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authorAlex Shi <alex.shi@intel.com>2012-01-13 23:53:35 +0800
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2012-01-24 12:20:24 -0500
commit2113f4691663f033189bf43d7501c6d29cd685a5 (patch)
tree6e0ecc6096fd174470e41e7d08fdee925f79964d /arch/x86/xen
parentcd9db80e5257682a7f7ab245a2459648b3c8d268 (diff)
xen: use this_cpu_xxx replace percpu_xxx funcs
percpu_xxx funcs are duplicated with this_cpu_xxx funcs, so replace them for further code clean up. I don't know much of xen code. But, since the code is in x86 architecture, the percpu_xxx is exactly same as this_cpu_xxx serials functions. So, the change is safe. Signed-off-by: Alex Shi <alex.shi@intel.com> Acked-by: Christoph Lameter <cl@gentwo.org> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'arch/x86/xen')
-rw-r--r--arch/x86/xen/enlighten.c6
-rw-r--r--arch/x86/xen/irq.c8
-rw-r--r--arch/x86/xen/mmu.c20
-rw-r--r--arch/x86/xen/multicalls.h2
-rw-r--r--arch/x86/xen/smp.c2
5 files changed, 19 insertions, 19 deletions
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 12eb07bfb267..312c9e3cb635 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -777,11 +777,11 @@ static DEFINE_PER_CPU(unsigned long, xen_cr0_value);
static unsigned long xen_read_cr0(void)
{
- unsigned long cr0 = percpu_read(xen_cr0_value);
+ unsigned long cr0 = this_cpu_read(xen_cr0_value);
if (unlikely(cr0 == 0)) {
cr0 = native_read_cr0();
- percpu_write(xen_cr0_value, cr0);
+ this_cpu_write(xen_cr0_value, cr0);
}
return cr0;
@@ -791,7 +791,7 @@ static void xen_write_cr0(unsigned long cr0)
{
struct multicall_space mcs;
- percpu_write(xen_cr0_value, cr0);
+ this_cpu_write(xen_cr0_value, cr0);
/* Only pay attention to cr0.TS; everything else is
ignored. */
diff --git a/arch/x86/xen/irq.c b/arch/x86/xen/irq.c
index 8bbb465b6f0a..157337657971 100644
--- a/arch/x86/xen/irq.c
+++ b/arch/x86/xen/irq.c
@@ -26,7 +26,7 @@ static unsigned long xen_save_fl(void)
struct vcpu_info *vcpu;
unsigned long flags;
- vcpu = percpu_read(xen_vcpu);
+ vcpu = this_cpu_read(xen_vcpu);
/* flag has opposite sense of mask */
flags = !vcpu->evtchn_upcall_mask;
@@ -50,7 +50,7 @@ static void xen_restore_fl(unsigned long flags)
make sure we're don't switch CPUs between getting the vcpu
pointer and updating the mask. */
preempt_disable();
- vcpu = percpu_read(xen_vcpu);
+ vcpu = this_cpu_read(xen_vcpu);
vcpu->evtchn_upcall_mask = flags;
preempt_enable_no_resched();
@@ -72,7 +72,7 @@ static void xen_irq_disable(void)
make sure we're don't switch CPUs between getting the vcpu
pointer and updating the mask. */
preempt_disable();
- percpu_read(xen_vcpu)->evtchn_upcall_mask = 1;
+ this_cpu_read(xen_vcpu)->evtchn_upcall_mask = 1;
preempt_enable_no_resched();
}
PV_CALLEE_SAVE_REGS_THUNK(xen_irq_disable);
@@ -86,7 +86,7 @@ static void xen_irq_enable(void)
the caller is confused and is trying to re-enable interrupts
on an indeterminate processor. */
- vcpu = percpu_read(xen_vcpu);
+ vcpu = this_cpu_read(xen_vcpu);
vcpu->evtchn_upcall_mask = 0;
/* Doesn't matter if we get preempted here, because any
