Merge branch 'master' of /home/trondmy/repositories/git/linux-2.6/

arch/avr32/boards/atstk1000/atstk1000.h

@@ -0,0 +1,15 @@
+/*
+ * ATSTK1000 setup code: Daughterboard interface
+ *
+ * Copyright (C) 2007 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __ARCH_AVR32_BOARDS_ATSTK1000_ATSTK1000_H
+#define __ARCH_AVR32_BOARDS_ATSTK1000_ATSTK1000_H
+
+extern struct atmel_lcdfb_info atstk1000_lcdc_data;
+
+#endif /* __ARCH_AVR32_BOARDS_ATSTK1000_ATSTK1000_H */

arch/avr32/boards/atstk1000/atstk1002.c

@@ -16,6 +16,8 @@
 #include <linux/types.h>
 #include <linux/spi/spi.h>
 
+#include <video/atmel_lcdc.h>
+
 #include <asm/io.h>
 #include <asm/setup.h>
 #include <asm/arch/at32ap7000.h>
@@ -23,6 +25,7 @@
 #include <asm/arch/init.h>
 #include <asm/arch/portmux.h>
 
+#include "atstk1000.h"
 
 #define	SW2_DEFAULT		/* MMCI and UART_A available */
 
@@ -31,9 +34,7 @@ struct eth_addr {
 };
 
 static struct eth_addr __initdata hw_addr[2];
-
 static struct eth_platform_data __initdata eth_data[2];
-static struct lcdc_platform_data atstk1000_fb0_data;
 
 static struct spi_board_info spi0_board_info[] __initdata = {
 	{
@@ -148,9 +149,8 @@ static int __init atstk1002_init(void)
 	set_hw_addr(at32_add_device_eth(0, &eth_data[0]));
 
 	at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
-	atstk1000_fb0_data.fbmem_start = fbmem_start;
-	atstk1000_fb0_data.fbmem_size = fbmem_size;
-	at32_add_device_lcdc(0, &atstk1000_fb0_data);
+	at32_add_device_lcdc(0, &atstk1000_lcdc_data,
+			     fbmem_start, fbmem_size);
 
 	return 0;
 }

arch/avr32/boards/atstk1000/setup.c

@@ -8,13 +8,56 @@
  * published by the Free Software Foundation.
  */
 #include <linux/bootmem.h>
+#include <linux/fb.h>
 #include <linux/init.h>
 #include <linux/types.h>
 #include <linux/linkage.h>
 
-#include <asm/setup.h>
+#include <video/atmel_lcdc.h>
 
+#include <asm/setup.h>
 #include <asm/arch/board.h>
 
+#include "atstk1000.h"
+
 /* Initialized by bootloader-specific startup code. */
 struct tag *bootloader_tags __initdata;
+
+static struct fb_videomode __initdata ltv350qv_modes[] = {
+	{
+		.name		= "320x240 @ 75",
+		.refresh	= 75,
+		.xres		= 320,		.yres		= 240,
+		.pixclock	= KHZ2PICOS(6891),
+
+		.left_margin	= 17,		.right_margin	= 33,
+		.upper_margin	= 10,		.lower_margin	= 10,
+		.hsync_len	= 16,		.vsync_len	= 1,
+
+		.sync		= 0,
+		.vmode		= FB_VMODE_NONINTERLACED,
+	},
+};
+
+static struct fb_monspecs __initdata atstk1000_default_monspecs = {
+	.manufacturer		= "SNG",
+	.monitor		= "LTV350QV",
+	.modedb			= ltv350qv_modes,
+	.modedb_len		= ARRAY_SIZE(ltv350qv_modes),
+	.hfmin			= 14820,
+	.hfmax			= 22230,
+	.vfmin			= 60,
+	.vfmax			= 90,
+	.dclkmax		= 30000000,
+};
+
+struct atmel_lcdfb_info __initdata atstk1000_lcdc_data = {
+	.default_bpp		= 24,
+	.default_dmacon		= ATMEL_LCDC_DMAEN | ATMEL_LCDC_DMA2DEN,
+	.default_lcdcon2	= (ATMEL_LCDC_DISTYPE_TFT
+				   | ATMEL_LCDC_INVCLK
+				   | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE
+				   | ATMEL_LCDC_MEMOR_BIG),
+	.default_monspecs	= &atstk1000_default_monspecs,
+	.guard_time		= 2,
+};

