From da8395be0bb04f685d55f124d046766d9209214a Mon Sep 17 00:00:00 2001 From: Dave Jones Date: Tue, 20 May 2008 22:13:09 -0400 Subject: [CPUFREQ] Remove documentation of removed ondemand tunable. sampling_down_factor was removed in ccb2fe209dac9ff67f6351e783e610073afaaeaf back in June 2006. Signed-off-by: Dave Jones --- Documentation/cpu-freq/governors.txt | 8 -------- 1 file changed, 8 deletions(-) (limited to 'Documentation') diff --git a/Documentation/cpu-freq/governors.txt b/Documentation/cpu-freq/governors.txt index 6a9c55bd556..dcec0564d04 100644 --- a/Documentation/cpu-freq/governors.txt +++ b/Documentation/cpu-freq/governors.txt @@ -129,14 +129,6 @@ to its default value of '80' it means that between the checking intervals the CPU needs to be on average more than 80% in use to then decide that the CPU frequency needs to be increased. -sampling_down_factor: this parameter controls the rate that the CPU -makes a decision on when to decrease the frequency. When set to its -default value of '5' it means that at 1/5 the sampling_rate the kernel -makes a decision to lower the frequency. Five "lower rate" decisions -have to be made in a row before the CPU frequency is actually lower. -If set to '1' then the frequency decreases as quickly as it increases, -if set to '2' it decreases at half the rate of the increase. - ignore_nice_load: this parameter takes a value of '0' or '1'. When set to '0' (its default), all processes are counted towards the 'cpu utilisation' value. When set to '1', the processes that are -- cgit v1.2.3-70-g09d2 From 4d2e7d0d77e4e1e8a21cc990c607985fdba20e66 Mon Sep 17 00:00:00 2001 From: Matti Linnanvuori Date: Tue, 13 May 2008 18:31:47 +0300 Subject: doc: add a chapter about trylock functions [Bug 9011] Add a chapter about trylock functions. http://bugzilla.kernel.org/show_bug.cgi?id=9011 Signed-off-by: Matti Linnanvuori Signed-off-by: Rusty Russell (removed down_trylock) --- Documentation/DocBook/kernel-locking.tmpl | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'Documentation') diff --git a/Documentation/DocBook/kernel-locking.tmpl b/Documentation/DocBook/kernel-locking.tmpl index 77c42f40be5..2510763295d 100644 --- a/Documentation/DocBook/kernel-locking.tmpl +++ b/Documentation/DocBook/kernel-locking.tmpl @@ -703,6 +703,31 @@ + + The trylock Functions + + There are functions that try to acquire a lock only once and immediately + return a value telling about success or failure to acquire the lock. + They can be used if you need no access to the data protected with the lock + when some other thread is holding the lock. You should acquire the lock + later if you then need access to the data protected with the lock. + + + + spin_trylock() does not spin but returns non-zero if + it acquires the spinlock on the first try or 0 if not. This function can + be used in all contexts like spin_lock: you must have + disabled the contexts that might interrupt you and acquire the spin lock. + + + + mutex_trylock() does not suspend your task + but returns non-zero if it could lock the mutex on the first try + or 0 if not. This function cannot be safely used in hardware or software + interrupt contexts despite not sleeping. + + + Common Examples -- cgit v1.2.3-70-g09d2 From 03fb0bce01490c9bdedad861962c76f987531014 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Fri, 23 May 2008 13:04:19 -0700 Subject: fuse: fix bdi naming conflict Fuse allocates a separate bdi for each filesystem, and registers them in sysfs with "MAJOR:MINOR" of sb->s_dev (st_dev). This works fine for anon devices normally used by fuse, but can conflict with an already registered BDI for "fuseblk" filesystems, where sb->s_dev represents a real block device. In particularl this happens if a non-partitioned device is being mounted. Fix by registering with a different name for "fuseblk" filesystems. Thanks to Ioan Ionita for the bug report. Signed-off-by: Miklos Szeredi Reported-by: Ioan Ionita Tested-by: Ioan Ionita Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/ABI/testing/sysfs-class-bdi | 4 ++++ fs/fuse/inode.c | 7 ++++++- 2 files changed, 10 insertions(+), 1 deletion(-) (limited to 'Documentation') diff --git a/Documentation/ABI/testing/sysfs-class-bdi b/Documentation/ABI/testing/sysfs-class-bdi index 5ac1e01bbd4..5f500977b42 100644 --- a/Documentation/ABI/testing/sysfs-class-bdi +++ b/Documentation/ABI/testing/sysfs-class-bdi @@ -14,6 +14,10 @@ MAJOR:MINOR non-block filesystems which provide their own BDI, such as NFS and FUSE. +MAJOR:MINOR-fuseblk + + Value of st_dev on fuseblk filesystems. + default The default backing dev, used for non-block device backed diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index fb77e096213..43e99513334 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -488,7 +488,12 @@ static struct fuse_conn *new_conn(struct super_block *sb) err = bdi_init(&fc->bdi); if (err) goto error_kfree; - err = bdi_register_dev(&fc->bdi, fc->dev); + if (sb->s_bdev) { + err = bdi_register(&fc->bdi, NULL, "%u:%u-fuseblk", + MAJOR(fc->dev), MINOR(fc->dev)); + } else { + err = bdi_register_dev(&fc->bdi, fc->dev); + } if (err) goto error_bdi_destroy; /* -- cgit v1.2.3-70-g09d2 From 8808a793f052c0a67426a24b961402fa20e92814 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Fri, 23 May 2008 13:04:25 -0700 Subject: ibmaem: new driver for power/energy/temp meters in IBM System X hardware This driver reads IBM Active Energy Manager energy/temperature/power sensors on IBM System X hardware. [akpm@linux-foundation.org: fix printk warnings] Signed-off-by: Darrick J. Wong Cc: "Mark M. Hoffman" Cc: Corey Minyard Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/hwmon/ibmaem | 37 ++ drivers/hwmon/Kconfig | 14 + drivers/hwmon/Makefile | 1 + drivers/hwmon/ibmaem.c | 1111 ++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 1163 insertions(+) create mode 100644 Documentation/hwmon/ibmaem create mode 100644 drivers/hwmon/ibmaem.c (limited to 'Documentation') diff --git a/Documentation/hwmon/ibmaem b/Documentation/hwmon/ibmaem new file mode 100644 index 00000000000..2fefaf582a4 --- /dev/null +++ b/Documentation/hwmon/ibmaem @@ -0,0 +1,37 @@ +Kernel driver ibmaem +====================== + +Supported systems: + * Any recent IBM System X server with Active Energy Manager support. + This includes the x3350, x3550, x3650, x3655, x3755, x3850 M2, + x3950 M2, and certain HS2x/LS2x/QS2x blades. The IPMI host interface + driver ("ipmi-si") needs to be loaded for this driver to do anything. + Prefix: 'ibmaem' + Datasheet: Not available + +Author: Darrick J. Wong + +Description +----------- + +This driver implements sensor reading support for the energy and power +meters available on various IBM System X hardware through the BMC. All +sensor banks will be exported as platform devices; this driver can talk +to both v1 and v2 interfaces. This driver is completely separate from the +older ibmpex driver. + +The v1 AEM interface has a simple set of features to monitor energy use. +There is a register that displays an estimate of raw energy consumption +since the last BMC reset, and a power sensor that returns average power +use over a configurable interval. + +The v2 AEM interface is a bit more sophisticated, being able to present +a wider range of energy and power use registers, the power cap as +set by the AEM software, and temperature sensors. + +Special Features +---------------- + +The "power_cap" value displays the current system power cap, as set by +the Active Energy Manager software. Setting the power cap from the host +is not currently supported. diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index 4dc76bc45c9..00ff5334849 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -330,6 +330,20 @@ config SENSORS_CORETEMP sensor inside your CPU. Supported all are all known variants of Intel Core family. +config SENSORS_IBMAEM + tristate "IBM Active Energy Manager temperature/power sensors and control" + select IPMI_SI + depends on IPMI_HANDLER + help + If you say yes here you get support for the temperature and + power sensors and capping hardware in various IBM System X + servers that support Active Energy Manager. This includes + the x3350, x3550, x3650, x3655, x3755, x3850 M2, x3950 M2, + and certain HS2x/LS2x/QS2x blades. + + This driver can also be built as a module. If so, the module + will be called ibmaem. + config SENSORS_IBMPEX tristate "IBM PowerExecutive temperature/power sensors" select IPMI_SI diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile index 3bdb05a5cbd..d098677e08d 100644 --- a/drivers/hwmon/Makefile +++ b/drivers/hwmon/Makefile @@ -41,6 +41,7 @@ obj-$(CONFIG_SENSORS_GL518SM) += gl518sm.o obj-$(CONFIG_SENSORS_GL520SM) += gl520sm.o obj-$(CONFIG_SENSORS_HDAPS) += hdaps.o obj-$(CONFIG_SENSORS_I5K_AMB) += i5k_amb.o +obj-$(CONFIG_SENSORS_IBMAEM) += ibmaem.o obj-$(CONFIG_SENSORS_IBMPEX) += ibmpex.o obj-$(CONFIG_SENSORS_IT87) += it87.o obj-$(CONFIG_SENSORS_K8TEMP) += k8temp.o diff --git a/drivers/hwmon/ibmaem.c b/drivers/hwmon/ibmaem.c new file mode 100644 index 00000000000..5c006c9a431 --- /dev/null +++ b/drivers/hwmon/ibmaem.c @@ -0,0 +1,1111 @@ +/* + * A hwmon driver for the IBM Active Energy Manager temperature/power sensors + * and capping functionality. + * Copyright (C) 2008 IBM + * + * Author: Darrick J. Wong + * + * 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. + * + * 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 General Public License for more details. + * + * You should have received a copy of the GNU 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 + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define REFRESH_INTERVAL (HZ) +#define IPMI_TIMEOUT (30 * HZ) +#define DRVNAME "aem" + +#define AEM_NETFN 0x2E + +#define AEM_FIND_FW_CMD 0x80 +#define AEM_ELEMENT_CMD 0x81 +#define AEM_FW_INSTANCE_CMD 0x82 + +#define AEM_READ_ELEMENT_CFG 0x80 +#define AEM_READ_BUFFER 0x81 +#define AEM_READ_REGISTER 0x82 +#define AEM_WRITE_REGISTER 0x83 +#define AEM_SET_REG_MASK 0x84 +#define AEM_CLEAR_REG_MASK 0x85 +#define AEM_READ_ELEMENT_CFG2 0x86 + +#define AEM_CONTROL_ELEMENT 0 +#define AEM_ENERGY_ELEMENT 1 +#define AEM_CLOCK_ELEMENT 4 +#define AEM_POWER_CAP_ELEMENT 7 +#define AEM_EXHAUST_ELEMENT 9 +#define AEM_POWER_ELEMENT 10 + +#define AEM_MODULE_TYPE_ID 0x0001 + +#define AEM2_NUM_ENERGY_REGS 2 +#define AEM2_NUM_PCAP_REGS 6 +#define AEM2_NUM_TEMP_REGS 2 +#define AEM2_NUM_SENSORS 14 + +#define AEM1_NUM_ENERGY_REGS 1 +#define AEM1_NUM_SENSORS 3 + +/* AEM 2.x has more energy registers */ +#define AEM_NUM_ENERGY_REGS AEM2_NUM_ENERGY_REGS +/* AEM 2.x needs more sensor files */ +#define AEM_NUM_SENSORS AEM2_NUM_SENSORS + +#define POWER_CAP 0 +#define POWER_CAP_MAX_HOTPLUG 1 +#define POWER_CAP_MAX 2 +#define POWER_CAP_MIN_WARNING 3 +#define POWER_CAP_MIN 4 +#define POWER_AUX 5 + +#define AEM_DEFAULT_POWER_INTERVAL 1000 +#define AEM_MIN_POWER_INTERVAL 200 +#define UJ_PER_MJ 1000L + +static DEFINE_IDR(aem_idr); +static DEFINE_SPINLOCK(aem_idr_lock); + +static struct device_driver aem_driver = { + .name = DRVNAME, + .bus = &platform_bus_type, +}; + +struct aem_ipmi_data { + struct completion read_complete; + struct ipmi_addr address; + ipmi_user_t user; + int interface; + + struct kernel_ipmi_msg tx_message; + long tx_msgid; + + void *rx_msg_data; + unsigned short rx_msg_len; + unsigned char rx_result; + int rx_recv_type; + + struct device *bmc_device; +}; + +struct aem_ro_sensor_template { + char *label; + ssize_t (*show)(struct device *dev, + struct device_attribute *devattr, + char *buf); + int index; +}; + +struct aem_rw_sensor_template { + char *label; + ssize_t (*show)(struct device *dev, + struct device_attribute *devattr, + char *buf); + ssize_t (*set)(struct device *dev, + struct device_attribute *devattr, + const char *buf, size_t count); + int index; +}; + +struct aem_data { + struct list_head list; + + struct device *hwmon_dev; + struct platform_device *pdev; + struct mutex lock; + char valid; + unsigned long last_updated; /* In jiffies */ + u8 ver_major; + u8 ver_minor; + u8 module_handle; + int id; + struct aem_ipmi_data ipmi; + + /* Function to update sensors */ + void (*update)(struct aem_data *data); + + /* + * AEM 1.x sensors: + * Available sensors: + * Energy meter + * Power meter + * + * AEM 2.x sensors: + * Two energy meters + * Two power meters + * Two temperature sensors + * Six power cap registers + */ + + /* sysfs attrs */ + struct sensor_device_attribute sensors[AEM_NUM_SENSORS]; + + /* energy use in mJ */ + u64 energy[AEM_NUM_ENERGY_REGS]; + + /* power sampling interval in ms */ + unsigned long power_period[AEM_NUM_ENERGY_REGS]; + + /* Everything past here is for AEM2 only */ + + /* power caps in dW */ + u16 pcap[AEM2_NUM_PCAP_REGS]; + + /* exhaust temperature in C */ + u8 temp[AEM2_NUM_TEMP_REGS]; +}; + +/* Data structures returned by the AEM firmware */ +struct aem_iana_id { + u8 bytes[3]; +}; +static struct aem_iana_id system_x_id = { + .bytes = {0x4D, 0x4F, 0x00} +}; + +/* These are used to find AEM1 instances */ +struct aem_find_firmware_req { + struct aem_iana_id id; + u8 rsvd; + u16 index; + u16 module_type_id; +} __packed; + +struct aem_find_firmware_resp { + struct aem_iana_id id; + u8 num_instances; +} __packed; + +/* These are used to find AEM2 instances */ +struct aem_find_instance_req { + struct aem_iana_id id; + u8 instance_number; + u16 module_type_id; +} __packed; + +struct aem_find_instance_resp { + struct aem_iana_id id; + u8 num_instances; + u8 major; + u8 minor; + u8 module_handle; + u16 record_id; +} __packed; + +/* These are used to query sensors */ +struct aem_read_sensor_req { + struct aem_iana_id id; + u8 module_handle; + u8 element; + u8 subcommand; + u8 reg; + u8 rx_buf_size; +} __packed; + +struct aem_read_sensor_resp { + struct aem_iana_id id; + u8 bytes[0]; +} __packed; + +/* Data structures to talk to the IPMI layer */ +struct aem_driver_data { + struct list_head aem_devices; + struct ipmi_smi_watcher bmc_events; + struct ipmi_user_hndl ipmi_hndlrs; +}; + +static void aem_register_bmc(int iface, struct device *dev); +static void aem_bmc_gone(int iface); +static void aem_msg_handler(struct ipmi_recv_msg *msg, void *user_msg_data); + +static void aem_remove_sensors(struct aem_data *data); +static int aem_init_aem1(struct aem_ipmi_data *probe); +static int aem_init_aem2(struct aem_ipmi_data *probe); +static int aem1_find_sensors(struct aem_data *data); +static int aem2_find_sensors(struct aem_data *data); +static void update_aem1_sensors(struct aem_data *data); +static void update_aem2_sensors(struct aem_data *data); + +static struct aem_driver_data driver_data = { + .aem_devices = LIST_HEAD_INIT(driver_data.aem_devices), + .bmc_events = { + .owner = THIS_MODULE, + .new_smi = aem_register_bmc, + .smi_gone = aem_bmc_gone, + }, + .ipmi_hndlrs = { + .ipmi_recv_hndl = aem_msg_handler, + }, +}; + +/* Functions to talk to the IPMI layer */ + +/* Initialize IPMI address, message buffers and user data */ +static int aem_init_ipmi_data(struct aem_ipmi_data *data, int iface, + struct device *bmc) +{ + int err; + + init_completion(&data->read_complete); + data->bmc_device = bmc; + + /* Initialize IPMI address */ + data->address.