diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-firmware-acpi | 16 | ||||
| -rw-r--r-- | Documentation/acpi/debug.txt | 148 | ||||
| -rw-r--r-- | Documentation/cciss.txt | 3 | ||||
| -rw-r--r-- | Documentation/email-clients.txt | 25 | ||||
| -rw-r--r-- | Documentation/filesystems/vfat.txt | 32 | ||||
| -rw-r--r-- | Documentation/kernel-parameters.txt | 97 |
6 files changed, 254 insertions, 67 deletions
diff --git a/Documentation/ABI/testing/sysfs-firmware-acpi b/Documentation/ABI/testing/sysfs-firmware-acpi index f27be7d1a49f..e8ffc70ffe12 100644 --- a/Documentation/ABI/testing/sysfs-firmware-acpi +++ b/Documentation/ABI/testing/sysfs-firmware-acpi @@ -89,7 +89,7 @@ Description: error - an interrupt that can't be accounted for above. - invalid: it's either a wakeup GPE or a GPE/Fixed Event that + invalid: it's either a GPE or a Fixed Event that doesn't have an event handler. disable: the GPE/Fixed Event is valid but disabled. @@ -117,30 +117,30 @@ Description: and other user space applications so that the machine won't shutdown when pressing the power button. # cat ff_pwr_btn - 0 + 0 enabled # press the power button for 3 times; # cat ff_pwr_btn - 3 + 3 enabled # echo disable > ff_pwr_btn # cat ff_pwr_btn - disable + 3 disabled # press the power button for 3 times; # cat ff_pwr_btn - disable + 3 disabled # echo enable > ff_pwr_btn # cat ff_pwr_btn - 4 + 4 enabled /* * this is because the status bit is set even if the enable bit is cleared, * and it triggers an ACPI fixed event when the enable bit is set again */ # press the power button for 3 times; # cat ff_pwr_btn - 7 + 7 enabled # echo disable > ff_pwr_btn # press the power button for 3 times; # echo clear > ff_pwr_btn /* clear the status bit */ # echo disable > ff_pwr_btn # cat ff_pwr_btn - 7 + 7 enabled diff --git a/Documentation/acpi/debug.txt b/Documentation/acpi/debug.txt new file mode 100644 index 000000000000..65bf47c46b6d --- /dev/null +++ b/Documentation/acpi/debug.txt @@ -0,0 +1,148 @@ + ACPI Debug Output + + +The ACPI CA, the Linux ACPI core, and some ACPI drivers can generate debug +output. This document describes how to use this facility. + +Compile-time configuration +-------------------------- + +ACPI debug output is globally enabled by CONFIG_ACPI_DEBUG. If this config +option is turned off, the debug messages are not even built into the +kernel. + +Boot- and run-time configuration +-------------------------------- + +When CONFIG_ACPI_DEBUG=y, you can select the component and level of messages +you're interested in. At boot-time, use the acpi.debug_layer and +acpi.debug_level kernel command line options. After boot, you can use the +debug_layer and debug_level files in /sys/module/acpi/parameters/ to control +the debug messages. + +debug_layer (component) +----------------------- + +The "debug_layer" is a mask that selects components of interest, e.g., a +specific driver or part of the ACPI interpreter. To build the debug_layer +bitmask, look for the "#define _COMPONENT" in an ACPI source file. + +You can set the debug_layer mask at boot-time using the acpi.debug_layer +command line argument, and you can change it after boot by writing values +to /sys/module/acpi/parameters/debug_layer. + +The possible components are defined in include/acpi/acoutput.h and +include/acpi/acpi_drivers.h. Reading /sys/module/acpi/parameters/debug_layer +shows the supported mask values, currently these: + + ACPI_UTILITIES 0x00000001 + ACPI_HARDWARE 0x00000002 + ACPI_EVENTS 0x00000004 + ACPI_TABLES 0x00000008 + ACPI_NAMESPACE 0x00000010 + ACPI_PARSER 0x00000020 + ACPI_DISPATCHER 0x00000040 + ACPI_EXECUTER 0x00000080 + ACPI_RESOURCES 0x00000100 + ACPI_CA_DEBUGGER 0x00000200 + ACPI_OS_SERVICES 0x00000400 + ACPI_CA_DISASSEMBLER 0x00000800 + ACPI_COMPILER 0x00001000 + ACPI_TOOLS 0x00002000 + ACPI_BUS_COMPONENT 0x00010000 + ACPI_AC_COMPONENT 0x00020000 + ACPI_BATTERY_COMPONENT 0x00040000 + ACPI_BUTTON_COMPONENT 0x00080000 + ACPI_SBS_COMPONENT 0x00100000 + ACPI_FAN_COMPONENT 0x00200000 + ACPI_PCI_COMPONENT 0x00400000 + ACPI_POWER_COMPONENT 0x00800000 + ACPI_CONTAINER_COMPONENT 0x01000000 + ACPI_SYSTEM_COMPONENT 0x02000000 + ACPI_THERMAL_COMPONENT 0x04000000 + ACPI_MEMORY_DEVICE_COMPONENT 0x08000000 + ACPI_VIDEO_COMPONENT 0x10000000 + ACPI_PROCESSOR_COMPONENT 0x20000000 + +debug_level +----------- + +The "debug_level" is a mask that selects different types of messages, e.g., +those related to initialization, method execution, informational messages, etc. +To build debug_level, look at the level specified in an ACPI_DEBUG_PRINT() +statement. + +The ACPI interpreter uses several different levels, but the Linux +ACPI core and ACPI drivers generally only use ACPI_LV_INFO. + +You can set the debug_level mask at boot-time using the acpi.debug_level +command line argument, and you can change it after boot by writing values +to /sys/module/acpi/parameters/debug_level. + +The possible levels are defined in include/acpi/acoutput.h. Reading +/sys/module/acpi/parameters/debug_level shows the supported mask values, +currently these: + + ACPI_LV_INIT 0x00000001 + ACPI_LV_DEBUG_OBJECT 0x00000002 + ACPI_LV_INFO 0x00000004 + ACPI_LV_INIT_NAMES 0x00000020 + ACPI_LV_PARSE 0x00000040 + ACPI_LV_LOAD 0x00000080 + ACPI_LV_DISPATCH 0x00000100 + ACPI_LV_EXEC 0x00000200 + ACPI_LV_NAMES 0x00000400 + ACPI_LV_OPREGION 0x00000800 + ACPI_LV_BFIELD 0x00001000 + ACPI_LV_TABLES 0x00002000 + ACPI_LV_VALUES 0x00004000 + ACPI_LV_OBJECTS 0x00008000 + ACPI_LV_RESOURCES 0x00010000 + ACPI_LV_USER_REQUESTS 0x00020000 + ACPI_LV_PACKAGE 0x00040000 + ACPI_LV_ALLOCATIONS 0x00100000 + ACPI_LV_FUNCTIONS 0x00200000 + ACPI_LV_OPTIMIZATIONS 0x00400000 + ACPI_LV_MUTEX 0x01000000 + ACPI_LV_THREADS 0x02000000 + ACPI_LV_IO 0x04000000 + ACPI_LV_INTERRUPTS 0x08000000 + ACPI_LV_AML_DISASSEMBLE 0x10000000 + ACPI_LV_VERBOSE_INFO 0x20000000 + ACPI_LV_FULL_TABLES 0x40000000 + ACPI_LV_EVENTS 0x80000000 + +Examples +-------- + +For example, drivers/acpi/bus.c contains this: + + #define _COMPONENT ACPI_BUS_COMPONENT + ... + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device insertion detected\n")); + +To turn on this message, set the ACPI_BUS_COMPONENT bit in acpi.debug_layer +and the ACPI_LV_INFO bit in acpi.debug_level. (The ACPI_DEBUG_PRINT +statement uses ACPI_DB_INFO, which is macro based on the ACPI_LV_INFO +definition.) + +Enable all AML "Debug" output (stores to the Debug object while interpreting +AML) during boot: + + acpi.debug_layer=0xffffffff acpi.debug_level=0x2 + +Enable PCI and PCI interrupt routing debug messages: + + acpi.debug_layer=0x400000 acpi.debug_level=0x4 + +Enable all ACPI hardware-related messages: + + acpi.debug_layer=0x2 acpi.debug_level=0xffffffff + +Enable all ACPI_DB_INFO messages after boot: + + # echo 0x4 > /sys/module/acpi/parameters/debug_level + +Show all valid component values: + + # cat /sys/module/acpi/parameters/debug_layer diff --git a/Documentation/cciss.txt b/Documentation/cciss.txt index 8244c6442faa..89698e8df7d4 100644 --- a/Documentation/cciss.txt +++ b/Documentation/cciss.txt @@ -21,11 +21,14 @@ This driver is known to work with the following cards: * SA E200 * SA E200i * SA E500 + * SA P700m * SA P212 * SA P410 * SA P410i * SA P411 * SA P812 + * SA P712m + * SA P711m Detecting drive failures: ------------------------- diff --git a/Documentation/email-clients.txt b/Documentation/email-clients.txt index 2ebb94d6ed8e..a618efab7b15 100644 --- a/Documentation/email-clients.txt +++ b/Documentation/email-clients.txt @@ -213,4 +213,29 @@ TkRat (GUI) Works. Use "Insert file..." or external editor. +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +Gmail (Web GUI) + +If you just have to use Gmail to send patches, it CAN be made to work. It +requires a bit of external help, though. + +The first problem is that Gmail converts tabs to spaces. This will +totally break your patches. To prevent this, you have to use a different +editor. There is a firefox extension called "ViewSourceWith" +(https://addons.mozilla.org/en-US/firefox/addon/394) which