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| author | Richard Purdie <richard@openedhand.com> | 2007-05-29 16:31:42 +0400 |
|---|---|---|
| committer | David Woodhouse <dwmw2@infradead.org> | 2007-06-28 23:18:02 +0400 |
| commit | 4b23aff083649eafa141ed69ad0ff59ba639edf8 (patch) | |
| tree | 92baaa2c23706f8a6b118ce17b99ee378863a9d0 /drivers/mtd/mtd_blkdevs.c | |
| parent | 1100b47ea557e1cd6d9b71fe7ba1a189ed8bf276 (diff) | |
| download | linux-4b23aff083649eafa141ed69ad0ff59ba639edf8.tar.xz | |
[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>
Diffstat (limited to 'drivers/mtd/mtd_blkdevs.c')
0 files changed, 0 insertions, 0 deletions