diff options
| author | Joonsoo Kim <iamjoonsoo.kim@lge.com> | 2014-12-12 16:55:52 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-12-13 12:42:48 -0800 |
| commit | 031bc5743f158b2d5498294f489e534a31251626 (patch) | |
| tree | 472c0024f26821a627ec17a2e73a450f450ca4cc /arch | |
| parent | e30825f1869a75b29a69dc8e0aaaaccc492092cf (diff) | |
mm/debug-pagealloc: make debug-pagealloc boottime configurable
Now, we have prepared to avoid using debug-pagealloc in boottime. So
introduce new kernel-parameter to disable debug-pagealloc in boottime, and
makes related functions to be disabled in this case.
Only non-intuitive part is change of guard page functions. Because guard
page is effective only if debug-pagealloc is enabled, turning off
according to debug-pagealloc is reasonable thing to do.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Dave Hansen <dave@sr71.net>
Cc: Michal Nazarewicz <mina86@mina86.com>
Cc: Jungsoo Son <jungsoo.son@lge.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/mm/hash_utils_64.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/mm/pgtable_32.c | 2 | ||||
| -rw-r--r-- | arch/s390/mm/pageattr.c | 2 | ||||
| -rw-r--r-- | arch/sparc/mm/init_64.c | 2 | ||||
| -rw-r--r-- | arch/x86/mm/pageattr.c | 2 |
5 files changed, 5 insertions, 5 deletions
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c index e56a307bc676..2c2022d16059 100644 --- a/arch/powerpc/mm/hash_utils_64.c +++ b/arch/powerpc/mm/hash_utils_64.c @@ -1514,7 +1514,7 @@ static void kernel_unmap_linear_page(unsigned long vaddr, unsigned long lmi) mmu_kernel_ssize, 0); } -void kernel_map_pages(struct page *page, int numpages, int enable) +void __kernel_map_pages(struct page *page, int numpages, int enable) { unsigned long flags, vaddr, lmi; int i; diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c index d545b1231594..50fad3801f30 100644 --- a/arch/powerpc/mm/pgtable_32.c +++ b/arch/powerpc/mm/pgtable_32.c @@ -429,7 +429,7 @@ static int change_page_attr(struct page *page, int numpages, pgprot_t prot) } -void kernel_map_pages(struct page *page, int numpages, int enable) +void __kernel_map_pages(struct page *page, int numpages, int enable) { if (PageHighMem(page)) return; diff --git a/arch/s390/mm/pageattr.c b/arch/s390/mm/pageattr.c index 3fef3b299665..426c9d462d1c 100644 --- a/arch/s390/mm/pageattr.c +++ b/arch/s390/mm/pageattr.c @@ -120,7 +120,7 @@ static void ipte_range(pte_t *pte, unsigned long address, int nr) } } -void kernel_map_pages(struct page *page, int numpages, int enable) +void __kernel_map_pages(struct page *page, int numpages, int enable) { unsigned long address; int nr, i, j; diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c index 2d91c62f7f5f..3ea267c53320 100644 --- a/arch/sparc/mm/init_64.c +++ b/arch/sparc/mm/init_64.c @@ -1621,7 +1621,7 @@ static void __init kernel_physical_mapping_init(void) } #ifdef CONFIG_DEBUG_PAGEALLOC -void kernel_map_pages(struct page *page, int numpages, int enable) +void __kernel_map_pages(struct page *page, int numpages, int enable) { unsigned long phys_start = page_to_pfn(page) << PAGE_SHIFT; unsigned long phys_end = phys_start + (numpages * PAGE_SIZE); diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c index a3a5d46605d2..dfaf2e0f5f8f 100644 --- a/arch/x86/mm/pageattr.c +++ b/arch/x86/mm/pageattr.c @@ -1817,7 +1817,7 @@ static int __set_pages_np(struct page *page, int numpages) return __change_page_attr_set_clr(&cpa, 0); } -void kernel_map_pages(struct page *page, int numpages, int enable) +void __kernel_map_pages(struct page *page, int numpages, int enable) { if (PageHighMem(page)) return; |