From 003bb8ab7cecbfd1830bbccf9c6a9e2047d27c5c Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Tue, 26 Oct 2010 14:20:40 -0700 Subject: documentation: update sysrq.txt magic sysrq keys Update Documentation/sysrq.txt magic sysrq keys: - 'g' is for kgdb (not arch-specific); - add 2 new uses for 'v', remove the Voyager info; - add 'y' info (SPARC-64 specific); Signed-off-by: Randy Dunlap Cc: Jason Wessel Cc: "David S. Miller" Cc: "James E.J. Bottomley" Cc: David Airlie Acked-by: Alexander Shishkin Signed-off-by: Linus Torvalds --- Documentation/sysrq.txt | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'Documentation/sysrq.txt') diff --git a/Documentation/sysrq.txt b/Documentation/sysrq.txt index 5c17196c8fe9..312e3754e8c5 100644 --- a/Documentation/sysrq.txt +++ b/Documentation/sysrq.txt @@ -75,7 +75,7 @@ On all - write a character to /proc/sysrq-trigger. e.g.: 'f' - Will call oom_kill to kill a memory hog process. -'g' - Used by kgdb on ppc and sh platforms. +'g' - Used by kgdb (kernel debugger) 'h' - Will display help (actually any other key than those listed here will display help. but 'h' is easy to remember :-) @@ -110,12 +110,15 @@ On all - write a character to /proc/sysrq-trigger. e.g.: 'u' - Will attempt to remount all mounted filesystems read-only. -'v' - Dumps Voyager SMP processor info to your console. +'v' - Forcefully restores framebuffer console +'v' - Causes ETM buffer dump [ARM-specific] 'w' - Dumps tasks that are in uninterruptable (blocked) state. 'x' - Used by xmon interface on ppc/powerpc platforms. +'y' - Show global CPU Registers [SPARC-64 specific] + 'z' - Dump the ftrace buffer '0'-'9' - Sets the console log level, controlling which kernel messages -- cgit v1.2.3-59-g8ed1b