include/asm/acpi.h
+++ b/arch/ia64/include/asm/acpi.h
@@ -89,10 +89,12 @@ ia64_acpi_release_global_lock (unsigned int *lock)
 #define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq)				\
 	((Acq) = ia64_acpi_release_global_lock(&facs->global_lock))
 
+#ifdef	CONFIG_ACPI
 #define acpi_disabled 0	/* ACPI always enabled on IA64 */
 #define acpi_noirq 0	/* ACPI always enabled on IA64 */
 #define acpi_pci_disabled 0 /* ACPI PCI always enabled on IA64 */
 #define acpi_strict 1	/* no ACPI spec workarounds on IA64 */
+#endif
 #define acpi_processor_cstate_check(x) (x) /* no idle limits on IA64 :) */
 static inline void disable_acpi(void) { }
 
diff --git a/arch/ia64/include/asm/cputime.h b/arch/ia64/include/asm/cputime.h
index d20b998cb91d..7fa8a8594660 100644
--- a/arch/ia64/include/asm/cputime.h
+++ b/arch/ia64/include/asm/cputime.h
@@ -30,6 +30,7 @@ typedef u64 cputime_t;
 typedef u64 cputime64_t;
 
 #define cputime_zero			((cputime_t)0)
+#define cputime_one_jiffy		jiffies_to_cputime(1)
 #define cputime_max			((~((cputime_t)0) >> 1) - 1)
 #define cputime_add(__a, __b)		((__a) +  (__b))
 #define cputime_sub(__a, __b)		((__a) -  (__b))
diff --git a/arch/ia64/include/asm/mman.h b/arch/ia64/include/asm/mman.h
index 48cf8b98a0b4..4459028e5aa8 100644
--- a/arch/ia64/include/asm/mman.h
+++ b/arch/ia64/include/asm/mman.h
@@ -8,19 +8,9 @@
  *	David Mosberger-Tang <davidm@hpl.hp.com>, Hewlett-Packard Co
  */
 
-#include <asm-generic/mman-common.h>
+#include <asm-generic/mman.h>
 
-#define MAP_GROWSDOWN	0x00100		/* stack-like segment */
-#define MAP_GROWSUP	0x00200		/* register stack-like segment */
-#define MAP_DENYWRITE	0x00800		/* ETXTBSY */
-#define MAP_EXECUTABLE	0x01000		/* mark it as an executable */
-#define MAP_LOCKED	0x02000		/* pages are locked */
-#define MAP_NORESERVE	0x04000		/* don't check for reservations */
-#define MAP_POPULATE	0x08000		/* populate (prefault) pagetables */
-#define MAP_NONBLOCK	0x10000		/* do not block on IO */
-
-#define MCL_CURRENT	1		/* lock all current mappings */
-#define MCL_FUTURE	2		/* lock all future mappings */
+#define MAP_GROWSUP	0x0200		/* register stack-like segment */
 
 #ifdef __KERNEL__
 #ifndef __ASSEMBLY__
diff --git a/arch/ia64/include/asm/smp.h b/arch/ia64/include/asm/smp.h
index d217d1d4e051..0b3b3997decd 100644
--- a/arch/ia64/include/asm/smp.h
+++ b/arch/ia64/include/asm/smp.h
@@ -127,7 +127,6 @@ extern int is_multithreading_enabled(void);
 
 extern void arch_send_call_function_single_ipi(int cpu);
 extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
-#define arch_send_call_function_ipi_mask arch_send_call_function_ipi_mask
 
 #else /* CONFIG_SMP */
 
diff --git a/arch/ia64/include/asm/spinlock.h b/arch/ia64/include/asm/spinlock.h
index 13ab71576bc7..30bb930e1111 100644
--- a/arch/ia64/include/asm/spinlock.h
+++ b/arch/ia64/include/asm/spinlock.h
@@ -19,103 +19,106 @@
 
 #define __raw_spin_lock_init(x)			((x)->lock = 0)
 
