From 8e552c36d90c03d2cabf5373788998966751b609 Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Mon, 12 May 2008 21:46:29 -0400 Subject: power_supply: add CHARGE_COUNTER property and olpc_battery support for it This adds PROP_CHARGE_COUNTER to the power supply class (documenting it as well). The OLPC battery driver uses this for spitting out its ACR values (in uAh). We have some rounding errors (the data sheet claims 416.7, the math actually works out to 416.666667, so we're forced to choose between overflows or precision loss. I chose precision loss, and stuck w/ data sheet values), but I don't think anyone will care that much. Signed-off-by: Andres Salomon Signed-off-by: Anton Vorontsov --- include/linux/power_supply.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index 68ed19ccf1f7..ea96ead1d39d 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -78,6 +78,7 @@ enum power_supply_property { POWER_SUPPLY_PROP_CHARGE_EMPTY, POWER_SUPPLY_PROP_CHARGE_NOW, POWER_SUPPLY_PROP_CHARGE_AVG, + POWER_SUPPLY_PROP_CHARGE_COUNTER, POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN, POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN, POWER_SUPPLY_PROP_ENERGY_FULL, -- cgit v1.2.3 From d8e64406a037a64444175730294e449c9e21f5ec Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Wed, 23 Jul 2008 13:09:48 -0700 Subject: md: delay notification of 'active_idle' to the recovery thread sysfs_notify might sleep, so do not call it from md_safemode_timeout. Signed-off-by: Dan Williams --- include/linux/raid/md_k.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h index 9f2549ac0e2d..c200b9a34aff 100644 --- a/include/linux/raid/md_k.h +++ b/include/linux/raid/md_k.h @@ -128,6 +128,7 @@ struct mddev_s #define MD_CHANGE_DEVS 0 /* Some device status has changed */ #define MD_CHANGE_CLEAN 1 /* transition to or from 'clean' */ #define MD_CHANGE_PENDING 2 /* superblock update in progress */ +#define MD_NOTIFY_ARRAY_STATE 3 /* atomic context wants to notify userspace */ int ro; -- cgit v1.2.3 From 9403540c0653122ca34884a180439ddbfcbcb524 Mon Sep 17 00:00:00 2001 From: Barry Naujok Date: Wed, 21 May 2008 16:50:46 +1000 Subject: dcache: Add case-insensitive support d_ci_add() routine This add a dcache entry to the dcache for lookup, but changing the name that is associated with the entry rather than the one passed in to the lookup routine. First, it sees if the case-exact match already exists in the dcache and uses it if one exists. Otherwise, it allocates a new node with the new name and splices it into the dcache. Original code from ntfs_lookup in fs/ntfs/namei.c by Anton Altaparmakov. Signed-off-by: Barry Naujok Signed-off-by: Anton Altaparmakov Acked-by: Christoph Hellwig --- include/linux/dcache.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index 98202c672fde..07aa198f19ed 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -230,6 +230,7 @@ extern void d_delete(struct dentry *); extern struct dentry * d_alloc(struct dentry *, const struct qstr *); extern struct dentry * d_alloc_anon(struct inode *); extern struct dentry * d_splice_alias(struct inode *, struct dentry *); +extern struct dentry * d_add_ci(struct inode *, struct dentry *, struct qstr *); extern void shrink_dcache_sb(struct super_block *); extern void shrink_dcache_parent(struct dentry *); extern void shrink_dcache_for_umount(struct super_block *); -- cgit v1.2.3 From e930bffe95e1e886a1ede80726ea38df5838d067 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Fri, 25 Jul 2008 16:24:52 +0200 Subject: KVM: Synchronize guest physical memory map to host virtual memory map Synchronize changes to host virtual addresses which are part of a KVM memory slot to the KVM shadow mmu. This allows pte operations like swapping, page migration, and madvise() to transparently work with KVM. Signed-off-by: Andrea Arcangeli Signed-off-by: Avi Kivity --- include/linux/kvm_host.h | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 07d68a8ae8e9..8525afc53107 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -121,6 +121,12 @@ struct kvm { struct kvm_coalesced_mmio_dev *coalesced_mmio_dev; struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; #endif + +#ifdef KVM_ARCH_WANT_MMU_NOTIFIER + struct mmu_notifier mmu_notifier; + unsigned long mmu_notifier_seq; + long mmu_notifier_count; +#endif }; /* The guest did something we don't support. */ @@ -332,4 +338,22 @@ int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg) #define kvm_trace_cleanup() ((void)0) #endif +#ifdef KVM_ARCH_WANT_MMU_NOTIFIER +static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq) +{ + if (unlikely(vcpu->kvm->mmu_notifier_count)) + return 1; + /* + * Both reads happen under the mmu_lock and both values are + * modified under mmu_lock, so there's no need of smb_rmb() + * here in between, otherwise mmu_notifier_count should be + * read before mmu_notifier_seq, see + * mmu_notifier_invalidate_range_end write side. + */ + if (vcpu->kvm->mmu_notifier_seq != mmu_seq) + return 1; + return 0; +} +#endif + #endif -- cgit v1.2.3 From ed8486243379ef3e6c61363df915882945c0eaec Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Tue, 29 Jul 2008 11:30:57 +0300 Subject: KVM: Advertise synchronized mmu support to userspace Signed-off-by: Avi Kivity --- include/linux/kvm.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/kvm.h b/include/linux/kvm.h index 0ea064cbfbc8..69511f74f912 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -371,6 +371,7 @@ struct kvm_trace_rec { #define KVM_CAP_PV_MMU 13 #define KVM_CAP_MP_STATE 14 #define KVM_CAP_COALESCED_MMIO 15 +#define KVM_CAP_SYNC_MMU 16 /* Changes to host mmap are reflected in guest */ /* * ioctls for VM fds -- cgit v1.2.3 From 1795cf48b322b4d19230a40dbe7181acedd34a94 Mon Sep 17 00:00:00 2001 From: Adrian McMenamin Date: Tue, 29 Jul 2008 22:10:56 +0900 Subject: sh/maple: clean maple bus code This patch cleans up the handling of the maple bus queue to remove the risk of races when adding packets. It also removes references to the redundant connect and disconnect functions. Signed-off-by: Adrian McMenamin Signed-off-by: Paul Mundt --- include/linux/maple.