[IA64] Shrink shadow_flush_counts to a short array to save 8k of per_cpu area.

[net-next-2.6.git] / arch / ia64 / kernel / smp.c

diff --git a/arch/ia64/kernel/smp.c b/arch/ia64/kernel/smp.c
index 3676468612b607fbfacbd4447941b1e1253cea48..da8f020d82c1f5acb7e20fc2dd6ef4a1b8d86333 100644 (file)
--- a/arch/ia64/kernel/smp.c
+++ b/arch/ia64/kernel/smp.c
@@ -58,7 +58,7 @@ static struct local_tlb_flush_counts {
        unsigned int count;
 } __attribute__((__aligned__(32))) local_tlb_flush_counts[NR_CPUS];
 
-static DEFINE_PER_CPU(unsigned int, shadow_flush_counts[NR_CPUS]) ____cacheline_aligned;
+static DEFINE_PER_CPU(unsigned short, shadow_flush_counts[NR_CPUS]) ____cacheline_aligned;
 
 #define IPI_CALL_FUNC          0
 #define IPI_CPU_STOP           1
@@ -254,7 +254,7 @@ smp_local_flush_tlb(void)
 void
 smp_flush_tlb_cpumask(cpumask_t xcpumask)
 {
-       unsigned int *counts = __ia64_per_cpu_var(shadow_flush_counts);
+       unsigned short *counts = __ia64_per_cpu_var(shadow_flush_counts);
        cpumask_t cpumask = xcpumask;
        int mycpu, cpu, flush_mycpu = 0;
 
@@ -262,7 +262,7 @@ smp_flush_tlb_cpumask(cpumask_t xcpumask)
        mycpu = smp_processor_id();
 
        for_each_cpu_mask(cpu, cpumask)
-               counts[cpu] = local_tlb_flush_counts[cpu].count;
+               counts[cpu] = local_tlb_flush_counts[cpu].count & 0xffff;
 
        mb();
        for_each_cpu_mask(cpu, cpumask) {
@@ -276,7 +276,7 @@ smp_flush_tlb_cpumask(cpumask_t xcpumask)
                smp_local_flush_tlb();
 
        for_each_cpu_mask(cpu, cpumask)
-               while(counts[cpu] == local_tlb_flush_counts[cpu].count)
+               while(counts[cpu] == (local_tlb_flush_counts[cpu].count & 0xffff))
                        udelay(FLUSH_DELAY);
 
        preempt_enable();