X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;ds=sidebyside;f=lib%2Fcpumask.c;h=3a67dc5ada7d5b2655ae461890519e995d50d7c9;hb=c259cc281255bdb30ceba190bfd7f37e3ae3fc85;hp=ba2f8543052c7a0158471d2a326b8c9b45e1386a;hpb=3d18bd74a22d0bed3bc81fc64c4ba6344a10f155;p=powerpc.git

diff --git a/lib/cpumask.c b/lib/cpumask.c
index ba2f854305..3a67dc5ada 100644
--- a/lib/cpumask.c
+++ b/lib/cpumask.c
@@ -14,3 +14,32 @@ int __next_cpu(int n, const cpumask_t *srcp)
 	return min_t(int, NR_CPUS, find_next_bit(srcp->bits, NR_CPUS, n+1));
 }
 EXPORT_SYMBOL(__next_cpu);
+
+/*
+ * Find the highest possible smp_processor_id()
+ *
+ * Note: if we're prepared to assume that cpu_possible_map never changes
+ * (reasonable) then this function should cache its return value.
+ */
+int highest_possible_processor_id(void)
+{
+	unsigned int cpu;
+	unsigned highest = 0;
+
+	for_each_cpu_mask(cpu, cpu_possible_map)
+		highest = cpu;
+	return highest;
+}
+EXPORT_SYMBOL(highest_possible_processor_id);
+
+int __any_online_cpu(const cpumask_t *mask)
+{
+	int cpu;
+
+	for_each_cpu_mask(cpu, *mask) {
+		if (cpu_online(cpu))
+			break;
+	}
+	return cpu;
+}
+EXPORT_SYMBOL(__any_online_cpu);