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/maple.h b/include/linux/maple.h index 523a286bb477..c853b1066018 100644 --- a/include/linux/maple.h +++ b/include/linux/maple.h @@ -2,6 +2,7 @@ #define __LINUX_MAPLE_H #include +#include extern struct bus_type maple_bus_type; @@ -33,6 +34,7 @@ struct mapleq { void *sendbuf, *recvbuf, *recvbufdcsp; unsigned char length; enum maple_code command; + struct mutex mutex; }; struct maple_devinfo { @@ -69,7 +71,9 @@ void maple_getcond_callback(struct maple_device *dev, unsigned long interval, unsigned long function); int maple_driver_register(struct device_driver *drv); -void maple_add_packet(struct mapleq *mq); +int maple_add_packet_sleeps(struct maple_device *mdev, u32 function, + u32 command, u32 length, void *data); +void maple_clear_dev(struct maple_device *mdev); #define to_maple_dev(n) container_of(n, struct maple_device, dev) #define to_maple_driver(n) container_of(n, struct maple_driver, drv) -- cgit v1.2.3 From f1b23361a0f15497d4c6795a2935b2e98064ddfb Mon Sep 17 00:00:00 2001 From: Henrique de Moraes Holschuh Date: Mon, 21 Jul 2008 21:18:19 -0300 Subject: rfkill: document the rfkill struct locking (v2) Reorder fields in struct rfkill and add comments to make it clear which fields are protected by rfkill->mutex. Signed-off-by: Henrique de Moraes Holschuh Acked-by: Ivo van Doorn Signed-off-by: John W. Linville --- include/linux/rfkill.h | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rfkill.h b/include/linux/rfkill.h index c5f6e54ec6ae..741d1a62cc3f 100644 --- a/include/linux/rfkill.h +++ b/include/linux/rfkill.h @@ -68,7 +68,8 @@ enum rfkill_state { * @user_claim_unsupported: Whether the hardware supports exclusive * RF-kill control by userspace. Set this before registering. * @user_claim: Set when the switch is controlled exlusively by userspace. - * @mutex: Guards switch state transitions + * @mutex: Guards switch state transitions. It serializes callbacks + * and also protects the state. * @data: Pointer to the RF button drivers private data which will be * passed along when toggling radio state. * @toggle_radio(): Mandatory handler to control state of the radio. @@ -89,12 +90,13 @@ struct rfkill { const char *name; enum rfkill_type type; - enum rfkill_state state; bool user_claim_unsupported; bool user_claim; + /* the mutex serializes callbacks and also protects + * the state */ struct mutex mutex; - + enum rfkill_state state; void *data; int (*toggle_radio)(void *data, enum rfkill_state state); int (*get_state)(void *data, enum rfkill_state *state); -- cgit v1.2.3 From d0f09804144fd9471a13cf4d80e66842c7fa114f Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 29 Jul 2008 11:32:07 +0200 Subject: mac80211: partially fix skb->cb use This patch fixes mac80211 to not use the skb->cb over the queue step from virtual interfaces to the master. The patch also, for now, disables aggregation because that would still require requeuing, will fix that in a separate patch. There are two other places (software requeue and powersaving stations) where requeue can happen, but that is not currently used by any drivers/not possible to use respectively. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/linux/skbuff.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 7ea44f6621f2..a640385e0598 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -316,7 +316,10 @@ struct sk_buff { #ifdef CONFIG_IPV6_NDISC_NODETYPE __u8 ndisc_nodetype:2; #endif - /* 14 bit hole */ +#if defined(CONFIG_MAC80211) || defined(CONFIG_MAC80211_MODULE) + __u8 do_not_encrypt:1; +#endif + /* 0/13/14 bit hole */ #ifdef CONFIG_NET_DMA dma_cookie_t dma_cookie; -- cgit v1.2.3 From ce0ad7f0952581ba75ab6aee55bb1ed9bb22cf4f Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Wed, 30 Jul 2008 15:23:13 +1000 Subject: powerpc/mm: Lockless get_user_pages_fast() for 64-bit (v3) Implement lockless get_user_pages_fast for 64-bit powerpc. Page table existence is guaranteed with RCU, and speculative page references are used to take a reference to the pages without having a prior existence guarantee on them. Signed-off-by: Nick Piggin Signed-off-by: Dave Kleikamp Signed-off-by: Andrew Morton Signed-off-by: Benjamin Herrenschmidt --- include/linux/pagemap.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index a39b38ccdc97..69ed3cb1197a 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -143,6 +143,29 @@ static inline int page_cache_get_speculative(struct page *page) return 1; } +/* + * Same as above, but add instead of inc (could just be merged) + */ +static inline int page_cache_add_speculative(struct page *page, int count) +{ + VM_BUG_ON(in_interrupt()); + +#if !defined(CONFIG_SMP) && defined(CONFIG_CLASSIC_RCU) +# ifdef CONFIG_PREEMPT + VM_BUG_ON(!in_atomic()); +# endif + VM_BUG_ON(page_count(page) == 0); + atomic_add(count, &page->_count); + +#else + if (unlikely(!atomic_add_unless(&page->_count, count, 0))) + return 0; +#endif + VM_BUG_ON(PageCompound(page) && page != compound_head(page)); + + return 1; +} + static inline int page_freeze_refs(struct page *page, int count) { return likely(atomic_cmpxchg(&page->_count, count, 0) == count); -- cgit v1.2.3 From e2ce4eaa76214f65a3f328ec5b45c30248115768 Mon Sep 17 00:00:00 2001 From: Liam Girdwood Date: Wed, 30 Apr 2008 15:10:07 +0100 Subject: regulator: consumer device interface Add support to allow consumer device drivers to control their regulator power supply. This uses a similar API to the kernel clock interface in that consumer drivers can get and put a regulator (like they can with clocks atm) and get/set voltage, current limit, mode, enable and disable. This should allow consumers complete control over their supply voltage and current limit. This also compiles out if not in use so drivers can be reused in systems with no regulator based power control. Signed-off-by: Liam Girdwood Signed-off-by: Mark Brown --- include/linux/regulator/consumer.h | 284 +++++++++++++++++++++++++++++++++++++ 1 file changed, 284 insertions(+) create mode 100644 include/linux/regulator/consumer.h (limited to 'include/linux') diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h new file mode 100644 index 000000000000..afdc4558bb94 --- /dev/null +++ b/include/linux/regulator/consumer.h @@ -0,0 +1,284 @@ +/* + * consumer.h -- SoC Regulator consumer support. + * + * Copyright (C) 2007, 2008 Wolfson Microelectronics PLC. + * + * Author: Liam Girdwood + * + * 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. + * + * Regulator Consumer Interface. + * + * A Power Management Regulator framework for SoC based devices. + * Features:- + * o Voltage and current level control. + * o Operating mode control. + * o Regulator status. + * o sysfs entries for showing client devices and status + * + * EXPERIMENTAL FEATURES: + * Dynamic Regulator operating Mode Switching (DRMS) - allows regulators + * to use most efficient operating mode depending upon voltage and load and + * is transparent to client drivers. + * + * e.g. Devices x,y,z share regulator r. Device x and y draw 20mA each during + * IO and 1mA at idle. Device z draws 100mA when under load and 5mA when + * idling. Regulator r has > 90% efficiency in NORMAL mode at loads > 100mA + * but this drops rapidly to 60% when below 100mA. Regulator r has > 90% + * efficiency in IDLE mode at loads < 10mA. Thus regulator r will operate + * in normal mode for loads > 10mA and in IDLE mode for load <= 10mA. + * + */ + +#ifndef __LINUX_REGULATOR_CONSUMER_H_ +#define __LINUX_REGULATOR_CONSUMER_H_ + +/* + * Regulator operating modes. + * + * Regulators can run in a variety of different operating modes depending on + * output load. This allows further system power savings by selecting the + * best (and most efficient) regulator mode for a desired load. + * + * Most drivers will only care about NORMAL. The modes below are generic and + * will probably not match the naming convention of your regulator data sheet + * but should match the use cases in the datasheet. + * + * In order of power