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[S390] ftrace: dont trace machine check handler
author
Heiko Carstens
<heiko.carstens@de.ibm.com>
Thu, 26 Mar 2009 14:23:59 +0000
(15:23 +0100)
committer
Martin Schwidefsky
<schwidefsky@de.ibm.com>
Thu, 26 Mar 2009 14:24:09 +0000
(15:24 +0100)
The ftrace code is currently not reentrant, so we better don't trace
our machine check handler. Machine checks are handled like NMIs on s390.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
drivers/s390/s390mach.c
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diff --git
a/drivers/s390/s390mach.c
b/drivers/s390/s390mach.c
index
92b0417
..
8e43705
100644
(file)
--- a/
drivers/s390/s390mach.c
+++ b/
drivers/s390/s390mach.c
@@
-357,8
+357,7
@@
s390_revalidate_registers(struct mci *mci)
/*
* machine check handler.
*/
-void
-s390_do_machine_check(struct pt_regs *regs)
+void notrace s390_do_machine_check(struct pt_regs *regs)
{
static DEFINE_SPINLOCK(ipd_lock);
static unsigned long long last_ipd;