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From: Vlastimil Babka <vbabka@suse.cz>
To: "Liam R. Howlett" <Liam.Howlett@oracle.com>,
	Matthew Wilcox <willy@infradead.org>,
	Suren Baghdasaryan <surenb@google.com>,
	Christoph Lameter <cl@linux.com>,
	David Rientjes <rientjes@google.com>,
	Pekka Enberg <penberg@kernel.org>,
	Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>,
	Roman Gushchin <roman.gushchin@linux.dev>,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	patches@lists.linux.dev, Vlastimil Babka <vbabka@suse.cz>
Subject: [RFC v2 7/7] tools: Add SLUB percpu array functions for testing
Date: Thu, 10 Aug 2023 18:36:35 +0200	[thread overview]
Message-ID: <20230810163627.6206-16-vbabka@suse.cz> (raw)
In-Reply-To: <20230810163627.6206-9-vbabka@suse.cz>

From: "Liam R. Howlett" <Liam.Howlett@oracle.com>

Support new percpu array functions to the test code so they can be used
in the maple tree testing.

Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
---
 tools/include/linux/slab.h              |  4 ++++
 tools/testing/radix-tree/linux.c        | 14 ++++++++++++++
 tools/testing/radix-tree/linux/kernel.h |  1 +
 3 files changed, 19 insertions(+)

diff --git a/tools/include/linux/slab.h b/tools/include/linux/slab.h
index 311759ea25e9..1043f9c5ef4e 100644
--- a/tools/include/linux/slab.h
+++ b/tools/include/linux/slab.h
@@ -7,6 +7,7 @@
 
 #define SLAB_PANIC 2
 #define SLAB_RECLAIM_ACCOUNT    0x00020000UL            /* Objects are reclaimable */
+#define SLAB_NO_MERGE		0x01000000UL		/* Prevent merging with compatible kmem caches */
 
 #define kzalloc_node(size, flags, node) kmalloc(size, flags)
 
@@ -45,4 +46,7 @@ void kmem_cache_free_bulk(struct kmem_cache *cachep, size_t size, void **list);
 int kmem_cache_alloc_bulk(struct kmem_cache *cachep, gfp_t gfp, size_t size,
 			  void **list);
 
+int kmem_cache_setup_percpu_array(struct kmem_cache *s, unsigned int count);
+int kmem_cache_prefill_percpu_array(struct kmem_cache *s, unsigned int count,
+		gfp_t gfp);
 #endif		/* _TOOLS_SLAB_H */
diff --git a/tools/testing/radix-tree/linux.c b/tools/testing/radix-tree/linux.c
index d587a558997f..cbe7937fdd5e 100644
--- a/tools/testing/radix-tree/linux.c
+++ b/tools/testing/radix-tree/linux.c
@@ -187,6 +187,20 @@ int kmem_cache_alloc_bulk(struct kmem_cache *cachep, gfp_t gfp, size_t size,
 	return size;
 }
 
+int kmem_cache_setup_percpu_array(struct kmem_cache *s, unsigned int count)
+{
+	return 0;
+}
+
+int kmem_cache_prefill_percpu_array(struct kmem_cache *s, unsigned int count,
+		gfp_t gfp)
+{
+	if (count > s->non_kernel)
+		return s->non_kernel;
+
+	return count;
+}
+
 struct kmem_cache *
 kmem_cache_create(const char *name, unsigned int size, unsigned int align,
 		unsigned int flags, void (*ctor)(void *))
diff --git a/tools/testing/radix-tree/linux/kernel.h b/tools/testing/radix-tree/linux/kernel.h
index c5c9d05f29da..fc75018974de 100644
--- a/tools/testing/radix-tree/linux/kernel.h
+++ b/tools/testing/radix-tree/linux/kernel.h
@@ -15,6 +15,7 @@
 
 #define printk printf
 #define pr_err printk
+#define pr_warn printk
 #define pr_info printk
 #define pr_debug printk
 #define pr_cont printk
-- 
2.41.0


  parent reply	other threads:[~2023-08-10 16:36 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-08-10 16:36 [RFC v2 0/7] SLUB percpu array caches and maple tree nodes Vlastimil Babka
2023-08-10 16:36 ` [RFC v2 1/7] mm, slub: fix bulk alloc and free stats Vlastimil Babka
2023-08-10 16:36 ` [RFC v2 2/7] mm, slub: add opt-in slub_percpu_array Vlastimil Babka
2023-08-21 14:57   ` Hyeonggon Yoo
2023-11-28 17:37     ` Vlastimil Babka
2023-11-29  0:46       ` Hyeonggon Yoo
2023-11-29 13:25         ` Vlastimil Babka
2023-08-10 16:36 ` [RFC v2 3/7] maple_tree: use slub percpu array Vlastimil Babka
2023-08-10 16:36 ` [RFC v2 4/7] maple_tree: avoid bulk alloc/free to use percpu array more Vlastimil Babka
2023-08-10 16:36 ` [RFC v2 5/7] maple_tree: Remove MA_STATE_PREALLOC Vlastimil Babka
2023-08-10 16:36 ` [RFC v2 6/7] maple_tree: replace preallocation with slub percpu array prefill Vlastimil Babka
2023-08-10 16:36 ` Vlastimil Babka [this message]
2023-08-18 16:44 ` [RFC v2 0/7] SLUB percpu array caches and maple tree nodes Suren Baghdasaryan

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