-#ifdef ASM_SUPPORTED
 /*
- * Try to get the lock.  If we fail to get the lock, make a non-standard call to
- * ia64_spinlock_contention().  We do not use a normal call because that would force all
- * callers of __raw_spin_lock() to be non-leaf routines.  Instead, ia64_spinlock_contention() is
- * carefully coded to touch only those registers that __raw_spin_lock() marks "clobbered".
+ * Ticket locks are conceptually two parts, one indicating the current head of
+ * the queue, and the other indicating the current tail. The lock is acquired
+ * by atomically noting the tail and incrementing it by one (thus adding
+ * ourself to the queue and noting our position), then waiting until the head
+ * becomes equal to the the initial value of the tail.
+ *
+ *   63                     32  31                      0
+ *  +----------------------------------------------------+
+ *  |  next_ticket_number      |     now_serving         |
+ *  +----------------------------------------------------+
  */
 
-#define IA64_SPINLOCK_CLOBBERS "ar.ccv", "ar.pfs", "p14", "p15", "r27", "r28", "r29", "r30", "b6", "memory"
+#define TICKET_SHIFT	32
 
-static inline void
-__raw_spin_lock_flags (raw_spinlock_t *lock, unsigned long flags)
+static __always_inline void __ticket_spin_lock(raw_spinlock_t *lock)
 {
-	register volatile unsigned int *ptr asm ("r31") = &lock->lock;
-
-#if (__GNUC__ == 3 && __GNUC_MINOR__ < 3)
-# ifdef CONFIG_ITANIUM
-	/* don't use brl on Itanium... */
-	asm volatile ("{\n\t"
-		      "  mov ar.ccv = r0\n\t"
-		      "  mov r28 = ip\n\t"
-		      "  mov r30 = 1;;\n\t"
-		      "}\n\t"
-		      "cmpxchg4.acq r30 = [%1], r30, ar.ccv\n\t"
-		      "movl r29 = ia64_spinlock_contention_pre3_4;;\n\t"
-		      "cmp4.ne p14, p0 = r30, r0\n\t"
-		      "mov b6 = r29;;\n\t"
-		      "mov r27=%2\n\t"
-		      "(p14) br.cond.spnt.many b6"
-		      : "=r"(ptr) : "r"(ptr), "r" (flags) : IA64_SPINLOCK_CLOBBERS);
-# else
-	asm volatile ("{\n\t"
-		      "  mov ar.ccv = r0\n\t"
-		      "  mov r28 = ip\n\t"
-		      "  mov r30 = 1;;\n\t"
-		      "}\n\t"
-		      "cmpxchg4.acq r30 = [%1], r30, ar.ccv;;\n\t"
-		      "cmp4.ne p14, p0 = r30, r0\n\t"
-		      "mov r27=%2\n\t"
-		      "(p14) brl.cond.spnt.many ia64_spinlock_contention_pre3_4;;"
-		      : "=r"(ptr) : "r"(ptr), "r" (flags) : IA64_SPINLOCK_CLOBBERS);
-# endif /* CONFIG_MCKINLEY */
-#else
-# ifdef CONFIG_ITANIUM
-	/* don't use brl on Itanium... */
-	/* mis-declare, so we get the entry-point, not it's function descriptor: */
-	asm volatile ("mov r30 = 1\n\t"
-		      "mov r27=%2\n\t"
-		      "mov ar.ccv = r0;;\n\t"
-		      "cmpxchg4.acq r30 = [%0], r30, ar.ccv\n\t"
-		      "movl r29 = ia64_spinlock_contention;;\n\t"
-		      "cmp4.ne p14, p0 = r30, r0\n\t"
-		      "mov b6 = r29;;\n\t"
-		      "(p14) br.call.spnt.many b6 = b6"
-		      : "=r"(ptr) : "r"(ptr), "r" (flags) : IA64_SPINLOCK_CLOBBERS);
-# else
-	asm volatile ("mov r30 = 1\n\t"
-		      "mov r27=%2\n\t"
-		      "mov ar.ccv = r0;;\n\t"
-		      "cmpxchg4.acq r30 = [%0], r30, ar.ccv;;\n\t"
-		      "cmp4.ne p14, p0 = r30, r0\n\t"
-		      "(p14) brl.call.spnt.many b6=ia64_spinlock_contention;;"
-		      : "=r"(ptr) : "r"(ptr), "r" (flags) : IA64_SPINLOCK_CLOBBERS);
-# endif /* CONFIG_MCKINLEY */
-#endif
+	int	*p = (int *)&lock->lock, turn, now_serving;
+
+	now_serving = *p;
+	turn = ia64_fetchadd(1, p+1, acq);
+
+	if (turn == now_serving)
+		return;
+
+	do {
+		cpu_relax();
+	} while (ACCESS_ONCE(*p) != turn);
 }
 