efficiency (least efficient at top). + * + * Mode Description + * FAST Regulator can handle fast changes in it's load. + * e.g. useful in CPU voltage & frequency scaling where + * load can quickly increase with CPU frequency increases. + * + * NORMAL Normal regulator power supply mode. Most drivers will + * use this mode. + * + * IDLE Regulator runs in a more efficient mode for light + * loads. Can be used for devices that have a low power + * requirement during periods of inactivity. This mode + * may be more noisy than NORMAL and may not be able + * to handle fast load switching. + * + * STANDBY Regulator runs in the most efficient mode for very + * light loads. Can be used by devices when they are + * in a sleep/standby state. This mode is likely to be + * the most noisy and may not be able to handle fast load + * switching. + * + * NOTE: Most regulators will only support a subset of these modes. Some + * will only just support NORMAL. + * + * These modes can be OR'ed together to make up a mask of valid register modes. + */ + +#define REGULATOR_MODE_FAST 0x1 +#define REGULATOR_MODE_NORMAL 0x2 +#define REGULATOR_MODE_IDLE 0x4 +#define REGULATOR_MODE_STANDBY 0x8 + +/* + * Regulator notifier events. + * + * UNDER_VOLTAGE Regulator output is under voltage. + * OVER_CURRENT Regulator output current is too high. + * REGULATION_OUT Regulator output is out of regulation. + * FAIL Regulator output has failed. + * OVER_TEMP Regulator over temp. + * FORCE_DISABLE Regulator shut down by software. + * + * NOTE: These events can be OR'ed together when passed into handler. + */ + +#define REGULATOR_EVENT_UNDER_VOLTAGE 0x01 +#define REGULATOR_EVENT_OVER_CURRENT 0x02 +#define REGULATOR_EVENT_REGULATION_OUT 0x04 +#define REGULATOR_EVENT_FAIL 0x08 +#define REGULATOR_EVENT_OVER_TEMP 0x10 +#define REGULATOR_EVENT_FORCE_DISABLE 0x20 + +struct regulator; + +/** + * struct regulator_bulk_data - Data used for bulk regulator operations. + * + * @supply The name of the supply. Initialised by the user before + * using the bulk regulator APIs. + * @consumer The regulator consumer for the supply. This will be managed + * by the bulk API. + * + * The regulator APIs provide a series of regulator_bulk_() API calls as + * a convenience to consumers which require multiple supplies. This + * structure is used to manage data for these calls. + */ +struct regulator_bulk_data { + const char *supply; + struct regulator *consumer; +}; + +#if defined(CONFIG_REGULATOR) + +/* regulator get and put */ +struct regulator *__must_check regulator_get(struct device *dev, + const char *id); +void regulator_put(struct regulator *regulator); + +/* regulator output control and status */ +int regulator_enable(struct regulator *regulator); +int regulator_disable(struct regulator *regulator); +int regulator_force_disable(struct regulator *regulator); +int regulator_is_enabled(struct regulator *regulator); + +int regulator_bulk_get(struct device *dev, int num_consumers, + struct regulator_bulk_data *consumers); +int regulator_bulk_enable(int num_consumers, + struct regulator_bulk_data *consumers); +int regulator_bulk_disable(int num_consumers, + struct regulator_bulk_data *consumers); +void regulator_bulk_free(int num_consumers, + struct regulator_bulk_data *consumers); + +int regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV); +int regulator_get_voltage(struct regulator *regulator); +int regulator_set_current_limit(struct regulator *regulator, + int min_uA, int max_uA); +int regulator_get_current_limit(struct regulator *regulator); + +int regulator_set_mode(struct regulator *regulator, unsigned int mode); +unsigned int regulator_get_mode(struct regulator *regulator); +int regulator_set_optimum_mode(struct regulator *regulator, int load_uA); + +/* regulator notifier block */ +int regulator_register_notifier(struct regulator *regulator, + struct notifier_block *nb); +int regulator_unregister_notifier(struct regulator *regulator, + struct notifier_block *nb); + +/* driver data - core doesn't touch */ +void *regulator_get_drvdata(struct regulator *regulator); +void regulator_set_drvdata(struct regulator *regulator, void *data); + +#else + +/* + * Make sure client drivers will still build on systems with no software + * controllable voltage or current regulators. + */ +static inline struct regulator *__must_check regulator_get(struct device *dev, + const char *id) +{ + /* Nothing except the stubbed out regulator API should be + * looking at the value except to check if it is an error + * value so the actual return value doesn't matter. + */ + return (struct regulator *)id; +} +static inline void regulator_put(struct regulator *regulator) +{ +} + +static inline int regulator_enable(struct regulator *regulator) +{ + return 0; +} + +static inline int regulator_disable(struct regulator *regulator) +{ + return 0; +} + +static inline int regulator_is_enabled(struct regulator *regulator) +{ + return 1; +} + +static inline int regulator_bulk_get(struct device *dev, + int num_consumers, + struct regulator_bulk_data *consumers) +{ + return 0; +} + +static inline int regulator_bulk_enable(int num_consumers, + struct regulator_bulk_data *consumers) +{ + return 0; +} + +static inline int regulator_bulk_disable(int num_consumers, + struct regulator_bulk_data *consumers) +{ + return 0; +} + +static inline void regulator_bulk_free(int num_consumers, + struct regulator_bulk_data *consumers) +{ +} + +static inline int regulator_set_voltage(struct regulator *regulator, + int min_uV, int max_uV) +{ + return 0; +} + +static inline int regulator_get_voltage(struct regulator *regulator) +{ + return 0; +} + +static inline int regulator_set_current_limit(struct regulator *regulator, + int min_uA, int max_uA) +{ + return 0; +} + +static inline int regulator_get_current_limit(struct regulator *regulator) +{ + return 0; +} + +static inline int regulator_set_mode(struct regulator *regulator, + unsigned int mode) +{ + return 0; +} + +static inline unsigned int regulator_get_mode(struct regulator *regulator) +{ + return REGULATOR_MODE_NORMAL; +} + +static inline int regulator_set_optimum_mode(struct regulator *regulator, + int load_uA) +{ + return REGULATOR_MODE_NORMAL; +} + +static inline int regulator_register_notifier(struct regulator *regulator, + struct notifier_block *nb) +{ + return 0; +} + +static inline int regulator_unregister_notifier(struct regulator *regulator, + struct notifier_block *nb) +{ + return 0; +} + +static inline void *regulator_get_drvdata(struct regulator *regulator) +{ + return NULL; +} + +static inline void regulator_set_drvdata(struct regulator *regulator, + void *data) +{ +} + +#endif + +#endif -- cgit v1.2.3 From 571a354b1542a274d88617e1f6703f3fe7a517f1 Mon Sep 17 00:00:00 2001 From: Liam Girdwood Date: Wed, 30 Apr 2008 15:42:28 +0100 Subject: regulator: regulator driver interface This allows regulator drivers to register their regulators and provide operations to the core. It also has a notifier call chain for propagating regulator events to clients. Signed-off-by: Liam Girdwood Signed-off-by: Mark Brown --- include/linux/regulator/driver.h | 99 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 99 insertions(+) create mode 100644 include/linux/regulator/driver.h (limited to 'include/linux') diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h new file mode 100644 index 000000000000..1d712c7172a2 --- /dev/null +++ b/include/linux/regulator/driver.h @@ -0,0 +1,99 @@ +/* + * driver.h -- SoC Regulator driver support. + * + * Copyright (C) 2007, 2008 Wolfson Microelectronics PLC. + * + * Author: Liam Girdwood + * + * 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. + * + * Regulator Driver Interface. + */ + +#ifndef __LINUX_REGULATOR_DRIVER_H_ +#define __LINUX_REGULATOR_DRIVER_H_ + +#include +#include + +struct regulator_constraints; +struct regulator_dev; + +/** + * struct regulator_ops - regulator operations. + * + * This struct describes regulator operations. + */ +struct regulator_ops { + + /* get/set regulator voltage */ + int (*set_voltage) (struct regulator_dev *, int min_uV, int max_uV); + int (*get_voltage) (struct regulator_dev *); + + /* get/set regulator current */ + int (*set_current_limit) (struct regulator_dev *, + int min_uA, int max_uA); + int (*get_current_limit) (struct regulator_dev *); + + /* enable/disable regulator */ + int (*enable) (struct regulator_dev *); + int (*disable) (struct regulator_dev *); + int (*is_enabled) (struct regulator_dev *); + + /* get/set regulator operating mode (defined in regulator.h) */ + int (*set_mode) (struct regulator_dev *, unsigned int mode); + unsigned int (*get_mode) (struct regulator_dev *); + + /* get most efficient regulator operating mode for load */ + unsigned int (*get_optimum_mode) (struct regulator_dev *, int input_uV, + int output_uV, int load_uA); + + /* the operations below are for configuration of regulator state when + * it's parent PMIC enters a global STANBY/HIBERNATE state */ + + /* set regulator suspend voltage */ + int (*set_suspend_voltage) (struct regulator_dev *, int uV); + + /* enable/disable regulator in suspend state */ + int (*set_suspend_enable) (struct regulator_dev *); + int (*set_suspend_disable) (struct regulator_dev *); + + /* set regulator suspend operating mode (defined in regulator.h) */ + int (*set_suspend_mode) (struct regulator_dev *, unsigned int mode); +}; + +/* + * Regulators can either control voltage or current. + */ +enum regulator_type { + REGULATOR_VOLTAGE, + REGULATOR_CURRENT, +}; + +/** + * struct regulator_desc - Regulator descriptor + * + */ +struct regulator_desc { + const char *name; + int id; + struct regulator_ops *ops; + int irq; + enum regulator_type type; + struct module *owner; +}; + + +struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc, + void *reg_data); +void regulator_unregister(struct regulator_dev *rdev); + +int regulator_notifier_call_chain(struct regulator_dev *rdev, + unsigned long event, void *data); + +void *rdev_get_drvdata(struct regulator_dev *rdev); +int rdev_get_id(struct regulator_dev *rdev); + +#endif -- cgit v1.2.3 From 4c1184e85cb381121a5273ea20ad31ca3faa0a4f Mon Sep 17 00:00:00 2001 From: Liam Girdwood Date: Wed, 30 Apr 2008 15:46:09 +0100 Subject: regulator: machine driver interface This interface is for machine specific code and allows the creation of voltage/current domains (with constraints) for each regulator. It can provide regulator constraints that will prevent device damage through overvoltage or over current caused by buggy client drivers. It also allows the creation of a regulator tree whereby some regulators are supplied by others (similar to a clock tree). Signed-off-by: Liam Girdwood Signed-off-by: Philipp Zabel Signed-off-by: Mark Brown --- include/linux/regulator/machine.h | 104 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 104 insertions(+) create mode 100644 include/linux/regulator/machine.h (limited to 'include/linux') diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h new file mode 100644 index 000000000000..11e737dbfcf2 --- /dev/null +++ b/include/linux/regulator/machine.h @@ -0,0 +1,104 @@ +/* + * machine.h -- SoC Regulator support, machine/board driver API. + * + * Copyright (C) 2007, 2008 Wolfson Microelectronics PLC. + * + * Author: Liam Girdwood + * + * 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. + * + * Regulator Machine/Board Interface. + */ + +#ifndef __LINUX_REGULATOR_MACHINE_H_ +#define __LINUX_REGULATOR_MACHINE_H_ + +#include +#include + +struct regulator; + +/* + * Regulator operation constraint flags. These flags are used to enable + * certain regulator operations and can be OR'ed together. + * + * VOLTAGE: Regulator output voltage can be changed by software on this + * board/machine. + * CURRENT: Regulator output current can be changed by software on this + * board/machine. + * MODE: Regulator operating mode can be changed by software on this + * board/machine. + * STATUS: Regulator can be enabled and disabled. + * DRMS: Dynamic Regulator Mode Switching is enabled for this regulator. + */ + +#define REGULATOR_CHANGE_VOLTAGE 0x1 +#define REGULATOR_CHANGE_CURRENT 0x2 +#define REGULATOR_CHANGE_MODE 0x4 +#define REGULATOR_CHANGE_STATUS 0x8 +#define REGULATOR_CHANGE_DRMS 0x10 + +/** + * struct regulator_state - regulator state during low power syatem states + * + * This describes a regulators state during a system wide low power state. + */ +struct regulator_state { + int uV; /* suspend voltage */ + unsigned int mode; /* suspend regulator operating mode */ + int enabled; /* is regulator enabled in this suspend state */ +}; + +/** + * struct regulation_constraints - regulator operating constraints. + * + * This struct describes regulator and board/machine specific constraints. + */ +struct regulation_constraints { + + char *name; + + /* voltage output range (inclusive) - for voltage control */ + int min_uV; + int max_uV; + + /* current output range (inclusive) - for current control */ + int min_uA; + int max_uA; + + /* valid regulator operating modes for this machine */ + unsigned int valid_modes_mask; + + /* valid operations for regulator on this machine */ + unsigned int valid_ops_mask; + + /* regulator input voltage - only if supply is another regulator */ + int input_uV; + + /* regulator suspend states for global PMIC STANDBY/HIBERNATE */ + struct regulator_state state_disk; + struct regulator_state state_mem; + struct regulator_state state_standby; + suspend_state_t initial_state; /* suspend state to set at init */ + + /* constriant flags */ + unsigned always_on:1; /* regulator never off when system is on */ + unsigned boot_on:1; /* bootloader/firmware enabled regulator */ + unsigned apply_uV:1; /* apply uV constraint iff min == max */ +}; + +int regulator_set_supply(const char *regulator, const char *regulator_supply); + +const char *regulator_get_supply(const char *regulator); + +int regulator_set_machine_constraints(const char *regulator, + struct regulation_constraints *constraints); + +int regulator_set_device_supply(const char *regulator, struct device *dev, + const char *supply); + +int regulator_suspend_prepare(suspend_state_t state); + +#endif -- cgit v1.2.3 From 48d335ba3164ce99cb8847513d0e3b6ee604eb20 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 30 Apr 2008 15:50:21 +0100 Subject: regulator: fixed regulator interface This patch adds support for fixed regulators. This class of regulator is not software controllable but can coexist on machines with software controlable regulators. Signed-off-by: Mark Brown Signed-off-by: Liam Girdwood --- include/linux/regulator/fixed.