x86: Add cpu_mask_to_apicid_and

[linux-2.6-omap-h63xx.git] / arch / x86 / include / asm / bigsmp / apic.h

diff --git a/arch/x86/include/asm/bigsmp/apic.h b/arch/x86/include/asm/bigsmp/apic.h
index dc6225ca48ad58cdfda6618dbcd56412a9fecc81..99f9abacf6a2e3b3d77e6d75adfae5d052016238 100644 (file)
--- a/arch/x86/include/asm/bigsmp/apic.h
+++ b/arch/x86/include/asm/bigsmp/apic.h
@@ -129,6 +129,22 @@ static inline unsigned int cpu_mask_to_apicid(const cpumask_t *cpumask)
        return apicid;
 }
 
+static inline unsigned int cpu_mask_to_apicid_and(const cpumask_t *cpumask,
+                                                 const cpumask_t *andmask)
+{
+       int cpu;
+
+       /*
+        * We're using fixed IRQ delivery, can only return one phys APIC ID.
+        * May as well be the first.
+        */
+       while ((cpu = next_cpu(-1, *cpumask)) < nr_cpu_ids)
+               if (cpu_isset(cpu, *andmask))
+                       return cpu_to_logical_apicid(cpu);
+
+       return BAD_APICID;
+}
+
 static inline u32 phys_pkg_id(u32 cpuid_apic, int index_msb)
 {
        return cpuid_apic >> index_msb;