[S390] ftrace: disable tracing on idle psw
authorHeiko Carstens <heiko.carstens@de.ibm.com>
Fri, 14 Nov 2008 17:18:04 +0000 (18:18 +0100)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Fri, 14 Nov 2008 17:18:53 +0000 (18:18 +0100)
commit632448f65001c4935ed0d3bb362017d773da2eca
treed1daf415fecdc1b9e353e3ad82e30c555961d325
parentaf4c68740e848019d8d14c52704ed8eacceddac6
[S390] ftrace: disable tracing on idle psw

Disable tracing on idle psw. Otherwise it would give us huge
preempt off times for idle. Which is rather pointless.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
arch/s390/kernel/process.c