diff options
author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
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committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/cris/mm/init.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/cris/mm/init.c')
-rw-r--r-- | kernel/arch/cris/mm/init.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/kernel/arch/cris/mm/init.c b/kernel/arch/cris/mm/init.c new file mode 100644 index 000000000..1e7fd45b6 --- /dev/null +++ b/kernel/arch/cris/mm/init.c @@ -0,0 +1,68 @@ +/* + * linux/arch/cris/mm/init.c + * + * Copyright (C) 1995 Linus Torvalds + * Copyright (C) 2000,2001 Axis Communications AB + * + * Authors: Bjorn Wesen (bjornw@axis.com) + * + */ + +#include <linux/gfp.h> +#include <linux/init.h> +#include <linux/bootmem.h> +#include <linux/proc_fs.h> +#include <linux/kcore.h> +#include <asm/tlb.h> +#include <asm/sections.h> + +unsigned long empty_zero_page; +EXPORT_SYMBOL(empty_zero_page); + +void __init mem_init(void) +{ + BUG_ON(!mem_map); + + /* max/min_low_pfn was set by setup.c + * now we just copy it to some other necessary places... + * + * high_memory was also set in setup.c + */ + max_mapnr = max_low_pfn - min_low_pfn; + free_all_bootmem(); + mem_init_print_info(NULL); +} + +/* Free a range of init pages. Virtual addresses. */ + +void free_init_pages(const char *what, unsigned long begin, unsigned long end) +{ + unsigned long addr; + + for (addr = begin; addr < end; addr += PAGE_SIZE) { + ClearPageReserved(virt_to_page(addr)); + init_page_count(virt_to_page(addr)); + free_page(addr); + totalram_pages++; + } + + printk(KERN_INFO "Freeing %s: %ldk freed\n", what, (end - begin) >> 10); +} + +/* Free the pages occupied by initialization code. */ + +void free_initmem(void) +{ + free_initmem_default(-1); +} + +/* Free the pages occupied by initrd code. */ + +#ifdef CONFIG_BLK_DEV_INITRD +void free_initrd_mem(unsigned long start, unsigned long end) +{ + free_init_pages("initrd memory", + start, + end); +} +#endif |