arch/avr32/kernel/irq.c

@@ -7,15 +7,6 @@
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
- *
- * This file contains the code used by various IRQ handling routines:
- * asking for different IRQ's should be done through these routines
- * instead of just grabbing them. Thus setups with different IRQ numbers
- * shouldn't result in any weird surprises, and installing new handlers
- * should be easier.
- *
- * IRQ's are in fact implemented a bit like signal handlers for the kernel.
- * Naturally it's not a 1:1 relation, but there are similarities.
  */
 
 #include <linux/interrupt.h>

arch/avr32/kernel/kprobes.c

@@ -179,7 +179,7 @@ static int __kprobes post_kprobe_handler(struct pt_regs *regs)
 	return 1;
 }
 
-static int __kprobes kprobe_fault_handler(struct pt_regs *regs, int trapnr)
+int __kprobes kprobe_fault_handler(struct pt_regs *regs, int trapnr)
 {
 	struct kprobe *cur = kprobe_running();
 
@@ -216,11 +216,6 @@ int __kprobes kprobe_exceptions_notify(struct notifier_block *self,
 		if (post_kprobe_handler(args->regs))
 			ret = NOTIFY_STOP;
 		break;
-	case DIE_FAULT:
-		if (kprobe_running()
-		    && kprobe_fault_handler(args->regs, args->trapnr))
-			ret = NOTIFY_STOP;
-		break;
 	default:
 		break;
 	}

arch/avr32/kernel/syscall_table.S

@@ -292,4 +292,7 @@ sys_call_table:
 	.long	sys_shmdt
 	.long	sys_shmctl
 	.long	sys_utimensat
+	.long	sys_signalfd
+	.long	sys_timerfd		/* 280 */
+	.long	sys_eventfd
 	.long	sys_ni_syscall		/* r8 is saturated at nr_syscalls */

arch/avr32/mach-at32ap/at32ap7000.c

@@ -6,6 +6,7 @@
  * published by the Free Software Foundation.
  */
 #include <linux/clk.h>
+#include <linux/fb.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
 #include <linux/spi/spi.h>
@@ -17,6 +18,8 @@
 #include <asm/arch/portmux.h>
 #include <asm/arch/sm.h>
 
+#include <video/atmel_lcdc.h>
+
 #include "clock.h"
 #include "hmatrix.h"
 #include "pio.h"
@@ -881,20 +884,26 @@ at32_add_device_spi(unsigned int id, struct spi_board_info *b, unsigned int n)
 /* --------------------------------------------------------------------
  *  LCDC
  * -------------------------------------------------------------------- */
-static struct lcdc_platform_data lcdc0_data;
-static struct resource lcdc0_resource[] = {
+static struct atmel_lcdfb_info atmel_lcdfb0_data;
+static struct resource atmel_lcdfb0_resource[] = {
 	{
 		.start		= 0xff000000,
 		.end		= 0xff000fff,
 		.flags		= IORESOURCE_MEM,
 	},
 	IRQ(1),
+	{
+		/* Placeholder for pre-allocated fb memory */
+		.start		= 0x00000000,
+		.end		= 0x00000000,
+		.flags		= 0,
+	},
 };
-DEFINE_DEV_DATA(lcdc, 0);
-DEV_CLK(hclk, lcdc0, hsb, 7);
-static struct clk lcdc0_pixclk = {
-	.name		= "pixclk",
-	.dev		= &lcdc0_device.dev,
+DEFINE_DEV_DATA(atmel_lcdfb, 0);
+DEV_CLK(hck1, atmel_lcdfb0, hsb, 7);
+static struct clk atmel_lcdfb0_pixclk = {
+	.name		= "lcdc_clk",
+	.dev		= &atmel_lcdfb0_device.dev,
 	.mode		= genclk_mode,
 	.get_rate	= genclk_get_rate,
 	.set_rate	= genclk_set_rate,
@@ -903,13 +912,34 @@ static struct clk lcdc0_pixclk = {
 };
 
