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| author | Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> | 2013-06-05 20:51:32 +0200 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-06-20 09:04:49 +0200 |
| commit | d7563c94f728d8c9228cfddbb044c843b2e243e8 (patch) | |
| tree | a1aa32537e0a3946f36cc9b5e3f2e05ac2a1c3b2 /Documentation | |
| parent | powerpc/pseries: Introduce generic read function to read nvram-partitions (diff) | |
| download | linux-d7563c94f728d8c9228cfddbb044c843b2e243e8.tar.xz linux-d7563c94f728d8c9228cfddbb044c843b2e243e8.zip | |
powerpc/pseries: Read/Write oops nvram partition via pstore
IBM's p series machines provide persistent storage for LPARs through NVRAM.
NVRAM's lnx,oops-log partition is used to log oops messages.
Currently the kernel provides the contents of p-series NVRAM only as a
simple stream of bytes via /dev/nvram, which must be interpreted in user
space by the nvram command in the powerpc-utils package.
This patch set exploits the pstore subsystem to expose oops partition in
NVRAM as a separate file in /dev/pstore. For instance, Oops messages will be
stored in a file named [dmesg-nvram-2]. In case pstore registration fails it
will fall back to kmsg_dump mechanism.
This patch will read/write the oops messages from/to this partition via pstore.
Signed-off-by: Jim Keniston <jkenisto@us.ibm.com>
Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions