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From:   Liam Howlett <liam.howlett@oracle.com>
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        Liam Howlett <liam.howlett@oracle.com>
Subject: [PATCH 24/94] radix tree test suite: Add keme_cache_alloc_bulk()
 support
Thread-Topic: [PATCH 24/94] radix tree test suite: Add keme_cache_alloc_bulk()
 support
Thread-Index: AQHXPEQuvP7qWSQZGk6zUNYAinMQpA==
Date:   Wed, 28 Apr 2021 15:35:56 +0000
Message-ID: <20210428153542.2814175-25-Liam.Howlett@Oracle.com>
References: <20210428153542.2814175-1-Liam.Howlett@Oracle.com>
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Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
---
 tools/testing/radix-tree/linux.c      | 51 +++++++++++++++++++++++++++
 tools/testing/radix-tree/linux/slab.h |  1 +
 2 files changed, 52 insertions(+)

diff --git a/tools/testing/radix-tree/linux.c b/tools/testing/radix-tree/li=
nux.c
index 380bbc0a48d6..fb19a40ebb46 100644
--- a/tools/testing/radix-tree/linux.c
+++ b/tools/testing/radix-tree/linux.c
@@ -99,6 +99,57 @@ void kmem_cache_free_bulk(struct kmem_cache *cachep, siz=
e_t size, void **list)
 	for (int i =3D 0; i < size; i++)
 		kmem_cache_free(cachep, list[i]);
 }
+int kmem_cache_alloc_bulk(struct kmem_cache *cachep, gfp_t gfp, size_t siz=
e,
+			  void **p)
+{
+	size_t i;
+
+	if (kmalloc_verbose)
+		printk("Bulk alloc %lu\n", size);
+
+	if (!(gfp & __GFP_DIRECT_RECLAIM) && cachep->non_kernel < size)
+		return 0;
+
+	if (!(gfp & __GFP_DIRECT_RECLAIM))
+		cachep->non_kernel -=3D size;
+
+	pthread_mutex_lock(&cachep->lock);
+	if (cachep->nr_objs >=3D size) {
+		struct radix_tree_node *node =3D cachep->objs;
+
+		for (i =3D 0; i < size; i++) {
+			cachep->nr_objs--;
+			cachep->objs =3D node->parent;
+			p[i] =3D cachep->objs;
+		}
+		pthread_mutex_unlock(&cachep->lock);
+		node->parent =3D NULL;
+	} else {
+		pthread_mutex_unlock(&cachep->lock);
+		for (i =3D 0; i < size; i++) {
+			if (cachep->align) {
+				posix_memalign(&p[i], cachep->align,
+					       cachep->size * size);
+			} else {
+				p[i] =3D malloc(cachep->size * size);
+			}
+			if (cachep->ctor)
+				cachep->ctor(p[i]);
+			else if (gfp & __GFP_ZERO)
+				memset(p[i], 0, cachep->size);
+		}
+	}
+
+	for (i =3D 0; i < size; i++) {
+		uatomic_inc(&nr_allocated);
+		uatomic_inc(&nr_tallocated);
+		if (kmalloc_verbose)
+			printf("Allocating %p from slab\n", p[i]);
+	}
+
+	return size;
+}
+
=20
 void *kmalloc(size_t size, gfp_t gfp)
 {
diff --git a/tools/testing/radix-tree/linux/slab.h b/tools/testing/radix-tr=
ee/linux/slab.h
index 53b79c15b3a2..ba42b8cc11d0 100644
--- a/tools/testing/radix-tree/linux/slab.h
+++ b/tools/testing/radix-tree/linux/slab.h
@@ -25,4 +25,5 @@ struct kmem_cache *kmem_cache_create(const char *name, un=
signed int size,
 			void (*ctor)(void *));
=20
 void kmem_cache_free_bulk(struct kmem_cache *cachep, size_t, void **);
+int kmem_cache_alloc_bulk(struct kmem_cache *cachep, gfp_t, size_t, void *=
*);
 #endif		/* SLAB_H */
--=20
2.30.2