From 7529cc7fbd9c02eda6851f3260416cbe198a321d Mon Sep 17 00:00:00 2001
From: Tariq Toukan <tariqt@nvidia.com>
Date: Wed, 30 Dec 2020 11:41:52 +0200
Subject: [PATCH] lib: bitmap: Introduce node-aware alloc API
Expose new node-aware API for bitmap allocation:
bitmap_alloc_node() / bitmap_zalloc_node().
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
include/linux/bitmap.h | 2 ++
lib/bitmap.c | 13 +++++++++++++
2 files changed, 15 insertions(+)
diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h
index 37f36dad18bd..a241dcf50f39 100644
--- a/include/linux/bitmap.h
+++ b/include/linux/bitmap.h
@@ -123,6 +123,8 @@ struct device;
*/
unsigned long *bitmap_alloc(unsigned int nbits, gfp_t flags);
unsigned long *bitmap_zalloc(unsigned int nbits, gfp_t flags);
+unsigned long *bitmap_alloc_node(unsigned int nbits, gfp_t flags, int node);
+unsigned long *bitmap_zalloc_node(unsigned int nbits, gfp_t flags, int node);
void bitmap_free(const unsigned long *bitmap);
/* Managed variants of the above. */
diff --git a/lib/bitmap.c b/lib/bitmap.c
index 663dd81967d4..926408883456 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -1398,6 +1398,19 @@ unsigned long *bitmap_zalloc(unsigned int nbits, gfp_t flags)
}
EXPORT_SYMBOL(bitmap_zalloc);
+unsigned long *bitmap_alloc_node(unsigned int nbits, gfp_t flags, int node)
+{
+ return kmalloc_array_node(BITS_TO_LONGS(nbits), sizeof(unsigned long),
+ flags, node);
+}
+EXPORT_SYMBOL(bitmap_alloc_node);
+
+unsigned long *bitmap_zalloc_node(unsigned int nbits, gfp_t flags, int node)
+{
+ return bitmap_alloc_node(nbits, flags | __GFP_ZERO, node);
+}
+EXPORT_SYMBOL(bitmap_zalloc_node);
+
void bitmap_free(const unsigned long *bitmap)
{
kfree(bitmap);