diff options
Diffstat (limited to 'Documentation/ABI/testing/pstore')
| -rw-r--r-- | Documentation/ABI/testing/pstore | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/Documentation/ABI/testing/pstore b/Documentation/ABI/testing/pstore index 5fca9f5e10a3..d3cff4a7ee10 100644 --- a/Documentation/ABI/testing/pstore +++ b/Documentation/ABI/testing/pstore @@ -1,6 +1,7 @@ -Where: /sys/fs/pstore/... (or /dev/pstore/...) +What: /sys/fs/pstore/... +What: /dev/pstore/... Date: March 2011 -Kernel Version: 2.6.39 +KernelVersion: 2.6.39 Contact: tony.luck@intel.com Description: Generic interface to platform dependent persistent storage. @@ -9,25 +10,25 @@ Description: Generic interface to platform dependent persistent storage. 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. + data can also be saved:: - # mount -t pstore -o kmsg_bytes=8000 - /sys/fs/pstore + # mount -t pstore -o kmsg_bytes=8000 - /sys/fs/pstore - $ ls -l /sys/fs/pstore/ - total 0 - -r--r--r-- 1 root root 7896 Nov 30 15:38 dmesg-erst-1 + $ ls -l /sys/fs/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 + - "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. + device that it can reclaim the space for later re-use:: - $ rm /sys/fs/pstore/dmesg-erst-1 + $ rm /sys/fs/pstore/dmesg-erst-1 The expectation is that all files in /sys/fs/pstore/ will be saved elsewhere and erased from persistent store @@ -44,4 +45,3 @@ Description: Generic interface to platform dependent persistent storage. backends are available, the preferred backend may be set by passing the pstore.backend= argument to the kernel at boot time. - |