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| author |   Ingo Molnar <mingo@elte.hu> | 2010-03-09 17:11:53 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-03-09 17:11:53 +0100 |
| commit | 548b84166917d6f5e2296123b85ad24aecd3801d (patch) | |
| tree | 0ab0300e23a02df0fe3c0579627e4998bb122c00 /arch/x86/mm/pgtable.c | |
| parent | MAINTAINERS: Add Arnaldo as tools/perf/ co-maintainer (diff) | |
| parent | Linux 2.6.34-rc1 (diff) | |
| download | linux-dev-548b84166917d6f5e2296123b85ad24aecd3801d.tar.xz linux-dev-548b84166917d6f5e2296123b85ad24aecd3801d.zip | |
Merge commit 'v2.6.34-rc1' into perf/urgent
Conflicts:
tools/perf/util/probe-event.c
Merge reason: Pick up -rc1 and resolve the conflict as well.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/mm/pgtable.c')
| -rw-r--r-- | arch/x86/mm/pgtable.c | 31 |
1 files changed, 26 insertions, 5 deletions
diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c index ed34f5e35999..c9ba9deafe83 100644 --- a/arch/x86/mm/pgtable.c +++ b/arch/x86/mm/pgtable.c @@ -6,6 +6,14 @@ #define PGALLOC_GFP GFP_KERNEL | __GFP_NOTRACK | __GFP_REPEAT | __GFP_ZERO +#ifdef CONFIG_HIGHPTE +#define PGALLOC_USER_GFP __GFP_HIGHMEM +#else +#define PGALLOC_USER_GFP 0 +#endif + +gfp_t __userpte_alloc_gfp = PGALLOC_GFP | PGALLOC_USER_GFP; + pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address) { return (pte_t *)__get_free_page(PGALLOC_GFP); @@ -15,16 +23,29 @@ pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address) { struct page *pte; -#ifdef CONFIG_HIGHPTE - pte = alloc_pages(PGALLOC_GFP | __GFP_HIGHMEM, 0); -#else - pte = alloc_pages(PGALLOC_GFP, 0); -#endif + pte = alloc_pages(__userpte_alloc_gfp, 0); if (pte) pgtable_page_ctor(pte); return pte; } +static int __init setup_userpte(char *arg) +{ + if (!arg) + return -EINVAL; + + /* + * "userpte=nohigh" disables allocation of user pagetables in + * high memory. + */ + if (strcmp(arg, "nohigh") == 0) + __userpte_alloc_gfp &= ~__GFP_HIGHMEM; + else + return -EINVAL; + return 0; +} +early_param("userpte", setup_userpte); + void ___pte_free_tlb(struct mmu_gather *tlb, struct page *pte) { pgtable_page_dtor(pte); |