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Commit b78936e1 authored by Mike Travis's avatar Mike Travis
Browse files

xen: convert to cpumask_var_t and new cpumask primitives. 



Simple change, and eventual space saving when NR_CPUS >> nr_cpu_ids.

Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
Signed-off-by: default avatarMike Travis <travis@sgi.com>
Cc: Jeremy Fitzhardinge <jeremy@xensource.com>
parent 22f65d31

arch/x86/xen/smp.c

+6 −3
Original line number Diff line number Diff line
@@ -33,7 +33,7 @@ 
#include "xen-ops.h"

#include "mmu.h"



cpumask_t xen_cpu_initialized_map;

cpumask_var_t xen_cpu_initialized_map;



static DEFINE_PER_CPU(int, resched_irq);

static DEFINE_PER_CPU(int, callfunc_irq);
@@ -192,7 +192,10 @@ static void __init xen_smp_prepare_cpus(unsigned int max_cpus) 
	if (xen_smp_intr_init(0))

		BUG();



	xen_cpu_initialized_map = cpumask_of_cpu(0);

	if (!alloc_cpumask_var(&xen_cpu_initialized_map, GFP_KERNEL))

		panic("could not allocate xen_cpu_initialized_map\n");



	cpumask_copy(xen_cpu_initialized_map, cpumask_of(0));



	/* Restrict the possible_map according to max_cpus. */

	while ((num_possible_cpus() > 1) && (num_possible_cpus() > max_cpus)) {
@@ -221,7 +224,7 @@ cpu_initialize_context(unsigned int cpu, struct task_struct *idle) 
	struct vcpu_guest_context *ctxt;

	struct desc_struct *gdt;



	if (cpu_test_and_set(cpu, xen_cpu_initialized_map))

	if (cpumask_test_and_set_cpu(cpu, xen_cpu_initialized_map))

		return 0;



	ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);

arch/x86/xen/suspend.c

+2 −1
Original line number Diff line number Diff line
@@ -35,7 +35,8 @@ void xen_post_suspend(int suspend_cancelled) 
			pfn_to_mfn(xen_start_info->console.domU.mfn);

	} else {

#ifdef CONFIG_SMP

		xen_cpu_initialized_map = cpu_online_map;

		BUG_ON(xen_cpu_initialized_map == NULL);

		cpumask_copy(xen_cpu_initialized_map, cpu_online_mask);

#endif

		xen_vcpu_restore();

	}

arch/x86/xen/xen-ops.h

+1 −1
Original line number Diff line number Diff line
@@ -58,7 +58,7 @@ void __init xen_init_spinlocks(void); 
__cpuinit void xen_init_lock_cpu(int cpu);

void xen_uninit_lock_cpu(int cpu);



extern cpumask_t xen_cpu_initialized_map;

extern cpumask_var_t xen_cpu_initialized_map;

#else

static inline void xen_smp_init(void) {}

#endif