arch/sh/mm/sram.c

   1 /*
   2  * SRAM pool for tiny memories not otherwise managed.
   3  *
   4  * Copyright (C) 2010  Paul Mundt
   5  *
   6  * This file is subject to the terms and conditions of the GNU General Public
   7  * License.  See the file "COPYING" in the main directory of this archive
   8  * for more details.
   9  */
  10 #include <linux/init.h>
  11 #include <linux/kernel.h>
  12 #include <linux/errno.h>
  13 #include <asm/sram.h>
  14
  15 /*
  16  * This provides a standard SRAM pool for tiny memories that can be
  17  * added either by the CPU or the platform code. Typical SRAM sizes
  18  * to be inserted in to the pool will generally be less than the page
  19  * size, with anything more reasonably sized handled as a NUMA memory
  20  * node.
  21  */
  22 struct gen_pool *sram_pool;
  23
  24 static int __init sram_pool_init(void)
  25 {
  26         /*
  27          * This is a global pool, we don't care about node locality.
  28          */
  29         sram_pool = gen_pool_create(1, -1);
  30         if (unlikely(!sram_pool))
  31                 return -ENOMEM;
  32
  33         return 0;
  34 }
  35 core_initcall(sram_pool_init);