summaryrefslogtreecommitdiff
path: root/include/linux/cpumask.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/cpumask.h')
-rw-r--r--include/linux/cpumask.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index b3d2c1a89ac4..96f1e88b767c 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -649,11 +649,15 @@ static inline size_t cpumask_size(void)
* used. Please use this_cpu_cpumask_var_t in those cases. The direct use
* of this_cpu_ptr() or this_cpu_read() will lead to failures when the
* other type of cpumask_var_t implementation is configured.
+ *
+ * Please also note that __cpumask_var_read_mostly can be used to declare
+ * a cpumask_var_t variable itself (not its content) as read mostly.
*/
#ifdef CONFIG_CPUMASK_OFFSTACK
typedef struct cpumask *cpumask_var_t;
-#define this_cpu_cpumask_var_ptr(x) this_cpu_read(x)
+#define this_cpu_cpumask_var_ptr(x) this_cpu_read(x)
+#define __cpumask_var_read_mostly __read_mostly
bool alloc_cpumask_var_node(cpumask_var_t *mask, gfp_t flags, int node);
bool alloc_cpumask_var(cpumask_var_t *mask, gfp_t flags);
@@ -667,6 +671,7 @@ void free_bootmem_cpumask_var(cpumask_var_t mask);
typedef struct cpumask cpumask_var_t[1];
#define this_cpu_cpumask_var_ptr(x) this_cpu_ptr(x)
+#define __cpumask_var_read_mostly
static inline bool alloc_cpumask_var(cpumask_var_t *mask, gfp_t flags)
{