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 include/linux/regulator/fixed.h (limited to 'include/linux') diff --git a/include/linux/regulator/fixed.h b/include/linux/regulator/fixed.h new file mode 100644 index 000000000000..1387a5d2190e --- /dev/null +++ b/include/linux/regulator/fixed.h @@ -0,0 +1,22 @@ +/* + * fixed.h + * + * Copyright 2008 Wolfson Microelectronics PLC. + * + * Author: Mark Brown + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + */ + +#ifndef __REGULATOR_FIXED_H +#define __REGULATOR_FIXED_H + +struct fixed_voltage_config { + const char *supply_name; + int microvolts; +}; + +#endif -- cgit v1.2.3 From 0eb5d5ab3ec99bfd22ff16797d95835369ffb25b Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Fri, 11 Jul 2008 17:28:06 +0200 Subject: regulator: TI bq24022 Li-Ion Charger driver This adds a regulator driver for the TI bq24022 Single-Chip Li-Ion Charger with its nCE and ISET2 pins connected to GPIOs. Signed-off-by: Philipp Zabel Signed-off-by: Liam Girdwood --- include/linux/regulator/bq24022.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 include/linux/regulator/bq24022.h (limited to 'include/linux') diff --git a/include/linux/regulator/bq24022.h b/include/linux/regulator/bq24022.h new file mode 100644 index 000000000000..e84b0a9feda5 --- /dev/null +++ b/include/linux/regulator/bq24022.h @@ -0,0 +1,21 @@ +/* + * Support for TI bq24022 (bqTINY-II) Dual Input (USB/AC Adpater) + * 1-Cell Li-Ion Charger connected via GPIOs. + * + * Copyright (c) 2008 Philipp Zabel + * + * 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. + * + */ + +/** + * bq24022_mach_info - platform data for bq24022 + * @gpio_nce: GPIO line connected to the nCE pin, used to enable / disable charging + * @gpio_iset2: GPIO line connected to the ISET2 pin, used to limit charging current to 100 mA / 500 mA + */ +struct bq24022_mach_info { + int gpio_nce; + int gpio_iset2; +}; -- cgit v1.2.3 From 785957d3e8c6fb37b18bf671923a76dbd8240025 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Wed, 30 Jul 2008 03:03:15 -0700 Subject: tcp: MD5: Use MIB counter instead of warning for MD5 mismatch. From a report by Matti Aarnio, and preliminary patch by Adam Langley. Signed-off-by: David S. Miller --- include/linux/snmp.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/snmp.h b/include/linux/snmp.h index 5df62ef1280c..7a6e6bba4a71 100644 --- a/include/linux/snmp.h +++ b/include/linux/snmp.h @@ -214,6 +214,8 @@ enum LINUX_MIB_TCPDSACKIGNOREDOLD, /* TCPSACKIgnoredOld */ LINUX_MIB_TCPDSACKIGNOREDNOUNDO, /* TCPSACKIgnoredNoUndo */ LINUX_MIB_TCPSPURIOUSRTOS, /* TCPSpuriousRTOs */ + LINUX_MIB_TCPMD5NOTFOUND, /* TCPMD5NotFound */ + LINUX_MIB_TCPMD5UNEXPECTED, /* TCPMD5Unexpected */ __LINUX_MIB_MAX }; -- cgit v1.2.3 From 96d8b647cfff90c8ff07863866aacdcd9d13cead Mon Sep 17 00:00:00 2001 From: Alexey Korolev Date: Tue, 29 Jul 2008 13:54:11 +0100 Subject: [MTD] [NAND] fix subpage read for small page NAND Current implementation of subpage read feature for NAND has issues with small page devices. Small page NAND do not support RNDOUT command. So subpage feature is not applicable for them. This patch disables support of subpage for small page NAND. The code is verified on nandsim(SP NAND simulation) and on LP NAND devices. Thanks a lot to Artem for finding this issue. Signed-off-by: Alexey Korolev Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- include/linux/mtd/nand.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 83f678702dff..81774e5facf4 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -177,7 +177,9 @@ typedef enum { #define NAND_MUST_PAD(chip) (!(chip->options & NAND_NO_PADDING)) #define NAND_HAS_CACHEPROG(chip) ((chip->options & NAND_CACHEPRG)) #define NAND_HAS_COPYBACK(chip) ((chip->options & NAND_COPYBACK)) -#define NAND_SUBPAGE_READ(chip) ((chip->ecc.mode == NAND_ECC_SOFT)) +/* Large page NAND with SOFT_ECC should support subpage reads */ +#define NAND_SUBPAGE_READ(chip) ((chip->ecc.mode == NAND_ECC_SOFT) \ + && (chip->page_shift > 9)) /* Mask to zero out the chip options, which come from the id table */ #define NAND_CHIPOPTIONS_MSK (0x0000ffff & ~NAND_NO_AUTOINCR) -- cgit v1.2.3 From 95b1bc20532c18e3f19cd460c8350350c84ffbb2 Mon Sep 17 00:00:00 2001 From: David Brownell Date: Tue, 29 Jul 2008 22:28:12 -0700 Subject: [MTD] MTD_DEBUG always does compile-time typechecks The current style for debug messages is to ensure they're always parsed by the compiler and then subjected to dead code removal. That way builds won't break only when debug options get enabled, which is common when they are stripped out early by CPP. This patch makes CONFIG_MTD_DEBUG adopt that convention. Signed-off-by: David Brownell Signed-off-by: David Woodhouse --- include/linux/mtd/mtd.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 4ed40caff4e5..922636548558 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -272,7 +272,11 @@ static inline void mtd_erase_callback(struct erase_info *instr) printk(KERN_INFO args); \ } while(0) #else /* CONFIG_MTD_DEBUG */ -#define DEBUG(n, args...) do { } while(0) +#define DEBUG(n, args...) \ + do { \ + if (0) \ + printk(KERN_INFO args); \ + } while(0) #endif /* CONFIG_MTD_DEBUG */ -- cgit v1.2.3 From 1a4e564b7db999fbe5d88318c96ac8747699d417 Mon Sep 17 00:00:00 2001 From: Magnus Damm Date: Tue, 29 Jul 2008 22:32:57 -0700 Subject: resource: add resource_size() Avoid one-off errors by introducing a resource_size() function. Signed-off-by: Magnus Damm Cc: Ben Dooks Cc: Jean Delvare Cc: Paul Mundt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/ioport.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ioport.h b/include/linux/ioport.h index 2cd07cc29687..22d2115458c6 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -118,6 +118,10 @@ extern int allocate_resource(struct resource *root, struct resource *new, int adjust_resource(struct resource *res, resource_size_t start, resource_size_t size); resource_size_t resource_alignment(struct resource *res); +static inline resource_size_t resource_size(struct resource *res) +{ + return res->end - res->start + 1; +} /* Convenience shorthand with allocation */ #define request_region(start,n,name) __request_region(&ioport_resource, (start), (n), (name)) -- cgit v1.2.3 From a1531acd43310a7e4571d52e8846640667f4c74b Mon Sep 17 00:00:00 2001 From: Thomas Renninger Date: Tue, 29 Jul 2008 22:32:58 -0700 Subject: cpufreq acpi: only call _PPC after cpufreq ACPI init funcs got called already Ingo Molnar provided a fix to not call _PPC at processor driver initialization time in "[PATCH] ACPI: fix cpufreq regression" (git commit e4233dec749a3519069d9390561b5636a75c7579) But it can still happen that _PPC is called at processor driver initialization time. This patch should make sure that this is not possible anymore. Signed-off-by: Thomas Renninger Cc: Andi Kleen Cc: Len Brown Cc: Dave Jones Cc: Ingo Molnar Cc: Venkatesh Pallipadi Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/cpufreq.