cpumask: new API, v2

- add cpumask_of() - add free_bootmem_cpumask_var() Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>

cpumask: new API, v2
- add cpumask_of() - add free_bootmem_cpumask_var() Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Rusty Russell · Ingo Molnar
1 parent 2d3854a37e
Showing 2 changed files with 16 additions and 0 deletions Side-by-side Diff
include/linux/cpumask.h
lib/cpumask.c
@@ -894,6 +894,12 @@
 #define cpumask_any_and(mask1, mask2) cpumask_first_and((mask1), (mask2))
  
 /**
+ * cpumask_of - the cpumask containing just a given cpu
+ * @cpu: the cpu (<= nr_cpu_ids)
+ */
+#define cpumask_of(cpu) (get_cpu_mask(cpu))
+
+/**
  * to_cpumask - convert an NR_CPUS bitmap to a struct cpumask *
  * @bitmap: the bitmap
  *
@@ -946,6 +952,7 @@
 bool alloc_cpumask_var(cpumask_var_t *mask, gfp_t flags);
 void alloc_bootmem_cpumask_var(cpumask_var_t *mask);
 void free_cpumask_var(cpumask_var_t mask);
+void free_bootmem_cpumask_var(cpumask_var_t mask);
  
 #else
 typedef struct cpumask cpumask_var_t[1];
@@ -960,6 +967,10 @@
 }
  
 static inline void free_cpumask_var(cpumask_var_t mask)
+{
+}
+
+static inline void free_bootmem_cpumask_var(cpumask_var_t mask)
 {
 }
 #endif /* CONFIG_CPUMASK_OFFSTACK */
@@ -107,5 +107,10 @@
 	kfree(mask);
 }
 EXPORT_SYMBOL(free_cpumask_var);
+
+void free_bootmem_cpumask_var(cpumask_var_t mask)
+{
+	free_bootmem((unsigned long)mask, cpumask_size());
+}
 #endif
...	...	@@ -894,6 +894,12 @@
894	894	#define cpumask_any_and(mask1, mask2) cpumask_first_and((mask1), (mask2))
895	895
896	896	/**
	897	+ * cpumask_of - the cpumask containing just a given cpu
	898	+ * @cpu: the cpu (<= nr_cpu_ids)
	899	+ */
	900	+#define cpumask_of(cpu) (get_cpu_mask(cpu))
	901	+
	902	+/**
897	903	* to_cpumask - convert an NR_CPUS bitmap to a struct cpumask *
898	904	* @bitmap: the bitmap
899	905	*
...	...	@@ -946,6 +952,7 @@
946	952	bool alloc_cpumask_var(cpumask_var_t *mask, gfp_t flags);
947	953	void alloc_bootmem_cpumask_var(cpumask_var_t *mask);
948	954	void free_cpumask_var(cpumask_var_t mask);
	955	+void free_bootmem_cpumask_var(cpumask_var_t mask);
949	956
950	957	#else
951	958	typedef struct cpumask cpumask_var_t[1];
...	...	@@ -960,6 +967,10 @@
960	967	}
961	968
962	969	static inline void free_cpumask_var(cpumask_var_t mask)
	970	+{
	971	+}
	972	+
	973	+static inline void free_bootmem_cpumask_var(cpumask_var_t mask)
963	974	{
964	975	}
965	976	#endif /* CONFIG_CPUMASK_OFFSTACK */
...	...	@@ -107,5 +107,10 @@
107	107	kfree(mask);
108	108	}
109	109	EXPORT_SYMBOL(free_cpumask_var);
	110	+
	111	+void free_bootmem_cpumask_var(cpumask_var_t mask)
	112	+{
	113	+ free_bootmem((unsigned long)mask, cpumask_size());
	114	+}
110	115	#endif