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| author |   Heiko Carstens <heiko.carstens@de.ibm.com> | 2008-04-17 07:46:25 +0200 |
|---|---|---|
| committer | Heiko Carstens <heiko.carstens@de.ibm.com> | 2008-04-17 07:47:05 +0200 |
| commit | 5a62b192196af9a798e2f2f4c6a1324e7edf2f4b (patch) | |
| tree | 0aa96ba3153b257000be22e49befbde2b5bd6917 /arch/s390/kernel/s390_ext.c | |
| parent | [S390] genirq/clockevents: move irq affinity prototypes/inlines to interrupt.h (diff) | |
| download | linux-dev-5a62b192196af9a798e2f2f4c6a1324e7edf2f4b.tar.xz linux-dev-5a62b192196af9a798e2f2f4c6a1324e7edf2f4b.zip | |
[S390] Convert s390 to GENERIC_CLOCKEVENTS.
This way we get rid of s390's NO_IDLE_HZ and use the generic dynticks
variant instead. In addition we get high resolution timers for free.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/s390_ext.c')
| -rw-r--r-- | arch/s390/kernel/s390_ext.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/arch/s390/kernel/s390_ext.c b/arch/s390/kernel/s390_ext.c index 3a8772d3baea..947d8c74403b 100644 --- a/arch/s390/kernel/s390_ext.c +++ b/arch/s390/kernel/s390_ext.c @@ -120,12 +120,9 @@ void do_extint(struct pt_regs *regs, unsigned short code) old_regs = set_irq_regs(regs); irq_enter(); s390_idle_check(); - if (S390_lowcore.int_clock >= S390_lowcore.jiffy_timer) - /** - * Make sure that the i/o interrupt did not "overtake" - * the last HZ timer interrupt. - */ - account_ticks(S390_lowcore.int_clock); + if (S390_lowcore.int_clock >= S390_lowcore.clock_comparator) + /* Serve timer interrupts first. */ + clock_comparator_work(); kstat_cpu(smp_processor_id()).irqs[EXTERNAL_INTERRUPT]++; index = ext_hash(code); for (p = ext_int_hash[index]; p; p = p->next) { |