cpumask: Use all NR_CPUS bits unless CONFIG_CPUMASK_OFFSTACK

[pandora-kernel.git] / include / linux / cpumask.h

diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index 94a2ab8..d4bf526 100644 (file)
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -510,9 +510,6 @@ extern cpumask_t cpu_active_map;
        [BITS_TO_LONGS(NR_CPUS)-1] = CPU_MASK_LAST_WORD \
 }
 
-/* This produces more efficient code. */
-#define nr_cpumask_bits        NR_CPUS
-
 #else /* NR_CPUS > BITS_PER_LONG */
 
 #define CPU_BITS_ALL                                           \
@@ -520,9 +517,15 @@ extern cpumask_t cpu_active_map;
        [0 ... BITS_TO_LONGS(NR_CPUS)-2] = ~0UL,                \
        [BITS_TO_LONGS(NR_CPUS)-1] = CPU_MASK_LAST_WORD         \
 }
+#endif /* NR_CPUS > BITS_PER_LONG */
 
+#ifdef CONFIG_CPUMASK_OFFSTACK
+/* Assuming NR_CPUS is huge, a runtime limit is more efficient.  Also,
+ * not all bits may be allocated. */
 #define nr_cpumask_bits        nr_cpu_ids
-#endif /* NR_CPUS > BITS_PER_LONG */
+#else
+#define nr_cpumask_bits        NR_CPUS
+#endif
 
 /* verify cpu argument to cpumask_* operators */
 static inline unsigned int cpumask_check(unsigned int cpu)