---

yaml
---
r: 107145
b: refs/heads/master
c: 660fc1f
h: refs/heads/master
i:
  107143: a13dd3f
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ce0ad7f0952581ba75ab6aee55bb1ed9bb22cf4f
+refs/heads/master: 660fc1f4d88b0f5e4bb936e4a5a9b95b70df9e58

trunk/Documentation/rfkill.txt

@@ -390,9 +390,10 @@ rfkill lines are inactive, it must return RFKILL_STATE_SOFT_BLOCKED if its soft
 rfkill input line is active.  Only if none of the rfkill input lines are
 active, will it return RFKILL_STATE_UNBLOCKED.
 
-If it doesn't implement the get_state() hook, it must make sure that its calls
-to rfkill_force_state() are enough to keep the status always up-to-date, and it
-must do a rfkill_force_state() on resume from sleep.
+Since the device has a hardware rfkill line, it IS subject to state changes
+external to rfkill.  Therefore, the driver must make sure that it calls
+rfkill_force_state() to keep the status always up-to-date, and it must do a
+rfkill_force_state() on resume from sleep.
 
 Every time the driver gets a notification from the card that one of its rfkill
 lines changed state (polling might be needed on badly designed cards that don't
@@ -422,13 +423,24 @@ of the hardware is unknown), or read-write (where the hardware can be queried
 about its current state).
 
 The rfkill class will call the get_state hook of a device every time it needs
-to know the *real* current state of the hardware.  This can happen often.
+to know the *real* current state of the hardware.  This can happen often, but
+it does not do any polling, so it is not enough on hardware that is subject
+to state changes outside of the rfkill subsystem.
+
+Therefore, calling rfkill_force_state() when a state change happens is
+mandatory when the device has a hardware rfkill line, or when something else
+like the firmware could cause its state to be changed without going through the
+rfkill class.
 
 Some hardware provides events when its status changes.  In these cases, it is
 best for the driver to not provide a get_state hook, and instead register the
 rfkill class *already* with the correct status, and keep it updated using
 rfkill_force_state() when it gets an event from the hardware.
 
+rfkill_force_state() must be used on the device resume handlers to update the
+rfkill status, should there be any chance of the device status changing during
+the sleep.
+
 There is no provision for a statically-allocated rfkill struct.  You must
 use rfkill_allocate() to allocate one.
 

trunk/arch/ia64/mm/hugetlbpage.c

@@ -13,6 +13,7 @@
 #include <linux/mm.h>
 #include <linux/hugetlb.h>
 #include <linux/pagemap.h>
+#include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/sysctl.h>
 #include <linux/log2.h>
@@ -21,7 +22,8 @@
 #include <asm/tlb.h>
 #include <asm/tlbflush.h>
 
-unsigned int hpage_shift=HPAGE_SHIFT_DEFAULT;
+unsigned int hpage_shift = HPAGE_SHIFT_DEFAULT;
+EXPORT_SYMBOL(hpage_shift);
 
 pte_t *
 huge_pte_alloc(struct mm_struct *mm, unsigned long addr, unsigned long sz)

trunk/arch/powerpc/platforms/cell/cbe_cpufreq_pmi.c

@@ -96,6 +96,12 @@ static int pmi_notifier(struct notifier_block *nb,
 	struct cpufreq_frequency_table *cbe_freqs;
 	u8 node;
 
+	/* Should this really be called for CPUFREQ_ADJUST, CPUFREQ_INCOMPATIBLE
+	 * and CPUFREQ_NOTIFY policy events?)
+	 */
+	if (event == CPUFREQ_START)
+		return 0;
+
 	cbe_freqs = cpufreq_frequency_get_table(policy->cpu);
 	node = cbe_cpu_to_node(policy->cpu);
 

trunk/arch/um/drivers/line.c

@@ -362,19 +362,7 @@ static irqreturn_t line_write_interrupt(int irq, void *data)
 	if (tty == NULL)
 		return IRQ_NONE;
 
