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-rw-r--r--arch/sh/mm/Kconfig4
-rw-r--r--arch/sh/mm/Makefile1
-rw-r--r--arch/sh/mm/sram.c34
3 files changed, 39 insertions, 0 deletions
diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig
index 1445ca6257d..09370392aff 100644
--- a/arch/sh/mm/Kconfig
+++ b/arch/sh/mm/Kconfig
@@ -168,6 +168,10 @@ config IOREMAP_FIXED
config UNCACHED_MAPPING
bool
+config HAVE_SRAM_POOL
+ bool
+ select GENERIC_ALLOCATOR
+
choice
prompt "Kernel page size"
default PAGE_SIZE_4KB
diff --git a/arch/sh/mm/Makefile b/arch/sh/mm/Makefile
index 939663c5591..ab89ea4f941 100644
--- a/arch/sh/mm/Makefile
+++ b/arch/sh/mm/Makefile
@@ -40,6 +40,7 @@ obj-$(CONFIG_PMB) += pmb.o
obj-$(CONFIG_NUMA) += numa.o
obj-$(CONFIG_IOREMAP_FIXED) += ioremap_fixed.o
obj-$(CONFIG_UNCACHED_MAPPING) += uncached.o
+obj-$(CONFIG_HAVE_SRAM_POOL) += sram.o
# Special flags for fault_64.o. This puts restrictions on the number of
# caller-save registers that the compiler can target when building this file.
diff --git a/arch/sh/mm/sram.c b/arch/sh/mm/sram.c
new file mode 100644
index 00000000000..bc156ec4545
--- /dev/null
+++ b/arch/sh/mm/sram.c
@@ -0,0 +1,34 @@
+/*
+ * 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 <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);