 struct platform_device *__init
-at32_add_device_lcdc(unsigned int id, struct lcdc_platform_data *data)
+at32_add_device_lcdc(unsigned int id, struct atmel_lcdfb_info *data,
+		     unsigned long fbmem_start, unsigned long fbmem_len)
 {
 	struct platform_device *pdev;
+	struct atmel_lcdfb_info *info;
+	struct fb_monspecs *monspecs;
+	struct fb_videomode *modedb;
+	unsigned int modedb_size;
+
+	/*
+	 * Do a deep copy of the fb data, monspecs and modedb. Make
+	 * sure all allocations are done before setting up the
+	 * portmux.
+	 */
+	monspecs = kmemdup(data->default_monspecs,
+			   sizeof(struct fb_monspecs), GFP_KERNEL);
+	if (!monspecs)
+		return NULL;
+
+	modedb_size = sizeof(struct fb_videomode) * monspecs->modedb_len;
+	modedb = kmemdup(monspecs->modedb, modedb_size, GFP_KERNEL);
+	if (!modedb)
+		goto err_dup_modedb;
+	monspecs->modedb = modedb;
 
 	switch (id) {
 	case 0:
-		pdev = &lcdc0_device;
+		pdev = &atmel_lcdfb0_device;
 		select_peripheral(PC(19), PERIPH_A, 0);	/* CC	  */
 		select_peripheral(PC(20), PERIPH_A, 0);	/* HSYNC  */
 		select_peripheral(PC(21), PERIPH_A, 0);	/* PCLK	  */
@@ -942,19 +972,32 @@ at32_add_device_lcdc(unsigned int id, struct lcdc_platform_data *data)
 		select_peripheral(PD(16), PERIPH_A, 0);	/* DATA22 */
 		select_peripheral(PD(17), PERIPH_A, 0);	/* DATA23 */
 
-		clk_set_parent(&lcdc0_pixclk, &pll0);
-		clk_set_rate(&lcdc0_pixclk, clk_get_rate(&pll0));
+		clk_set_parent(&atmel_lcdfb0_pixclk, &pll0);
+		clk_set_rate(&atmel_lcdfb0_pixclk, clk_get_rate(&pll0));
 		break;
 
 	default:
-		return NULL;
+		goto err_invalid_id;
 	}
 
-	memcpy(pdev->dev.platform_data, data,
-	       sizeof(struct lcdc_platform_data));
+	if (fbmem_len) {
+		pdev->resource[2].start = fbmem_start;
+		pdev->resource[2].end = fbmem_start + fbmem_len - 1;
+		pdev->resource[2].flags = IORESOURCE_MEM;
+	}
+
+	info = pdev->dev.platform_data;
+	memcpy(info, data, sizeof(struct atmel_lcdfb_info));
+	info->default_monspecs = monspecs;
 
 	platform_device_register(pdev);
 	return pdev;
+
+err_invalid_id:
+	kfree(modedb);
+err_dup_modedb:
+	kfree(monspecs);
+	return NULL;
 }
 
 /* --------------------------------------------------------------------
@@ -1037,8 +1080,8 @@ struct clk *at32_clock_list[] = {
 	&macb1_pclk,
 	&atmel_spi0_spi_clk,
 	&atmel_spi1_spi_clk,
-	&lcdc0_hclk,
-	&lcdc0_pixclk,
+	&atmel_lcdfb0_hck1,
+	&atmel_lcdfb0_pixclk,
 	&gclk0,
 	&gclk1,
 	&gclk2,
@@ -1077,7 +1120,7 @@ void __init at32_clock_init(void)
 	genclk_init_parent(&gclk2);
 	genclk_init_parent(&gclk3);
 	genclk_init_parent(&gclk4);
-	genclk_init_parent(&lcdc0_pixclk);
+	genclk_init_parent(&atmel_lcdfb0_pixclk);
 