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 58a0e46c404d..1a309ee2331e 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -1071,14 +1071,14 @@ static void drop_other_mm_ref(void *info)
struct mm_struct *mm = info;
struct mm_struct *active_mm;
- active_mm = percpu_read(cpu_tlbstate.active_mm);
+ active_mm = this_cpu_read(cpu_tlbstate.active_mm);
- if (active_mm == mm && percpu_read(cpu_tlbstate.state) != TLBSTATE_OK)
+ if (active_mm == mm && this_cpu_read(cpu_tlbstate.state) != TLBSTATE_OK)
leave_mm(smp_processor_id());
/* If this cpu still has a stale cr3 reference, then make sure
it has been flushed. */
- if (percpu_read(xen_current_cr3) == __pa(mm->pgd))
+ if (this_cpu_read(xen_current_cr3) == __pa(mm->pgd))
load_cr3(swapper_pg_dir);
}
@@ -1185,17 +1185,17 @@ static void __init xen_pagetable_setup_done(pgd_t *base)
static void xen_write_cr2(unsigned long cr2)
{
- percpu_read(xen_vcpu)->arch.cr2 = cr2;
+ this_cpu_read(xen_vcpu)->arch.cr2 = cr2;
}
static unsigned long xen_read_cr2(void)
{
- return percpu_read(xen_vcpu)->arch.cr2;
+ return this_cpu_read(xen_vcpu)->arch.cr2;
}
unsigned long xen_read_cr2_direct(void)
{
- return percpu_read(xen_vcpu_info.arch.cr2);
+ return this_cpu_read(xen_vcpu_info.arch.cr2);
}
static void xen_flush_tlb(void)
@@ -1278,12 +1278,12 @@ static void xen_flush_tlb_others(const struct cpumask *cpus,
static unsigned long xen_read_cr3(void)
{
- return percpu_read(xen_cr3);
+ return this_cpu_read(xen_cr3);
}
static void set_current_cr3(void *v)
{
- percpu_write(xen_current_cr3, (unsigned long)v);
+ this_cpu_write(xen_current_cr3, (unsigned long)v);
}
static void __xen_write_cr3(bool kernel, unsigned long cr3)
@@ -1306,7 +1306,7 @@ static void __xen_write_cr3(bool kernel, unsigned long cr3)
xen_extend_mmuext_op(&op);
if (kernel) {
- percpu_write(xen_cr3, cr3);
+ this_cpu_write(xen_cr3, cr3);
/* Update xen_current_cr3 once the batch has actually
been submitted. */
@@ -1322,7 +1322,7 @@ static void xen_write_cr3(unsigned long cr3)
/* Update while interrupts are disabled, so its atomic with
respect to ipis */
- percpu_write(xen_cr3, cr3);
+ this_cpu_write(xen_cr3, cr3);
__xen_write_cr3(true, cr3);
diff --git a/arch/x86/xen/multicalls.h b/arch/x86/xen/multicalls.h
index dee79b78a90f..9c2e74f9096c 100644
--- a/arch/x86/xen/multicalls.h
+++ b/arch/x86/xen/multicalls.h
@@ -47,7 +47,7 @@ static inline void xen_mc_issue(unsigned mode)
xen_mc_flush();
/* restore flags saved in xen_mc_batch */
- local_irq_restore(percpu_read(xen_mc_irq_flags));
+ local_irq_restore(this_cpu_read(xen_mc_irq_flags));
}
/* Set up a callback to be called when the current batch is flushed */
diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c
index 041d4fe9dfe4..449f86897db3 100644
--- a/arch/x86/xen/smp.c
+++ b/arch/x86/xen/smp.c
@@ -76,7 +76,7 @@ static void __cpuinit cpu_bringup(void)
xen_setup_cpu_clockevents();
set_cpu_online(cpu, true);
- percpu_write(cpu_state, CPU_ONLINE);
+ this_cpu_write(cpu_state, CPU_ONLINE);
wmb();
/* We can take interrupts now: we're officially "up". */