-	if (test_bit(TTY_DO_WRITE_WAKEUP, &tty->flags) &&
-	   (tty->ldisc.write_wakeup != NULL))
-		(tty->ldisc.write_wakeup)(tty);
-
-	/*
-	 * BLOCKING mode
-	 * In blocking mode, everything sleeps on tty->write_wait.
-	 * Sleeping in the console driver would break non-blocking
-	 * writes.
-	 */
-
-	if (waitqueue_active(&tty->write_wait))
-		wake_up_interruptible(&tty->write_wait);
+	tty_wakeup(tty);
 	return IRQ_HANDLED;
 }
 

trunk/arch/x86/kernel/genapic_64.c

@@ -99,3 +99,4 @@ int is_uv_system(void)
 {
 	return uv_system_type != UV_NONE;
 }
+EXPORT_SYMBOL_GPL(is_uv_system);

trunk/arch/x86/lib/copy_user_64.S

@@ -52,7 +52,7 @@
 	jnz 100b
 102:
 	.section .fixup,"ax"
-103:	addl %r8d,%edx			/* ecx is zerorest also */
+103:	addl %ecx,%edx			/* ecx is zerorest also */
 	jmp copy_user_handle_tail
 	.previous
 

trunk/arch/x86/lib/copy_user_nocache_64.S

@@ -32,7 +32,7 @@
 	jnz 100b
 102:
 	.section .fixup,"ax"
-103:	addl %r8d,%edx			/* ecx is zerorest also */
+103:	addl %ecx,%edx			/* ecx is zerorest also */
 	jmp copy_user_handle_tail
 	.previous
 
@@ -108,7 +108,6 @@ ENTRY(__copy_user_nocache)
 	jmp 60f
 50:	movl %ecx,%edx
 60:	sfence
-	movl %r8d,%ecx
 	jmp copy_user_handle_tail
 	.previous
 

trunk/drivers/acpi/processor_perflib.c

@@ -64,15 +64,21 @@ static DEFINE_MUTEX(performance_mutex);
  * policy is adjusted accordingly.
  */
 
-static unsigned int ignore_ppc = 0;
+/* ignore_ppc:
+ * -1 -> cpufreq low level drivers not initialized -> _PSS, etc. not called yet
+ *       ignore _PPC
+ *  0 -> cpufreq low level drivers initialized -> consider _PPC values
+ *  1 -> ignore _PPC totally -> forced by user through boot param
+ */
+static unsigned int ignore_ppc = -1;
 module_param(ignore_ppc, uint, 0644);
 MODULE_PARM_DESC(ignore_ppc, "If the frequency of your machine gets wrongly" \
 		 "limited by BIOS, this should help");
 
 #define PPC_REGISTERED   1
 #define PPC_IN_USE       2
 
-static int acpi_processor_ppc_status = 0;
+static int acpi_processor_ppc_status;
 
 static int acpi_processor_ppc_notifier(struct notifier_block *nb,
 				       unsigned long event, void *data)
@@ -81,13 +87,18 @@ static int acpi_processor_ppc_notifier(struct notifier_block *nb,
 	struct acpi_processor *pr;
 	unsigned int ppc = 0;
 
-	if (ignore_ppc)
+	if (event == CPUFREQ_START && ignore_ppc <= 0) {
+		ignore_ppc = 0;
 		return 0;
+	}
 
-	mutex_lock(&performance_mutex);
+	if (ignore_ppc)
+		return 0;
 
 	if (event != CPUFREQ_INCOMPATIBLE)
-		goto out;
+		return 0;
+
+	mutex_lock(&performance_mutex);
 
 	pr = per_cpu(processors, policy->cpu);
 	if (!pr || !pr->performance)

trunk/drivers/char/mxser.c

@@ -1612,8 +1612,10 @@ static int mxser_ioctl_special(unsigned int cmd, void __user *argp)
 
 	switch (cmd) {
 	case MOXA_GET_MAJOR:
-		printk(KERN_WARNING "mxser: '%s' uses deprecated ioctl %x, fix "
-				"your userspace\n", current->comm, cmd);
+		if (printk_ratelimit())
+			printk(KERN_WARNING "mxser: '%s' uses deprecated ioctl "
+					"%x (GET_MAJOR), fix your userspace\n",
+					current->comm, cmd);
 		return put_user(ttymajor, (int __user *)argp);
 
 	case MOXA_CHKPORTENABLE:

trunk/drivers/cpufreq/cpufreq.c

@@ -825,6 +825,9 @@ static int cpufreq_add_dev(struct sys_device *sys_dev)
 	policy->user_policy.min = policy->cpuinfo.min_freq;
 	policy->user_policy.max = policy->cpuinfo.max_freq;
 
+	blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
+				     CPUFREQ_START, policy);
+
 #ifdef CONFIG_SMP
 
