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SubjectRe: [RFC] persistent store (version 2) (part 1 of 2)
Date
> As you are adding new sysfs files, you are required to document them in
> Documentation/ABI/ as well.

Is this what you need?

-Tony

---

diff --git a/Documentation/ABI/testing/sysfs-pstore b/Documentation/ABI/testing/sysfs-pstore
new file mode 100644
index 0000000..083fcf7
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-pstore
@@ -0,0 +1,35 @@
+Where: /sys/firmware/pstore/...
+Date: January 2011
+Kernel Version: 2.6.38
+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.
+
+ $ ls -l /sys/firmware/pstore
+ total 0
+ -r--r--r-- 1 root root 7896 Nov 30 15:38 dmesg-1
+ --w------- 1 root root 0 Nov 30 15:38 erase
+
+ 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
+
+ The "erase" file is used to signal that a file has been
+ read and that the underlying platform driver can reclaim
+ the space in the persistent store. Just write the name of
+ the file to be removed to the "erase" file:
+
+ $ echo dmesg-1 > /sys/firmware/pstore/erase
+
+ The expectation is that all files in /sys/firmware/pstore
+ will be saved elsewhere and erased from persistent store
+ soon after boot to free up space ready for the next
+ catastrophe.

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