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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 <randy.dunlap@oracle.com>
Cc: Jason Wessel <jason.wessel@windriver.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: "James E.J. Bottomley" <James.Bottomley@suse.de>
Cc: David Airlie <airlied@linux.ie>
Acked-by: Alexander Shishkin <virtuoso@slind.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Randy Dunlap 2010-10-26 14:20:40 -07:00 committed by Linus Torvalds
parent d2d8f66bb9
commit 003bb8ab7c
1 changed files with 5 additions and 2 deletions
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Documentation/sysrq.txt
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@ -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