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[S390] ftrace: dont trace machine check handler 

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>
This commit is contained in:
Heiko Carstens 2009-03-26 15:23:59 +01:00 committed by Martin Schwidefsky
parent 92e6ecf392
commit cc54c1e66e
1 changed files with 1 additions and 2 deletions
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3
drivers/s390/s390mach.c
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@ -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;