-#define __raw_spin_lock(lock) __raw_spin_lock_flags(lock, 0)
+static __always_inline int __ticket_spin_trylock(raw_spinlock_t *lock)
+{
+	long tmp = ACCESS_ONCE(lock->lock), try;
 
-/* Unlock by doing an ordered store and releasing the cacheline with nta */
-static inline void __raw_spin_unlock(raw_spinlock_t *x) {
-	barrier();
-	asm volatile ("st4.rel.nta [%0] = r0\n\t" :: "r"(x));
+	if (!(((tmp >> TICKET_SHIFT) ^ tmp) & ((1L << TICKET_SHIFT) - 1))) {
+		try = tmp + (1L << TICKET_SHIFT);
+
+		return ia64_cmpxchg(acq, &lock->lock, tmp, try, sizeof (tmp)) == tmp;
+	}
+	return 0;
 }
 
-#else /* !ASM_SUPPORTED */
-#define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock)
-# define __raw_spin_lock(x)								\
-do {											\
-	__u32 *ia64_spinlock_ptr = (__u32 *) (x);					\
-	__u64 ia64_spinlock_val;							\
-	ia64_spinlock_val = ia64_cmpxchg4_acq(ia64_spinlock_ptr, 1, 0);			\
-	if (unlikely(ia64_spinlock_val)) {						\
-		do {									\
-			while (*ia64_spinlock_ptr)					\
-				ia64_barrier();						\
-			ia64_spinlock_val = ia64_cmpxchg4_acq(ia64_spinlock_ptr, 1, 0);	\
-		} while (ia64_spinlock_val);						\
-	}										\
-} while (0)
-#define __raw_spin_unlock(x)	do { barrier(); ((raw_spinlock_t *) x)->lock = 0; } while (0)
-#endif /* !ASM_SUPPORTED */
+static __always_inline void __ticket_spin_unlock(raw_spinlock_t *lock)
+{
+	int	*p = (int *)&lock->lock;
+
+	(void)ia64_fetchadd(1, p, rel);
+}
+
+static inline int __ticket_spin_is_locked(raw_spinlock_t *lock)
+{
+	long tmp = ACCESS_ONCE(lock->lock);
+
+	return !!(((tmp >> TICKET_SHIFT) ^ tmp) & ((1L << TICKET_SHIFT) - 1));
+}
+
+static inline int __ticket_spin_is_contended(raw_spinlock_t *lock)
+{
+	long tmp = ACCESS_ONCE(lock->lock);
 
-#define __raw_spin_is_locked(x)		((x)->lock != 0)
-#define __raw_spin_trylock(x)		(cmpxchg_acq(&(x)->lock, 0, 1) == 0)
-#define __raw_spin_unlock_wait(lock) \
-	do { while (__raw_spin_is_locked(lock)) cpu_relax(); } while (0)
+	return (((tmp >> TICKET_SHIFT) - tmp) & ((1L << TICKET_SHIFT) - 1)) > 1;
+}
+
+static inline int __raw_spin_is_locked(raw_spinlock_t *lock)
+{
+	return __ticket_spin_is_locked(lock);
+}
+
+static inline int __raw_spin_is_contended(raw_spinlock_t *lock)
+{
+	return __ticket_spin_is_contended(lock);
+}
+#define __raw_spin_is_contended	__raw_spin_is_contended
+
+static __always_inline void __raw_spin_lock(raw_spinlock_t *lock)
+{
+	__ticket_spin_lock(lock);
+}
+
+static __always_inline int __raw_spin_trylock(raw_spinlock_t *lock)
+{
+	return __ticket_spin_trylock(lock);
+}
+
+static __always_inline void __raw_spin_unlock(raw_spinlock_t *lock)
+{
+	__ticket_spin_unlock(lock);
+}
+
+static __always_inline void __raw_spin_lock_flags(raw_spinlock_t *lock,
+						  unsigned long flags)
+{
+	__raw_spin_lock(lock);
+}
+
+static inline void __raw_spin_unlock_wait(raw_spinlock_t *lock)
+{
+	while (__raw_spin_is_locked(lock))
+		cpu_relax();
+}
 