allows you to +edit any text box in the editor of your choice. Configure it to launch +your favorite editor. When you want to send a patch, use this technique. +Once you have crafted your messsage + patch, save and exit the editor, +which should reload the Gmail edit box. GMAIL WILL PRESERVE THE TABS. +Hoorah. Apparently you can cut-n-paste literal tabs, but Gmail will +convert those to spaces upon sending! + +The second problem is that Gmail converts tabs to spaces on replies. If +you reply to a patch, don't expect to be able to apply it as a patch. + +The last problem is that Gmail will base64-encode any message that has a +non-ASCII character. That includes things like European names. Be aware. + +Gmail is not convenient for lkml patches, but CAN be made to work. + ### diff --git a/Documentation/filesystems/vfat.txt b/Documentation/filesystems/vfat.txt index bbac4f1d9056..3a5ddc96901a 100644 --- a/Documentation/filesystems/vfat.txt +++ b/Documentation/filesystems/vfat.txt @@ -8,6 +8,12 @@ if you want to format from within Linux. VFAT MOUNT OPTIONS ---------------------------------------------------------------------- +uid=### -- Set the owner of all files on this filesystem. + The default is the uid of current process. + +gid=### -- Set the group of all files on this filesystem. + The default is the gid of current process. + umask=### -- The permission mask (for files and directories, see umask(1)). The default is the umask of current process. @@ -36,7 +42,7 @@ codepage=### -- Sets the codepage number for converting to shortname characters on FAT filesystem. By default, FAT_DEFAULT_CODEPAGE setting is used. -iocharset=name -- Character set to use for converting between the +iocharset=<name> -- Character set to use for converting between the encoding is used for user visible filename and 16 bit Unicode characters. Long filenames are stored on disk in Unicode format, but Unix for the most part doesn't @@ -86,6 +92,8 @@ check=s|r|n -- Case sensitivity checking setting. r: relaxed, case insensitive n: normal, default setting, currently case insensitive +nocase -- This was deprecated for vfat. Use shortname=win95 instead. + shortname=lower|win95|winnt|mixed -- Shortname display/create setting. lower: convert to lowercase for display, @@ -99,11 +107,31 @@ shortname=lower|win95|winnt|mixed tz=UTC -- Interpret timestamps as UTC rather than local time. This option disables the conversion of timestamps between local time (as used by Windows on FAT) and UTC - (which Linux uses internally). This is particuluarly + (which Linux uses internally). This is particularly useful when mounting devices (like digital cameras) that are set to UTC in order to avoid the pitfalls of local time. +showexec -- If set, the execute permission bits of the file will be + allowed only if the extension part of the name is .EXE, + .COM, or .BAT. Not set by default. + +debug -- Can be set, but unused by the current implementation. + +sys_immutable -- If set, ATTR_SYS attribute on FAT is handled as + IMMUTABLE flag on Linux. Not set by default. + +flush -- If set, the filesystem will try to flush to disk more + early than normal. Not set by default. + +rodir -- FAT has the ATTR_RO (read-only) attribute. But on Windows, + the ATTR_RO of the directory will be just ignored actually, + and is used by only applications as flag. E.g. it's setted + for the customized folder. + + If you want to use ATTR_RO as read-only flag even for + the directory, set this option. + <bool>: 0,1,yes,no,true,false TODO diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 1bbcaa8982b6..c600c4ffc657 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -198,59 +198,42 @@ and is between 256 and 4096 characters. It is defined in the file that require a timer override, but don't have HPET - acpi.debug_layer= [HW,ACPI] + acpi_backlight= [HW,ACPI] + acpi_backlight=vendor + acpi_backlight=video + If set to vendor, prefer vendor specific driver + (e.g. thinkpad_acpi, sony_acpi, etc.) instead + of the ACPI