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authorIngo Molnar <mingo@elte.hu>2011-01-07 08:14:15 -0500
committerIngo Molnar <mingo@elte.hu>2011-01-07 08:14:15 -0500
commit1c2a48cf65580a276552151eb8f78d78c55b828e (patch)
tree68ed0628a276b33cb5aa0ad4899c1afe0a33a69d /arch/s390/lib/delay.c
parent0aa002fe602939370e9476e5ec32b562000a0425 (diff)
parentcb600d2f83c854ec3d6660063e4466431999489b (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.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/arch/s390/lib/delay.c b/arch/s390/lib/delay.c
index 752b362bf651..7c37ec359ec2 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)
29{ 29{
30 unsigned long mask, cr0, cr0_saved; 30 unsigned long mask, cr0, cr0_saved;
31 u64 clock_saved; 31 u64 clock_saved;
32 u64 end;
32 33
34 mask = psw_kernel_bits | PSW_MASK_WAIT | PSW_MASK_EXT;
35 end = get_clock() + (usecs << 12);
33 clock_saved = local_tick_disable(); 36 clock_saved = local_tick_disable();
34 set_clock_comparator(get_clock() + (usecs << 12));
35 __ctl_store(cr0_saved, 0, 0); 37 __ctl_store(cr0_saved, 0, 0);
36 cr0 = (cr0_saved & 0xffff00e0) | 0x00000800; 38 cr0 = (cr0_saved & 0xffff00e0) | 0x00000800;
37 __ctl_load(cr0 , 0, 0); 39 __ctl_load(cr0 , 0, 0);
38 mask = psw_kernel_bits | PSW_MASK_WAIT | PSW_MASK_EXT;
39 lockdep_off(); 40 lockdep_off();
40 trace_hardirqs_on(); 41 do {
41 __load_psw_mask(mask); 42 set_clock_comparator(end);
42 local_irq_disable(); 43 trace_hardirqs_on();
44 __load_psw_mask(mask);
45 local_irq_disable();
46 } while (get_clock() < end);
43 lockdep_on(); 47 lockdep_on();
44 __ctl_load(cr0_saved, 0, 0); 48 __ctl_load(cr0_saved, 0, 0);
45 local_tick_enable(clock_saved); 49 local_tick_enable(clock_saved);