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Diffstat (limited to 'arch/x86/mm/tlb.c')
-rw-r--r--arch/x86/mm/tlb.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index b3ca1b94065..72a6d4ebe34 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -29,7 +29,7 @@ DEFINE_PER_CPU_SHARED_ALIGNED(struct tlb_state, cpu_tlbstate)
* To avoid global state use 8 different call vectors.
* Each CPU uses a specific vector to trigger flushes on other
* CPUs. Depending on the received vector the target CPUs look into
- * the right per cpu variable for the flush data.
+ * the right array slot for the flush data.
*
* With more than 8 CPUs they are hashed to the 8 available
* vectors. The limited global vector space forces us to this right now.
@@ -44,13 +44,13 @@ union smp_flush_state {
spinlock_t tlbstate_lock;
DECLARE_BITMAP(flush_cpumask, NR_CPUS);
};
- char pad[SMP_CACHE_BYTES];
-} ____cacheline_aligned;
+ char pad[CONFIG_X86_INTERNODE_CACHE_BYTES];
+} ____cacheline_internodealigned_in_smp;
/* State is put into the per CPU data section, but padded
to a full cache line because other CPUs can access it and we don't
want false sharing in the per cpu data segment. */
-static DEFINE_PER_CPU(union smp_flush_state, flush_state);
+static union smp_flush_state flush_state[NUM_INVALIDATE_TLB_VECTORS];
/*
* We cannot call mmdrop() because we are in interrupt context,
@@ -135,7 +135,7 @@ void smp_invalidate_interrupt(struct pt_regs *regs)
* Use that to determine where the sender put the data.
*/
sender = ~regs->orig_ax - INVALIDATE_TLB_VECTOR_START;
- f = &per_cpu(flush_state, sender);
+ f = &flush_state[sender];
if (!cpumask_test_cpu(cpu, to_cpumask(f->flush_cpumask)))
goto out;
@@ -173,7 +173,7 @@ static void flush_tlb_others_ipi(const struct cpumask *cpumask,
/* Caller has disabled preemption */
sender = smp_processor_id() % NUM_INVALIDATE_TLB_VECTORS;
- f = &per_cpu(flush_state, sender);
+ f = &flush_state[sender];
/*
* Could avoid this lock when
@@ -227,8 +227,8 @@ static int __cpuinit init_smp_flush(void)
{
int i;
- for_each_possible_cpu(i)
- spin_lock_init(&per_cpu(flush_state, i).tlbstate_lock);
+ for (i = 0; i < ARRAY_SIZE(flush_state); i++)
+ spin_lock_init(&flush_state[i].tlbstate_lock);
return 0;
}