lkml.org 
[lkml]   [2022]   [Mar]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[RFC PATCH v1 07/15] mm/sl[au]b: kmalloc_node: pass large requests to page allocator
Date
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
\
 
 \ /
  Last update: 2022-03-08 12:45    [W:0.222 / U:1.908 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site