 	/*
 	 * Turn on all clocks that have at least one user already, and

arch/avr32/mm/fault.c

@@ -12,41 +12,30 @@
 #include <linux/mm.h>
 #include <linux/module.h>
 #include <linux/pagemap.h>
-
 #include <linux/kdebug.h>
+#include <linux/kprobes.h>
+
 #include <asm/mmu_context.h>
 #include <asm/sysreg.h>
 #include <asm/tlb.h>
 #include <asm/uaccess.h>
 
 #ifdef CONFIG_KPROBES
-ATOMIC_NOTIFIER_HEAD(notify_page_fault_chain);
-
-/* Hook to register for page fault notifications */
-int register_page_fault_notifier(struct notifier_block *nb)
+static inline int notify_page_fault(struct pt_regs *regs, int trap)
 {
-	return atomic_notifier_chain_register(&notify_page_fault_chain, nb);
-}
+	int ret = 0;
 
-int unregister_page_fault_notifier(struct notifier_block *nb)
-{
-	return atomic_notifier_chain_unregister(&notify_page_fault_chain, nb);
-}
+	if (!user_mode(regs)) {
+		if (kprobe_running() && kprobe_fault_handler(regs, trap))
+			ret = 1;
+	}
 
-static inline int notify_page_fault(enum die_val val, struct pt_regs *regs,
-				    int trap, int sig)
-{
-	struct die_args args = {
-		.regs = regs,
-		.trapnr = trap,
-	};
-	return atomic_notifier_call_chain(&notify_page_fault_chain, val, &args);
+	return ret;
 }
 #else
-static inline int notify_page_fault(enum die_val val, struct pt_regs *regs,
-				    int trap, int sig)
+static inline int notify_page_fault(struct pt_regs *regs, int trap)
 {
-	return NOTIFY_DONE;
+	return 0;
 }
 #endif
 
@@ -76,8 +65,7 @@ asmlinkage void do_page_fault(unsigned long ecr, struct pt_regs *regs)
 	long signr;
 	int code;
 
-	if (notify_page_fault(DIE_PAGE_FAULT, regs,
-			      ecr, SIGSEGV) == NOTIFY_STOP)
+	if (notify_page_fault(regs, ecr))
 		return;
 
 	address = sysreg_read(TLBEAR);

arch/ia64/kernel/acpi.c

@@ -791,7 +791,7 @@ static __init int setup_additional_cpus(char *s)
 early_param("additional_cpus", setup_additional_cpus);
 
 /*
- * cpu_possible_map should be static, it cannot change as cpu's
+ * cpu_possible_map should be static, it cannot change as CPUs
  * are onlined, or offlined. The reason is per-cpu data-structures
  * are allocated by some modules at init time, and dont expect to
  * do this dynamically on cpu arrival/departure.

arch/ia64/kernel/crash.c

@@ -156,24 +156,30 @@ kdump_init_notifier(struct notifier_block *self, unsigned long val, void *data)
 	if (!kdump_on_init)
 		return NOTIFY_DONE;
 
-	if (val != DIE_INIT_MONARCH_ENTER &&
-	    val != DIE_INIT_SLAVE_ENTER &&
+	if (val != DIE_INIT_MONARCH_LEAVE &&
+	    val != DIE_INIT_SLAVE_LEAVE &&
+	    val != DIE_INIT_MONARCH_PROCESS &&
 	    val != DIE_MCA_RENDZVOUS_LEAVE &&
 	    val != DIE_MCA_MONARCH_LEAVE)
 		return NOTIFY_DONE;
 
 	nd = (struct ia64_mca_notify_die *)args->err;
-	/* Reason code 1 means machine check rendezous*/
-	if ((val == DIE_INIT_MONARCH_ENTER || val == DIE_INIT_SLAVE_ENTER) &&
-		 nd->sos->rv_rc == 1)
+	/* Reason code 1 means machine check rendezvous*/
+	if ((val == DIE_INIT_MONARCH_LEAVE || val == DIE_INIT_SLAVE_LEAVE
+	    || val == DIE_INIT_MONARCH_PROCESS) && nd->sos->rv_rc == 1)
 		return NOTIFY_DONE;
 