 #ifdef CONFIG_HOTPLUG_CPU

trunk/drivers/firmware/iscsi_ibft_find.c

@@ -81,4 +81,3 @@ void __init reserve_ibft_region(void)
 	if (ibft_addr)
 		reserve_bootmem(pos, PAGE_ALIGN(len), BOOTMEM_DEFAULT);
 }
-EXPORT_SYMBOL_GPL(reserve_ibft_region);

trunk/drivers/misc/Kconfig

@@ -426,7 +426,7 @@ config ENCLOSURE_SERVICES
 
 config SGI_XP
 	tristate "Support communication between SGI SSIs"
-	depends on IA64_GENERIC || IA64_SGI_SN2
+	depends on IA64_GENERIC || IA64_SGI_SN2 || IA64_SGI_UV || (X86_64 && SMP)
 	select IA64_UNCACHED_ALLOCATOR if IA64_GENERIC || IA64_SGI_SN2
 	select GENERIC_ALLOCATOR if IA64_GENERIC || IA64_SGI_SN2
 	---help---
@@ -450,4 +450,27 @@ config HP_ILO
 	  To compile this driver as a module, choose M here: the
 	  module will be called hpilo.
 
+config SGI_GRU
+	tristate "SGI GRU driver"
+	depends on (X86_64 || IA64_SGI_UV || IA64_GENERIC) && SMP
+	default n
+	select MMU_NOTIFIER
+	---help---
+	The GRU is a hardware resource located in the system chipset. The GRU
+	contains memory that can be mmapped into the user address space. This memory is
+	used to communicate with the GRU to perform functions such as load/store,
+	scatter/gather, bcopy, AMOs, etc.  The GRU is directly accessed by user
+	instructions using user virtual addresses. GRU instructions (ex., bcopy) use
+	user virtual addresses for operands.
+
+	If you are not running on a SGI UV system, say N.
+
+config SGI_GRU_DEBUG
+	bool  "SGI GRU driver debug"
+	depends on SGI_GRU
+	default n
+	---help---
+	This option enables addition debugging code for the SGI GRU driver. If
+	you are unsure, say N.
+
 endif # MISC_DEVICES

trunk/drivers/misc/Makefile

@@ -28,4 +28,5 @@ obj-$(CONFIG_INTEL_MENLOW)	+= intel_menlow.o
 obj-$(CONFIG_ENCLOSURE_SERVICES) += enclosure.o
 obj-$(CONFIG_KGDB_TESTS)	+= kgdbts.o
 obj-$(CONFIG_SGI_XP)		+= sgi-xp/
+obj-$(CONFIG_SGI_GRU)		+= sgi-gru/
 obj-$(CONFIG_HP_ILO)		+= hpilo.o

trunk/drivers/misc/sgi-gru/Makefile

@@ -0,0 +1,3 @@
+obj-$(CONFIG_SGI_GRU) := gru.o
+gru-y := grufile.o grumain.o grufault.o grutlbpurge.o gruprocfs.o grukservices.o
+

trunk/drivers/misc/sgi-gru/gru.h

@@ -0,0 +1,67 @@
+/*
+ *  Copyright (c) 2008 Silicon Graphics, Inc.  All Rights Reserved.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU Lesser General Public License as published by
+ *  the Free Software Foundation; either version 2.1 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+
+#ifndef __GRU_H__
+#define __GRU_H__
+
+/*
+ * GRU architectural definitions
+ */
+#define GRU_CACHE_LINE_BYTES		64
+#define GRU_HANDLE_STRIDE		256
+#define GRU_CB_BASE			0
+#define GRU_DS_BASE			0x20000
+
+/*
+ * Size used to map GRU GSeg
+ */
+#if defined CONFIG_IA64
+#define GRU_GSEG_PAGESIZE	(256 * 1024UL)
+#elif defined CONFIG_X86_64
+#define GRU_GSEG_PAGESIZE	(256 * 1024UL)		/* ZZZ 2MB ??? */
+#else
+#error "Unsupported architecture"
+#endif
+
+/*
+ * Structure for obtaining GRU resource information
+ */
+struct gru_chiplet_info {
+	int	node;
+	int	chiplet;
+	int	blade;
+	int	total_dsr_bytes;
+	int	total_cbr;
+	int	total_user_dsr_bytes;
+	int	total_user_cbr;
+	int	free_user_dsr_bytes;
+	int	free_user_cbr;
+};
+
+/* Flags for GRU options on the gru_create_context() call */
+/* Select one of the follow 4 options to specify how TLB misses are handled */
+#define GRU_OPT_MISS_DEFAULT	0x0000	/* Use default mode */
+#define GRU_OPT_MISS_USER_POLL	0x0001	/* User will poll CB for faults */
+#define GRU_OPT_MISS_FMM_INTR	0x0002	/* Send interrupt to cpu to
+					   handle fault */
+#define GRU_OPT_MISS_FMM_POLL	0x0003	/* Use system polling thread */
+#define GRU_OPT_MISS_MASK	0x0003	/* Mask for TLB MISS option */
+
+
+
+#endif		/* __GRU_H__ */