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cpumask: use mm_cpumask() wrapper: x86

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Makes code futureproof against the impending change to mm->cpu_vm_mask (to be a pointer).

It's also a chance to use the new cpumask_ ops which take a pointer
(the older ones are deprecated, but there's no hurry for arch code).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2009-09-24 09:34:51 -06:00
parent fa40699b97
commit 78f1c4d6b0
4 changed files with 15 additions and 14 deletions
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6
arch/x86/include/asm/mmu_context.h
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@@ -37,12 +37,12 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
if (likely(prev != next)) {
/* stop flush ipis for the previous mm */
cpu_clear(cpu, prev->cpu_vm_mask);
cpumask_clear_cpu(cpu, mm_cpumask(prev));
#ifdef CONFIG_SMP
percpu_write(cpu_tlbstate.state, TLBSTATE_OK);
percpu_write(cpu_tlbstate.active_mm, next);
#endif
cpu_set(cpu, next->cpu_vm_mask);
cpumask_set_cpu(cpu, mm_cpumask(next));
/* Re-load page tables */
load_cr3(next->pgd);
@@ -58,7 +58,7 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
percpu_write(cpu_tlbstate.state, TLBSTATE_OK);
BUG_ON(percpu_read(cpu_tlbstate.active_mm) != next);
if (!cpu_test_and_set(cpu, next->cpu_vm_mask)) {
if (!cpumask_test_and_set_cpu(cpu, mm_cpumask(next))) {
/* We were in lazy tlb mode and leave_mm disabled
* tlb flush IPI delivery. We must reload CR3
* to make sure to use no freed page tables.