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; + data->address.channel = IPMI_BMC_CHANNEL; + data->address.data[0] = 0; + data->interface = iface; + + /* Initialize message buffers */ + data->tx_msgid = 0; + data->tx_message.netfn = AEM_NETFN; + + /* Create IPMI messaging interface user */ + err = ipmi_create_user(data->interface, &driver_data.ipmi_hndlrs, + data, &data->user); + if (err < 0) { + dev_err(bmc, "Unable to register user with IPMI " + "interface %d\n", data->interface); + return -EACCES; + } + + return 0; +} + +/* Send an IPMI command */ +static int aem_send_message(struct aem_ipmi_data *data) +{ + int err; + + err = ipmi_validate_addr(&data->address, sizeof(data->address)); + if (err) + goto out; + + data->tx_msgid++; + err = ipmi_request_settime(data->user, &data->address, data->tx_msgid, + &data->tx_message, data, 0, 0, 0); + if (err) + goto out1; + + return 0; +out1: + dev_err(data->bmc_device, "request_settime=%x\n", err); + return err; +out: + dev_err(data->bmc_device, "validate_addr=%x\n", err); + return err; +} + +/* Dispatch IPMI messages to callers */ +static void aem_msg_handler(struct ipmi_recv_msg *msg, void *user_msg_data) +{ + unsigned short rx_len; + struct aem_ipmi_data *data = user_msg_data; + + if (msg->msgid != data->tx_msgid) { + dev_err(data->bmc_device, "Mismatch between received msgid " + "(%02x) and transmitted msgid (%02x)!\n", + (int)msg->msgid, + (int)data->tx_msgid); + ipmi_free_recv_msg(msg); + return; + } + + data->rx_recv_type = msg->recv_type; + if (msg->msg.data_len > 0) + data->rx_result = msg->msg.data[0]; + else + data->rx_result = IPMI_UNKNOWN_ERR_COMPLETION_CODE; + + if (msg->msg.data_len > 1) { + rx_len = msg->msg.data_len - 1; + if (data->rx_msg_len < rx_len) + rx_len = data->rx_msg_len; + data->rx_msg_len = rx_len; + memcpy(data->rx_msg_data, msg->msg.data + 1, data->rx_msg_len); + } else + data->rx_msg_len = 0; + + ipmi_free_recv_msg(msg); + complete(&data->read_complete); +} + +/* ID functions */ + +/* Obtain an id */ +static int aem_idr_get(int *id) +{ + int i, err; + +again: + if (unlikely(!idr_pre_get(&aem_idr, GFP_KERNEL))) + return -ENOMEM; + + spin_lock(&aem_idr_lock); + err = idr_get_new(&aem_idr, NULL, &i); + spin_unlock(&aem_idr_lock); + + if (unlikely(err == -EAGAIN)) + goto again; + else if (unlikely(err)) + return err; + + *id = i & MAX_ID_MASK; + return 0; +} + +/* Release an object ID */ +static void aem_idr_put(int id) +{ + spin_lock(&aem_idr_lock); + idr_remove(&aem_idr, id); + spin_unlock(&aem_idr_lock); +} + +/* Sensor support functions */ + +/* Read a sensor value */ +static int aem_read_sensor(struct aem_data *data, u8 elt, u8 reg, + void *buf, size_t size) +{ + int rs_size, res; + struct aem_read_sensor_req rs_req; + struct aem_read_sensor_resp *rs_resp; + struct aem_ipmi_data *ipmi = &data->ipmi; + + /* AEM registers are 1, 2, 4 or 8 bytes */ + switch (size) { + case 1: + case 2: + case 4: + case 8: + break; + default: + return -EINVAL; + } + + rs_req.id = system_x_id; + rs_req.module_handle = data->module_handle; + rs_req.element = elt; + rs_req.subcommand = AEM_READ_REGISTER; + rs_req.reg = reg; + rs_req.rx_buf_size = size; + + ipmi->tx_message.cmd = AEM_ELEMENT_CMD; + ipmi->tx_message.data = (char *)&rs_req; + ipmi->tx_message.data_len = sizeof(rs_req); + + rs_size = sizeof(*rs_resp) + size; + rs_resp = kzalloc(rs_size, GFP_KERNEL); + if (!rs_resp) + return -ENOMEM; + + ipmi->rx_msg_data = rs_resp; + ipmi->rx_msg_len = rs_size; + + aem_send_message(ipmi); + + res = wait_for_completion_timeout(&ipmi->read_complete, IPMI_TIMEOUT); + if (!res) + return -ETIMEDOUT; + + if (ipmi->rx_result || ipmi->rx_msg_len != rs_size || + memcmp(&rs_resp->id, &system_x_id, sizeof(system_x_id))) { + kfree(rs_resp); + return -ENOENT; + } + + switch (size) { + case 1: { + u8 *x = buf; + *x = rs_resp->bytes[0]; + break; + } + case 2: { + u16 *x = buf; + *x = be16_to_cpup((u16 *)rs_resp->bytes); + break; + } + case 4: { + u32 *x = buf; + *x = be32_to_cpup((u32 *)rs_resp->bytes); + break; + } + case 8: { + u64 *x = buf; + *x = be64_to_cpup((u64 *)rs_resp->bytes); + break; + } + } + + return 0; +} + +/* Update AEM energy registers */ +static void update_aem_energy(struct aem_data *data) +{ + aem_read_sensor(data, AEM_ENERGY_ELEMENT, 0, &data->energy[0], 8); + if (data->ver_major < 2) + return; + aem_read_sensor(data, AEM_ENERGY_ELEMENT, 1, &data->energy[1], 8); +} + +/* Update all AEM1 sensors */ +static void update_aem1_sensors(struct aem_data *data) +{ + mutex_lock(&data->lock); + if (time_before(jiffies, data->last_updated + REFRESH_INTERVAL) && + data->valid) + goto out; + + update_aem_energy(data); +out: + mutex_unlock(&data->lock); +} + +/* Update all AEM2 sensors */ +static void update_aem2_sensors(struct aem_data *data) +{ + int i; + + mutex_lock(&data->lock); + if (time_before(jiffies, data->last_updated + REFRESH_INTERVAL) && + data->valid) + goto out; + + update_aem_energy(data); + aem_read_sensor(data, AEM_EXHAUST_ELEMENT, 0, &data->temp[0], 1); + aem_read_sensor(data, AEM_EXHAUST_ELEMENT, 1, &data->temp[1], 1); + + for (i = POWER_CAP; i <= POWER_AUX; i++) + aem_read_sensor(data, AEM_POWER_CAP_ELEMENT, i, + &data->pcap[i], 2); +out: + mutex_unlock(&data->lock); +} + +/* Delete an AEM instance */ +static void aem_delete(struct aem_data *data) +{ + list_del(&data->list); + aem_remove_sensors(data); + hwmon_device_unregister(data->hwmon_dev); + ipmi_destroy_user(data->ipmi.user); + dev_set_drvdata(&data->pdev->dev, NULL); + platform_device_unregister(data->pdev); + aem_idr_put(data->id); + kfree(data); +} + +/* Probe functions for AEM1 devices */ + +/* Retrieve version and module handle for an AEM1 instance */ +static int aem_find_aem1_count(struct aem_ipmi_data *data) +{ + int res; + struct aem_find_firmware_req ff_req; + struct aem_find_firmware_resp ff_resp; + + ff_req.id = system_x_id; + ff_req.index = 0; + ff_req.module_type_id = cpu_to_be16(AEM_MODULE_TYPE_ID); + + data->tx_message.cmd = AEM_FIND_FW_CMD; + data->tx_message.data = (char *)&ff_req; + data->tx_message.data_len = sizeof(ff_req); + + data->rx_msg_data = &ff_resp; + data->rx_msg_len = sizeof(ff_resp); + + aem_send_message(data); + + res = wait_for_completion_timeout(&data->read_complete, IPMI_TIMEOUT); + if (!res) + return -ETIMEDOUT; + + if (data->rx_result || data->rx_msg_len != sizeof(ff_resp) || + memcmp(&ff_resp.id, &system_x_id, sizeof(system_x_id))) + return -ENOENT; + + return ff_resp.num_instances; +} + +/* Find and initialize one AEM1 instance */ +static int aem_init_aem1_inst(struct aem_ipmi_data *probe, u8 module_handle) +{ + struct aem_data *data; + int i; + int res = -ENOMEM; + + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (!data) + return res; + mutex_init(&data->lock); + + /* Copy instance data */ + data->ver_major = 1; + data->ver_minor = 0; + data->module_handle = module_handle; + for (i = 0; i < AEM1_NUM_ENERGY_REGS; i++) + data->power_period[i] = AEM_DEFAULT_POWER_INTERVAL; + + /* Create sub-device for this fw instance */ + if (aem_idr_get(&data->id)) + goto id_err; + + data->pdev = platform_device_alloc(DRVNAME, data->id); + if (!data->pdev) + goto dev_err; + data->pdev->dev.driver = &aem_driver; + + res = platform_device_add(data->pdev); + if (res) + goto ipmi_err; + + dev_set_drvdata(&data->pdev->dev, data); + + /* Set up IPMI interface */ + if (aem_init_ipmi_data(&data->ipmi, probe->interface, + probe->bmc_device)) + goto ipmi_err; + + /* Register with hwmon */ + data->hwmon_dev = hwmon_device_register(&data->pdev->dev); + + if (IS_ERR(data->hwmon_dev)) { + dev_err(&data->pdev->dev, "Unable to register hwmon " + "device for IPMI interface %d\n", + probe->interface); + goto hwmon_reg_err; + } + + data->update = update_aem1_sensors; + + /* Find sensors */ + if (aem1_find_sensors(data)) + goto sensor_err; + + /* Add to our list of AEM devices */ + list_add_tail(&data->list, &driver_data.aem_devices); + + dev_info(data->ipmi.bmc_device, "Found AEM v%d.%d at 0x%X\n", + data->ver_major, data->ver_minor, + data->module_handle); + return 0; + +sensor_err: + hwmon_device_unregister(data->hwmon_dev); +hwmon_reg_err: + ipmi_destroy_user(data->ipmi.user); +ipmi_err: + dev_set_drvdata(&data->pdev->dev, NULL); + platform_device_unregister(data->pdev); +dev_err: + aem_idr_put(data->id); +id_err: + kfree(data); + + return res; +} + +/* Find and initialize all AEM1 instances */ +static int aem_init_aem1(struct aem_ipmi_data *probe) +{ + int num, i, err; + + num = aem_find_aem1_count(probe); + for (i = 0; i < num; i++) { + err = aem_init_aem1_inst(probe, i); + if (err) { + dev_err(probe->bmc_device, + "Error %d initializing AEM1 0x%X\n", + err, i); + return err; + } + } + + return 0; +} + +/* Probe functions for AEM2 devices */ + +/* Retrieve version and module handle for an AEM2 instance */ +static int aem_find_aem2(struct aem_ipmi_data *data, + struct aem_find_instance_resp *fi_resp, + int instance_num) +{ + int res; + struct aem_find_instance_req fi_req; + + fi_req.id = system_x_id; + fi_req.instance_number = instance_num; + fi_req.module_type_id = cpu_to_be16(AEM_MODULE_TYPE_ID); + + data->tx_message.cmd = AEM_FW_INSTANCE_CMD; + data->tx_message.data = (char *)&fi_req; + data->tx_message.data_len = sizeof(fi_req); + + data->rx_msg_data = fi_resp; + data->rx_msg_len = sizeof(*fi_resp); + + aem_send_message(data); + + res = wait_for_completion_timeout(&data->read_complete, IPMI_TIMEOUT); + if (!res) + return -ETIMEDOUT; + + if (data->rx_result || data->rx_msg_len != sizeof(*fi_resp) || + memcmp(&fi_resp->id, &system_x_id, sizeof(system_x_id))) + return -ENOENT; + + return 0; +} + +/* Find and initialize one AEM2 instance */ +static int aem_init_aem2_inst(struct aem_ipmi_data *probe, + struct aem_find_instance_resp *fi_resp) +{ + struct aem_data *data; + int i; + int res = -ENOMEM; + + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (!data) + return res; + mutex_init(&data->lock); + + /* Copy instance data */ + data->ver_major = fi_resp->major; + data->ver_minor = fi_resp->minor; + data->module_handle = fi_resp->module_handle; + for (i = 0; i < AEM2_NUM_ENERGY_REGS; i++) + data->power_period[i] = AEM_DEFAULT_POWER_INTERVAL; + + /* Create sub-device for this fw instance */ + if (aem_idr_get(&data->id)) + goto id_err; + + data->pdev = platform_device_alloc(DRVNAME, data->id); + if (!data->pdev) + goto dev_err; + data->pdev->dev.driver = &aem_driver; + + res = platform_device_add(data->pdev); + if (res) + goto ipmi_err; + + dev_set_drvdata(&data->pdev->dev, data); + + /* Set up IPMI interface */ + if (aem_init_ipmi_data(&data->ipmi, probe->interface, + probe->bmc_device)) + goto ipmi_err; + + /* Register with hwmon */ + data->hwmon_dev = hwmon_device_register(&data->pdev->dev); + + if (IS_ERR(data->hwmon_dev)) { + dev_err(&data->pdev->dev, "Unable to register hwmon " + "device for IPMI interface %d\n", + probe->interface); + goto hwmon_reg_err; + } + + data->update = update_aem2_sensors; + + /* Find sensors */ + if (aem2_find_sensors(data)) + goto sensor_err; + + /* Add to our list of AEM devices */ + list_add_tail(&data->list, &driver_data.aem_devices); + + dev_info(data->ipmi.bmc_device, "Found AEM v%d.%d at 0x%X\n", + data->ver_major, data->ver_minor, + data->module_handle); + return 0; + +sensor_err: + hwmon_device_unregister(data->hwmon_dev); +hwmon_reg_err: + ipmi_destroy_user(data->ipmi.user); +ipmi_err: + dev_set_drvdata(&data->pdev->dev, NULL); + platform_device_unregister(data->pdev); +dev_err: + aem_idr_put(data->id); +id_err: + kfree(data); + + return res; +} + +/* Find and initialize all AEM2 instances */ +static int aem_init_aem2(struct aem_ipmi_data *probe) +{ + struct aem_find_instance_resp fi_resp; + int err; + int i = 0; + + while (!aem_find_aem2(probe, &fi_resp, i)) { + if (fi_resp.major != 2) { + dev_err(probe->bmc_device, "Unknown AEM v%d; please " + "report this to the maintainer.\n", + fi_resp.major); + i++; + continue; + } + err = aem_init_aem2_inst(probe, &fi_resp); + if (err) { + dev_err(probe->bmc_device, + "Error %d initializing AEM2 0x%X\n", + err, fi_resp.module_handle); + return err; + } + i++; + } + + return 0; +} + +/* Probe a BMC for AEM firmware instances */ +static void aem_register_bmc(int iface, struct device *dev) +{ + struct aem_ipmi_data probe; + + if (aem_init_ipmi_data(&probe, iface, dev)) + return; + + /* Ignore probe errors; they won't cause problems */ + aem_init_aem1(&probe); + aem_init_aem2(&probe); + + ipmi_destroy_user(probe.user); +} + +/* Handle BMC deletion */ +static void aem_bmc_gone(int iface) +{ + struct aem_data *p1, *next1; + + list_for_each_entry_safe(p1, next1, &driver_data.aem_devices, list) + if (p1->ipmi.interface == iface) + aem_delete(p1); +} + +/* sysfs support functions */ + +/* AEM device name */ +static ssize_t show_name(struct device *dev, struct device_attribute *devattr, + char *buf) +{ + struct aem_data *data = dev_get_drvdata(dev); + + return sprintf(buf, "%s%d\n", DRVNAME, data->ver_major); +} +static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0); + +/* AEM device version */ +static ssize_t show_version(struct device *dev, + struct device_attribute *devattr, + char *buf) +{ + struct aem_data *data = dev_get_drvdata(dev); + + return sprintf(buf, "%d.