Commit 97653f92 authored by Robin Holt's avatar Robin Holt Committed by Tony Luck
Browse files

[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: default avatarRobin Holt <holt@sgi.com>
Acked-by: default avatarJack Steiner <steiner@sgi.com>
Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
parent ea42b8ce

arch/ia64/kernel/smp.c

+4 −4
Original line number Diff line number Diff line
@@ -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();

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