 	switch (val) {
-		case DIE_INIT_MONARCH_ENTER:
+		case DIE_INIT_MONARCH_PROCESS:
+			atomic_set(&kdump_in_progress, 1);
+			*(nd->monarch_cpu) = -1;
+			break;
+		case DIE_INIT_MONARCH_LEAVE:
 			machine_kdump_on_init();
 			break;
-		case DIE_INIT_SLAVE_ENTER:
-			unw_init_running(kdump_cpu_freeze, NULL);
+		case DIE_INIT_SLAVE_LEAVE:
+			if (atomic_read(&kdump_in_progress))
+				unw_init_running(kdump_cpu_freeze, NULL);
 			break;
 		case DIE_MCA_RENDZVOUS_LEAVE:
 			if (atomic_read(&kdump_in_progress))
@@ -215,8 +221,10 @@ static ctl_table sys_table[] = {
 static int
 machine_crash_setup(void)
 {
+	/* be notified before default_monarch_init_process */
 	static struct notifier_block kdump_init_notifier_nb = {
 		.notifier_call = kdump_init_notifier,
+		.priority = 1,
 	};
 	int ret;
 	if((ret = register_die_notifier(&kdump_init_notifier_nb)) != 0)

arch/ia64/kernel/entry.S

@@ -1585,5 +1585,8 @@ sys_call_table:
 	data8 sys_getcpu
 	data8 sys_epoll_pwait			// 1305
 	data8 sys_utimensat
+	data8 sys_signalfd
+	data8 sys_timerfd
+	data8 sys_eventfd
 
 	.org sys_call_table + 8*NR_syscalls	// guard against failures to increase NR_syscalls

arch/ia64/kernel/irq.c

@@ -4,7 +4,7 @@
  *	Copyright (C) 1992, 1998 Linus Torvalds, Ingo Molnar
  *
  * This file contains the code used by various IRQ handling routines:
- * asking for different IRQ's should be done through these routines
+ * asking for different IRQs should be done through these routines
  * instead of just grabbing them. Thus setups with different IRQ numbers
  * shouldn't result in any weird surprises, and installing new handlers
  * should be easier.
@@ -12,7 +12,7 @@
  * Copyright (C) Ashok Raj<ashok.raj@intel.com>, Intel Corporation 2004
  *
  * 4/14/2004: Added code to handle cpu migration and do safe irq
- *			migration without lossing interrupts for iosapic
+ *			migration without losing interrupts for iosapic
  *			architecture.
  */
 
@@ -190,7 +190,7 @@ void fixup_irqs(void)
 	}
 
 	/*
-	 * Phase 1: Locate irq's bound to this cpu and
+	 * Phase 1: Locate IRQs bound to this cpu and
 	 * relocate them for cpu removal.
 	 */
 	migrate_irqs();

arch/ia64/kernel/irq_lsapic.c

@@ -23,7 +23,7 @@ lsapic_noop_startup (unsigned int irq)
 static void
 lsapic_noop (unsigned int irq)
 {
-	/* nuthing to do... */
+	/* nothing to do... */
 }
 
 static int lsapic_retrigger(unsigned int irq)

arch/ia64/kernel/kprobes.c

@@ -151,12 +151,12 @@ static uint __kprobes is_cmp_ctype_unc_inst(uint template, uint slot,
 
 	cmp_inst.l = kprobe_inst;
 	if ((cmp_inst.f.x2 == 0) || (cmp_inst.f.x2 == 1)) {
-		/* Integere compare - Register Register (A6 type)*/
+		/* Integer compare - Register Register (A6 type)*/
 		if ((cmp_inst.f.tb == 0) && (cmp_inst.f.ta == 0)
 				&&(cmp_inst.f.c == 1))
 			ctype_unc = 1;
 	} else if ((cmp_inst.f.x2 == 2)||(cmp_inst.f.x2 == 3)) {
-		/* Integere compare - Immediate Register (A8 type)*/
+		/* Integer compare - Immediate Register (A8 type)*/
 		if ((cmp_inst.f.ta == 0) &&(cmp_inst.f.c == 1))
 			ctype_unc = 1;
 	}
@@ -820,7 +820,7 @@ out:
 	return 1;
 }
 