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 2270ca5ec631..6fd5668aa572 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -106,6 +106,7 @@ struct cpufreq_policy { #define CPUFREQ_ADJUST (0) #define CPUFREQ_INCOMPATIBLE (1) #define CPUFREQ_NOTIFY (2) +#define CPUFREQ_START (3) #define CPUFREQ_SHARED_TYPE_NONE (0) /* None */ #define CPUFREQ_SHARED_TYPE_HW (1) /* HW does needed coordination */ -- cgit v1.2.3 From 1d1958f05095a7e9ecbba86235122784a3d1b561 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Tue, 29 Jul 2008 22:33:16 -0700 Subject: mm: remove find_max_pfn_with_active_regions It has no user now Also print out info about adding/removing active regions. Signed-off-by: Yinghai Lu Acked-by: Mel Gorman Acked-by: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 866a3dbe5c75..5e2c8af49998 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1041,7 +1041,6 @@ extern unsigned long absent_pages_in_range(unsigned long start_pfn, extern void get_pfn_range_for_nid(unsigned int nid, unsigned long *start_pfn, unsigned long *end_pfn); extern unsigned long find_min_pfn_with_active_regions(void); -extern unsigned long find_max_pfn_with_active_regions(void); extern void free_bootmem_with_active_regions(int nid, unsigned long max_low_pfn); typedef int (*work_fn_t)(unsigned long, unsigned long, void *); -- cgit v1.2.3 From 3f1712bac586069d6c891a8201457283b27e8abe Mon Sep 17 00:00:00 2001 From: Vegard Nossum Date: Tue, 29 Jul 2008 22:33:32 -0700 Subject: print_ip_sym(): use %pS Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kallsyms.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kallsyms.h b/include/linux/kallsyms.h index 57aefa160a92..b96144887444 100644 --- a/include/linux/kallsyms.h +++ b/include/linux/kallsyms.h @@ -108,8 +108,7 @@ static inline void print_fn_descriptor_symbol(const char *fmt, void *addr) static inline void print_ip_sym(unsigned long ip) { - printk("[<%p>]", (void *) ip); - print_symbol(" %s\n", ip); + printk("[<%p>] %pS\n", (void *) ip, (void *) ip); } #endif /*_LINUX_KALLSYMS_H*/ -- cgit v1.2.3 From 2c203003f64de5fe55ae35712942100d270667fa Mon Sep 17 00:00:00 2001 From: Jerome Arbez-Gindre Date: Tue, 29 Jul 2008 22:33:33 -0700 Subject: connector: add a BlackBoard user to connector Add a BlackBoard user to connector. BlackBoard is part of the TSP GPL sampling framework (http://savannah.nongnu.org/p/tsp) [akpm@linux-foundation.org: add comment] Signed-off-by: Jerome Arbez-Gindre Acked-by: Evgeniy Polyakov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/connector.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/connector.h b/include/linux/connector.h index 96a89d3d6727..5c7f9468f753 100644 --- a/include/linux/connector.h +++ b/include/linux/connector.h @@ -38,8 +38,9 @@ #define CN_W1_VAL 0x1 #define CN_IDX_V86D 0x4 #define CN_VAL_V86D_UVESAFB 0x1 +#define CN_IDX_BB 0x5 /* BlackBoard, from the TSP GPL sampling framework */ -#define CN_NETLINK_USERS 5 +#define CN_NETLINK_USERS 6 /* * Maximum connector's message size. -- cgit v1.2.3 From 204b885e7322656284626949e51f292fe61313fa Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Tue, 29 Jul 2008 22:33:42 -0700 Subject: introduce lower_32_bits() macro The file kernel.h contains the upper_32_bits macro. This patch adds the other part, the lower_32_bits macro. Its first use will be in the driver for AMD IOMMU. Cc: H. Peter Anvin Signed-off-by: Joerg Roedel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kernel.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kernel.h b/include/linux/kernel.h index fdbbf72ca2eb..aaa998f65c7a 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -75,6 +75,12 @@ extern const char linux_proc_banner[]; */ #define upper_32_bits(n) ((u32)(((n) >> 16) >> 16)) +/** + * lower_32_bits - return bits 0-31 of a number + * @n: the number we're accessing + */ +#define lower_32_bits(n) ((u32)(n)) + #define KERN_EMERG "<0>" /* system is unusable */ #define KERN_ALERT "<1>" /* action must be taken immediately */ #define KERN_CRIT "<2>" /* critical conditions */ -- cgit v1.2.3 From c627f9cc046c7cd93b4525d89377fb409e170a18 Mon Sep 17 00:00:00 2001 From: Jack Steiner Date: Tue, 29 Jul 2008 22:33:53 -0700 Subject: mm: add zap_vma_ptes(): a library function to unmap driver ptes zap_vma_ptes() is intended to be used by drivers to unmap ptes assigned to the driver private vmas. This interface is similar to zap_page_range() but is less general & less likely to be abused. Needed by the GRU driver. Signed-off-by: Jack Steiner Cc: Nick Piggin Cc: Hugh Dickins Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 5e2c8af49998..335288bff1b7 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -744,6 +744,8 @@ struct zap_details { struct page *vm_normal_page(struct vm_area_struct *vma, unsigned long addr, pte_t pte); +int zap_vma_ptes(struct vm_area_struct *vma, unsigned long address, + unsigned long size); unsigned long zap_page_range(struct vm_area_struct *vma, unsigned long address, unsigned long size, struct zap_details *); unsigned long unmap_vmas(struct mmu_gather **tlb, -- cgit v1.2.3 From 3dd730f2b49f101b90d283c3efc4e6cd826dd8f6 Mon Sep 17 00:00:00 2001 From: Stephen Rothwell Date: Tue, 29 Jul 2008 16:07:37 +1000 Subject: cpumask: statement expressions confuse some versions of gcc when you take the address of the result. Noticed on a sparc64 compile using a version 3.4.5 cross compiler. kernel/time/tick-common.c: In function `tick_check_new_device': kernel/time/tick-common.c:210: error: invalid lvalue in unary `&' ... Just make it a regular expression. Signed-off-by: Stephen Rothwell Acked-by: Ingo Molnar Signed-off-by: Linus Torvalds --- include/linux/cpumask.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h index 96d0509fb8d8..d3219d73f8e6 100644 --- a/include/linux/cpumask.h +++ b/include/linux/cpumask.h @@ -287,7 +287,7 @@ static inline const cpumask_t *get_cpu_mask(unsigned int cpu) * gcc optimizes it out (it's a constant) and there's no huge stack * variable created: */ -#define cpumask_of_cpu(cpu) ({ *get_cpu_mask(cpu); }) +#define cpumask_of_cpu(cpu) (*get_cpu_mask(cpu)) #define CPU_MASK_LAST_WORD BITMAP_LAST_WORD_MASK(NR_CPUS) -- cgit v1.2.3 From 1f938d060a7bc01b5f82d46db3e38cd501b445a6 Mon Sep 17 00:00:00 2001 From: Alexander Beregalov Date: Mon, 21 Jul 2008 00:06:19 +0400 Subject: libata.h: replace __FUNCTION__ with __func__ Signed-off-by: Alexander Beregalov Signed-off-by: Jeff Garzik --- include/linux/libata.