video.ko driver. + + acpi_display_output= [HW,ACPI] + acpi_display_output=vendor + acpi_display_output=video + See above. + + acpi.debug_layer= [HW,ACPI,ACPI_DEBUG] + acpi.debug_level= [HW,ACPI,ACPI_DEBUG] Format: <int> - Each bit of the <int> indicates an ACPI debug layer, - 1: enable, 0: disable. It is useful for boot time - debugging. After system has booted up, it can be set - via /sys/module/acpi/parameters/debug_layer. - CONFIG_ACPI_DEBUG must be enabled for this to produce any output. - Available bits (add the numbers together) to enable debug output - for specific parts of the ACPI subsystem: - 0x01 utilities 0x02 hardware 0x04 events 0x08 tables - 0x10 namespace 0x20 parser 0x40 dispatcher - 0x80 executer 0x100 resources 0x200 acpica debugger - 0x400 os services 0x800 acpica disassembler. - The number can be in decimal or prefixed with 0x in hex. - Warning: Many of these options can produce a lot of - output and make your system unusable. Be very careful. - - acpi.debug_level= [HW,ACPI] - Format: <int> - Each bit of the <int> indicates an ACPI debug level, - which corresponds to the level in an ACPI_DEBUG_PRINT - statement. After system has booted up, this mask - can be set via /sys/module/acpi/parameters/debug_level. - - CONFIG_ACPI_DEBUG must be enabled for this to produce - any output. The number can be in decimal or prefixed - with 0x in hex. Some of these options produce so much - output that the system is unusable. - - The following global components are defined by the - ACPI CA: - 0x01 error - 0x02 warn - 0x04 init - 0x08 debug object - 0x10 info - 0x20 init names - 0x40 parse - 0x80 load - 0x100 dispatch - 0x200 execute - 0x400 names - 0x800 operation region - 0x1000 bfield - 0x2000 tables - 0x4000 values - 0x8000 objects - 0x10000 resources - 0x20000 user requests - 0x40000 package - The number can be in decimal or prefixed with 0x in hex. - Warning: Many of these options can produce a lot of - output and make your system unusable. Be very careful. + CONFIG_ACPI_DEBUG must be enabled to produce any ACPI + debug output. Bits in debug_layer correspond to a + _COMPONENT in an ACPI source file, e.g., + #define _COMPONENT ACPI_PCI_COMPONENT + Bits in debug_level correspond to a level in + ACPI_DEBUG_PRINT statements, e.g., + ACPI_DEBUG_PRINT((ACPI_DB_INFO, ... + See Documentation/acpi/debug.txt for more information + about debug layers and levels. + + Enable AML "Debug" output, i.e., stores to the Debug + object while interpreting AML: + acpi.debug_layer=0xffffffff acpi.debug_level=0x2 + Enable PCI/PCI interrupt routing info messages: + acpi.debug_layer=0x400000 acpi.debug_level=0x4 + Enable all messages related to ACPI hardware: + acpi.debug_layer=0x2 acpi.debug_level=0xffffffff + + Some values produce so much output that the system is + unusable. The "log_buf_len" parameter may be useful + if you need to capture more output. acpi.power_nocheck= [HW,ACPI] Format: 1/0 enable/disable the check of power state. @@ -995,13 +978,15 @@ and is between 256 and 4096 characters. It is defined in the file Format: <cpu number>,...,<cpu number> or - <cpu number>-<cpu number> (must be a positive range in ascending order) + <cpu number>-<cpu number> + (must be a positive range in ascending order) or a mixture <cpu number>,...,<cpu number>-<cpu number> + This option can be used to specify one or more CPUs to isolate from the general SMP balancing and scheduling - algorithms. The only way to move a process onto or off - an "isolated" CPU is via the CPU affinity syscalls. + algorithms. You can move a process onto or off an + "isolated" CPU via the CPU affinity syscalls or cpuset. <cpu number> begins at 0 and the maximum value is "number of CPUs in system - 1". @@ -1470,8 +1455,6 @@ and is between 256 and 4096 characters. It is defined in the file Valid arguments: on, off Default: on - noirqbalance [X86-32,SMP,KNL] Disable kernel irq balancing - noirqdebug [X86-32] Disables the code which attempts to detect and disable unhandled interrupt sources. |