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Subject[PATCH 28/35] cpumask: CONFIG_BITS_ALL, CONFIG_BITS_NONE and CONFIG_BITS_CPU0 From: Rusty Russell <>
Since we're now preferring raw bitmaps for (eventually rare) static
cpumasks, we replace CPU_MASK_X with CPU_BITS_X.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
---
include/linux/cpumask.h | 44 ++++++++++++++++++++++++--------------------
1 file changed, 24 insertions(+), 20 deletions(-)
--- linux-2.6.28.orig/include/linux/cpumask.h
+++ linux-2.6.28/include/linux/cpumask.h
@@ -53,8 +53,9 @@
*
* size_t cpumask_size() Length of cpumask in bytes.
* const struct cpumask *cpumask_of(cpu) Return cpumask with bit 'cpu' set
- * CPU_MASK_ALL Initializer - all bits set
- * CPU_MASK_NONE Initializer - no bits set
+ * CPU_BITS_ALL Initializer - all bits set
+ * CPU_BITS_NONE Initializer - no bits set
+ * CPU_BITS_CPU0 Initializer - first bit set
* unsigned long *cpumask_bits(mask) Array of unsigned long's in mask
*
* struct cpumask *to_cpumask(const unsigned long[])
@@ -115,6 +116,9 @@ struct cpumask {
typedef struct cpumask cpumask_t;
extern cpumask_t _unused_cpumask_arg_;

+#define CPU_MASK_ALL ((cpumask_t){ CPU_BITS_ALL })
+#define CPU_MASK_NONE ((cpumask_t){ CPU_BITS_NONE })
+#define CPU_MASK_CPU0 ((cpumask_t){ CPU_BITS_CPU0 })
#define cpu_set(cpu, dst) cpumask_set_cpu((cpu), &(dst))
#define cpu_clear(cpu, dst) cpumask_clear_cpu((cpu), &(dst))
#define cpu_test_and_set(cpu, mask) cpumask_test_and_set_cpu((cpu), &(mask))
@@ -400,20 +404,20 @@ static inline const struct cpumask *cpum

#if NR_CPUS <= BITS_PER_LONG

-#define CPU_MASK_ALL \
-(cpumask_t) { { \
- [BITS_TO_LONGS(NR_CPUS)-1] = CPU_MASK_LAST_WORD \
-} }
+#define CPU_BITS_ALL \
+{ \
+ [BITS_TO_LONGS(CONFIG_NR_CPUS)-1] = CPU_MASK_LAST_WORD \
+}

#define CPU_MASK_ALL_PTR (&CPU_MASK_ALL)

#else

-#define CPU_MASK_ALL \
-(cpumask_t) { { \
- [0 ... BITS_TO_LONGS(NR_CPUS)-2] = ~0UL, \
- [BITS_TO_LONGS(NR_CPUS)-1] = CPU_MASK_LAST_WORD \
-} }
+#define CPU_BITS_ALL \
+{ \
+ [0 ... BITS_TO_LONGS(CONFIG_NR_CPUS)-2] = ~0UL, \
+ [BITS_TO_LONGS(CONFIG_NR_CPUS)-1] = CPU_MASK_LAST_WORD \
+}

/* cpu_mask_all is in init/main.c */
extern cpumask_t cpu_mask_all;
@@ -421,15 +425,15 @@ extern cpumask_t cpu_mask_all;

#endif

-#define CPU_MASK_NONE \
-(cpumask_t) { { \
- [0 ... BITS_TO_LONGS(NR_CPUS)-1] = 0UL \
-} }
-
-#define CPU_MASK_CPU0 \
-(cpumask_t) { { \
- [0] = 1UL \
-} }
+#define CPU_BITS_NONE \
+{ \
+ [0 ... BITS_TO_LONGS(CONFIG_NR_CPUS)-1] = 0UL \
+}
+
+#define CPU_BITS_CPU0 \
+{ \
+ [0] = 1UL \
+}

#if NR_CPUS == 1

--


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