Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / sh / mm / sram.c

diff --git a/kernel/arch/sh/mm/sram.c b/kernel/arch/sh/mm/sram.c
new file mode 100644 (file)
index 0000000..2d8fa71
--- /dev/null
+++ b/kernel/arch/sh/mm/sram.c
@@ -0,0 +1,35 @@
+/*
+ * SRAM pool for tiny memories not otherwise managed.
+ *
+ * Copyright (C) 2010  Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <asm/sram.h>
+
+/*
+ * This provides a standard SRAM pool for tiny memories that can be
+ * added either by the CPU or the platform code. Typical SRAM sizes
+ * to be inserted in to the pool will generally be less than the page
+ * size, with anything more reasonably sized handled as a NUMA memory
+ * node.
+ */
+struct gen_pool *sram_pool;
+
+static int __init sram_pool_init(void)
+{
+       /*
+        * This is a global pool, we don't care about node locality.
+        */
+       sram_pool = gen_pool_create(1, -1);
+       if (unlikely(!sram_pool))
+               return -ENOMEM;
+
+       return 0;
+}
+core_initcall(sram_pool_init);