%d\n", data->ver_major, data->ver_minor); +} +static SENSOR_DEVICE_ATTR(version, S_IRUGO, show_version, NULL, 0); + +/* Display power use */ +static ssize_t aem_show_power(struct device *dev, + struct device_attribute *devattr, + char *buf) +{ + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); + struct aem_data *data = dev_get_drvdata(dev); + u64 before, after, delta, time; + signed long leftover; + struct timespec b, a; + + mutex_lock(&data->lock); + update_aem_energy(data); + getnstimeofday(&b); + before = data->energy[attr->index]; + + leftover = schedule_timeout_interruptible( + msecs_to_jiffies(data->power_period[attr->index]) + ); + if (leftover) { + mutex_unlock(&data->lock); + return 0; + } + + update_aem_energy(data); + getnstimeofday(&a); + after = data->energy[attr->index]; + mutex_unlock(&data->lock); + + time = timespec_to_ns(&a) - timespec_to_ns(&b); + delta = (after - before) * UJ_PER_MJ; + + return sprintf(buf, "%llu\n", + (unsigned long long)div64_u64(delta * NSEC_PER_SEC, time)); +} + +/* Display energy use */ +static ssize_t aem_show_energy(struct device *dev, + struct device_attribute *devattr, + char *buf) +{ + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); + struct aem_data *a = dev_get_drvdata(dev); + a->update(a); + + return sprintf(buf, "%llu\n", + (unsigned long long)a->energy[attr->index] * 1000); +} + +/* Display power interval registers */ +static ssize_t aem_show_power_period(struct device *dev, + struct device_attribute *devattr, + char *buf) +{ + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); + struct aem_data *a = dev_get_drvdata(dev); + a->update(a); + + return sprintf(buf, "%lu\n", a->power_period[attr->index]); +} + +/* Set power interval registers */ +static ssize_t aem_set_power_period(struct device *dev, + struct device_attribute *devattr, + const char *buf, size_t count) +{ + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); + struct aem_data *a = dev_get_drvdata(dev); + unsigned long temp; + int res; + + res = strict_strtoul(buf, 10, &temp); + if (res) + return res; + + if (temp < AEM_MIN_POWER_INTERVAL) + return -EINVAL; + + mutex_lock(&a->lock); + a->power_period[attr->index] = temp; + mutex_unlock(&a->lock); + + return count; +} + +/* Discover sensors on an AEM device */ +static int aem_register_sensors(struct aem_data *data, + struct aem_ro_sensor_template *ro, + struct aem_rw_sensor_template *rw) +{ + struct device *dev = &data->pdev->dev; + struct sensor_device_attribute *sensors = data->sensors; + int err; + + /* Set up read-only sensors */ + while (ro->label) { + sensors->dev_attr.attr.name = ro->label; + sensors->dev_attr.attr.mode = S_IRUGO; + sensors->dev_attr.show = ro->show; + sensors->index = ro->index; + + err = device_create_file(dev, &sensors->dev_attr); + if (err) { + sensors->dev_attr.attr.name = NULL; + goto error; + } + sensors++; + ro++; + } + + /* Set up read-write sensors */ + while (rw->label) { + sensors->dev_attr.attr.name = rw->label; + sensors->dev_attr.attr.mode = S_IRUGO | S_IWUSR; + sensors->dev_attr.show = rw->show; + sensors->dev_attr.store = rw->set; + sensors->index = rw->index; + + err = device_create_file(dev, &sensors->dev_attr); + if (err) { + sensors->dev_attr.attr.name = NULL; + goto error; + } + sensors++; + rw++; + } + + err = device_create_file(dev, &sensor_dev_attr_name.dev_attr); + if (err) + goto error; + err = device_create_file(dev, &sensor_dev_attr_version.dev_attr); + return err; + +error: + aem_remove_sensors(data); + return err; +} + +/* sysfs support functions for AEM2 sensors */ + +/* Display temperature use */ +static ssize_t aem2_show_temp(struct device *dev, + struct device_attribute *devattr, + char *buf) +{ + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); + struct aem_data *a = dev_get_drvdata(dev); + a->update(a); + + return sprintf(buf, "%u\n", a->temp[attr->index] * 1000); +} + +/* Display power-capping registers */ +static ssize_t aem2_show_pcap_value(struct device *dev, + struct device_attribute *devattr, + char *buf) +{ + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); + struct aem_data *a = dev_get_drvdata(dev); + a->update(a); + + return sprintf(buf, "%u\n", a->pcap[attr->index] * 100000); +} + +/* Remove sensors attached to an AEM device */ +static void aem_remove_sensors(struct aem_data *data) +{ + int i; + + for (i = 0; i < AEM_NUM_SENSORS; i++) { + if (!data->sensors[i].dev_attr.attr.name) + continue; + device_remove_file(&data->pdev->dev, + &data->sensors[i].dev_attr); + } + + device_remove_file(&data->pdev->dev, + &sensor_dev_attr_name.dev_attr); + device_remove_file(&data->pdev->dev, + &sensor_dev_attr_version.dev_attr); +} + +/* Sensor probe functions */ + +/* Description of AEM1 sensors */ +static struct aem_ro_sensor_template aem1_ro_sensors[] = { +{"energy1_input", aem_show_energy, 0}, +{"power1_average", aem_show_power, 0}, +{NULL, NULL, 0}, +}; + +static struct aem_rw_sensor_template aem1_rw_sensors[] = { +{"power1_average_interval", aem_show_power_period, aem_set_power_period, 0}, +{NULL, NULL, NULL, 0}, +}; + +/* Description of AEM2 sensors */ +static struct aem_ro_sensor_template aem2_ro_sensors[] = { +{"energy1_input", aem_show_energy, 0}, +{"energy2_input", aem_show_energy, 1}, +{"power1_average", aem_show_power, 0}, +{"power2_average", aem_show_power, 1}, +{"temp1_input", aem2_show_temp, 0}, +{"temp2_input", aem2_show_temp, 1}, + +{"power4_average", aem2_show_pcap_value, POWER_CAP_MAX_HOTPLUG}, +{"power5_average", aem2_show_pcap_value, POWER_CAP_MAX}, +{"power6_average", aem2_show_pcap_value, POWER_CAP_MIN_WARNING}, +{"power7_average", aem2_show_pcap_value, POWER_CAP_MIN}, + +{"power3_average", aem2_show_pcap_value, POWER_AUX}, +{"power_cap", aem2_show_pcap_value, POWER_CAP}, +{NULL, NULL, 0}, +}; + +static struct aem_rw_sensor_template aem2_rw_sensors[] = { +{"power1_average_interval", aem_show_power_period, aem_set_power_period, 0}, +{"power2_average_interval", aem_show_power_period, aem_set_power_period, 1}, +{NULL, NULL, NULL, 0}, +}; + +/* Set up AEM1 sensor attrs */ +static int aem1_find_sensors(struct aem_data *data) +{ + return aem_register_sensors(data, aem1_ro_sensors, aem1_rw_sensors); +} + +/* Set up AEM2 sensor attrs */ +static int aem2_find_sensors(struct aem_data *data) +{ + return aem_register_sensors(data, aem2_ro_sensors, aem2_rw_sensors); +} + +/* Module init/exit routines */ + +static int __init aem_init(void) +{ + int res; + + res = driver_register(&aem_driver); + if (res) { + printk(KERN_ERR "Can't register aem driver\n"); + return res; + } + + res = ipmi_smi_watcher_register(&driver_data.bmc_events); + if (res) + goto ipmi_reg_err; + return 0; + +ipmi_reg_err: + driver_unregister(&aem_driver); + return res; + +} + +static void __exit aem_exit(void) +{ + struct aem_data *p1, *next1; + + ipmi_smi_watcher_unregister(&driver_data.bmc_events); + driver_unregister(&aem_driver); + list_for_each_entry_safe(p1, next1, &driver_data.aem_devices, list) + aem_delete(p1); +} + +MODULE_AUTHOR("Darrick J. Wong "); +MODULE_DESCRIPTION("IBM Active Energy Manager power/temp sensor driver"); +MODULE_LICENSE("GPL"); + +module_init(aem_init); +module_exit(aem_exit); -- cgit v1.2.3-70-g09d2 From 571640cad3fda6475da45d91cf86076f1f86bd9b Mon Sep 17 00:00:00 2001 From: Eric Sandeen Date: Mon, 26 May 2008 12:29:46 -0400 Subject: ext4: enable barriers by default I can't think of any valid reason for ext4 to not use barriers when they are available; I believe this is necessary for filesystem integrity in the face of a volatile write cache on storage. An administrator who trusts that the cache is sufficiently battery- backed (and power supplies are sufficiently redundant, etc...) can always turn it back off again. SuSE has carried such a patch for ext3 for quite some time now. Also document the mount option while we're at it. Signed-off-by: Eric Sandeen Signed-off-by: Mingming Cao Signed-off-by: "Theodore Ts'o" --- Documentation/filesystems/ext4.txt | 12 ++++++++++-- fs/ext4/super.c | 11 +++++++++-- 2 files changed, 19 insertions(+), 4 deletions(-) (limited to 'Documentation') diff --git a/Documentation/filesystems/ext4.txt b/Documentation/filesystems/ext4.txt index 560f88dc709..0c5086db835 100644 --- a/Documentation/filesystems/ext4.txt +++ b/Documentation/filesystems/ext4.txt @@ -139,8 +139,16 @@ commit=nrsec (*) Ext4 can be told to sync all its data and metadata Setting it to very large values will improve performance. -barrier=1 This enables/disables barriers. barrier=0 disables - it, barrier=1 enables it. +barrier=<0|1(*)> This enables/disables the use of write barriers in + the jbd code. barrier=0 disables, barrier=1 enables. + This also requires an IO stack which can support + barriers, and if jbd gets an error on a barrier + write, it will disable again with a warning. + Write barriers enforce proper on-disk ordering + of journal commits, making volatile disk write caches + safe to use, at some performance penalty. If + your disks are battery-backed in one way or another, + disabling barriers may safely improve performance. orlov (*) This enables the new Orlov block allocator. It is enabled by default. diff --git a/fs/ext4/super.c b/fs/ext4/super.c index ba92c606ad9..cb96f127c36 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -671,6 +671,7 @@ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs) unsigned long def_mount_opts; struct super_block *sb = vfs->mnt_sb; struct ext4_sb_info *sbi = EXT4_SB(sb); + journal_t *journal = sbi->s_journal; struct ext4_super_block *es = sbi->s_es; def_mount_opts = le32_to_cpu(es->s_default_mount_opts); @@ -729,8 +730,13 @@ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs) seq_printf(seq, ",commit=%u", (unsigned) (sbi->s_commit_interval / HZ)); } - if (test_opt(sb, BARRIER)) - seq_puts(seq, ",barrier=1"); + /* + * We're changing the default of barrier mount option, so + * let's always display its mount state so it's clear what its + * status is. + */ + seq_puts(seq, ",barrier="); + seq_puts(seq, test_opt(sb, BARRIER) ? "1" : "0"); if (test_opt(sb, JOURNAL_ASYNC_COMMIT)) seq_puts(seq, ",journal_async_commit"); if (test_opt(sb, NOBH)) @@ -1909,6 +1915,7 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent) sbi->s_resgid = le16_to_cpu(es->s_def_resgid); set_opt(sbi->s_mount_opt, RESERVATION); + set_opt(sbi->s_mount_opt, BARRIER); /* * turn on extents feature by default in ext4 filesystem -- cgit v1.2.3-70-g09d2 From 20887611523e749d99cc7d64ff6c97d27529fbae Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Fri, 30 May 2008 15:09:46 -0500 Subject: lguest: notify on empty This is the lguest implementation of the VIRTIO_F_NOTIFY_ON_EMPTY feature. It is currently only published for network devices, but it is turned on for everyone. Signed-off-by: Rusty Russell --- Documentation/lguest/lguest.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) (limited to 'Documentation') diff --git a/Documentation/lguest/lguest.c b/Documentation/lguest/lguest.c index 3be8ab2a886..82fafe0429f 100644 --- a/Documentation/lguest/lguest.c +++ b/Documentation/lguest/lguest.c @@ -157,6 +157,9 @@ struct virtqueue /* The routine to call when the Guest pings us. */ void (*handle_output)(int fd, struct virtqueue *me); + + /* Outstanding buffers */ + unsigned int inflight; }; /* Remember the arguments to the program so we can "reboot" */ @@ -702,6 +705,7 @@ static unsigned get_vq_desc(struct virtqueue *vq, errx(1, "Looped descriptor"); } while ((i = next_desc(vq, i)) != vq->vring.num); + vq->inflight++; return head; } @@ -719,6 +723,7 @@ static void add_used(struct virtqueue *vq, unsigned int head, int len) /* Make sure buffer is written before we update index. */ wmb(); vq->vring.used->idx++; + vq->inflight--; } /* This actually sends the interrupt for this virtqueue */ @@ -726,8 +731,9 @@ static void trigger_irq(int fd, struct virtqueue *vq) { unsigned long buf[] = { LHREQ_IRQ, vq->config.irq }; - /* If they don't want an interrupt, don't send one. */ - if (vq->vring.avail->flags & VRING_AVAIL_F_NO_INTERRUPT) + /* If they don't want an interrupt, don't send one, unless empty. */ + if ((vq->vring.avail->flags & VRING_AVAIL_F_NO_INTERRUPT) + && vq->inflight) return; /* Send the Guest an interrupt tell them we used something up. */ @@ -1107,6 +1113,7 @@ static void add_virtqueue(struct device *dev, unsigned int num_descs, vq->next = NULL; vq->last_avail_idx = 0; vq->dev = dev; + vq->inflight = 0; /* Initialize the configuration. */ vq->config.num = num_descs; @@ -1368,6 +1375,7 @@ static void setup_tun_net(const char *arg) /* Tell Guest what MAC address to use. */ add_feature(dev, VIRTIO_NET_F_MAC); + add_feature(dev, VIRTIO_F_NOTIFY_ON_EMPTY); set_config(dev, sizeof(conf), &conf); /* We don't need the socket any more; setup is done. */ -- cgit v1.2.3-70-g09d2 From 57c511d8d47caeeae375cb8106662c0bd6a7e7e0 Mon Sep 17 00:00:00 2001 From: Adrian Bunk Date: Tue, 3 Jun 2008 16:00:01 -0700 Subject: bridge: update URL This patch updates the URL of the bridge homepage. Signed-off-by: Adrian Bunk Signed-off-by: David S. Miller --- Documentation/networking/bridge.txt | 2 +- MAINTAINERS | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'Documentation') diff --git a/Documentation/networking/bridge.txt b/Documentation/networking/bridge.txt index bdae2db4119..bec69a8a169 100644 --- a/Documentation/networking/bridge.txt +++ b/Documentation/networking/bridge.txt @@ -1,6 +1,6 @@ In order to use the Ethernet bridging functionality, you'll need the userspace tools. These programs and documentation are available -at http://bridge.sourceforge.net. The download page is +at http://www.linux-foundation.org/en/Net:Bridge. The download page is http://prdownloads.sourceforge.net/bridge. If you still have questions, don't hesitate to post to the mailing list diff --git a/MAINTAINERS b/MAINTAINERS index 0a6d2ca03ce..46fa1797707 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1611,7 +1611,7 @@ ETHERNET BRIDGE P: Stephen Hemminger M: shemminger@linux-foundation.org L: bridge@lists.linux-foundation.org -W: http://bridge.sourceforge.net/ +W: http://www.linux-foundation.org/en/Net:Bridge S: Maintained ETHERTEAM 16I DRIVER -- cgit v1.2.3-70-g09d2 From 8f9935732930e705cab1936a03418ce01aee979a Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Sun, 25 May 2008 11:45:53 -0300 Subject: V4L/DVB (7932): cx18: mark Compro H900 as fully supported. I always assumed that the Compro H900 could do digital as well, but it turned out that it is an analog-only card. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- Documentation/video4linux/cx18.txt | 4 +++- drivers/media/video/cx18/cx18-cards.c | 4 ++-- 2 files changed, 5 insertions(+), 3 deletions(-) (limited to 'Documentation') diff --git a/Documentation/video4linux/cx18.txt b/Documentation/video4linux/cx18.txt index 077d56ec3f3..6842c262890 100644 --- a/Documentation/video4linux/cx18.txt +++ b/Documentation/video4linux/cx18.txt @@ -1,7 +1,9 @@ Some notes regarding the cx18 driver for the Conexant CX23418 MPEG encoder chip: -1) The only hardware currently supported is the Hauppauge HVR-1600. +1) The only hardware currently supported is the Hauppauge HVR-1600 + card and the Compro VideoMate H900 (note that this card only + supports analog input, it has no digital tuner!). 