-static int __kprobes kprobes_fault_handler(struct pt_regs *regs, int trapnr)
+int __kprobes kprobes_fault_handler(struct pt_regs *regs, int trapnr)
 {
 	struct kprobe *cur = kprobe_running();
 	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
@@ -904,13 +904,6 @@ int __kprobes kprobe_exceptions_notify(struct notifier_block *self,
 			if (post_kprobes_handler(args->regs))
 				ret = NOTIFY_STOP;
 		break;
-	case DIE_PAGE_FAULT:
-		/* kprobe_running() needs smp_processor_id() */
-		preempt_disable();
-		if (kprobe_running() &&
-			kprobes_fault_handler(args->regs, args->trapnr))
-			ret = NOTIFY_STOP;
-		preempt_enable();
 	default:
 		break;
 	}
@@ -954,7 +947,7 @@ int __kprobes setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs)
 	/*
 	 * Callee owns the argument space and could overwrite it, eg
 	 * tail call optimization. So to be absolutely safe
-	 * we save the argument space before transfering the control
+	 * we save the argument space before transferring the control
 	 * to instrumented jprobe function which runs in
 	 * the process context
 	 */

arch/ia64/kernel/mca.c

@@ -273,7 +273,6 @@ static void ia64_mlogbuf_finish(int wait)
 
 	mlogbuf_finished = 1;
 }
-EXPORT_SYMBOL(ia64_mlogbuf_finish);
 
 /*
  * Print buffered messages from INIT context.
@@ -1477,6 +1476,10 @@ default_monarch_init_process(struct notifier_block *self, unsigned long val, voi
 	struct task_struct *g, *t;
 	if (val != DIE_INIT_MONARCH_PROCESS)
 		return NOTIFY_DONE;
+#ifdef CONFIG_KEXEC
+	if (atomic_read(&kdump_in_progress))
+		return NOTIFY_DONE;
+#endif
 
 	/*
 	 * FIXME: mlogbuf will brim over with INIT stack dumps.

arch/ia64/kernel/mca_drv.c

@@ -438,7 +438,7 @@ is_mca_global(peidx_table_t *peidx, pal_bus_check_info_t *pbci,
  * @peidx:	pointer of index of processor error section
  *
  * Return value:
- *	target address on Success / 0 on Failue
+ *	target address on Success / 0 on Failure
  */
 static u64
 get_target_identifier(peidx_table_t *peidx)
@@ -701,7 +701,7 @@ recover_from_processor_error(int platform, slidx_table_t *slidx,
 		return fatal_mca("External bus check fatal status");
 
 	/*
-	 * This is a local MCA and estimated as a recoverble error.
+	 * This is a local MCA and estimated as a recoverable error.
 	 */
 	if (platform)
 		return recover_from_platform_error(slidx, peidx, pbci, sos);

arch/ia64/kernel/module.c

@@ -861,7 +861,7 @@ apply_relocate (Elf64_Shdr *sechdrs, const char *strtab, unsigned int symindex,
 /*
  * Modules contain a single unwind table which covers both the core and the init text
  * sections but since the two are not contiguous, we need to split this table up such that
- * we can register (and unregister) each "segment" seperately.  Fortunately, this sounds
+ * we can register (and unregister) each "segment" separately.  Fortunately, this sounds
  * more complicated than it really is.
  */
 static void

arch/ia64/kernel/perfmon.c

@@ -1318,7 +1318,7 @@ pfm_reserve_session(struct task_struct *task, int is_syswide, unsigned int cpu)
 {
 	unsigned long flags;
 	/*
-	 * validy checks on cpu_mask have been done upstream
+	 * validity checks on cpu_mask have been done upstream
 	 */
 	LOCK_PFS(flags);
 
@@ -1384,7 +1384,7 @@ pfm_unreserve_session(pfm_context_t *ctx, int is_syswide, unsigned int cpu)
 {
 	unsigned long flags;
 	/*
-	 * validy checks on cpu_mask have been done upstream
+	 * validity checks on cpu_mask have been done upstream
 	 */
 	LOCK_PFS(flags);
 