 #define __raw_read_can_lock(rw)		(*(volatile int *)(rw) >= 0)
 #define __raw_write_can_lock(rw)	(*(volatile int *)(rw) == 0)
diff --git a/arch/ia64/include/asm/spinlock_types.h b/arch/ia64/include/asm/spinlock_types.h
index 474e46f1ab4a..b61d136d9bc2 100644
--- a/arch/ia64/include/asm/spinlock_types.h
+++ b/arch/ia64/include/asm/spinlock_types.h
@@ -6,7 +6,7 @@
 #endif
 
 typedef struct {
-	volatile unsigned int lock;
+	volatile unsigned long lock;
 } raw_spinlock_t;
 
 #define __RAW_SPIN_LOCK_UNLOCKED	{ 0 }
diff --git a/arch/ia64/include/asm/topology.h b/arch/ia64/include/asm/topology.h
index d0141fbf51d0..3ddb4e709dba 100644
--- a/arch/ia64/include/asm/topology.h
+++ b/arch/ia64/include/asm/topology.h
@@ -33,7 +33,6 @@
 /*
  * Returns a bitmask of CPUs on Node 'node'.
  */
-#define node_to_cpumask(node) (node_to_cpu_mask[node])
 #define cpumask_of_node(node) (&node_to_cpu_mask[node])
 
 /*
@@ -104,8 +103,6 @@ void build_cpu_to_node_map(void);
 #ifdef CONFIG_SMP
 #define topology_physical_package_id(cpu)	(cpu_data(cpu)->socket_id)
 #define topology_core_id(cpu)			(cpu_data(cpu)->core_id)
-#define topology_core_siblings(cpu)		(cpu_core_map[cpu])
-#define topology_thread_siblings(cpu)		(per_cpu(cpu_sibling_map, cpu))
 #define topology_core_cpumask(cpu)		(&cpu_core_map[cpu])
 #define topology_thread_cpumask(cpu)		(&per_cpu(cpu_sibling_map, cpu))
 #define smt_capable() 				(smp_num_siblings > 1)
diff --git a/arch/ia64/install.sh b/arch/ia64/install.sh
index 929e780026d1..0e932f5dcd1a 100644
--- a/arch/ia64/install.sh
+++ b/arch/ia64/install.sh
@@ -21,8 +21,8 @@
 
 # User may have a custom install script
 
-if [ -x ~/bin/installkernel ]; then exec ~/bin/installkernel "$@"; fi
-if [ -x /sbin/installkernel ]; then exec /sbin/installkernel "$@"; fi
+if [ -x ~/bin/${INSTALLKERNEL} ]; then exec ~/bin/${INSTALLKERNEL} "$@"; fi
+if [ -x /sbin/${INSTALLKERNEL} ]; then exec /sbin/${INSTALLKERNEL} "$@"; fi
 
 # Default install - same as make zlilo
 
diff --git a/arch/ia64/kernel/Makefile.gate b/arch/ia64/kernel/Makefile.gate
index 1d87f84069b3..ab9b03a9adcc 100644
--- a/arch/ia64/kernel/Makefile.gate
+++ b/arch/ia64/kernel/Makefile.gate
@@ -10,7 +10,7 @@ quiet_cmd_gate = GATE $@
       cmd_gate = $(CC) -nostdlib $(GATECFLAGS_$(@F)) -Wl,-T,$(filter-out FORCE,$^) -o $@
 
