diff options
109 files changed, 3568 insertions, 1005 deletions
diff --git a/Documentation/ABI/removed/devfs b/Documentation/ABI/removed/devfs index 8ffd28bf6598..0020c49933c4 100644 --- a/Documentation/ABI/removed/devfs +++ b/Documentation/ABI/removed/devfs @@ -1,6 +1,6 @@ What: devfs Date: July 2005 (scheduled), finally removed in kernel v2.6.18 -Contact: Greg Kroah-Hartman <gregkh@suse.de> +Contact: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Description: devfs has been unmaintained for a number of years, has unfixable races, contains a naming policy within the kernel that is diff --git a/Documentation/ABI/stable/sysfs-driver-usb-usbtmc b/Documentation/ABI/stable/sysfs-driver-usb-usbtmc index 9a75fb22187d..23a43b8207e6 100644 --- a/Documentation/ABI/stable/sysfs-driver-usb-usbtmc +++ b/Documentation/ABI/stable/sysfs-driver-usb-usbtmc @@ -1,7 +1,7 @@ What: /sys/bus/usb/drivers/usbtmc/devices/*/interface_capabilities What: /sys/bus/usb/drivers/usbtmc/devices/*/device_capabilities Date: August 2008 -Contact: Greg Kroah-Hartman <gregkh@suse.de> +Contact: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Description: These files show the various USB TMC capabilities as described by the device itself. The full description of the bitfields @@ -15,7 +15,7 @@ Description: What: /sys/bus/usb/drivers/usbtmc/devices/*/usb488_interface_capabilities What: /sys/bus/usb/drivers/usbtmc/devices/*/usb488_device_capabilities Date: August 2008 -Contact: Greg Kroah-Hartman <gregkh@suse.de> +Contact: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Description: These files show the various USB TMC capabilities as described by the device itself. The full description of the bitfields @@ -29,7 +29,7 @@ Description: What: /sys/bus/usb/drivers/usbtmc/devices/*/TermChar Date: August 2008 -Contact: Greg Kroah-Hartman <gregkh@suse.de> +Contact: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Description: This file is the TermChar value to be sent to the USB TMC device as described by the document, "Universal Serial Bus Test @@ -42,7 +42,7 @@ Description: What: /sys/bus/usb/drivers/usbtmc/devices/*/TermCharEnabled Date: August 2008 -Contact: Greg Kroah-Hartman <gregkh@suse.de> +Contact: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Description: This file determines if the TermChar is to be sent to the device on every transaction or not. For more details about @@ -53,7 +53,7 @@ Description: What: /sys/bus/usb/drivers/usbtmc/devices/*/auto_abort Date: August 2008 -Contact: Greg Kroah-Hartman <gregkh@suse.de> +Contact: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Description: This file determines if the the transaction of the USB TMC device is to be automatically aborted if there is any error. diff --git a/Documentation/ABI/testing/sysfs-class b/Documentation/ABI/testing/sysfs-class index 4b0cb891e46e..676530fcf747 100644 --- a/Documentation/ABI/testing/sysfs-class +++ b/Documentation/ABI/testing/sysfs-class @@ -1,6 +1,6 @@ What: /sys/class/ Date: Febuary 2006 -Contact: Greg Kroah-Hartman <gregkh@suse.de> +Contact: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Description: The /sys/class directory will consist of a group of subdirectories describing individual classes of devices diff --git a/Documentation/ABI/testing/sysfs-devices b/Documentation/ABI/testing/sysfs-devices index 6a25671ee5f6..5fcc94358b8d 100644 --- a/Documentation/ABI/testing/sysfs-devices +++ b/Documentation/ABI/testing/sysfs-devices @@ -1,6 +1,6 @@ What: /sys/devices Date: February 2006 -Contact: Greg Kroah-Hartman <gregkh@suse.de> +Contact: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Description: The /sys/devices tree contains a snapshot of the internal state of the kernel device tree. Devices will diff --git a/Documentation/ABI/testing/sysfs-devices-soc b/Documentation/ABI/testing/sysfs-devices-soc new file mode 100644 index 000000000000..6d9cc253f2b2 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-devices-soc @@ -0,0 +1,58 @@ +What: /sys/devices/socX +Date: January 2012 +contact: Lee Jones <lee.jones@linaro.org> +Description: + The /sys/devices/ directory contains a sub-directory for each + System-on-Chip (SoC) device on a running platform. Information + regarding each SoC can be obtained by reading sysfs files. This + functionality is only available if implemented by the platform. + + The directory created for each SoC will also house information + about devices which are commonly contained in /sys/devices/platform. + It has been agreed that if an SoC device exists, its supported + devices would be better suited to appear as children of that SoC. + +What: /sys/devices/socX/machine +Date: January 2012 +contact: Lee Jones <lee.jones@linaro.org> +Description: + Read-only attribute common to all SoCs. Contains the SoC machine + name (e.g. Ux500). + +What: /sys/devices/socX/family +Date: January 2012 +contact: Lee Jones <lee.jones@linaro.org> +Description: + Read-only attribute common to all SoCs. Contains SoC family name + (e.g. DB8500). + +What: /sys/devices/socX/soc_id +Date: January 2012 +contact: Lee Jones <lee.jones@linaro.org> +Description: + Read-only attribute supported by most SoCs. In the case of + ST-Ericsson's chips this contains the SoC serial number. + +What: /sys/devices/socX/revision +Date: January 2012 +contact: Lee Jones <lee.jones@linaro.org> +Description: + Read-only attribute supported by most SoCs. Contains the SoC's + manufacturing revision number. + +What: /sys/devices/socX/process +Date: January 2012 +contact: Lee Jones <lee.jones@linaro.org> +Description: + Read-only attribute supported ST-Ericsson's silicon. Contains the + the process by which the silicon chip was manufactured. + +What: /sys/bus/soc +Date: January 2012 +contact: Lee Jones <lee.jones@linaro.org> +Description: + The /sys/bus/soc/ directory contains the usual sub-folders + expected under most buses. /sys/bus/soc/devices is of particular + interest, as it contains a symlink for each SoC device found on + the system. Each symlink points back into the aforementioned + /sys/devices/socX devices. diff --git a/Documentation/ABI/testing/sysfs-driver-samsung-laptop b/Documentation/ABI/testing/sysfs-driver-samsung-laptop index 0a810231aad4..e82e7c2b8f80 100644 --- a/Documentation/ABI/testing/sysfs-driver-samsung-laptop +++ b/Documentation/ABI/testing/sysfs-driver-samsung-laptop @@ -1,7 +1,7 @@ What: /sys/devices/platform/samsung/performance_level Date: January 1, 2010 KernelVersion: 2.6.33 -Contact: Greg Kroah-Hartman <gregkh@suse.de> +Contact: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Description: Some Samsung laptops have different "performance levels" that are can be modified by a function key, and by this sysfs file. These values don't always make a whole lot diff --git a/Documentation/dynamic-debug-howto.txt b/Documentation/dynamic-debug-howto.txt index f959909d7154..74e6c7782678 100644 --- a/Documentation/dynamic-debug-howto.txt +++ b/Documentation/dynamic-debug-howto.txt @@ -12,7 +12,7 @@ dynamically enabled per-callsite. Dynamic debug has even more useful features: * Simple query language allows turning on and off debugging statements by - matching any combination of: + matching any combination of 0 or 1 of: - source filename - function name @@ -79,31 +79,24 @@ Command Language Reference ========================== At the lexical level, a command comprises a sequence of words separated -by whitespace characters. Note that newlines are treated as word -separators and do *not* end a command or allow multiple commands to -be done together. So these are all equivalent: +by spaces or tabs. So these are all equivalent: nullarbor:~ # echo -c 'file svcsock.c line 1603 +p' > <debugfs>/dynamic_debug/control nullarbor:~ # echo -c ' file svcsock.c line 1603 +p ' > <debugfs>/dynamic_debug/control -nullarbor:~ # echo -c 'file svcsock.c\nline 1603 +p' > - <debugfs>/dynamic_debug/control nullarbor:~ # echo -n 'file svcsock.c line 1603 +p' > <debugfs>/dynamic_debug/control -Commands are bounded by a write() system call. If you want to do -multiple commands you need to do a separate "echo" for each, like: +Command submissions are bounded by a write() system call. +Multiple commands can be written together, separated by ';' or '\n'. -nullarbor:~ # echo 'file svcsock.c line 1603 +p' > /proc/dprintk ;\ -> echo 'file svcsock.c line 1563 +p' > /proc/dprintk + ~# echo "func pnpacpi_get_resources +p; func pnp_assign_mem +p" \ + > <debugfs>/dynamic_debug/control -or even like: +If your query set is big, you can batch them too: -nullarbor:~ # ( -> echo 'file svcsock.c line 1603 +p' ;\ -> echo 'file svcsock.c line 1563 +p' ;\ -> ) > /proc/dprintk + ~# cat query-batch-file > <debugfs>/dynamic_debug/control At the syntactical level, a command comprises a sequence of match specifications, followed by a flags change specification. @@ -144,11 +137,12 @@ func func svc_tcp_accept file - The given string is compared against either the full - pathname or the basename of the source file of each - callsite. Examples: + The given string is compared against either the full pathname, the + src-root relative pathname, or the basename of the source file of + each callsite. Examples: file svcsock.c + file kernel/freezer.c file /usr/src/packages/BUILD/sgi-enhancednfs-1.4/default/net/sunrpc/svcsock.c module diff --git a/Documentation/filesystems/debugfs.txt b/Documentation/filesystems/debugfs.txt index 6872c91bce35..4e2575873187 100644 --- a/Documentation/filesystems/debugfs.txt +++ b/Documentation/filesystems/debugfs.txt @@ -14,7 +14,10 @@ Debugfs is typically mounted with a |