diff options
author | Ingo Molnar <mingo@elte.hu> | 2011-01-07 14:14:15 +0100 |
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committer | Ingo Molnar <mingo@elte.hu> | 2011-01-07 14:14:15 +0100 |
commit | 1c2a48cf65580a276552151eb8f78d78c55b828e (patch) | |
tree | 68ed0628a276b33cb5aa0ad4899c1afe0a33a69d /arch/s390/lib/delay.c | |
parent | 0aa002fe602939370e9476e5ec32b562000a0425 (diff) | |
parent | cb600d2f83c854ec3d6660063e4466431999489b (diff) |
Merge branch 'linus' into x86/apic-cleanups
Conflicts:
arch/x86/include/asm/io_apic.h
Merge reason: Resolve the conflict, update to a more recent -rc base
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/s390/lib/delay.c')
-rw-r--r-- | arch/s390/lib/delay.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/arch/s390/lib/delay.c b/arch/s390/lib/delay.c index 752b362bf651d..7c37ec359ec29 100644 --- a/arch/s390/lib/delay.c +++ b/arch/s390/lib/delay.c @@ -29,17 +29,21 @@ static void __udelay_disabled(unsigned long long usecs) { unsigned long mask, cr0, cr0_saved; u64 clock_saved; + u64 end; + mask = psw_kernel_bits | PSW_MASK_WAIT | PSW_MASK_EXT; + end = get_clock() + (usecs << 12); clock_saved = local_tick_disable(); - set_clock_comparator(get_clock() + (usecs << 12)); __ctl_store(cr0_saved, 0, 0); cr0 = (cr0_saved & 0xffff00e0) | 0x00000800; __ctl_load(cr0 , 0, 0); - mask = psw_kernel_bits | PSW_MASK_WAIT | PSW_MASK_EXT; lockdep_off(); - trace_hardirqs_on(); - __load_psw_mask(mask); - local_irq_disable(); + do { + set_clock_comparator(end); + trace_hardirqs_on(); + __load_psw_mask(mask); + local_irq_disable(); + } while (get_clock() < end); lockdep_on(); __ctl_load(cr0_saved, 0, 0); local_tick_enable(clock_saved); |