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-rw-r--r--Documentation/sysrq.txt1
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diff --git a/Documentation/sysrq.txt b/Documentation/sysrq.txt
index 642f84495b2..2a4cdda4828 100644
--- a/Documentation/sysrq.txt
+++ b/Documentation/sysrq.txt
@@ -116,6 +116,7 @@ On all - write a character to /proc/sysrq-trigger. e.g.:
'w' - Dumps tasks that are in uninterruptable (blocked) state.
'x' - Used by xmon interface on ppc/powerpc platforms.
+ Show global PMU Registers on sparc64.
'y' - Show global CPU Registers [SPARC-64 specific]