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Linus Torvalds
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May 29, 2011
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| @@ -1,2 +1,2 @@ | ||
| --- | ||
| refs/heads/master: d5b72ce15ea99a0b8f0d1973074c584daf92d70e | ||
| refs/heads/master: 2ff55e98d6e662a4887d2c688a4ab2ae510a97df |
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10
trunk/Documentation/ABI/obsolete/sysfs-driver-hid-roccat-koneplus
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| What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/koneplus/roccatkoneplus<minor>/startup_profile | ||
| Date: October 2010 | ||
| Contact: Stefan Achatz <erazor_de@users.sourceforge.net> | ||
| Description: The integer value of this attribute ranges from 0-4. | ||
| When read, this attribute returns the number of the actual | ||
| profile. This value is persistent, so its equivalent to the | ||
| profile that's active when the mouse is powered on next time. | ||
| When written, this file sets the number of the startup profile | ||
| and the mouse activates this profile immediately. | ||
| Please use actual_profile, it does the same thing. |
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| What: /sys/o2cb symlink | ||
| Date: May 2011 | ||
| KernelVersion: 2.6.40 | ||
| Contact: ocfs2-devel@oss.oracle.com | ||
| Description: This is a symlink: /sys/o2cb to /sys/fs/o2cb. The symlink is | ||
| removed when new versions of ocfs2-tools which know to look | ||
| in /sys/fs/o2cb are sufficiently prevalent. Don't code new | ||
| software to look here, it should try /sys/fs/o2cb instead. | ||
| Users: ocfs2-tools. It's sufficient to mail proposed changes to | ||
| ocfs2-devel@oss.oracle.com. |
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| What: /sys/firmware/efi/vars | ||
| Date: April 2004 | ||
| Contact: Matt Domsch <Matt_Domsch@dell.com> | ||
| Description: | ||
| This directory exposes interfaces for interactive with | ||
| EFI variables. For more information on EFI variables, | ||
| see 'Variable Services' in the UEFI specification | ||
| (section 7.2 in specification version 2.3 Errata D). | ||
|
|
||
| In summary, EFI variables are named, and are classified | ||
| into separate namespaces through the use of a vendor | ||
| GUID. They also have an arbitrary binary value | ||
| associated with them. | ||
|
|
||
| The efivars module enumerates these variables and | ||
| creates a separate directory for each one found. Each | ||
| directory has a name of the form "<key>-<vendor guid>" | ||
| and contains the following files: | ||
|
|
||
| attributes: A read-only text file enumerating the | ||
| EFI variable flags. Potential values | ||
| include: | ||
|
|
||
| EFI_VARIABLE_NON_VOLATILE | ||
| EFI_VARIABLE_BOOTSERVICE_ACCESS | ||
| EFI_VARIABLE_RUNTIME_ACCESS | ||
| EFI_VARIABLE_HARDWARE_ERROR_RECORD | ||
| EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | ||
|
|
||
| See the EFI documentation for an | ||
| explanation of each of these variables. | ||
|
|
||
| data: A read-only binary file that can be read | ||
| to attain the value of the EFI variable | ||
|
|
||
| guid: The vendor GUID of the variable. This | ||
| should always match the GUID in the | ||
| variable's name. | ||
|
|
||
| raw_var: A binary file that can be read to obtain | ||
| a structure that contains everything | ||
| there is to know about the variable. | ||
| For structure definition see "struct | ||
| efi_variable" in the kernel sources. | ||
|
|
||
| This file can also be written to in | ||
| order to update the value of a variable. | ||
| For this to work however, all fields of | ||
| the "struct efi_variable" passed must | ||
| match byte for byte with the structure | ||
| read out of the file, save for the value | ||
| portion. | ||
|
|
||
| **Note** the efi_variable structure | ||
| read/written with this file contains a | ||
| 'long' type that may change widths | ||
| depending on your underlying | ||
