Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Hyeonggon Yoo <42.hyeyoo@gmail.com>
To:     linux-mm@kvack.org
Cc:     Christoph Lameter <cl@linux.com>,
        Pekka Enberg <penberg@kernel.org>,
        David Rientjes <rientjes@google.com>,
        Joonsoo Kim <iamjoonsoo.kim@lge.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Vlastimil Babka <vbabka@suse.cz>,
        Marco Elver <elver@google.com>,
        Matthew WilCox <willy@infradead.org>,
        Roman Gushchin <roman.gushchin@linux.dev>,
        linux-kernel@vger.kernel.org, 42.hyeyoo@gmail.com
Subject: [RFC PATCH v1 07/15] mm/sl[au]b: kmalloc_node: pass large requests to page allocator
Date:   Tue,  8 Mar 2022 11:41:34 +0000
Message-Id: <20220308114142.1744229-8-42.hyeyoo@gmail.com>
In-Reply-To: <20220308114142.1744229-1-42.hyeyoo@gmail.com>
References: <20220308114142.1744229-1-42.hyeyoo@gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Now that kmalloc_large_node() is in common code, pass large requests
to page allocator in kmalloc_node() using kmalloc_large_node().

Signed-off-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
---
 include/linux/slab.h | 24 ++++++++++++++++++------
 1 file changed, 18 insertions(+), 6 deletions(-)

diff --git a/include/linux/slab.h b/include/linux/slab.h
index 8840b2d55567..33d4260bce8b 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -551,23 +551,35 @@ static __always_inline __alloc_size(1) void *kmalloc(size_t size, gfp_t flags)
 	return __kmalloc(size, flags);
 }
 
+#ifndef CONFIG_SLOB
 static __always_inline __alloc_size(1) void *kmalloc_node(size_t size, gfp_t flags, int node)
 {
-#ifndef CONFIG_SLOB
-	if (__builtin_constant_p(size) &&
-		size <= KMALLOC_MAX_CACHE_SIZE) {
-		unsigned int i = kmalloc_index(size);
+	if (__builtin_constant_p(size)) {
+		unsigned int index;
 
-		if (!i)
+		if (size > KMALLOC_MAX_CACHE_SIZE)
+			return kmalloc_large_node(size, flags, node);
+
+		index = kmalloc_index(size);
+
+		if (!index)
 			return ZERO_SIZE_PTR;
 
 		return kmem_cache_alloc_node_trace(
 				kmalloc_caches[kmalloc_type(flags)][i],
 						flags, node, size);
 	}
-#endif
 	return __kmalloc_node(size, flags, node);
 }
+#else
+static __always_inline __alloc_size(1) void *kmalloc_node(size_t size, gfp_t flags, int node)
+{
+	if (__builtin_constant_p(size) && size > KMALLOC_MAX_CACHE_SIZE)
+		return kmalloc_large_node(size, flags, node);
+
+	return __kmalloc_node(size, flags, node);
+}
+#endif
 
 /**
  * kmalloc_array - allocate memory for an array.
-- 
2.33.1