mm/slab_common: kmalloc_node: pass large requests to page allocator

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

One problem is that currently there is no tracepoint in
kmalloc_large_node(). Instead of simply putting tracepoint in it,
use kmalloc_large_node{,_notrace} depending on its caller to show
useful address for both inlined kmalloc_node() and
__kmalloc_node_track_caller() when large objects are allocated.

Signed-off-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>

1 files changed, 19 insertions, 7 deletions

diff --git a/include/linux/slab.h b/include/linux/slab.h
index 082499306098..fd2e129fc813 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -571,23 +571,35 @@ 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],
+				kmalloc_caches[kmalloc_type(flags)][index],
 						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.