| architecture. | ||
|
|
||
| size: As ASCII representation of the size of | ||
| the variable's value. | ||
|
|
||
|
|
||
| In addition, two other magic binary files are provided | ||
| in the top-level directory and are used for adding and | ||
| removing variables: | ||
|
|
||
| new_var: Takes a "struct efi_variable" and | ||
| instructs the EFI firmware to create a | ||
| new variable. | ||
|
|
||
| del_var: Takes a "struct efi_variable" and | ||
| instructs the EFI firmware to remove any | ||
| variable that has a matching vendor GUID | ||
| and variable key name. |
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31
trunk/Documentation/ABI/testing/configfs-spear-pcie-gadget
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| What: /config/pcie-gadget | ||
| Date: Feb 2011 | ||
| KernelVersion: 2.6.37 | ||
| Contact: Pratyush Anand <pratyush.anand@st.com> | ||
| Description: | ||
|
|
||
| Interface is used to configure selected dual mode PCIe controller | ||
| as device and then program its various registers to configure it | ||
| as a particular device type. | ||
| This interfaces can be used to show spear's PCIe device capability. | ||
|
|
||
| Nodes are only visible when configfs is mounted. To mount configfs | ||
| in /config directory use: | ||
| # mount -t configfs none /config/ | ||
|
|
||
| For nth PCIe Device Controller | ||
| /config/pcie-gadget.n/ | ||
| link ... used to enable ltssm and read its status. | ||
| int_type ...used to configure and read type of supported | ||
| interrupt | ||
| no_of_msi ... used to configure number of MSI vector needed and | ||
| to read no of MSI granted. | ||
| inta ... write 1 to assert INTA and 0 to de-assert. | ||
| send_msi ... write MSI vector to be sent. | ||
| vendor_id ... used to write and read vendor id (hex) | ||
| device_id ... used to write and read device id (hex) | ||
| bar0_size ... used to write and read bar0_size | ||
| bar0_address ... used to write and read bar0 mapped area in hex. | ||
| bar0_rw_offset ... used to write and read offset of bar0 where | ||
| bar0_data will be written or read. | ||
| bar0_data ... used to write and read data at bar0_rw_offset. |
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| Where: /dev/pstore/... | ||
| Date: March 2011 | ||
| Kernel Version: 2.6.39 | ||
| Contact: tony.luck@intel.com | ||
| Description: Generic interface to platform dependent persistent storage. | ||
|
|
||
| Platforms that provide a mechanism to preserve some data | ||
| across system reboots can register with this driver to | ||
| provide a generic interface to show records captured in | ||
| the dying moments. In the case of a panic the last part | ||
| of the console log is captured, but other interesting | ||
| data can also be saved. | ||
|
|
||
| # mount -t pstore -o kmsg_bytes=8000 - /dev/pstore | ||
|
|
||
| $ ls -l /dev/pstore | ||
| total 0 | ||
| -r--r--r-- 1 root root 7896 Nov 30 15:38 dmesg-erst-1 | ||
|
|
||
| Different users of this interface will result in different | ||
| filename prefixes. Currently two are defined: | ||
|
|
||
| "dmesg" - saved console log | ||
| "mce" - architecture dependent data from fatal h/w error | ||
|
|
||
| Once the information in a file has been read, removing | ||
| the file will signal to the underlying persistent storage | ||
| device that it can reclaim the space for later re-use. | ||
|
|
||
| $ rm /dev/pstore/dmesg-erst-1 | ||
|
|
||
| The expectation is that all files in /dev/pstore | ||
| will be saved elsewhere and erased from persistent store | ||
| soon after boot to free up space ready for the next | ||
| catastrophe. | ||
|
|
||
| The 'kmsg_bytes' mount option changes the target amount of | ||
| data saved on each oops/panic. Pstore saves (possibly | ||
| multiple) files based on the record size of the underlying | ||
| persistent storage until at least this amount is reached. | ||
| Default is 10 Kbytes. |
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