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index 5b247b8a6b3b..d4b8e5fa3e8b 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -60,9 +60,9 @@ /* note: prints function name for you */ #ifdef ATA_DEBUG -#define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) +#define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) #ifdef ATA_VERBOSE_DEBUG -#define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) +#define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) #else #define VPRINTK(fmt, args...) #endif /* ATA_VERBOSE_DEBUG */ @@ -71,7 +71,7 @@ #define VPRINTK(fmt, args...) #endif /* ATA_DEBUG */ -#define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) +#define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args) /* NEW: debug levels */ #define HAVE_LIBATA_MSG 1 -- cgit v1.2.3 From 963e4975c6f93c148ca809d986d412201df9af89 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Thu, 24 Jul 2008 17:16:06 +0100 Subject: pata_it821x: Driver updates and reworking - Add support for the RDC 1010 variant - Rework the core library to have a read_id method. This allows the hacky bits of it821x to go and prepares us for pata_hd - Switch from WARN to BUG in ata_id_string as it will reboot if you get it wrong so WARN won't be seen - Allow the issue of command 0xFC on the 821x. This is needed to query rebuild status. - Tidy up printk formatting - Do more ident rewriting on RAID volumes to handle firmware provided ident data which is rather wonky - Report the firmware revision and device layout in RAID mode - Don't try and disable raid on the 8211 or RDC - they don't have the relevant bits Signed-off-by: Alan Cox Signed-off-by: Jeff Garzik --- include/linux/libata.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index d4b8e5fa3e8b..06b80337303b 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -750,6 +750,7 @@ struct ata_port_operations { void (*set_piomode)(struct ata_port *ap, struct ata_device *dev); void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev); int (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev); + unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id); void (*dev_config)(struct ata_device *dev); @@ -951,6 +952,8 @@ extern void ata_id_string(const u16 *id, unsigned char *s, unsigned int ofs, unsigned int len); extern void ata_id_c_string(const u16 *id, unsigned char *s, unsigned int ofs, unsigned int len); +extern unsigned int ata_do_dev_read_id(struct ata_device *dev, + struct ata_taskfile *tf, u16 *id); extern void ata_qc_complete(struct ata_queued_cmd *qc); extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active); extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd, -- cgit v1.2.3 From ae375044d31075a31de5a839e07ded7f67b660aa Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Thu, 31 Jul 2008 00:38:01 -0700 Subject: netfilter: nf_conntrack_tcp: decrease timeouts while data in unacknowledged In order to time out dead connections quicker, keep track of outstanding data and cap the timeout. Suggested by Herbert Xu. Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- include/linux/netfilter/nf_conntrack_tcp.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netfilter/nf_conntrack_tcp.h b/include/linux/netfilter/nf_conntrack_tcp.h index 22ce29995f13..a049df4f2236 100644 --- a/include/linux/netfilter/nf_conntrack_tcp.h +++ b/include/linux/netfilter/nf_conntrack_tcp.h @@ -30,6 +30,9 @@ enum tcp_conntrack { /* Be liberal in window checking */ #define IP_CT_TCP_FLAG_BE_LIBERAL 0x08 +/* Has unacknowledged data */ +#define IP_CT_TCP_FLAG_DATA_UNACKNOWLEDGED 0x10 + struct nf_ct_tcp_flags { u_int8_t flags; u_int8_t mask; -- cgit v1.2.3 From e4e4e534faa3c2be4e165ce414f44b76ada7208c Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Mon, 14 Apr 2008 08:50:02 +0200 Subject: sched clock: revert various sched_clock() changes Found an interactivity problem on a quad core test-system - simple CPU loops would occasionally delay the system un an unacceptable way. After much debugging with Peter Zijlstra it turned out that the problem is caused by the string of sched_clock() changes - they caused the CPU clock to jump backwards a bit - which confuses the scheduler arithmetics. (which is unsigned for performance reasons) So revert: # c300ba2: sched_clock: and multiplier for TSC to gtod drift # c0c8773: sched_clock: only update deltas with local reads. # af52a90: sched_clock: stop maximum check on NO HZ # f7cce27: sched_clock: widen the max and min time This solves the interactivity problems. Signed-off-by: Ingo Molnar Acked-by: Peter Zijlstra Acked-by: Mike Galbraith --- include/linux/sched.h | 17 +---------------- 1 file changed, 1 insertion(+), 16 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 5270d449ff9d..ea436bc1a0e2 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1572,28 +1572,13 @@ static inline void sched_clock_idle_sleep_event(void) static inline void sched_clock_idle_wakeup_event(u64 delta_ns) { } - -#ifdef CONFIG_NO_HZ -static inline void sched_clock_tick_stop(int cpu) -{ -} - -static inline void sched_clock_tick_start(int cpu) -{ -} -#endif - -#else /* CONFIG_HAVE_UNSTABLE_SCHED_CLOCK */ +#else extern void sched_clock_init(void); extern u64 sched_clock_cpu(int cpu); extern void sched_clock_tick(void); extern void sched_clock_idle_sleep_event(void); extern void sched_clock_idle_wakeup_event(u64 delta_ns); -#ifdef CONFIG_NO_HZ -extern void sched_clock_tick_stop(int cpu); -extern void sched_clock_tick_start(int cpu); #endif -#endif /* CONFIG_HAVE_UNSTABLE_SCHED_CLOCK */ /* * For kernel-internal use: high-speed (but slightly incorrect) per-cpu -- cgit v1.2.3 From 419ca3f13532793b81aff09f80c60af3eacbb43d Mon Sep 17 00:00:00 2001 From: David Miller Date: Tue, 29 Jul 2008 21:45:03 -0700 Subject: lockdep: fix combinatorial explosion in lock subgraph traversal When we traverse the graph, either forwards or backwards, we are interested in whether a certain property exists somewhere in a node reachable in the graph. Therefore it is never necessary to traverse through a node more than once to get a correct answer to the given query. Take advantage of this property using a global ID counter so that we need not clear all the markers in all the lock_class entries before doing a traversal. A new ID is choosen when we start to traverse, and we continue through a lock_class only if it's ID hasn't been marked with the new value yet. This short-circuiting is essential especially for high CPU count systems. The scheduler has a runqueue per cpu, and needs to take two runqueue locks at a time, which leads to long chains of backwards and forwards subgraphs from these runqueue lock nodes. Without the short-circuit implemented here, a graph traversal on a runqueue lock can take up to (1 << (N - 1)) checks on a system with N cpus. For anything more than 16 cpus or so, lockdep will eventually bring the machine to a complete standstill. Signed-off-by: David S. Miller Acked-by: Peter Zijlstra Signed-off-by: Ingo Molnar --- include/linux/lockdep.