2) Some people have problems getting the i2c bus to work. Cause unknown. The symptom is that the eeprom cannot be read and the card is diff --git a/drivers/media/video/cx18/cx18-cards.c b/drivers/media/video/cx18/cx18-cards.c index 553adbf2cd4..baccd079243 100644 --- a/drivers/media/video/cx18/cx18-cards.c +++ b/drivers/media/video/cx18/cx18-cards.c @@ -126,7 +126,7 @@ static const struct cx18_card cx18_card_hvr1600_samsung = { /* ------------------------------------------------------------------------- */ -/* Compro VideoMate H900: not working at the moment! */ +/* Compro VideoMate H900: note that this card is analog only! */ static const struct cx18_card_pci_info cx18_pci_h900[] = { { PCI_DEVICE_ID_CX23418, CX18_PCI_ID_COMPRO, 0xe100 }, @@ -136,7 +136,7 @@ static const struct cx18_card_pci_info cx18_pci_h900[] = { static const struct cx18_card cx18_card_h900 = { .type = CX18_CARD_COMPRO_H900, .name = "Compro VideoMate H900", - .comment = "DVB & VBI are not yet supported\n", + .comment = "VBI is not yet supported\n", .v4l2_capabilities = CX18_CAP_ENCODER, .hw_audio_ctrl = CX18_HW_CX23418, .hw_all = CX18_HW_TUNER, -- cgit v1.2.3-70-g09d2 From a9606ce697ed719071fcccee8591ff033fa5e16d Mon Sep 17 00:00:00 2001 From: Daniel Gimpelevich Date: Tue, 3 Jun 2008 21:29:45 -0300 Subject: V4L/DVB (7990): Fix entry for PowerColor RA 330 and make it run with firmware version 2.7 Signed-off-by: Daniel Gimpelevich Signed-off-by: Mauro Carvalho Chehab --- Documentation/video4linux/CARDLIST.cx88 | 2 +- drivers/media/video/cx88/cx88-cards.c | 13 ++++++++++--- 2 files changed, 11 insertions(+), 4 deletions(-) (limited to 'Documentation') diff --git a/Documentation/video4linux/CARDLIST.cx88 b/Documentation/video4linux/CARDLIST.cx88 index 54395734646..7cf5685d364 100644 --- a/Documentation/video4linux/CARDLIST.cx88 +++ b/Documentation/video4linux/CARDLIST.cx88 @@ -60,7 +60,7 @@ 59 -> DViCO FusionHDTV 5 PCI nano [18ac:d530] 60 -> Pinnacle Hybrid PCTV [12ab:1788] 61 -> Winfast TV2000 XP Global [107d:6f18] - 62 -> PowerColor Real Angel 330 [14f1:ea3d] + 62 -> PowerColor RA330 [14f1:ea3d] 63 -> Geniatech X8000-MT DVBT [14f1:8852] 64 -> DViCO FusionHDTV DVB-T PRO [18ac:db30] 65 -> DViCO FusionHDTV 7 Gold [18ac:d610] diff --git a/drivers/media/video/cx88/cx88-cards.c b/drivers/media/video/cx88/cx88-cards.c index aeba26dc0a3..fa6d398e97b 100644 --- a/drivers/media/video/cx88/cx88-cards.c +++ b/drivers/media/video/cx88/cx88-cards.c @@ -1493,10 +1493,16 @@ static const struct cx88_board cx88_boards[] = { }, }, [CX88_BOARD_POWERCOLOR_REAL_ANGEL] = { - .name = "PowerColor Real Angel 330", + .name = "PowerColor RA330", /* Long names may confuse LIRC. */ .tuner_type = TUNER_XC2028, .tuner_addr = 0x61, .input = { { + .type = CX88_VMUX_DEBUG, + .vmux = 3, /* Due to the way the cx88 driver is written, */ + .gpio0 = 0x00ff, /* there is no way to deactivate audio pass- */ + .gpio1 = 0xf39d, /* through without this entry. Furthermore, if */ + .gpio3 = 0x0000, /* the TV mux entry is first, you get audio */ + }, { /* from the tuner on boot for a little while. */ .type = CX88_VMUX_TELEVISION, .vmux = 0, .gpio0 = 0x00ff, @@ -2424,8 +2430,9 @@ void cx88_setup_xc3028(struct cx88_core *core, struct xc2028_ctrl *ctl) switch (core->boardnr) { case CX88_BOARD_POWERCOLOR_REAL_ANGEL: - /* Doesn't work with firmware version 2.7 */ - ctl->fname = "xc3028-v25.fw"; + /* Now works with firmware version 2.7 */ + if (core->i2c_algo.udelay < 16) + core->i2c_algo.udelay = 16; break; case CX88_BOARD_DVICO_FUSIONHDTV_DVB_T_PRO: ctl->scode_table = XC3028_FE_ZARLINK456; -- cgit v1.2.3-70-g09d2 From adbd5886da5f467148b26cca3728ab0e672b3fcc Mon Sep 17 00:00:00 2001 From: Willy Tarreau Date: Tue, 3 Jun 2008 00:20:28 +0200 Subject: doc: add suggestions about good practises for maintainers Suggest how to deal with patch modifications caused by merging or back-porting when you're a maintainer. Signed-off-by: Willy Tarreau Signed-off-by: Linus Torvalds --- Documentation/SubmittingPatches | 46 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) (limited to 'Documentation') diff --git a/Documentation/SubmittingPatches b/Documentation/SubmittingPatches index 9c93a03ea33..118ca6e9404 100644 --- a/Documentation/SubmittingPatches +++ b/Documentation/SubmittingPatches @@ -327,6 +327,52 @@ Some people also put extra tags at the end. They'll just be ignored for now, but you can do this to mark internal company procedures or just point out some special detail about the sign-off. +If you are a subsystem or branch maintainer, sometimes you need to slightly +modify patches you receive in order to merge them, because the code is not +exactly the same in your tree and the submitters'. If you stick strictly to +rule (c), you should ask the submitter to rediff, but this is a totally +counter-productive waste of time and energy. Rule (b) allows you to adjust +the code, but then it is very impolite to change one submitter's code and +make him endorse your bugs. To solve this problem, it is recommended that +you add a line between the last Signed-off-by header and yours, indicating +the nature of your changes. While there is nothing mandatory about this, it +seems like prepending the description with your mail and/or name, all +enclosed in square brackets, is noticeable enough to make it obvious that +you are responsible for last-minute changes. Example : + + Signed-off-by: Random J Developer + [lucky@maintainer.example.org: struct foo moved from foo.c to foo.h] + Signed-off-by: Lucky K Maintainer + +This practise is particularly helpful if you maintain a stable branch and +want at the same time to credit the author, track changes, merge the fix, +and protect the submitter from complaints. Note that under no circumstances +can you change the author's identity (the From header), as it is the one +which appears in the changelog. + +Special note to back-porters: It seems to be a common and useful practise +to insert an indication of the origin of a patch at the top of the commit +message (just after the subject line) to facilitate tracking. For instance, +here's what we see in 2.6-stable : + + Date: Tue May 13 19:10:30 2008 +0000 + + SCSI: libiscsi regression in 2.6.25: fix nop timer handling + + commit 4cf1043593db6a337f10e006c23c69e5fc93e722 upstream + +And here's what appears in 2.4 : + + Date: Tue May 13 22:12:27 2008 +0200 + + wireless, airo: waitbusy() won't delay + + [backport of 2.6 commit b7acbdfbd1f277c1eb23f344f899cfa4cd0bf36a] + +Whatever the format, this information provides a valuable help to people +tracking your trees, and to people trying to trouble-shoot bugs in your +tree. + 13) When to use Acked-by: and Cc: -- cgit v1.2.3-70-g09d2 From 6a7d68e899b7f609708e7590784344f03640f774 Mon Sep 17 00:00:00 2001 From: Miao Xie Date: Thu, 5 Jun 2008 22:45:54 -0700 Subject: cpusets: fix and update Documentation Make the doc consistent with current cpusets implementation. Signed-off-by: Miao Xie Acked-by: Paul Jackson Cc: David Rientjes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/cpusets.txt | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'Documentation') diff --git a/Documentation/cpusets.txt b/Documentation/cpusets.txt index fb7b361e6ee..d803c5c68ab 100644 --- a/Documentation/cpusets.txt +++ b/Documentation/cpusets.txt @@ -199,7 +199,7 @@ using the sched_setaffinity, mbind and set_mempolicy system calls. The following rules apply to each cpuset: - Its CPUs and Memory Nodes must be a subset of its parents. - - It can only be marked exclusive if its parent is. + - It can't be marked exclusive unless its parent is. - If its cpu or memory is exclusive, they may not overlap any sibling. These rules, and the natural hierarchy of cpusets, enable efficient @@ -345,7 +345,7 @@ is modified to perform an inline check for this PF_SPREAD_PAGE task flag, and if set, a call to a new routine cpuset_mem_spread_node() returns the node to prefer for the allocation. -Similarly, setting 'memory_spread_cache' turns on the flag +Similarly, setting 'memory_spread_slab' turns on the flag PF_SPREAD_SLAB, and appropriately marked slab caches will allocate pages from the node returned by cpuset_mem_spread_node(). @@ -709,7 +709,10 @@ Now you want to do something with this cpuset. In this directory you can find several files: # ls -cpus cpu_exclusive mems mem_exclusive mem_hardwall tasks +cpu_exclusive memory_migrate mems tasks +cpus memory_pressure notify_on_release +mem_exclusive memory_spread_page sched_load_balance +mem_hardwall memory_spread_slab sched_relax_domain_level Reading them will give you information about the state of this cpuset: the CPUs and Memory Nodes it can use, the processes that are using -- cgit v1.2.3-70-g09d2 From 34397892a3d677d857fdaf8dec66a66b07dde0b5 Mon Sep 17 00:00:00 2001 From: Paul Jackson Date: Thu, 5 Jun 2008 22:46:09 -0700 Subject: doc: update to URL and status of kernel-docs.txt entry Update status and URL for the "Gary's Encyclopedia" entry. Signed-off-by: Paul Jackson Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/kernel-docs.txt | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'Documentation') diff --git a/Documentation/kernel-docs.txt b/Documentation/kernel-docs.txt index 5a4ef48224a..28cdc2af213 100644 --- a/Documentation/kernel-docs.txt +++ b/Documentation/kernel-docs.txt @@ -715,14 +715,14 @@ * Name: "Gary's Encyclopedia - The Linux Kernel" Author: Gary (I suppose...). - URL: http://www.lisoleg.net/cgi-bin/lisoleg.pl?view=kernel.htm - Keywords: links, not found here?. + URL: http://slencyclopedia.berlios.de/index.html + Keywords: linux, community, everything! Description: Gary's Encyclopedia exists to allow the rapid finding of documentation and other information of interest to GNU/Linux users. It has about 4000 links to external pages in 150 major categories. This link is for kernel-specific links, documents, - sites... Look there if you could not find here what you were - looking for. + sites... This list is now hosted by developer.Berlios.de, + but seems not to have been updated since sometime in 1999. * Name: "The home page of Linux-MM" Author: The Linux-MM team. -- cgit v1.2.3-70-g09d2 From 44d1b980c72db0faf35adb082fb2208351803028 Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Thu, 5 Jun 2008 22:46:18 -0700 Subject: Fix various old email addresses for dwmw2 Although if people have questions about ARCnet, perhaps it's _better_ for them to be mailing dwmw2@cam.ac.uk about it... Signed-off-by: David Woodhouse Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/networking/arcnet.txt | 2 +- arch/frv/kernel/cmode.S | 2 +- arch/frv/kernel/sleep.S | 2 +- arch/frv/mb93090-mb00/pci-dma-nommu.c | 2 +- drivers/mtd/redboot.c | 2 +- fs/afs/callback.c | 2 +- fs/afs/inode.c | 2 +- fs/afs/super.c | 2 +- include/linux/mtd/nand.h | 2 +- include/linux/tty.h | 2 +- 10 files changed, 10 insertions(+), 10 deletions(-) (limited to 'Documentation') diff --git a/Documentation/networking/arcnet.txt b/Documentation/networking/arcnet.txt index 770fc41a78e..79601254038 100644 --- a/Documentation/networking/arcnet.txt +++ b/Documentation/networking/arcnet.txt @@ -46,7 +46,7 @@ These are the ARCnet drivers for Linux. This new release (2.91) has been put together by David Woodhouse -, in an attempt to tidy up the driver after adding support +, in an attempt to tidy up the driver after adding support for yet another chipset. Now the generic support has been separated from the individual chipset drivers, and the source files aren't quite so packed with #ifdefs! I've changed this file a bit, but kept it in the first person from diff --git a/arch/frv/kernel/cmode.S b/arch/frv/kernel/cmode.S index 81ba28ad220..53deeb5d7e8 100644 --- a/arch/frv/kernel/cmode.S +++ b/arch/frv/kernel/cmode.S @@ -1,7 +1,7 @@ /* cmode.S: clock mode management * * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. - * Written by David Woodhouse (dwmw2@redhat.com) + * Written by David Woodhouse (dwmw2@infradead.org) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License diff --git a/arch/frv/kernel/sleep.S b/arch/frv/kernel/sleep.S index c9b2d51ab9a..f67bf73cd2c 100644 --- a/arch/frv/kernel/sleep.S +++ b/arch/frv/kernel/sleep.S @@ -1,7 +1,7 @@ /* sleep.S: power saving mode entry * * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. - * Written by David Woodhouse (dwmw2@redhat.com) + * Written by David Woodhouse (dwmw2@infradead.org) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License diff --git a/arch/frv/mb93090-mb00/pci-dma-nommu.c b/arch/frv/mb93090-mb00/pci-dma-nommu.c index 4985466b1a7..64ee58d748b 100644 --- a/arch/frv/mb93090-mb00/pci-dma-nommu.c +++ b/arch/frv/mb93090-mb00/pci-dma-nommu.c @@ -1,7 +1,7 @@ /* pci-dma-nommu.c: Dynamic DMA mapping support for the FRV * * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. - * Written by David Woodhouse (dwmw2@redhat.com) + * Written by David Woodhouse (dwmw2@infradead.org) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License diff --git a/drivers/mtd/redboot.c b/drivers/mtd/redboot.c index 47474903263..c5030f94f04 100644 --- a/drivers/mtd/redboot.c +++ b/drivers/mtd/redboot.c @@ -295,5 +295,5 @@ module_init(redboot_parser_init); module_exit(redboot_parser_exit); MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Red Hat, Inc. - David Woodhouse "); +MODULE_AUTHOR("David Woodhouse "); MODULE_DESCRIPTION("Parsing code for RedBoot Flash Image System (FIS) tables"); diff --git a/fs/afs/callback.c b/fs/afs/callback.c index a78d5b236bb..587ef5123cd 100644 --- a/fs/afs/callback.c +++ b/fs/afs/callback.c @@ -8,7 +8,7 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * - * Authors: David Woodhouse + * Authors: David Woodhouse * David Howells * */ diff --git a/fs/afs/inode.c b/fs/afs/inode.c index 08db82e1343..bb47217f6a1 100644 --- a/fs/afs/inode.c +++ b/fs/afs/inode.c @@ -8,7 +8,7 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * - * Authors: David Woodhouse + * Authors: David Woodhouse * David Howells * */ diff --git a/fs/afs/super.c b/fs/afs/super.c index 4b572b801d8..7e3faeef681 100644 --- a/fs/afs/super.c +++ b/fs/afs/super.c @@ -10,7 +10,7 @@ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * Authors: David Howells - * David Woodhouse + * David Woodhouse * */ diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index c42bc7f533a..53ea3dc8b0e 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -1,7 +1,7 @@ /* * linux/include/linux/mtd/nand.h * - * Copyright (c) 2000 David Woodhouse + * Copyright (c) 2000 David Woodhouse * Steven J. Hill * Thomas Gleixner * diff --git a/include/linux/tty.h b/include/linux/tty.h index 7f7121f9c96..324a3b231d4 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -36,7 +36,7 @@ #define N_6PACK 7 #define N_MASC 8 /* Reserved for Mobitex module */ #define N_R3964 9 /* Reserved for Simatic R3964 module */ -#define N_PROFIBUS_FDL 10 /* Reserved for Profibus */ +#define N_PROFIBUS_FDL 10 /* Reserved for Profibus */ #define N_IRDA 11 /* Linux IrDa - http://irda.sourceforge.net/ */ #define N_SMSBLOCK 12 /* SMS block mode - for talking to GSM data */ /* cards about SMS messages */ -- cgit v1.2.3-70-g09d2 From 0842b245a8e6c14e3aa49f91018902591d1069b3 Mon Sep 17 00:00:00 2001 From: Paul Jackson Date: Thu, 5 Jun 2008 22:46:45 -0700 Subject: doc: document the kernel-doc conventions for kernel hackers Provide documentation of the kernel-doc documentation conventions oriented to kernel hackers. Since I figure that there will be more people reading this kernel-doc-nano-HOWTO.txt file who are kernel developers focused on the rest of the kernel, than there will be readers of this file who are documentation developers extracting that embedded kernel-doc documentation, I have taken the liberty of making the new section added here: How to format kernel-doc comments the first section of the kernel-doc-nano-HOWTO.txt file. This first section is intended to introduce, motivate and provide basic usage of the kernel-doc mechanism for kernel hackers developing other portions of the kernel. Signed-off-by: Paul Jackson Acked-by: Randy Dunlap Cc: Alan Cox Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/kernel-doc-nano-HOWTO.txt | 99 +++++++++++++++++++++++++++++++++ 1 file changed, 99 insertions(+) (limited to 'Documentation') diff --git a/Documentation/kernel-doc-nano-HOWTO.txt b/Documentation/kernel-doc-nano-HOWTO.txt index 2075c0658bf..0bd32748a46 100644 --- a/Documentation/kernel-doc-nano-HOWTO.txt +++ b/Documentation/kernel-doc-nano-HOWTO.txt @@ -1,6 +1,105 @@ kernel-doc nano-HOWTO ===================== +How to format kernel-doc comments +--------------------------------- + +In order to provide embedded, 'C' friendly, easy to maintain, +but consistent and extractable documentation of the functions and +data structures in the Linux kernel, the Linux kernel has adopted +a consistent style for documenting functions and their parameters, +and structures and their members. + +The format for this documentation is called the kernel-doc format. +It is documented in this Documentation/kernel-doc-nano-HOWTO.txt file. + +This style embeds the documentation within the source files, using +a few simple conventions. The scripts/kernel-doc perl script, some +SGML templates in Documentation/DocBook, and other tools understand +these conventions, and are used to extract this embedded documentation +into various documents. + +In order to provide good documentation of kernel functions and data +structures, please use the following conventions to format your +kernel-doc comments in Linux kernel source. + +We definitely need kernel-doc formatted documentation for functions +that are exported to loadable modules using EXPORT_SYMBOL. + +We also look to provide kernel-doc formatted documentation for +functions externally visible to other kernel files (not marked +"static"). + +We also recommend providing kernel-doc formatted documentation +for private (file "static") routines, for consistency of kernel +source code layout. But this is lower priority and at the +discretion of the MAINTAINER of that kernel source file. + +Data structures visible in kernel include files should also be +documented using kernel-doc formatted comments. + +The opening comment mark "/**" is reserved for kernel-doc comments. +Only comments so marked will be considered by the kernel-doc scripts, +and any comment so marked must be in kernel-doc format. Do not use +"/**" to be begin a comment block unless the comment block contains +kernel-doc formatted comments. The closing comment marker for +kernel-doc comments can be either "*/" or "**/". + +Kernel-doc comments should be placed just before the function +or data structure being described. + +Example kernel-doc function comment: + +/** + * foobar() - short function description of foobar + * @arg1: Describe the first argument to foobar. + * @arg2: Describe the second argument to foobar. + * One can provide multiple line descriptions + * for arguments. + * + * A longer description, with more discussion of the function foobar() + * that might be useful to those using or modifying it. Begins with + * empty comment line, and may include additional embedded empty + * comment lines. + * + * The longer description can have multiple paragraphs. + **/ + +The first line, with the short description, must be on a single line. + +The @argument descriptions must begin on the very next line following +this opening short function description line, with no intervening +empty comment lines. + +Example kernel-doc data structure comment. + +/** + * struct blah - the basic blah structure + * @mem1: describe the first member of struct blah + * @mem2: describe the second member of struct blah, + * perhaps with more lines and words. + * + * Longer description of this structure. + **/ + +The kernel-doc function comments describe each parameter to the +function, in order, with the @name lines. + +The kernel-doc data structure comments describe each structure member +in the data structure, with the @name lines. + +The longer description formatting is "reflowed", losing your line +breaks. So presenting carefully formatted lists within these +descriptions won't work so well; derived documentation will lose +the formatting. + +See the section below "How to add extractable documentation to your +source files" for more details and notes on how to format kernel-doc +comments. + +Components of the kernel-doc system +----------------------------------- + Many places in the source tree have extractable documentation in the form of block comments above functions. The components of this system are: -- cgit v1.2.3-70-g09d2 From ef421be741a3e56cb89088a7dd4f73cc38739d1b Mon Sep 17 00:00:00 2001 From: Thomas Tuttle Date: Thu, 5 Jun 2008 22:46:59 -0700 Subject: pagemap: add documentation for pagemap Just a quick explanation of the pagemap interface from a userspace point of view, and an example of how to use it (in English, not code). Signed-off-by: Thomas Tuttle Cc: Matt Mackall Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/vm/pagemap.txt | 77 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 Documentation/vm/pagemap.txt (limited to 'Documentation') diff --git a/Documentation/vm/pagemap.txt b/Documentation/vm/pagemap.txt new file mode 100644 index 00000000000..ce72c0fe617 --- /dev/null +++ b/Documentation/vm/pagemap.txt @@ -0,0 +1,77 @@ +pagemap, from the userspace perspective +--------------------------------------- + +pagemap is a new (as of 2.6.25) set of interfaces in the kernel that allow +userspace programs to examine the page tables and related information by +reading files in /proc. + +There are three components to pagemap: + + * /proc/pid/pagemap. This file lets a userspace process find out which + physical frame each virtual page is mapped to. It contains one 64-bit + value for each virtual page, containing the following data (from + fs/proc/task_mmu.c, above pagemap_read): + + * Bits 0-55 page frame number (PFN) if present + * Bits 0-4 swap type if swapped + * Bits 5-55 swap offset if swapped + * Bits 55-60 page shift (page size = 1< Date: Tue, 3 Jun 2008 23:36:09 -0300 Subject: thinkpad-acpi: SW_RADIO to SW_RFKILL_ALL rename Rename SW_RADIO to SW_RFKILL_ALL in thinkpad-acpi code and docs, following 5adad0133907790c50283bf03271d920d6897043 "Input: rename SW_RADIO to SW_RFKILL_ALL". Signed-off-by: Henrique de Moraes Holschuh Signed-off-by: Len Brown --- Documentation/laptops/thinkpad-acpi.txt | 2 +- drivers/misc/thinkpad_acpi.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) (limited to 'Documentation') diff --git a/Documentation/laptops/thinkpad-acpi.txt b/Documentation/laptops/thinkpad-acpi.txt index 01c6c3d8a7e..64b3f146e4b 100644 --- a/Documentation/laptops/thinkpad-acpi.txt +++ b/Documentation/laptops/thinkpad-acpi.txt @@ -503,7 +503,7 @@ generate input device EV_KEY events. In addition to the EV_KEY events, thinkpad-acpi may also issue EV_SW events for switches: -SW_RADIO T60 and later hardare rfkill rocker switch +SW_RFKILL_ALL T60 and later hardare rfkill rocker switch SW_TABLET_MODE Tablet ThinkPads HKEY events 0x5009 and 0x500A Non hot-key ACPI HKEY event map: diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c index a0ce0b2fa03..f81e048c987 100644 --- a/drivers/misc/thinkpad_acpi.c +++ b/drivers/misc/thinkpad_acpi.c @@ -1293,7 +1293,7 @@ static void tpacpi_input_send_radiosw(void) mutex_lock(&tpacpi_inputdev_send_mutex); input_report_switch(tpacpi_inputdev, - SW_RADIO, !!wlsw); + SW_RFKILL_ALL, !!wlsw); input_sync(tpacpi_inputdev); mutex_unlock(&tpacpi_inputdev_send_mutex); @@ -2199,7 +2199,7 @@ static int __init hotkey_init(struct ibm_init_struct *iibm) if (tp_features.hotkey_wlsw) { set_bit(EV_SW, tpacpi_inputdev->evbit); - set_bit(SW_RADIO, tpacpi_inputdev->swbit); + set_bit(SW_RFKILL_ALL, tpacpi_inputdev->swbit); } if (tp_features.hotkey_tablet) { set_bit(EV_SW, tpacpi_inputdev->evbit); -- cgit v1.2.3-70-g09d2 From acccafe9ca63eac3a202d8805d286ada6ab8cced Mon Sep 17 00:00:00 2001 From: David Brigada Date: Wed, 11 Jun 2008 13:27:32 -0400 Subject: kobject: Documentation Spelling Patch Signed-off-by: David Brigada Signed-off-by: Greg Kroah-Hartman --- Documentation/kobject.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'Documentation') diff --git a/Documentation/kobject.txt b/Documentation/kobject.txt index bf3256e0402..51a8021ee53 100644 --- a/Documentation/kobject.txt +++ b/Documentation/kobject.txt @@ -305,7 +305,7 @@ should not be manipulated by any other user. A kset keeps its children in a standard kernel linked list. Kobjects point back to their containing kset via their kset field. In almost all cases, -the kobjects belonging to a ket have that kset (or, strictly, its embedded +the kobjects belonging to a kset have that kset (or, strictly, its embedded kobject) in their parent. As a kset contains a kobject within it, it should always be dynamically -- cgit v1.2.3-70-g09d2 From 45aec1ae72fc592f231e9e73ed9ed4d10cfbc0b5 Mon Sep 17 00:00:00 2001 From: "venkatesh.pallipadi@intel.com" Date: Tue, 18 Mar 2008 17:00:22 -0700 Subject: x86: PAT export resource_wc in pci sysfs For the ranges with IORESOURCE_PREFETCH, export a new resource_wc interface in pci /sysfs along with resource (which is uncached). Signed-off-by: Venkatesh Pallipadi Signed-off-by: Suresh Siddha Acked-by: Jesse Barnes Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- Documentation/filesystems/sysfs-pci.txt | 1 + drivers/pci/pci-sysfs.c | 84 ++++++++++++++++++++++++--------- include/linux/pci.h | 1 + 3 files changed, 64 insertions(+), 22 deletions(-) (limited to 'Documentation') diff --git a/Documentation/filesystems/sysfs-pci.txt b/Documentation/filesystems/sysfs-pci.txt index 5daa2aaec2c..68ef48839c0 100644 --- a/Documentation/filesystems/sysfs-pci.txt +++ b/Documentation/filesystems/sysfs-pci.txt @@ -36,6 +36,7 @@ files, each with their own function. local_cpus nearby CPU mask (cpumask, ro) resource PCI resource host addresses (ascii, ro) resource0..N PCI resource N, if present (binary, mmap) + resource0_wc..N_wc PCI WC map resource N, if prefetchable (binary, mmap) rom PCI ROM resource, if present (binary, ro) subsystem_device PCI subsystem device (ascii, ro) subsystem_vendor PCI subsystem vendor (ascii, ro) diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index 271d41cc05a..9ec7d3977a8 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -489,13 +489,14 @@ pci_mmap_legacy_mem(struct kobject *kobj, struct bin_attribute *attr, * @kobj: kobject for mapping * @attr: struct bin_attribute for the file being mapped * @vma: struct vm_area_struct passed into the mmap + * @write_combine: 1 for write_combine mapping * * Use the regular PCI mapping routines to map a PCI resource into userspace. * FIXME: write combining? maybe automatic for prefetchable regions? */ static int pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr, - struct vm_area_struct *vma) + struct vm_area_struct *vma, int write_combine) { struct pci_dev *pdev = to_pci_dev(container_of(kobj, struct device, kobj)); @@ -518,7 +519,21 @@ pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr, vma->vm_pgoff += start >> PAGE_SHIFT; mmap_type = res->flags & IORESOURCE_MEM ? pci_mmap_mem : pci_mmap_io; - return pci_mmap_page_range(pdev, vma, mmap_type, 0); + return pci_mmap_page_range(pdev, vma, mmap_type, write_combine); +} + +static int +pci_mmap_resource_uc(struct kobject *kobj, struct bin_attribute *attr, + struct vm_area_struct *vma) +{ + return pci_mmap_resource(kobj, attr, vma, 0); +} + +static int +pci_mmap_resource_wc(struct kobject *kobj, struct bin_attribute *attr, + struct vm_area_struct *vma) +{ + return pci_mmap_resource(kobj, attr, vma, 1); } /** @@ -541,9 +556,46 @@ pci_remove_resource_files(struct pci_dev *pdev) sysfs_remove_bin_file(&pdev->dev.kobj, res_attr); kfree(res_attr); } + + res_attr = pdev->res_attr_wc[i]; + if (res_attr) { + sysfs_remove_bin_file(&pdev->dev.kobj, res_attr); + kfree(res_attr); + } } } +static int pci_create_attr(struct pci_dev *pdev, int num, int write_combine) +{ + /* allocate attribute structure, piggyback attribute name */ + int name_len = write_combine ? 13 : 10; + struct bin_attribute *res_attr; + int retval; + + res_attr = kzalloc(sizeof(*res_attr) + name_len, GFP_ATOMIC); + if (res_attr) { + char *res_attr_name = (char *)(res_attr + 1); + + if (write_combine) { + pdev->res_attr_wc[num] = res_attr; + sprintf(res_attr_name, "resource%d_wc", num); + res_attr->mmap = pci_mmap_resource_wc; + } else { + pdev->res_attr[num] = res_attr; + sprintf(res_attr_name, "resource%d", num); + res_attr->mmap = pci_mmap_resource_uc; + } + res_attr->attr.name = res_attr_name; + res_attr->attr.mode = S_IRUSR | S_IWUSR; + res_attr->size = pci_resource_len(pdev, num); + res_attr->private = &pdev->resource[num]; + retval = sysfs_create_bin_file(&pdev->dev.kobj, res_attr); + } else + retval = -ENOMEM; + + return retval; +} + /** * pci_create_resource_files - create resource files in sysfs for @dev * @dev: dev in question @@ -557,31 +609,19 @@ static int pci_create_resource_files(struct pci_dev *pdev) /* Expose the PCI resources from this device as files */ for (i = 0; i < PCI_ROM_RESOURCE; i++) { - struct bin_attribute *res_attr; /* skip empty resources */ if (!pci_resource_len(pdev, i)) continue; - /* allocate attribute structure, piggyback attribute name */ - res_attr = kzalloc(sizeof(*res_attr) + 10, GFP_ATOMIC); - if (res_attr) { - char *res_attr_name = (char *)(res_attr + 1); - - pdev->res_attr[i] = res_attr; - sprintf(res_attr_name, "resource%d", i); - res_attr->attr.name = res_attr_name; - res_attr->attr.mode = S_IRUSR | S_IWUSR; - res_attr->size = pci_resource_len(pdev, i); - res_attr->mmap = pci_mmap_resource; - res_attr->private = &pdev->resource[i]; - retval = sysfs_create_bin_file(&pdev->dev.kobj, res_attr); - if (retval) { - pci_remove_resource_files(pdev); - return retval; - } - } else { - return -ENOMEM; + retval = pci_create_attr(pdev, i, 0); + /* for prefetchable resources, create a WC mappable file */ + if (!retval && pdev->resource[i].flags & IORESOURCE_PREFETCH) + retval = pci_create_attr(pdev, i, 1); + + if (retval) { + pci_remove_resource_files(pdev); + return retval; } } return 0; diff --git a/include/linux/pci.h b/include/linux/pci.h index 509159bcd4e..d18b1dd49fa 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -206,6 +206,7 @@ struct pci_dev { struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */ int rom_attr_enabled; /* has display of the rom attribute been enabled? */ struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */ + struct bin_attribute *res_attr_wc[DEVICE_COUNT_RESOURCE]; /* sysfs file for WC mapping of resources */ #ifdef CONFIG_PCI_MSI struct list_head msi_list; #endif -- cgit v1.2.3-70-g09d2 From 24aac480e76c6f5d1391ac05c5e9c0eb9b0cd302 Mon Sep 17 00:00:00 2001 From: Mike Miller Date: Thu, 12 Jun 2008 15:21:34 -0700 Subject: cciss: add new hardware support Add support for the next generation of HP Smart Array