xiaomi-sm8450/android_kernel_xiaomi_sm8450
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Merge branch 'master' into export-slabh

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This commit is contained in:
Tejun Heo
2010-04-05 11:37:28 +09:00
parent a4ab277320 db217dece3
commit 336f5899d2
183 changed files with 4625 additions and 2682 deletions
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32
arch/x86/mm/init.c
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@@ -332,11 +332,23 @@ int devmem_is_allowed(unsigned long pagenr)
void free_init_pages(char *what, unsigned long begin, unsigned long end)
{
unsigned long addr = begin;
unsigned long addr;
unsigned long begin_aligned, end_aligned;
if (addr >= end)
/* Make sure boundaries are page aligned */
begin_aligned = PAGE_ALIGN(begin);
end_aligned = end & PAGE_MASK;
if (WARN_ON(begin_aligned != begin || end_aligned != end)) {
begin = begin_aligned;
end = end_aligned;
}
if (begin >= end)
return;
addr = begin;
/*
* If debugging page accesses then do not free this memory but
* mark them not present - any buggy init-section access will
@@ -344,7 +356,7 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end)
*/
#ifdef CONFIG_DEBUG_PAGEALLOC
printk(KERN_INFO "debug: unmapping init memory %08lx..%08lx\n",
begin, PAGE_ALIGN(end));
begin, end);
set_memory_np(begin, (end - begin) >> PAGE_SHIFT);
#else
/*
@@ -359,8 +371,7 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end)
for (; addr < end; addr += PAGE_SIZE) {
ClearPageReserved(virt_to_page(addr));
init_page_count(virt_to_page(addr));
memset((void *)(addr & ~(PAGE_SIZE-1)),
POISON_FREE_INITMEM, PAGE_SIZE);
memset((void *)addr, POISON_FREE_INITMEM, PAGE_SIZE);
free_page(addr);
totalram_pages++;
}
@@ -377,6 +388,15 @@ void free_initmem(void)
#ifdef CONFIG_BLK_DEV_INITRD
void free_initrd_mem(unsigned long start, unsigned long end)
{
free_init_pages("initrd memory", start, end);
/*
* end could be not aligned, and We can not align that,
* decompresser could be confused by aligned initrd_end
* We already reserve the end partial page before in
* - i386_start_kernel()
* - x86_64_start_kernel()
* - relocate_initrd()
* So here We can do PAGE_ALIGN() safely to get partial page to be freed
*/
free_init_pages("initrd memory", start, PAGE_ALIGN(end));
}
#endif