 GATECFLAGS_gate.so = -shared -s -Wl,-soname=linux-gate.so.1 \
-		     $(call ld-option, -Wl$(comma)--hash-style=sysv)
+		     $(call cc-ldoption, -Wl$(comma)--hash-style=sysv)
 $(obj)/gate.so: $(obj)/gate.lds $(obj)/gate.o FORCE
 	$(call if_changed,gate)
 
diff --git a/arch/ia64/kernel/head.S b/arch/ia64/kernel/head.S
index 1a6e44515eb4..696eff28a0c4 100644
--- a/arch/ia64/kernel/head.S
+++ b/arch/ia64/kernel/head.S
@@ -1130,95 +1130,6 @@ SET_REG(b5);
 #endif /* CONFIG_IA64_BRL_EMU */
 
 #ifdef CONFIG_SMP
-	/*
-	 * This routine handles spinlock contention.  It uses a non-standard calling
-	 * convention to avoid converting leaf routines into interior routines.  Because
-	 * of this special convention, there are several restrictions:
-	 *
-	 * - do not use gp relative variables, this code is called from the kernel
-	 *   and from modules, r1 is undefined.
-	 * - do not use stacked registers, the caller owns them.
-	 * - do not use the scratch stack space, the caller owns it.
-	 * - do not use any registers other than the ones listed below
-	 *
-	 * Inputs:
-	 *   ar.pfs - saved CFM of caller
-	 *   ar.ccv - 0 (and available for use)
-	 *   r27    - flags from spin_lock_irqsave or 0.  Must be preserved.
-	 *   r28    - available for use.
-	 *   r29    - available for use.
-	 *   r30    - available for use.
-	 *   r31    - address of lock, available for use.
-	 *   b6     - return address
-	 *   p14    - available for use.
-	 *   p15    - used to track flag status.
-	 *
-	 * If you patch this code to use more registers, do not forget to update
-	 * the clobber lists for spin_lock() in arch/ia64/include/asm/spinlock.h.
-	 */
-
-#if (__GNUC__ == 3 && __GNUC_MINOR__ < 3)
-
-GLOBAL_ENTRY(ia64_spinlock_contention_pre3_4)
-	.prologue
-	.save ar.pfs, r0	// this code effectively has a zero frame size
-	.save rp, r28
-	.body
-	nop 0
-	tbit.nz p15,p0=r27,IA64_PSR_I_BIT
-	.restore sp		// pop existing prologue after next insn
-	mov b6 = r28
-	.prologue
-	.save ar.pfs, r0
-	.altrp b6
-	.body
-	;;
-(p15)	ssm psr.i		// reenable interrupts if they were on
-				// DavidM says that srlz.d is slow and is not required in this case
-.wait:
-	// exponential backoff, kdb, lockmeter etc. go in here
-	hint @pause
-	ld4 r30=[r31]		// don't use ld4.bias; if it's contended, we won't write the word
-	nop 0
-	;;
-	cmp4.ne p14,p0=r30,r0
-(p14)	br.cond.sptk.few .wait
-(p15)	rsm psr.i		// disable interrupts if we reenabled them
-	br.cond.sptk.few b6	// lock is now free, try to acquire
-	.global ia64_spinlock_contention_pre3_4_end	// for kernprof
-ia64_spinlock_contention_pre3_4_end:
-END(ia64_spinlock_contention_pre3_4)
-
-#else
-
-GLOBAL_ENTRY(ia64_spinlock_contention)
-	.prologue
-	.altrp b6
-	.body
-	tbit.nz p15,p0=r27,IA64_PSR_I_BIT
-	;;
-.wait:
-(p15)	ssm psr.i		// reenable interrupts if they were on
-				// DavidM says that srlz.d is slow and is not required in this case
-.wait2:
-	// exponential backoff, kdb, lockmeter etc. go in here
-	hint @pause
-	ld4 r30=[r31]		// don't use ld4.bias; if it's contended, we won't write the word
-	;;
-	cmp4.ne p14,p0=r30,r0
-	mov r30 = 1
-(p14)	br.cond.sptk.few .wait2
-(p15)	rsm psr.i		// disable interrupts if we reenabled them
-	;;
-	cmpxchg4.acq r30=[r31], r30, ar.ccv
-	;;
-	cmp4.ne p14,p0=r0,r30
-(p14)	br.cond.sptk.few .wait
-
-	br.ret.sptk.many b6	// lock is now taken
-END(ia64_spinlock_contention)
-
-#endif
 