SAS/SATA controllers. Shipping date is late Fall 2008. Bump the driver version to 3.6.20 to reflect the new hardware support from patch 1 of this set. Signed-off-by: Mike Miller Cc: Jens Axboe Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/cciss.txt | 5 +++++ drivers/block/cciss.c | 21 ++++++++++++++++----- include/linux/pci_ids.h | 1 + 3 files changed, 22 insertions(+), 5 deletions(-) (limited to 'Documentation') diff --git a/Documentation/cciss.txt b/Documentation/cciss.txt index e65736c6b8b..63e59b8847c 100644 --- a/Documentation/cciss.txt +++ b/Documentation/cciss.txt @@ -21,6 +21,11 @@ This driver is known to work with the following cards: * SA E200 * SA E200i * SA E500 + * SA P212 + * SA P410 + * SA P410i + * SA P411 + * SA P812 Detecting drive failures: ------------------------- diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index e336b05fe4a..5f1e1cc6165 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -53,15 +53,16 @@ #include #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin)) -#define DRIVER_NAME "HP CISS Driver (v 3.6.14)" -#define DRIVER_VERSION CCISS_DRIVER_VERSION(3,6,14) +#define DRIVER_NAME "HP CISS Driver (v 3.6.20)" +#define DRIVER_VERSION CCISS_DRIVER_VERSION(3, 6, 20) /* Embedded module documentation macros - see modules.h */ MODULE_AUTHOR("Hewlett-Packard Company"); -MODULE_DESCRIPTION("Driver for HP Controller SA5xxx SA6xxx version 3.6.14"); +MODULE_DESCRIPTION("Driver for HP Smart Array Controllers"); MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400" - " SA6i P600 P800 P400 P400i E200 E200i E500"); -MODULE_VERSION("3.6.14"); + " SA6i P600 P800 P400 P400i E200 E200i E500 P700m" + " Smart Array G2 Series SAS/SATA Controllers"); +MODULE_VERSION("3.6.20"); MODULE_LICENSE("GPL"); #include "cciss_cmd.h" @@ -90,6 +91,11 @@ static const struct pci_device_id cciss_pci_device_id[] = { {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3215}, {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3237}, {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x323D}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249}, {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, {0,} @@ -123,6 +129,11 @@ static struct board_type products[] = { {0x3215103C, "Smart Array E200i", &SA5_access, 120}, {0x3237103C, "Smart Array E500", &SA5_access, 512}, {0x323D103C, "Smart Array P700m", &SA5_access, 512}, + {0x3241103C, "Smart Array P212", &SA5_access, 384}, + {0x3243103C, "Smart Array P410", &SA5_access, 384}, + {0x3245103C, "Smart Array P410i", &SA5_access, 384}, + {0x3247103C, "Smart Array P411", &SA5_access, 384}, + {0x3249103C, "Smart Array P812", &SA5_access, 384}, {0xFFFF103C, "Unknown Smart Array", &SA5_access, 120}, }; diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 9b940e64417..eafc9d6d2b3 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -716,6 +716,7 @@ #define PCI_DEVICE_ID_HP_CISSA 0x3220 #define PCI_DEVICE_ID_HP_CISSC 0x3230 #define PCI_DEVICE_ID_HP_CISSD 0x3238 +#define PCI_DEVICE_ID_HP_CISSE 0x323a #define PCI_DEVICE_ID_HP_ZX2_IOC 0x4031 #define PCI_VENDOR_ID_PCTECH 0x1042 -- cgit v1.2.3-70-g09d2 From 30e0e178193d4221abc9926b07a4c7661c7cc4a9 Mon Sep 17 00:00:00 2001 From: Li Zefan Date: Tue, 13 May 2008 10:27:17 +0800 Subject: cpuset: limit the input of cpuset.sched_relax_domain_level We allow the inputs to be [-1 ... SD_LV_MAX), and return -EINVAL for inputs outside this range. Signed-off-by: Li Zefan Acked-by: Paul Menage Acked-by: Paul Jackson Acked-by: Hidetoshi Seto Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- Documentation/cpusets.txt | 2 +- kernel/cpuset.c | 4 ++-- kernel/sched.c | 7 ++++++- 3 files changed, 9 insertions(+), 4 deletions(-) (limited to 'Documentation') diff --git a/Documentation/cpusets.txt b/Documentation/cpusets.txt index d803c5c68ab..353504de308 100644 --- a/Documentation/cpusets.txt +++ b/Documentation/cpusets.txt @@ -542,7 +542,7 @@ otherwise initial value -1 that indicates the cpuset has no request. 2 : search cores in a package. 3 : search cpus in a node [= system wide on non-NUMA system] ( 4 : search nodes in a chunk of node [on NUMA system] ) - ( 5~ : search system wide [on NUMA system]) + ( 5 : search system wide [on NUMA system] ) This file is per-cpuset and affect the sched domain where the cpuset belongs to. Therefore if the flag 'sched_load_balance' of a cpuset diff --git a/kernel/cpuset.c b/kernel/cpuset.c index 039baa4cd90..66103a119bf 100644 --- a/kernel/cpuset.c +++ b/kernel/cpuset.c @@ -1037,8 +1037,8 @@ int current_cpuset_is_being_rebound(void) static int update_relax_domain_level(struct cpuset *cs, s64 val) { - if ((int)val < 0) - val = -1; + if (val < -1 || val >= SD_LV_MAX) + return -EINVAL; if (val != cs->relax_domain_level) { cs->relax_domain_level = val; diff --git a/kernel/sched.c b/kernel/sched.c index eaf6751e761..bb2c699c9f5 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -6877,7 +6877,12 @@ static int default_relax_domain_level = -1; static int __init setup_relax_domain_level(char *str) { - default_relax_domain_level = simple_strtoul(str, NULL, 0); + unsigned long val; + + val = simple_strtoul(str, NULL, 0); + if (val < SD_LV_MAX) + default_relax_domain_level = val; + return 1; } __setup("relax_domain_level=", setup_relax_domain_level); -- cgit v1.2.3-70-g09d2 From 125ff8087fca28e922e7ad6e082efcf04fe2f0f4 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Sat, 23 Feb 2008 10:57:53 +0100 Subject: hwmon: Update the sysfs interface documentation * Document the characteristics of libsensors 3.0.0 and 3.0.1. * The sysfs interface is no longer subject to changes. Signed-off-by: Jean Delvare Acked-by: Juerg Haefliger Signed-off-by: Mark M. Hoffman --- Documentation/hwmon/sysfs-interface | 33 +++++++++++++-------------------- 1 file changed, 13 insertions(+), 20 deletions(-) (limited to 'Documentation') diff --git a/Documentation/hwmon/sysfs-interface b/Documentation/hwmon/sysfs-interface index f4a8ebc1ef1..2d845730d4e 100644 --- a/Documentation/hwmon/sysfs-interface +++ b/Documentation/hwmon/sysfs-interface @@ -2,17 +2,12 @@ Naming and data format standards for sysfs files ------------------------------------------------ The libsensors library offers an interface to the raw sensors data -through the sysfs interface. See libsensors documentation and source for -further information. As of writing this document, libsensors -(from lm_sensors 2.8.3) is heavily chip-dependent. Adding or updating -support for any given chip requires modifying the library's code. -This is because libsensors was written for the procfs interface -older kernel modules were using, which wasn't standardized enough. -Recent versions of libsensors (from lm_sensors 2.8.2 and later) have -support for the sysfs interface, though. - -The new sysfs interface was designed to be as chip-independent as -possible. +through the sysfs interface. Since lm-sensors 3.0.0, libsensors is +completely chip-independent. It assumes that all the kernel drivers +implement the standard sysfs interface described in this document. +This makes adding or updating support for any given chip very easy, as +libsensors, and applications using it, do not need to be modified. +This is a major improvement compared to lm-sensors 2. Note that motherboards vary widely in the connections to sensor chips. There is no standard that ensures, for example, that the second @@ -35,19 +30,17 @@ access this data in a simple and consistent way. That said, such programs will have to implement conversion, labeling and hiding of inputs. For this reason, it is still not recommended to bypass the library. -If you are developing a userspace application please send us feedback on -this standard. - -Note that this standard isn't completely established yet, so it is subject -to changes. If you are writing a new hardware monitoring driver those -features can't seem to fit in this interface, please contact us with your -extension proposal. Keep in mind that backward compatibility must be -preserved. - Each chip gets its own directory in the sysfs /sys/devices tree. To find all sensor chips, it is easier to follow the device symlinks from /sys/class/hwmon/hwmon*. +Up to lm-sensors 3.0.0, libsensors looks for hardware monitoring attributes +in the "physical" device directory. Since lm-sensors 3.0.1, attributes found +in the hwmon "class" device directory are also supported. Complex drivers +(e.g. drivers for multifunction chips) may want to use this possibility to +avoid namespace pollution. The only drawback will be that older versions of +libsensors won't support the driver in question. + All sysfs values are fixed point numbers. There is only one value per file, unlike the older /proc specification. -- cgit v1.2.3-70-g09d2 From a606b5e24b7e2937604f4c85023d8d9c5ab0a28b Mon Sep 17 00:00:00 2001 From: Jason Wessel Date: Tue, 24 Jun 2008 10:52:55 -0500 Subject: kgdb: documentation update - remove kgdboe kgdboe is not presently included kgdb, and there should be no references to it. Also fix the tcp port terminal connection example. Signed-off-by: Jason Wessel --- Documentation/DocBook/kgdb.tmpl | 20 ++++++-------------- 1 file changed, 6 insertions(+), 14 deletions(-) (limited to 'Documentation') diff --git a/Documentation/DocBook/kgdb.tmpl b/Documentation/DocBook/kgdb.tmpl index 028a8444d95..e8acd1f0345 100644 --- a/Documentation/DocBook/kgdb.tmpl +++ b/Documentation/DocBook/kgdb.tmpl @@ -84,10 +84,9 @@ runs an instance of gdb against the vmlinux file which contains the symbols (not boot image such as bzImage, zImage, uImage...). In gdb the developer specifies the connection parameters and - connects to kgdb. Depending on which kgdb I/O modules exist in - the kernel for a given architecture, it may be possible to debug - the test machine's kernel with the development machine using a - rs232 or ethernet connection. + connects to kgdb. The type of connection a developer makes with + gdb depends on the availability of kgdb I/O modules compiled as + builtin's or kernel modules in the test machine's kernel. @@ -223,7 +222,7 @@ IMPORTANT NOTE: Using this option with kgdb over the console - (kgdboc) or kgdb over ethernet (kgdboe) is not supported. + (kgdboc) is not supported. @@ -249,18 +248,11 @@ (gdb) target remote /dev/ttyS0 - Example (kgdb to a terminal server): + Example (kgdb to a terminal server on tcp port 2012): % gdb ./vmlinux - (gdb) target remote udp:192.168.2.2:6443 - - - Example (kgdb over ethernet): - - - % gdb ./vmlinux - (gdb) target remote udp:192.168.2.2:6443 + (gdb) target remote 192.168.2.2:2012 Once connected, you can debug a kernel the way you would debug an -- cgit v1.2.3-70-g09d2 From 16d752397301b95abaa95cbaf9e785d221872311 Mon Sep 17 00:00:00 2001 From: Rene Herman Date: Tue, 24 Jun 2008 19:38:56 +0200 Subject: thermal: Create CONFIG_THERMAL_HWMON=n A bug in libsensors <= 2.10.6 is exposed when this new hwmon I/F is enabled. Create CONFIG_THERMAL_HWMON=n until some time after libsensors 2.10.7 ships so those users can run the latest kernel. libsensors 3.x is already fixed -- those users can use CONFIG_THERMAL_HWMON=y now. Signed-off-by: Rene Herman Acked-by: Mark M. Hoffman Signed-off-by: Len Brown --- Documentation/feature-removal-schedule.txt | 9 +++++++++ drivers/thermal/Kconfig | 9 +++++++++ drivers/thermal/thermal_sys.c | 4 ++-- include/linux/thermal.h | 6 ++---- 4 files changed, 22 insertions(+), 6 deletions(-) (limited to 'Documentation') diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt index 5b3f31faed5..46ece3fba6f 100644 --- a/Documentation/feature-removal-schedule.txt +++ b/Documentation/feature-removal-schedule.txt @@ -312,3 +312,12 @@ When: 2.6.26 Why: Implementation became generic; users should now include linux/semaphore.h instead. Who: Matthew Wilcox + +--------------------------- + +What: CONFIG_THERMAL_HWMON +When: January 2009 +Why: This option was introduced just to allow older lm-sensors userspace + to keep working over the upgrade to 2.6.26. At the scheduled time of + removal fixed lm-sensors (2.x or 3.x) should be readily available. +Who: Rene Herman diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig index 4b628526df0..a86e952ed4c 100644 --- a/drivers/thermal/Kconfig +++ b/drivers/thermal/Kconfig @@ -12,3 +12,12 @@ menuconfig THERMAL cooling devices. All platforms with ACPI thermal support can use this driver. If you want this support, you should say Y or M here. + +config THERMAL_HWMON + bool "Hardware monitoring support" + depends on HWMON=y || HWMON=THERMAL + help + The generic thermal sysfs driver's hardware monitoring support + requires a 2.10.7/3.0.2 or later lm-sensors userspace. + + Say Y if your user-space is new enough. diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c index 6098787341f..fe07462d594 100644 --- a/drivers/thermal/thermal_sys.c +++ b/drivers/thermal/thermal_sys.c @@ -295,8 +295,8 @@ thermal_cooling_device_trip_point_show(struct device *dev, /* Device management */ -#if defined(CONFIG_HWMON) || \ - (defined(CONFIG_HWMON_MODULE) && defined(CONFIG_THERMAL_MODULE)) +#if defined(CONFIG_THERMAL_HWMON) + /* hwmon sys I/F */ #include static LIST_HEAD(thermal_hwmon_list); diff --git a/include/linux/thermal.h b/include/linux/thermal.h index 06d3e6eb9ca..917707e6151 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -66,8 +66,7 @@ struct thermal_cooling_device { ((long)t-2732+5)/10 : ((long)t-2732-5)/10) #define CELSIUS_TO_KELVIN(t) ((t)*10+2732) -#if defined(CONFIG_HWMON) || \ - (defined(CONFIG_HWMON_MODULE) && defined(CONFIG_THERMAL_MODULE)) +#if defined(CONFIG_THERMAL_HWMON) /* thermal zone devices with the same type share one hwmon device */ struct thermal_hwmon_device { char type[THERMAL_NAME_LENGTH]; @@ -94,8 +93,7 @@ struct thermal_zone_device { struct idr idr; struct mutex lock; /* protect cooling devices list */ struct list_head node; -#if defined(CONFIG_HWMON) || \ - (defined(CONFIG_HWMON_MODULE) && defined(CONFIG_THERMAL_MODULE)) +#if defined(CONFIG_THERMAL_HWMON) struct list_head hwmon_node; struct thermal_hwmon_device *hwmon; struct thermal_hwmon_attr temp_input; /* hwmon sys attr */ -- cgit v1.2.3-70-g09d2 From 104fe9a2d2a56f25fb95800a7ab0f7600dd6879c Mon Sep 17 00:00:00 2001 From: Michael Krufky Date: Fri, 13 Jun 2008 03:29:43 -0300 Subject: V4L/DVB (8043): au0828: add support for additional USB device id's Signed-off-by: Michael Krufky Signed-off-by: Mauro Carvalho Chehab --- Documentation/video4linux/CARDLIST.au0828 | 2 +- drivers/media/video/au0828/au0828-cards.c | 18 ++++++++++++++++++ 2 files changed, 19 insertions(+), 1 deletion(-) (limited to 'Documentation') diff --git a/Documentation/video4linux/CARDLIST.au0828 b/Documentation/video4linux/CARDLIST.au0828 index aaae360312e..86d1c8e7b18 100644 --- a/Documentation/video4linux/CARDLIST.au0828 +++ b/Documentation/video4linux/CARDLIST.au0828 @@ -1,4 +1,4 @@ 0 -> Unknown board (au0828) - 1 -> Hauppauge HVR950Q (au0828) [2040:7200] + 1 -> Hauppauge HVR950Q (au0828) [2040:7200,2040:7210,2040:7217,2040:721b,2040:721f,2040:7280,0fd9:0008] 2 -> Hauppauge HVR850 (au0828) [2040:7240] 3 -> DViCO FusionHDTV USB (au0828) [0fe9:d620] diff --git a/drivers/media/video/au0828/au0828-cards.c b/drivers/media/video/au0828/au0828-cards.c index a2a6983444f..898e12395e7 100644 --- a/drivers/media/video/au0828/au0828-cards.c +++ b/drivers/media/video/au0828/au0828-cards.c @@ -77,8 +77,14 @@ static void hauppauge_eeprom(struct au0828_dev *dev, u8 *eeprom_data) /* Make sure we support the board model */ switch (tv.model) { + case 72000: /* WinTV-HVR950q (Retail, IR, ATSC/QAM */ case 72001: /* WinTV-HVR950q (Retail, IR, ATSC/QAM and basic analog video */ + case 72211: /* WinTV-HVR950q (OEM, IR, ATSC/QAM and basic analog video */ + case 72221: /* WinTV-HVR950q (OEM, IR, ATSC/QAM and basic analog video */ + case 72231: /* WinTV-HVR950q (OEM, IR, ATSC/QAM and basic analog video */ + case 72241: /* WinTV-HVR950q (OEM, No IR, ATSC/QAM and basic analog video */ case 72301: /* WinTV-HVR850 (Retail, IR, ATSC and basic analog video */ + case 72500: /* WinTV-HVR950q (OEM, No IR, ATSC/QAM */ break; default: printk(KERN_WARNING "%s: warning: " @@ -175,6 +181,18 @@ struct usb_device_id au0828_usb_id_table [] = { .driver_info = AU0828_BOARD_HAUPPAUGE_HVR850 }, { USB_DEVICE(0x0fe9, 0xd620), .driver_info = AU0828_BOARD_DVICO_FUSIONHDTV7 }, + { USB_DEVICE(0x2040, 0x7210), + .driver_info = AU0828_BOARD_HAUPPAUGE_HVR950Q }, + { USB_DEVICE(0x2040, 0x7217), + .driver_info = AU0828_BOARD_HAUPPAUGE_HVR950Q }, + { USB_DEVICE(0x2040, 0x721b), + .driver_info = AU0828_BOARD_HAUPPAUGE_HVR950Q }, + { USB_DEVICE(0x2040, 0x721f), + .driver_info = AU0828_BOARD_HAUPPAUGE_HVR950Q }, + { USB_DEVICE(0x2040, 0x7280), + .driver_info = AU0828_BOARD_HAUPPAUGE_HVR950Q }, + { USB_DEVICE(0x0fd9, 0x0008), + .driver_info = AU0828_BOARD_HAUPPAUGE_HVR950Q }, { }, }; -- cgit v1.2.3-70-g09d2 From f471f92339860c35b561cf45ad563ab1ff07c386 Mon Sep 17 00:00:00 2001 From: Michal Schmidt Date: Thu, 26 Jun 2008 16:06:19 +0200 Subject: s2io: fix documentation about intr_type The documentation for intr_type module parameter of the s2io driver is not consistent with the code. The comments in drivers/net/s2io.c are OK, but Documentation/networking/s2io.txt is wrong. Pointed out by Andrew Hecox. Signed-off-by: Michal Schmidt Signed-off-by: Jeff Garzik --- Documentation/networking/s2io.txt | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'Documentation') diff --git a/Documentation/networking/s2io.txt b/Documentation/networking/s2io.txt index 4bde53e85f3..1e28e2ddb90 100644 --- a/Documentation/networking/s2io.txt +++ b/Documentation/networking/s2io.txt @@ -83,9 +83,9 @@ Valid range: Limited by memory on system Default: 30 e. intr_type -Specifies interrupt type. Possible values 1(INTA), 2(MSI), 3(MSI-X) -Valid range: 1-3 -Default: 1 +Specifies interrupt type. Possible values 0(INTA), 2(MSI-X) +Valid values: 0, 2 +Default: 2 5. Performance suggestions General: -- cgit v1.2.3-70-g09d2 From 2260e63a2f313f416b31af80d02f02ef92d20d78 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Tue, 1 Jul 2008 22:38:18 +0200 Subject: i2c: Documentation: fix device matching description The matching process described for new style clients in Documentation/i2c/writing-clients is classed as out-of-date as it requires the presence of an .id_table entry in the driver's i2c_driver entry. Signed-off-by: Ben Dooks Signed-off-by: Jean Delvare --- Documentation/i2c/writing-clients | 18 ++++++++++++++---- 1 file changed, 14 insertions(+), 4 deletions(-) (limited to 'Documentation') diff --git a/Documentation/i2c/writing-clients b/Documentation/i2c/writing-clients index ee75cbace28..d4cd4126d1a 100644 --- a/Documentation/i2c/writing-clients +++ b/Documentation/i2c/writing-clients @@ -25,12 +25,23 @@ routines, and should be zero-initialized except for fields with data you provide. A client structure holds device-specific information like the driver model device node, and its I2C address. +/* iff driver uses driver model ("new style") binding model: */ + +static struct i2c_device_id foo_idtable[] = { + { "foo", my_id_for_foo }, + { "bar", my_id_for_bar }, + { } +}; + +MODULE_DEVICE_TABLE(i2c, foo_idtable); + static struct i2c_driver foo_driver = { .driver = { .name = "foo", }, /* iff driver uses driver model ("new style") binding model: */ + .id_table = foo_ids, .probe = foo_probe, .remove = foo_remove, @@ -173,10 +184,9 @@ handle may be used during foo_probe(). If foo_probe() reports success (zero not a negative status code) it may save the handle and use it until foo_remove() returns. That binding model is used by most Linux drivers. -Drivers match devices when i2c_client.driver_name and the driver name are -the same; this approach is used in several other busses that don't have -device typing support in the hardware. The driver and module name should -match, so hotplug/coldplug mechanisms will modprobe the driver. +The probe function is called when an entry in the id_table name field +matches the device's name. It is passed the entry that was matched so +the driver knows which one in the table matched. Device Creation (Standard driver model) -- cgit v1.2.3-70-g09d2 From 77a538d5aa25a8866606a1faa4300c9aa2a59dfc Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Tue, 1 Jul 2008 17:22:48 -0700 Subject: ipv4: fix sysctl documentation of time related values These sysctl values are time related and all use the same routine (proc_dointvec_jiffies) that internally converts from seconds to jiffies. The code is fine, the documentation is just wrong. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- Documentation/networking/ip-sysctl.txt | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) (limited to 'Documentation') diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt index 17a6e46fbd4..17f1f91af35 100644 --- a/Documentation/networking/ip-sysctl.txt +++ b/Documentation/networking/ip-sysctl.txt @@ -81,23 +81,23 @@ inet_peer_minttl - INTEGER Minimum time-to-live of entries. Should be enough to cover fragment time-to-live on the reassembling side. This minimum time-to-live is guaranteed if the pool size is less than inet_peer_threshold. - Measured in jiffies(1). + Measured in seconds. inet_peer_maxttl - INTEGER Maximum time-to-live of entries. Unused entries will expire after this period of time if there is no memory pressure on the pool (i.e. when the number of entries in the pool is very small). - Measured in jiffies(1). + Measured in seconds. inet_peer_gc_mintime - INTEGER Minimum interval between garbage collection passes. This interval is in effect under high memory pressure on the pool. - Measured in jiffies(1). + Measured in seconds. inet_peer_gc_maxtime - INTEGER Minimum interval between garbage collection passes. This interval is in effect under low (or absent) memory pressure on the pool. - Measured in jiffies(1). + Measured in seconds. TCP variables: @@ -794,10 +794,6 @@ tag - INTEGER Allows you to write a number, which can be used as required. Default value is 0. -(1) Jiffie: internal timeunit for the kernel. On the i386 1/100s, on the -Alpha 1/1024s. See the HZ define in /usr/include/asm/param.h for the exact -value on your system. - Alexey Kuznetsov. kuznet@ms2.inr.ac.ru -- cgit v1.2.3-70-g09d2 From cde53535991fbb5c34a1566f25955297c1487b8d Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Fri, 4 Jul 2008 09:59:22 -0700 Subject: Christoph has moved Remove all clameter@sgi.com addresses from the kernel tree since they will become invalid on June 27th. Change my maintainer email address for the slab allocators to cl@linux-foundation.org (which will be the new email address for the future). Signed-off-by: Christoph Lameter Signed-off-by: Christoph Lameter Cc: Pekka Enberg Cc: Stephen Rothwell Cc: Matt Mackall Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/vm/slabinfo.c | 4 ++-- Documentation/vm/slub.txt | 2 +- MAINTAINERS | 2 +- include/asm-generic/atomic.h | 2 +- include/linux/slab.h | 2 +- include/linux/slub_def.h | 2 +- kernel/workqueue.c | 2 +- lib/radix-tree.c | 2 +- mm/allocpercpu.c | 2 +- mm/migrate.c | 2 +- mm/slub.c | 2 +- mm/sparse-vmemmap.c | 2 +- 12 files changed, 13 insertions(+), 13 deletions(-) (limited to 'Documentation') diff --git a/Documentation/vm/slabinfo.c b/Documentation/vm/slabinfo.c index e4230ed16ee..df3227605d5 100644 --- a/Documentation/vm/slabinfo.c +++ b/Documentation/vm/slabinfo.c @@ -1,7 +1,7 @@ /* * Slabinfo: Tool to get reports about slabs * - * (C) 2007 sgi, Christoph Lameter + * (C) 2007 sgi, Christoph Lameter * * Compile by: * @@ -99,7 +99,7 @@ void fatal(const char *x, ...) void usage(void) { - printf("slabinfo 5/7/2007. (c) 2007 sgi. clameter@sgi.com\n\n" + printf("slabinfo 5/7/2007. (c) 2007 sgi.\n\n" "slabinfo [-ahnpvtsz] [-d debugopts] [slab-regexp]\n" "-a|--aliases Show aliases\n" "-A|--activity Most active slabs first\n" diff --git a/Documentation/vm/slub.txt b/Documentation/vm/slub.txt index 7c13f22a0c9..bb1f5c6e28b 100644 --- a/Documentation/vm/slub.txt +++ b/Documentation/vm/slub.txt @@ -266,4 +266,4 @@ of other objects. slub_debug=FZ,dentry -Christoph Lameter, , May 30, 2007 +Christoph Lameter, May 30, 2007 diff --git a/MAINTAINERS b/MAINTAINERS index 460e699fd28..13b7b19692e 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3672,7 +3672,7 @@ S: Maintained SLAB ALLOCATOR P: Christoph Lameter -M: clameter@sgi.com +M: cl@linux-foundation.org P: Pekka Enberg M: penberg@cs.helsinki.fi P: Matt Mackall diff --git a/include/asm-generic/atomic.h b/include/asm-generic/atomic.h index 85fd0aa27a8..4ec0a296bde 100644 --- a/include/asm-generic/atomic.h +++ b/include/asm-generic/atomic.h @@ -2,7 +2,7 @@ #define _ASM_GENERIC_ATOMIC_H /* * Copyright (C) 2005 Silicon Graphics, Inc. - * Christoph Lameter + * Christoph Lameter * * Allows to provide arch independent atomic definitions without the need to * edit all arch specific atomic.h files. diff --git a/include/linux/slab.h b/include/linux/slab.h index c2ad3501659..9aa90a6f20e 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -1,7 +1,7 @@ /* * Written by Mark Hemment, 1996 (markhe@nextd.demon.co.uk). * - * (C) SGI 2006, Christoph Lameter + * (C) SGI 2006, Christoph Lameter * Cleaned up and restructured to ease the addition of alternative * implementations of SLAB allocators. */ diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h index cef6f8fddd7..d117ea2825a 100644 --- a/include/linux/slub_def.h +++ b/include/linux/slub_def.h @@ -4,7 +4,7 @@ /* * SLUB : A Slab allocator without object queues. * - * (C) 2007 SGI, Christoph Lameter + * (C) 2007 SGI, Christoph Lameter */ #include #include diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 29fc39f1029..ce7799540c9 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -13,7 +13,7 @@ * Kai Petzke * Theodore Ts'o * - * Made to use alloc_percpu by Christoph Lameter . + * Made to use alloc_percpu by Christoph Lameter. */ #include diff --git a/lib/radix-tree.c b/lib/radix-tree.c index 169a2f8dabc..56ec21a7f73 100644 --- a/lib/radix-tree.c +++ b/lib/radix-tree.c @@ -1,7 +1,7 @@ /* * Copyright (C) 2001 Momchil Velikov * Portions Copyright (C) 2001 Christoph Hellwig - * Copyright (C) 2005 SGI, Christoph Lameter + * Copyright (C) 2005 SGI, Christoph Lameter * Copyright (C) 2006 Nick Piggin * * This program is free software; you can redistribute it and/or diff --git a/mm/allocpercpu.c b/mm/allocpercpu.c index f4026bae6ee..05f2b4009cc 100644 --- a/mm/allocpercpu.c +++ b/mm/allocpercpu.c @@ -1,7 +1,7 @@ /* * linux/mm/allocpercpu.c * - * Separated from slab.c August 11, 2006 Christoph Lameter + * Separated from slab.c August 11, 2006 Christoph Lameter */ #include #include diff --git a/mm/migrate.c b/mm/migrate.c index 112bcaeaa10..55bd355d170 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -9,7 +9,7 @@ * IWAMOTO Toshihiro * Hirokazu Takahashi * Dave Hansen - * Christoph Lameter + * Christoph Lameter */ #include diff --git a/mm/slub.c b/mm/slub.c index 2c9a62d1f42..1a427c0ae83 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -5,7 +5,7 @@ * The allocator synchronizes using per slab locks and only * uses a centralized lock to manage a pool of partial slabs. * - * (C) 2007 SGI, Christoph Lameter + * (C) 2007 SGI, Christoph Lameter */ #include diff --git a/mm/sparse-vmemmap.c b/mm/sparse-vmemmap.c index 99c4f36eb8a..a91b5f8fcaf 100644 --- a/mm/sparse-vmemmap.c +++ b/mm/sparse-vmemmap.c @@ -1,7 +1,7 @@ /* * Virtual Memory Map support * - * (C) 2007 sgi. Christoph Lameter . + * (C) 2007 sgi. Christoph Lameter. * * Virtual memory maps allow VM primitives pfn_to_page, page_to_pfn, * virt_to_page, page_address() to be implemented as a base offset -- cgit v1.2.3-70-g09d2 From 450c622e9ff19888818d4e2c4d31adb97a5242b2 Mon Sep 17 00:00:00 2001 From: Miguel Ojeda Date: Fri, 4 Jul 2008 09:59:33 -0700 Subject: Miguel Ojeda has moved Signed-off-by: Miguel Ojeda Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- CREDITS | 5 +++-- Documentation/auxdisplay/cfag12864b | 4 ++-- Documentation/auxdisplay/cfag12864b-example.c | 2 +- Documentation/auxdisplay/ks0108 | 4 ++-- MAINTAINERS | 20 ++++++++++++-------- drivers/auxdisplay/Kconfig | 2 +- drivers/auxdisplay/cfag12864b.c | 4 ++-- drivers/auxdisplay/cfag12864bfb.c | 4 ++-- drivers/auxdisplay/ks0108.c | 4 ++-- include/linux/cfag12864b.h | 2 +- include/linux/ks0108.h | 2 +- 11 files changed, 29 insertions(+), 24 deletions(-) (limited to 'Documentation') diff --git a/CREDITS b/CREDITS index 8fec7b3f96d..e97bea06b59 100644 --- a/CREDITS +++ b/CREDITS @@ -2611,8 +2611,9 @@ S: Perth, Western Australia S: Australia N: Miguel Ojeda Sandonis -E: maxextreme@gmail.com -W: http://maxextreme.googlepages.com/ +E: miguel.ojeda.sandonis@gmail.com +W: http://miguelojeda.es +W: http://jair.lab.fi.uva.es/~migojed/ D: Author of the ks0108, cfag12864b and cfag12864bfb auxiliary display drivers. D: Maintainer of the auxiliary display drivers tree (drivers/auxdisplay/*) S: C/ Mieses 20, 9-B diff --git a/Documentation/auxdisplay/cfag12864b b/Documentation/auxdisplay/cfag12864b index b714183d412..eb7be393a51 100644 --- a/Documentation/auxdisplay/cfag12864b +++ b/Documentation/auxdisplay/cfag12864b @@ -3,7 +3,7 @@ =================================== License: GPLv2 -Author & Maintainer: Miguel Ojeda Sandonis +Author & Maintainer: Miguel Ojeda Sandonis Date: 2006-10-27 @@ -22,7 +22,7 @@ Date: 2006-10-27 1. DRIVER INFORMATION --------------------- -This driver support one cfag12864b display at time. +This driver supports a cfag12864b LCD. --------------------- diff --git a/Documentation/auxdisplay/cfag12864b-example.c b/Documentation/auxdisplay/cfag12864b-example.c index 7bfac354d4c..2caeea5e499 100644 --- a/Documentation/auxdisplay/cfag12864b-example.c +++ b/Documentation/auxdisplay/cfag12864b-example.c @@ -4,7 +4,7 @@ * Description: cfag12864b LCD userspace example program * License: GPLv2 * - * Author: Copyright (C) Miguel Ojeda Sandonis + * Author: Copyright (C) Miguel Ojeda Sandonis * Date: 2006-10-31 * * This program is free software; you can redistribute it and/or modify diff --git a/Documentation/auxdisplay/ks0108 b/Documentation/auxdisplay/ks0108 index 92b03b60c61..8ddda0c8cee 100644 --- a/Documentation/auxdisplay/ks0108 +++ b/Documentation/auxdisplay/ks0108 @@ -3,7 +3,7 @@ ========================================== License: GPLv2 -Author & Maintainer: Miguel Ojeda Sandonis +Author & Maintainer: Miguel Ojeda Sandonis Date: 2006-10-27 @@ -21,7 +21,7 @@ Date: 2006-10-27 1. DRIVER INFORMATION --------------------- -This driver support the ks0108 LCD controller. +This driver supports the ks0108 LCD controller. --------------------- diff --git a/MAINTAINERS b/MAINTAINERS index 13b7b19692e..ba7ac13aba9 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -763,9 +763,10 @@ S: Maintained AUXILIARY DISPLAY DRIVERS P: Miguel Ojeda Sandonis -M: maxextreme@gmail.com +M: miguel.ojeda.sandonis@gmail.com L: linux-kernel@vger.kernel.org -W: http://auxdisplay.googlepages.com/ +W: http://miguelojeda.es/auxdisplay.htm +W: http://jair.lab.fi.uva.es/~migojed/auxdisplay.htm S: Maintained AVR32 ARCHITECTURE @@ -1055,16 +1056,18 @@ S: Supported CFAG12864B LCD DRIVER P: Miguel Ojeda Sandonis -M: maxextreme@gmail.com +M: miguel.ojeda.sandonis@gmail.com L: linux-kernel@vger.kernel.org -W: http://auxdisplay.googlepages.com/ +W: http://miguelojeda.es/auxdisplay.htm +W: http://jair.lab.fi.uva.es/~migojed/auxdisplay.htm S: Maintained CFAG12864BFB LCD FRAMEBUFFER DRIVER P: Miguel Ojeda Sandonis -M: maxextreme@gmail.com +M: miguel.ojeda.sandonis@gmail.com L: linux-kernel@vger.kernel.org -W: http://auxdisplay.googlepages.com/ +W: http://miguelojeda.es/auxdisplay.htm +W: http://jair.lab.fi.uva.es/~migojed/auxdisplay.htm S: Maintained CFG80211 and NL80211 @@ -2428,9 +2431,10 @@ S: Maintained KS0108 LCD CONTROLLER DRIVER P: Miguel Ojeda Sandonis -M: maxextreme@gmail.com +M: miguel.ojeda.sandonis@gmail.com L: linux-kernel@vger.kernel.org -W: http://auxdisplay.googlepages.com/ +W: http://miguelojeda.es/auxdisplay.htm +W: http://jair.lab.fi.uva.es/~migojed/auxdisplay.htm S: Maintained LAPB module diff --git a/drivers/auxdisplay/Kconfig b/drivers/auxdisplay/Kconfig index 043353bd060..14b9d5f4c20 100644 --- a/drivers/auxdisplay/Kconfig +++ b/drivers/auxdisplay/Kconfig @@ -64,7 +64,7 @@ config KS0108_DELAY Amount of time the ks0108 should wait between each control write to the parallel port. - If your driver seems to miss random writings, increment this. + If your LCD seems to miss random writings, increment this. If you don't know what I'm talking about, ignore it. diff --git a/drivers/auxdisplay/cfag12864b.c b/drivers/auxdisplay/cfag12864b.c index 80bb0610538..683509f013a 100644 --- a/drivers/auxdisplay/cfag12864b.c +++ b/drivers/auxdisplay/cfag12864b.c @@ -5,7 +5,7 @@ * License: GPLv2 * Depends: ks0108 * - * Author: Copyright (C) Miguel Ojeda Sandonis + * Author: Copyright (C) Miguel Ojeda Sandonis * Date: 2006-10-31 * * This program is free software; you can redistribute it and/or modify @@ -398,5 +398,5 @@ module_init(cfag12864b_init); module_exit(cfag12864b_exit); MODULE_LICENSE("GPL v2"); -MODULE_AUTHOR("Miguel Ojeda Sandonis "); +MODULE_AUTHOR("Miguel Ojeda Sandonis "); MODULE_DESCRIPTION("cfag12864b LCD driver"); diff --git a/drivers/auxdisplay/cfag12864bfb.c b/drivers/auxdisplay/cfag12864bfb.c index 307c190699e..fe3a865be4e 100644 --- a/drivers/auxdisplay/cfag12864bfb.c +++ b/drivers/auxdisplay/cfag12864bfb.c @@ -5,7 +5,7 @@ * License: GPLv2 * Depends: cfag12864b * - * Author: Copyright (C) Miguel Ojeda Sandonis + * Author: Copyright (C) Miguel Ojeda Sandonis * Date: 2006-10-31 * * This program is free software; you can redistribute it and/or modify @@ -186,5 +186,5 @@ module_init(cfag12864bfb_init); module_exit(cfag12864bfb_exit); MODULE_LICENSE("GPL v2"); -MODULE_AUTHOR("Miguel Ojeda Sandonis "); +MODULE_AUTHOR("Miguel Ojeda Sandonis "); MODULE_DESCRIPTION("cfag12864b LCD framebuffer driver"); diff --git a/drivers/auxdisplay/ks0108.c b/drivers/auxdisplay/ks0108.c index e6c3646ef18..5b93852392b 100644 --- a/drivers/auxdisplay/ks0108.c +++ b/drivers/auxdisplay/ks0108.c @@ -5,7 +5,7 @@ * License: GPLv2 * Depends: parport * - * Author: Copyright (C) Miguel Ojeda Sandonis + * Author: Copyright (C) Miguel Ojeda Sandonis * Date: 2006-10-31 * * This program is free software; you can redistribute it and/or modify @@ -173,6 +173,6 @@ module_init(ks0108_init); module_exit(ks0108_exit); MODULE_LICENSE("GPL v2"); -MODULE_AUTHOR("Miguel Ojeda Sandonis "); +MODULE_AUTHOR("Miguel Ojeda Sandonis "); MODULE_DESCRIPTION("ks0108 LCD Controller driver"); diff --git a/include/linux/cfag12864b.h b/include/linux/cfag12864b.h index 1605dd8aa64..6f9f19d6659 100644 --- a/include/linux/cfag12864b.h +++ b/include/linux/cfag12864b.h @@ -4,7 +4,7 @@ * Description: cfag12864b LCD driver header * License: GPLv2 * - * Author: Copyright (C) Miguel Ojeda Sandonis + * Author: Copyright (C) Miguel Ojeda Sandonis * Date: 2006-10-12 * * This program is free software; you can redistribute it and/or modify diff --git a/include/linux/ks0108.h b/include/linux/ks0108.h index a2c54acceb4..cb311798e0b 100644 --- a/include/linux/ks0108.h +++ b/include/linux/ks0108.h @@ -4,7 +4,7 @@ * Description: ks0108 LCD Controller driver header * License: GPLv2 * - * Author: Copyright (C) Miguel Ojeda Sandonis + * Author: Copyright (C) Miguel Ojeda Sandonis * Date: 2006-10-31 * * This program is free software; you can redistribute it and/or modify -- cgit v1.2.3-70-g09d2 From f93f18cd94626108021c4e681f48d2d99bca5b90 Mon Sep 17 00:00:00 2001 From: Hiroshi Shimamoto Date: Fri, 4 Jul 2008 09:59:39 -0700 Subject: Update taskstats-struct document for scaled time accounting Update Documentation/accounting/taskstats-struct.txt for TASKSTATS_VERSION 6, adding scaled time accounting. Signed-off-by: Hiroshi Shimamoto Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/accounting/taskstats-struct.txt | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'Documentation') diff --git a/Documentation/accounting/taskstats-struct.txt b/Documentation/accounting/taskstats-struct.txt index 8aa7529f825..cd784f46bf8 100644 --- a/Documentation/accounting/taskstats-struct.txt +++ b/Documentation/accounting/taskstats-struct.txt @@ -24,6 +24,8 @@ There are three different groups of fields in the struct taskstats: 4) Per-task and per-thread context switch count statistics +5) Time accounting for SMT machines + Future extension should add fields to the end of the taskstats struct, and should not change the relative position of each field within the struct. @@ -164,4 +166,8 @@ struct taskstats { __u64 nvcsw; /* Context voluntary switch counter */ __u64 nivcsw; /* Context involuntary switch counter */ +5) Time accounting for SMT machines + __u64 ac_utimescaled; /* utime scaled on frequency etc */ + __u64 ac_stimescaled; /* stime scaled on frequency etc */ + __u64 cpu_scaled_run_real_total; /* scaled cpu_run_real_total */ } -- cgit v1.2.3-70-g09d2 From 71f77055deeab9708c00717352bec05aa125c713 Mon Sep 17 00:00:00 2001 From: Pavel Machek Date: Fri, 4 Jul 2008 09:59:43 -0700 Subject: Doc*/kernel-parameters.txt: fix stale references Fix stale references to source files in kernel-parameters.txt. Signed-off-by: Pavel Machek Acked-by: Randy Dunlap Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/kernel-parameters.txt | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'Documentation') diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index e07c432c731..85c6f574e26 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -295,7 +295,7 @@ and is between 256 and 4096 characters. It is defined in the file when initialising the APIC and IO-APIC components. apm= [APM] Advanced Power Management - See header of arch/i386/kernel/apm.c. + See header of arch/x86/kernel/apm_32.c. arcrimi= [HW,NET] ARCnet - "RIM I" (entirely mem-mapped) cards Format: ,, @@ -638,7 +638,7 @@ and is between 256 and 4096 characters. It is defined in the file elanfreq= [X86-32] See comment before function elanfreq_setup() in - arch/i386/kernel/cpu/cpufreq/elanfreq.c. + arch/x86/kernel/cpu/cpufreq/elanfreq.c. elevator= [IOSCHED] Format: {"anticipatory" | "cfq" | "deadline" | "noop"} -- cgit v1.2.3-70-g09d2 From bef67c5a7d3a9c45e091e36625c09c0c811e2672 Mon Sep 17 00:00:00 2001 From: Li Zefan Date: Fri, 4 Jul 2008 09:59:55 -0700 Subject: cgroups: document the effect of attaching PID 0 to a cgroup Document that a pid of zero(0) can be used to refer to the current task when attaching a task to a cgroup, as in the following usage: # echo 0 > /dev/cgroup/tasks This is consistent with existing cpuset behavior. Signed-off-by: Li Zefan Acked-by: Paul Jackson Acked-by: Dhaval Giani Cc: Paul Menage Cc: Balbir Singh Cc: Andrea Righi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/cgroups.txt | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'Documentation') diff --git a/Documentation/cgroups.txt b/Documentation/cgroups.txt index 824fc027447..d9014aa0eb6 100644 --- a/Documentation/cgroups.txt +++ b/Documentation/cgroups.txt @@ -390,6 +390,10 @@ If you have several tasks to attach, you have to do it one after another: ... # /bin/echo PIDn > tasks +You can attach the current shell task by echoing 0: + +# echo 0 > tasks + 3. Kernel API ============= -- cgit v1.2.3-70-g09d2 From 985ee7f224cca8a0d622b24ec399f364c63fc274 Mon Sep 17 00:00:00 2001 From: Paul Jackson Date: Fri, 4 Jul 2008 10:00:01 -0700 Subject: cpusets: document proc status cpus and mems allowed lists Provide a little documentation for the two new fields, Cpus_allowed_list and Mems_allowed_list, that were added to each /proc//status file a while back. Signed-off-by: Paul Jackson Acked-by: Michael Kerrisk Cc: Randy Dunlap Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/cpusets.txt | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'Documentation') diff --git a/Documentation/cpusets.txt b/Documentation/cpusets.txt index 353504de308..894b844153e 100644 --- a/Documentation/cpusets.txt +++ b/Documentation/cpusets.txt @@ -154,13 +154,15 @@ browsing and modifying the cpusets presently known to the kernel. No new system calls are added for cpusets - all support for querying and modifying cpusets is via this cpuset file system. -The /proc//status file for each task has two added lines, +The /proc//status file for each task has four added lines, displaying the tasks cpus_allowed (on which CPUs it may be scheduled) and mems_allowed (on which Memory Nodes it may obtain memory), -in the format seen in the following example: +in the two formats seen in the following example: Cpus_allowed: ffffffff,ffffffff,ffffffff,ffffffff + Cpus_allowed_list: 0-127 Mems_allowed: ffffffff,ffffffff + Mems_allowed_list: 0-63 Each cpuset is represented by a directory in the cgroup file system containing (on top of the standard cgroup files) the following -- cgit v1.2.3-70-g09d2 From d823f6bfec2844493c05961133895de21fa0e02d Mon Sep 17 00:00:00 2001 From: Li Zefan Date: Fri, 4 Jul 2008 10:00:07 -0700 Subject: devcgroup: fix odd behaviour when writing 'a' to devices.allow # cat /devcg/devices.list a *:* rwm # echo a > devices.allow # cat /devcg/devices.list a *:* rwm a 0:0 rwm This is odd and maybe confusing. With this patch, writing 'a' to devices.allow will add 'a *:* rwm' to the whitelist. Also a few fixes and updates to the document. Signed-off-by: Li Zefan Cc: Pavel Emelyanov Cc: Serge E. Hallyn Cc: Paul Menage Cc: Balbir Singh Cc: James Morris Cc: Chris Wright Cc: Stephen Smalley Cc: KAMEZAWA Hiroyuki Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/controllers/devices.txt | 8 ++++++-- security/device_cgroup.c | 2 ++ 2 files changed, 8 insertions(+), 2 deletions(-) (limited to 'Documentation') diff --git a/Documentation/controllers/devices.txt b/Documentation/controllers/devices.txt index 4dcea42432c..7cc6e6a6067 100644 --- a/Documentation/controllers/devices.txt +++ b/Documentation/controllers/devices.txt @@ -13,7 +13,7 @@ either an integer or * for all. Access is a composition of r The root device cgroup starts with rwm to 'all'. A child device cgroup gets a copy of the parent. Administrators can then remove devices from the whitelist or add new entries. A child cgroup can -never receive a device access which is denied its parent. However +never receive a device access which is denied by its parent. However when a device access is removed from a parent it will not also be removed from the child(ren). @@ -29,7 +29,11 @@ allows cgroup 1 to read and mknod the device usually known as echo a > /cgroups/1/devices.deny -will remove the default 'a *:* mrw' entry. +will remove the default 'a *:* rwm' entry. Doing + + echo a > /cgroups/1/devices.allow + +will add the 'a *:* rwm' entry to the whitelist. 3. Security diff --git a/security/device_cgroup.c b/security/device_cgroup.c index baf348834b6..fd764a0858d 100644 --- a/security/device_cgroup.c +++ b/security/device_cgroup.c @@ -382,6 +382,8 @@ static ssize_t devcgroup_access_write(struct cgroup *cgroup, struct cftype *cft, case 'a': wh.type = DEV_ALL; wh.access = ACC_MASK; + wh.major = ~0; + wh.minor = ~0; goto handle; case 'b': wh.type = DEV_BLOCK; -- cgit v1.2.3-70-g09d2 From 46b6d94eb04a718730c73b83db889341aad0515e Mon Sep 17 00:00:00 2001 From: Paul Jackson Date: Fri, 4 Jul 2008 10:00:09 -0700 Subject: doc: document the relax_domain_level kernel boot argument Document the kernel boot parameter: relax_domain_level=. Signed-off-by: Paul Jackson Cc: Michael Kerrisk Reviewed-by: Li Zefan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/cpusets.txt | 3 +++ Documentation/kernel-parameters.txt | 4 ++++ 2 files changed, 7 insertions(+) (limited to 'Documentation') diff --git a/Documentation/cpusets.txt b/Documentation/cpusets.txt index 894b844153e..1f5a924d1e5 100644 --- a/Documentation/cpusets.txt +++ b/Documentation/cpusets.txt @@ -546,6 +546,9 @@ otherwise initial value -1 that indicates the cpuset has no request. ( 4 : search nodes in a chunk of node [on NUMA system] ) ( 5 : search system wide [on NUMA system] ) +The system default is architecture dependent. The system default +can be changed using the relax_domain_level= boot parameter. + This file is per-cpuset and affect the sched domain where the cpuset belongs to. Therefore if the flag 'sched_load_balance' of a cpuset is disabled, then 'sched_relax_domain_level' have no effect since diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 85c6f574e26..b52f47d588b 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -1679,6 +1679,10 @@ and is between 256 and 4096 characters. It is defined in the file Format: [,[,...]] See arch/*/kernel/reboot.c or arch/*/kernel/process.c + relax_domain_level= + [KNL, SMP] Set scheduler's default relax_domain_level. + See Documentation/cpusets.txt. + reserve= [KNL,BUGS] Force the kernel to ignore some iomem area reservetop= [X86-32] -- cgit v1.2.3-70-g09d2