X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Flinux%2Fcpumask.h;h=a47ad705c63efc2f8b10f28987560056d0e4b1c5;hb=987b0145d94eecf292d8b301228356f44611ab7c;hp=9cbb781d6f808b361a9f7f1a4df50f8ee9bde9a9;hpb=f7ed79d23a47594e7834d66a8f14449796d4f3e6;p=linux-2.6.git

diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index 9cbb781d6..a47ad705c 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -67,7 +67,7 @@
  *
  * int any_online_cpu(mask)		First online cpu in mask
  *
- * for_each_possible_cpu(cpu)		for-loop cpu over cpu_possible_map
+ * for_each_cpu(cpu)			for-loop cpu over cpu_possible_map
  * for_each_online_cpu(cpu)		for-loop cpu over cpu_online_map
  * for_each_present_cpu(cpu)		for-loop cpu over cpu_present_map
  *
@@ -212,15 +212,17 @@ static inline void __cpus_shift_left(cpumask_t *dstp,
 	bitmap_shift_left(dstp->bits, srcp->bits, n, nbits);
 }
 
-#ifdef CONFIG_SMP
-int __first_cpu(const cpumask_t *srcp);
-#define first_cpu(src) __first_cpu(&(src))
-int __next_cpu(int n, const cpumask_t *srcp);
-#define next_cpu(n, src) __next_cpu((n), &(src))
-#else
-#define first_cpu(src)		0
-#define next_cpu(n, src)	1
-#endif
+#define first_cpu(src) __first_cpu(&(src), NR_CPUS)
+static inline int __first_cpu(const cpumask_t *srcp, int nbits)
+{
+	return min_t(int, nbits, find_first_bit(srcp->bits, nbits));
+}
+
+#define next_cpu(n, src) __next_cpu((n), &(src), NR_CPUS)
+static inline int __next_cpu(int n, const cpumask_t *srcp, int nbits)
+{
+	return min_t(int, nbits, find_next_bit(srcp->bits, nbits, n+1));
+}
 
 #define cpumask_of_cpu(cpu)						\
 ({									\
@@ -396,18 +398,28 @@ extern cpumask_t cpu_present_map;
 #define cpu_present(cpu)	((cpu) == 0)
 #endif
 
-#ifdef CONFIG_SMP
-int highest_possible_processor_id(void);
-#define any_online_cpu(mask) __any_online_cpu(&(mask))
-int __any_online_cpu(const cpumask_t *mask);
-#else
-#define highest_possible_processor_id()	0
-#define any_online_cpu(mask)		0
-#endif
+#define any_online_cpu(mask)			\
+({						\
+	int cpu;				\
+	for_each_cpu_mask(cpu, (mask))		\
+		if (cpu_online(cpu))		\
+			break;			\
+	cpu;					\
+})
 
-#define for_each_cpu(cpu)  for_each_cpu_mask((cpu), cpu_possible_map)
+#define for_each_cpu(cpu)	  for_each_cpu_mask((cpu), cpu_possible_map)
 #define for_each_possible_cpu(cpu)  for_each_cpu_mask((cpu), cpu_possible_map)
 #define for_each_online_cpu(cpu)  for_each_cpu_mask((cpu), cpu_online_map)
 #define for_each_present_cpu(cpu) for_each_cpu_mask((cpu), cpu_present_map)
 
+/* Find the highest possible smp_processor_id() */
+#define highest_possible_processor_id() \
+({ \
+	unsigned int cpu, highest = 0; \
+	for_each_cpu_mask(cpu, cpu_possible_map) \
+		highest = cpu; \
+	highest; \
+})
+
+
 #endif /* __LINUX_CPUMASK_H */