@@ -1835,7 +1835,7 @@ pfm_flush(struct file *filp, fl_owner_t id)
 	/*
 	 * remove our file from the async queue, if we use this mode.
 	 * This can be done without the context being protected. We come
-	 * here when the context has become unreacheable by other tasks.
+	 * here when the context has become unreachable by other tasks.
 	 *
 	 * We may still have active monitoring at this point and we may
 	 * end up in pfm_overflow_handler(). However, fasync_helper()
@@ -2132,7 +2132,7 @@ doit:
 	filp->private_data = NULL;
 
 	/*
-	 * if we free on the spot, the context is now completely unreacheable
+	 * if we free on the spot, the context is now completely unreachable
 	 * from the callers side. The monitored task side is also cut, so we
 	 * can freely cut.
 	 *
@@ -2562,7 +2562,7 @@ pfm_reset_pmu_state(pfm_context_t *ctx)
 	ctx->ctx_all_pmcs[0] = pmu_conf->impl_pmcs[0] & ~0x1;
 
 	/*
-	 * bitmask of all PMDs that are accesible to this context
+	 * bitmask of all PMDs that are accessible to this context
 	 */
 	ctx->ctx_all_pmds[0] = pmu_conf->impl_pmds[0];
 
@@ -3395,7 +3395,7 @@ pfm_read_pmds(pfm_context_t *ctx, void *arg, int count, struct pt_regs *regs)
 		if (unlikely(!PMD_IS_IMPL(cnum))) goto error;
 		/*
 		 * we can only read the register that we use. That includes
-		 * the one we explicitely initialize AND the one we want included
+		 * the one we explicitly initialize AND the one we want included
 		 * in the sampling buffer (smpl_regs).
 		 *
 		 * Having this restriction allows optimization in the ctxsw routine
@@ -3715,7 +3715,7 @@ pfm_restart(pfm_context_t *ctx, void *arg, int count, struct pt_regs *regs)
 	 * if non-blocking, then we ensure that the task will go into
 	 * pfm_handle_work() before returning to user mode.
 	 *
-	 * We cannot explicitely reset another task, it MUST always
+	 * We cannot explicitly reset another task, it MUST always
 	 * be done by the task itself. This works for system wide because
 	 * the tool that is controlling the session is logically doing 
 	 * "self-monitoring".
@@ -4644,7 +4644,7 @@ pfm_exit_thread(struct task_struct *task)
 	switch(state) {
 		case PFM_CTX_UNLOADED:
 			/*
-	 		 * only comes to thios function if pfm_context is not NULL, i.e., cannot
+	 		 * only comes to this function if pfm_context is not NULL, i.e., cannot
 			 * be in unloaded state
 	 		 */
 			printk(KERN_ERR "perfmon: pfm_exit_thread [%d] ctx unloaded\n", task->pid);
@@ -5247,7 +5247,7 @@ pfm_end_notify_user(pfm_context_t *ctx)
 
 /*
  * main overflow processing routine.
- * it can be called from the interrupt path or explicitely during the context switch code
+ * it can be called from the interrupt path or explicitly during the context switch code
  */
 static void
 pfm_overflow_handler(struct task_struct *task, pfm_context_t *ctx, u64 pmc0, struct pt_regs *regs)

arch/ia64/kernel/perfmon_mckinley.h

@@ -181,7 +181,7 @@ static pmu_config_t pmu_conf_mck={
 	.pmc_desc      = pfm_mck_pmc_desc,
 	.num_ibrs       = 8,
 	.num_dbrs       = 8,
-	.use_rr_dbregs = 1 /* debug register are use for range retrictions */
+	.use_rr_dbregs = 1 /* debug register are use for range restrictions */
 };
 
 

arch/ia64/kernel/sal.c

@@ -134,7 +134,7 @@ set_smp_redirect (int flag)
 	 * interrupt redirection. The reason is this would require that
 	 * All interrupts be stopped and hard bind the irq to a cpu.
 	 * Later when the interrupt is fired we need to set the redir hint
-	 * on again in the vector. This is combersome for something that the
+	 * on again in the vector. This is cumbersome for something that the
 	 * user mode irq balancer will solve anyways.
 	 */
 	no_int_routing=1;