aboutsummaryrefslogtreecommitdiff
path: root/include/linux/cpumask.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/cpumask.h')
-rw-r--r--include/linux/cpumask.h22
1 files changed, 21 insertions, 1 deletions
diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index 259c8051155..9650806fe2e 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -14,6 +14,8 @@
* bitmap_scnlistprintf() and bitmap_parselist(), also in bitmap.c.
* For details of cpu_remap(), see bitmap_bitremap in lib/bitmap.c
* For details of cpus_remap(), see bitmap_remap in lib/bitmap.c.
+ * For details of cpus_onto(), see bitmap_onto in lib/bitmap.c.
+ * For details of cpus_fold(), see bitmap_fold in lib/bitmap.c.
*
* The available cpumask operations are:
*
@@ -53,7 +55,9 @@
* int cpulist_scnprintf(buf, len, mask) Format cpumask as list for printing
* int cpulist_parse(buf, map) Parse ascii string as cpulist
* int cpu_remap(oldbit, old, new) newbit = map(old, new)(oldbit)
- * int cpus_remap(dst, src, old, new) *dst = map(old, new)(src)
+ * void cpus_remap(dst, src, old, new) *dst = map(old, new)(src)
+ * void cpus_onto(dst, orig, relmap) *dst = orig relative to relmap
+ * void cpus_fold(dst, orig, sz) dst bits = orig bits mod sz
*
* for_each_cpu_mask(cpu, mask) for-loop cpu over mask
*
@@ -330,6 +334,22 @@ static inline void __cpus_remap(cpumask_t *dstp, const cpumask_t *srcp,
bitmap_remap(dstp->bits, srcp->bits, oldp->bits, newp->bits, nbits);
}
+#define cpus_onto(dst, orig, relmap) \
+ __cpus_onto(&(dst), &(orig), &(relmap), NR_CPUS)
+static inline void __cpus_onto(cpumask_t *dstp, const cpumask_t *origp,
+ const cpumask_t *relmapp, int nbits)
+{
+ bitmap_onto(dstp->bits, origp->bits, relmapp->bits, nbits);
+}
+
+#define cpus_fold(dst, orig, sz) \
+ __cpus_fold(&(dst), &(orig), sz, NR_CPUS)
+static inline void __cpus_fold(cpumask_t *dstp, const cpumask_t *origp,
+ int sz, int nbits)
+{
+ bitmap_fold(dstp->bits, origp->bits, sz, nbits);
+}
+
#if NR_CPUS > 1
#define for_each_cpu_mask(cpu, mask) \
for ((cpu) = first_cpu(mask); \