linux-dev - Linux kernel development work

Age	Commit message (Collapse)	Author	Files	Lines
2007-07-11	[MTD] Add sync/unblank function to mtdoops	Richard Purdie	1	-23/+34
	mtdoops wasn't ensuring data was flushed to flash in crash situations after recent changes in mainline kernels as tracking the oops_in_progress variable was no longer enough. We can use the "unblank" console call as a sync call to tell us to write out the buffer though. Therefore add a sync function to mtdoops and call this when console unblank events occur. Signed-off-by: Richard Purdie <rpurdie@openedhand.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-06-28	[MTD] oops and panic message logging to MTD device	Richard Purdie	1	-0/+365
	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>