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authorRichard Purdie <richard@openedhand.com>2007-05-29 13:31:42 +0100
committerDavid Woodhouse <dwmw2@infradead.org>2007-06-28 20:18:02 +0100
commit4b23aff083649eafa141ed69ad0ff59ba639edf8 (patch)
tree92baaa2c23706f8a6b118ce17b99ee378863a9d0 /fs/minix
parent1100b47ea557e1cd6d9b71fe7ba1a189ed8bf276 (diff)
[MTD] oops and panic message logging to MTD device
Kernel oops and panic messages are invaluable when debugging crashes. These messages often don't make it to flash based logging methods (say a syslog on jffs2) due to the overheads involved in writing to flash. This patch allows you to turn an MTD partition into a circular log buffer where kernel oops and panic messages are written to. The messages are obtained by registering a console driver and checking oops_in_progress. Erases are performed in advance to maximise the chances of a saving messages. To activate it, add console=ttyMTDx to the kernel commandline (where x is the mtd device number to use). Signed-off-by: Richard Purdie <rpurdie@openedhand.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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