 #ifdef CONFIG_HOTPLUG_CPU
 GLOBAL_ENTRY(ia64_jump_to_sal)
diff --git a/arch/ia64/kernel/ia64_ksyms.c b/arch/ia64/kernel/ia64_ksyms.c
index 8ebccb589e1c..14d39e300627 100644
--- a/arch/ia64/kernel/ia64_ksyms.c
+++ b/arch/ia64/kernel/ia64_ksyms.c
@@ -84,26 +84,6 @@ EXPORT_SYMBOL(ia64_save_scratch_fpregs);
 #include <asm/unwind.h>
 EXPORT_SYMBOL(unw_init_running);
 
-#ifdef ASM_SUPPORTED
-# ifdef CONFIG_SMP
-#  if (__GNUC__ == 3 && __GNUC_MINOR__ < 3)
-/*
- * This is not a normal routine and we don't want a function descriptor for it, so we use
- * a fake declaration here.
- */
-extern char ia64_spinlock_contention_pre3_4;
-EXPORT_SYMBOL(ia64_spinlock_contention_pre3_4);
-#  else
-/*
- * This is not a normal routine and we don't want a function descriptor for it, so we use
- * a fake declaration here.
- */
-extern char ia64_spinlock_contention;
-EXPORT_SYMBOL(ia64_spinlock_contention);
-#  endif
-# endif
-#endif
-
 #if defined(CONFIG_IA64_ESI) || defined(CONFIG_IA64_ESI_MODULE)
 extern void esi_call_phys (void);
 EXPORT_SYMBOL_GPL(esi_call_phys);
diff --git a/arch/ia64/kernel/init_task.c b/arch/ia64/kernel/init_task.c
index c475fc281be7..e253ab8fcbc8 100644
--- a/arch/ia64/kernel/init_task.c
+++ b/arch/ia64/kernel/init_task.c
@@ -33,7 +33,8 @@ union {
 		struct thread_info thread_info;
 	} s;
 	unsigned long stack[KERNEL_STACK_SIZE/sizeof (unsigned long)];
-} init_task_mem asm ("init_task") __attribute__((section(".data.init_task"))) = {{
+} init_task_mem asm ("init_task") __init_task_data =
+	{{
 	.task =		INIT_TASK(init_task_mem.s.task),
 	.thread_info =	INIT_THREAD_INFO(init_task_mem.s.task)
 }};
diff --git a/arch/ia64/kernel/pci-swiotlb.c b/arch/ia64/kernel/pci-swiotlb.c
index 223abb134105..285aae8431c6 100644
--- a/arch/ia64/kernel/pci-swiotlb.c
+++ b/arch/ia64/kernel/pci-swiotlb.c
@@ -46,7 +46,7 @@ void __init swiotlb_dma_init(void)
 
 void __init pci_swiotlb_init(void)
 {
-	if (!iommu_detected || iommu_pass_through) {
+	if (!iommu_detected) {
 #ifdef CONFIG_IA64_GENERIC
 		swiotlb = 1;
 		printk(KERN_INFO "PCI-DMA: Re-initialize machine vector.\n");
diff --git a/arch/ia64/kernel/smp.c b/arch/ia64/kernel/smp.c
index 93ebfea43c6c..dabeefe21134 100644
--- a/arch/ia64/kernel/smp.c
+++ b/arch/ia64/kernel/smp.c
@@ -302,7 +302,7 @@ smp_flush_tlb_mm (struct mm_struct *mm)
 		return;
 	}
 
-	smp_call_function_mask(mm->cpu_vm_mask,
+	smp_call_function_many(mm_cpumask(mm),
 		(void (*)(void *))local_finish_flush_tlb_mm, mm, 1);
 	local_irq_disable();
 	local_finish_flush_tlb_mm(mm);
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index b115b3bbf04a..1857766a63c1 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -617,7 +617,6 @@ mem_init (void)
 	long reserved_pages, codesize, datasize, initsize;
 	pg_data_t *pgdat;
 	int i;
-	static struct kcore_list kcore_mem, kcore_vmem, kcore_kernel;
 
 	BUG_ON(PTRS_PER_PGD * sizeof(pgd_t) != PAGE_SIZE);
 	BUG_ON(PTRS_PER_PMD * sizeof(pmd_t) != PAGE_SIZE);
@@ -639,10 +638,6 @@ mem_init (void)
 
 	high_memory = __va(max_low_pfn * PAGE_SIZE);
 
-	kclist_add(&kcore_mem, __va(0), max_low_pfn * PAGE_SIZE);
-	kclist_add(&kcore_vmem, (void *)VMALLOC_START, VMALLOC_END-VMALLOC_START);
-	kclist_add(&kcore_kernel, _stext, _end - _stext);
-
 	for_each_online_pgdat(pgdat)
 		if (pgdat->bdata->node_bootmem_map)
 			totalram_pages += free_all_bootmem_node(pgdat);
@@ -655,7 +650,7 @@ mem_init (void)
 	initsize =  (unsigned long) __init_end - (unsigned long) __init_begin;
 
 	printk(KERN_INFO "Memory: %luk/%luk available (%luk code, %luk reserved, "
-	       "%luk data, %luk init)\n", (unsigned long) nr_free_pages() << (PAGE_SHIFT - 10),
+	       "%luk data, %luk init)\n", nr_free_pages() << (PAGE_SHIFT - 10),
 	       num_physpages << (PAGE_SHIFT - 10), codesize >> 10,
 	       reserved_pages << (PAGE_SHIFT - 10), datasize >> 10, initsize >> 10);
 
diff --git a/arch/ia64/oprofile/backtrace.c b/arch/ia64/oprofile/backtrace.c
index adb01566bd57..5cdd7e4a597c 100644
--- a/arch/ia64/oprofile/backtrace.c
+++ b/arch/ia64/oprofile/backtrace.c
@@ -32,24 +32,6 @@ typedef struct
 	u64 *prev_pfs_loc;	/* state for WAR for old spinlock ool code */
 } ia64_backtrace_t;
 
-#if (__GNUC__ == 3 && __GNUC_MINOR__ < 3)
-/*
- * Returns non-zero if the PC is in the spinlock contention out-of-line code
- * with non-standard calling sequence (on older compilers).
- */
-static __inline__ int in_old_ool_spinlock_code(unsigned long pc)
-{
-	extern const char ia64_spinlock_contention_pre3_4[] __attribute__ ((weak));
-	extern const char ia64_spinlock_contention_pre3_4_end[] __attribute__ ((weak));
-	unsigned long sc_start = (unsigned long)ia64_spinlock_contention_pre3_4;
-	unsigned long sc_end = (unsigned long)ia64_spinlock_contention_pre3_4_end;
-	return (sc_start && sc_end && pc >= sc_start && pc < sc_end);
-}
-#else
-/* Newer spinlock code does a proper br.call and works fine with the unwinder */
-#define in_old_ool_spinlock_code(pc)	0
-#endif
-
 /* Returns non-zero if the PC is in the Interrupt Vector Table */
 static __inline__ int in_ivt_code(unsigned long pc)
 {
@@ -80,7 +62,7 @@ static __inline__ int next_frame(ia64_backtrace_t *bt)
 	 */
 	if (bt->prev_pfs_loc && bt->regs && bt->frame.pfs_loc == bt->prev_pfs_loc)
 		bt->frame.pfs_loc = &bt->regs->ar_pfs;
-	bt->prev_pfs_loc = (in_old_ool_spinlock_code(bt->frame.ip) ? bt->frame.pfs_loc : NULL);
+	bt->prev_pfs_loc = NULL;
 
 	return unw_unwind(&bt->frame) == 0;
 }