[PATCH] Kconfig.debug: Set DEBUG_MUTEX to off by default

[safe/jmp/linux-2.6] / lib / cpumask.c

diff --git a/lib/cpumask.c b/lib/cpumask.c
index ba2f854..3a67dc5 100644 (file)
--- 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);