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

Making allmodconfig will break the current build.  This patch shrinks
the per_cpu__shadow_flush_counts from 16k to 8k which frees enough space
to allow allmodconfig to successfully complete.

Fixes http://bugzilla.kernel.org/show_bug.cgi?id=11338

Signed-off-by: Robin Holt <holt@sgi.com>
Acked-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Robin Holt 2008-08-15 09:21:24 -05:00 committed by Tony Luck
parent ea42b8ce8c
commit 97653f92c0
1 changed files with 4 additions and 4 deletions
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8
arch/ia64/kernel/smp.c
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@ -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();