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-rw-r--r--include/linux/nodemask.h20
1 files changed, 20 insertions, 0 deletions
diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h
index e96fe9062500..4726ef7ba8e8 100644
--- a/include/linux/nodemask.h
+++ b/include/linux/nodemask.h
@@ -12,6 +12,8 @@
* see bitmap_scnprintf() and bitmap_parse() in lib/bitmap.c.
* For details of nodelist_scnprintf() and nodelist_parse(), see
* bitmap_scnlistprintf() and bitmap_parselist(), also in bitmap.c.
+ * For details of node_remap(), see bitmap_bitremap in lib/bitmap.c.
+ * For details of nodes_remap(), see bitmap_remap in lib/bitmap.c.
*
* The available nodemask operations are:
*
@@ -52,6 +54,8 @@
* int nodemask_parse(ubuf, ulen, mask) Parse ascii string as nodemask
* int nodelist_scnprintf(buf, len, mask) Format nodemask as list for printing
* int nodelist_parse(buf, map) Parse ascii string as nodelist
+ * int node_remap(oldbit, old, new) newbit = map(old, new)(oldbit)
+ * int nodes_remap(dst, src, old, new) *dst = map(old, new)(dst)
*
* for_each_node_mask(node, mask) for-loop node over mask
*
@@ -307,6 +311,22 @@ static inline int __nodelist_parse(const char *buf, nodemask_t *dstp, int nbits)
return bitmap_parselist(buf, dstp->bits, nbits);
}
+#define node_remap(oldbit, old, new) \
+ __node_remap((oldbit), &(old), &(new), MAX_NUMNODES)
+static inline int __node_remap(int oldbit,
+ const nodemask_t *oldp, const nodemask_t *newp, int nbits)
+{
+ return bitmap_bitremap(oldbit, oldp->bits, newp->bits, nbits);
+}
+
+#define nodes_remap(dst, src, old, new) \
+ __nodes_remap(&(dst), &(src), &(old), &(new), MAX_NUMNODES)
+static inline void __nodes_remap(nodemask_t *dstp, const nodemask_t *srcp,
+ const nodemask_t *oldp, const nodemask_t *newp, int nbits)
+{
+ bitmap_remap(dstp->bits, srcp->bits, oldp->bits, newp->bits, nbits);
+}
+
#if MAX_NUMNODES > 1
#define for_each_node_mask(node, mask) \
for ((node) = first_node(mask); \