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index 2486eb4edbf1..1bfdc30bb0af 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -89,6 +89,7 @@ struct lock_class { struct lockdep_subclass_key *key; unsigned int subclass; + unsigned int dep_gen_id; /* * IRQ/softirq usage tracking bits: -- cgit v1.2.3 From dacdd0e04768da1fd2b24a6ee274c582b40d0c5b Mon Sep 17 00:00:00 2001 From: Joel Becker Date: Thu, 17 Jul 2008 16:54:19 -0700 Subject: [PATCH] configfs: Include linux/err.h in linux/configfs.h We now use PTR_ERR() in the ->make_item() and ->make_group() operations. Folks including configfs.h need err.h. Signed-off-by: Joel Becker Signed-off-by: Mark Fasheh --- include/linux/configfs.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/configfs.h b/include/linux/configfs.h index d62c19ff041c..0a5491baf0bc 100644 --- a/include/linux/configfs.h +++ b/include/linux/configfs.h @@ -40,6 +40,7 @@ #include #include #include +#include #include -- cgit v1.2.3 From ecb3d28c7edd58b54f16838c434b342ba9195bec Mon Sep 17 00:00:00 2001 From: Joel Becker Date: Wed, 18 Jun 2008 19:29:05 -0700 Subject: [PATCH] configfs: Convenience macros for attribute definition. Sysfs has the _ATTR() and _ATTR_RO() macros to make defining extended form attributes easier. configfs should have something similiar. - _CONFIGFS_ATTR() and _CONFIGFS_ATTR_RO() are the counterparts to the sysfs macros. - CONFIGFS_ATTR_STRUCT() creates the extended form attribute structure. - CONFIGFS_ATTR_OPS() defines the show_attribute()/store_attribute() operations that call the show()/store() operations of the extended form configfs_attributes. Signed-off-by: Joel Becker Signed-off-by: Mark Fasheh --- include/linux/configfs.h | 67 ++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 65 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/configfs.h b/include/linux/configfs.h index 0a5491baf0bc..7f627775c947 100644 --- a/include/linux/configfs.h +++ b/include/linux/configfs.h @@ -130,8 +130,25 @@ struct configfs_attribute { /* * Users often need to create attribute structures for their configurable * attributes, containing a configfs_attribute member and function pointers - * for the show() and store() operations on that attribute. They can use - * this macro (similar to sysfs' __ATTR) to make defining attributes easier. + * for the show() and store() operations on that attribute. If they don't + * need anything else on the extended attribute structure, they can use + * this macro to define it The argument _item is the name of the + * config_item structure. + */ +#define CONFIGFS_ATTR_STRUCT(_item) \ +struct _item##_attribute { \ + struct configfs_attribute attr; \ + ssize_t (*show)(struct _item *, char *); \ + ssize_t (*store)(struct _item *, const char *, size_t); \ +} + +/* + * With the extended attribute structure, users can use this macro + * (similar to sysfs' __ATTR) to make defining attributes easier. + * An example: + * #define MYITEM_ATTR(_name, _mode, _show, _store) \ + * struct myitem_attribute childless_attr_##_name = \ + * __CONFIGFS_ATTR(_name, _mode, _show, _store) */ #define __CONFIGFS_ATTR(_name, _mode, _show, _store) \ { \ @@ -143,6 +160,52 @@ struct configfs_attribute { .show = _show, \ .store = _store, \ } +/* Here is a readonly version, only requiring a show() operation */ +#define __CONFIGFS_ATTR_RO(_name, _show) \ +{ \ + .attr = { \ + .ca_name = __stringify(_name), \ + .ca_mode = 0444, \ + .ca_owner = THIS_MODULE, \ + }, \ + .show = _show, \ +} + +/* + * With these extended attributes, the simple show_attribute() and + * store_attribute() operations need to call the show() and store() of the + * attributes. This is a common pattern, so we provide a macro to define + * them. The argument _item is the name of the config_item structure. + * This macro expects the attributes to be named "struct _attribute" + * and the function to_() to exist; + */ +#define CONFIGFS_ATTR_OPS(_item) \ +static ssize_t _item##_attr_show(struct config_item *item, \ + struct configfs_attribute *attr, \ + char *page) \ +{ \ + struct _item *_item = to_##_item(item); \ + struct _item##_attribute *_item##_attr = \ + container_of(attr, struct _item##_attribute, attr); \ + ssize_t ret = 0; \ + \ + if (_item##_attr->show) \ + ret = _item##_attr->show(_item, page); \ + return ret; \ +} \ +static ssize_t _item##_attr_store(struct config_item *item, \ + struct configfs_attribute *attr, \ + const char *page, size_t count) \ +{ \ + struct _item *_item = to_##_item(item); \ + struct _item##_attribute *_item##_attr = \ + container_of(attr, struct _item##_attribute, attr); \ + ssize_t ret = -EINVAL; \ + \ + if (_item##_attr->store) \ + ret = _item##_attr->store(_item, page, count); \ + return ret; \ +} /* * If allow_link() exists, the item can symlink(2) out to other -- cgit v1.2.3 From c3f26a269c2421f97f10cf8ed05d5099b573af4d Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Thu, 31 Jul 2008 16:58:50 -0700 Subject: netdev: Fix lockdep warnings in multiqueue configurations. When support for multiple TX queues were added, the netif_tx_lock() routines we converted to iterate over all TX queues and grab each queue's spinlock. This causes heartburn for lockdep and it's not a healthy thing to do with lots of TX queues anyways. So modify this to use a top-level lock and a "frozen" state for the individual TX queues. Signed-off-by: David S. Miller --- include/linux/netdevice.h | 86 ++++++++++++++++++++++++++++++----------------- 1 file changed, 55 insertions(+), 31 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index b4d056ceab96..ee583f642a9f 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -440,6 +440,7 @@ static inline void napi_synchronize(const struct napi_struct *n) enum netdev_queue_state_t { __QUEUE_STATE_XOFF, + __QUEUE_STATE_FROZEN, }; struct netdev_queue { @@ -636,7 +637,7 @@ struct net_device unsigned int real_num_tx_queues; unsigned long tx_queue_len; /* Max frames per queue allowed */ - + spinlock_t tx_global_lock; /* * One part is mostly used on xmit path (device) */ @@ -1099,6 +1100,11 @@ static inline int netif_queue_stopped(const struct net_device *dev) return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0)); } +static inline int netif_tx_queue_frozen(const struct netdev_queue *dev_queue) +{ + return test_bit(__QUEUE_STATE_FROZEN, &dev_queue->state); +} + /** * netif_running - test if up * @dev: network device @@ -1475,6 +1481,26 @@ static inline void __netif_tx_lock_bh(struct netdev_queue *txq) txq->xmit_lock_owner = smp_processor_id(); } +static inline int __netif_tx_trylock(struct netdev_queue *txq) +{ + int ok = spin_trylock(&txq->_xmit_lock); + if (likely(ok)) + txq->xmit_lock_owner = smp_processor_id(); + return ok; +} + +static inline void __netif_tx_unlock(struct netdev_queue *txq) +{ + txq->xmit_lock_owner = -1; + spin_unlock(&txq->_xmit_lock); +} + +static inline void __netif_tx_unlock_bh(struct netdev_queue *txq) +{ + txq->xmit_lock_owner = -1; + spin_unlock_bh(&txq->_xmit_lock); +} + /** * netif_tx_lock - grab network device transmit lock * @dev: network device @@ -1484,12 +1510,23 @@ static inline void __netif_tx_lock_bh(struct netdev_queue *txq) */ static inline void netif_tx_lock(struct net_device *dev) { - int cpu = smp_processor_id(); unsigned int i; + int cpu; + spin_lock(&dev->tx_global_lock); + cpu = smp_processor_id(); for (i = 0; i <