commit 7b543a5334ff4ea2e3ad3b777fc23cdb8072a988
author Tejun Heo <tj@kernel.org> Sat Dec 18 16:30:05 2010 +0100
committer Tejun Heo <tj@kernel.org> Thu Dec 30 12:22:03 2010 +0100
tree 8fbdf5275411190f78f3bdee3c40e87285bf8e30
parent 0a3aee0da4402aa19b66e458038533c896fb80c6

x86: Replace uses of current_cpu_data with this_cpu ops

Replace all uses of current_cpu_data with this_cpu operations on the
per cpu structure cpu_info.  The scala accesses are replaced with the
matching this_cpu ops which results in smaller and more efficient
code.

In the long run, it might be a good idea to remove cpu_data() macro
too and use per_cpu macro directly.

tj: updated description

Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

arch/x86/kernel/apic/apic.c

diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 3f838d5..8accfe3 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -516,7 +516,7 @@
 {
 	struct clock_event_device *levt = &__get_cpu_var(lapic_events);
 
-	if (cpu_has(&current_cpu_data, X86_FEATURE_ARAT)) {
+	if (cpu_has(__this_cpu_ptr(&cpu_info), X86_FEATURE_ARAT)) {
 		lapic_clockevent.features &= ~CLOCK_EVT_FEAT_C3STOP;
 		/* Make LAPIC timer preferrable over percpu HPET */
 		lapic_clockevent.rating = 150;