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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2008-03-05 12:37:08 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2008-03-05 12:37:17 +0100 |
| commit | 5ccd0e43bb916872022df974d0f39337797d9277 (patch) | |
| tree | d87472ab01f467187ae6b3024b28939ab6672783 /arch/s390 | |
| parent | 9361a492cded45af2c3e7f50dbec9dd6dab49861 (diff) | |
| download | linux-5ccd0e43bb916872022df974d0f39337797d9277.tar.bz2 | |
[S390] idle: Fix machine check handling in idle loop.
If a machine check handling is pending when the idle loop is entered
default_idle will be left with timer ticks and virtual timer disabled.
Fix this by "calling" the idle_chain. Also a BUG_ON(!in_interrupt) in
start_hz_timer must be removed since the function now gets called from
non interrupt context as well.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/kernel/process.c | 4 | ||||
| -rw-r--r-- | arch/s390/kernel/time.c | 2 |
2 files changed, 4 insertions, 2 deletions
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c index 1c59ec161cf8..ce203154d8ce 100644 --- a/arch/s390/kernel/process.c +++ b/arch/s390/kernel/process.c @@ -152,6 +152,10 @@ static void default_idle(void) local_mcck_disable(); if (test_thread_flag(TIF_MCCK_PENDING)) { local_mcck_enable(); + /* disable monitor call class 0 */ + __ctl_clear_bit(8, 15); + atomic_notifier_call_chain(&idle_chain, S390_CPU_NOT_IDLE, + hcpu); local_irq_enable(); s390_handle_mcck(); return; diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c index 76a5dd1b4ce9..cb232c155360 100644 --- a/arch/s390/kernel/time.c +++ b/arch/s390/kernel/time.c @@ -209,8 +209,6 @@ static void stop_hz_timer(void) */ static void start_hz_timer(void) { - BUG_ON(!in_interrupt()); - if (!cpu_isset(smp_processor_id(), nohz_cpu_mask)) return; account_ticks(get_clock()); |