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[S390] Convert s390 to GENERIC_CLOCKEVENTS.

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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>
This commit is contained in:
Heiko Carstens
2008-04-17 07:46:25 +02:00
parent d7b906897e
commit 5a62b19219
9 changed files with 98 additions and 228 deletions
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9
arch/s390/kernel/s390_ext.c
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@ -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) {