diff options
| -rw-r--r-- | arch/i386/Kconfig | 8 | ||||
| -rw-r--r-- | arch/i386/kernel/process.c | 1 | ||||
| -rw-r--r-- | arch/i386/kernel/smp.c | 2 | ||||
| -rw-r--r-- | arch/i386/mm/init.c | 7 | ||||
| -rw-r--r-- | arch/i386/mm/pgtable.c | 26 | ||||
| -rw-r--r-- | include/asm-i386/pgalloc.h | 2 | ||||
| -rw-r--r-- | include/asm-i386/pgtable.h | 5 |
7 files changed, 25 insertions, 26 deletions
diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig index 30944ee2e61..c2d54b80223 100644 --- a/arch/i386/Kconfig +++ b/arch/i386/Kconfig @@ -55,6 +55,10 @@ config ZONE_DMA bool default y +config QUICKLIST + bool + default y + config SBUS bool @@ -79,10 +83,6 @@ config ARCH_MAY_HAVE_PC_FDC bool default y -config ARCH_USES_SLAB_PAGE_STRUCT - bool - default y - config DMI bool default y diff --git a/arch/i386/kernel/process.c b/arch/i386/kernel/process.c index d76d9bc33b3..06dfa65ad18 100644 --- a/arch/i386/kernel/process.c +++ b/arch/i386/kernel/process.c @@ -186,6 +186,7 @@ void cpu_idle(void) if (__get_cpu_var(cpu_idle_state)) __get_cpu_var(cpu_idle_state) = 0; + check_pgt_cache(); rmb(); idle = pm_idle; diff --git a/arch/i386/kernel/smp.c b/arch/i386/kernel/smp.c index 93f202a855f..706bda72dc6 100644 --- a/arch/i386/kernel/smp.c +++ b/arch/i386/kernel/smp.c @@ -421,7 +421,7 @@ void flush_tlb_mm (struct mm_struct * mm) } if (!cpus_empty(cpu_mask)) flush_tlb_others(cpu_mask, mm, TLB_FLUSH_ALL); - + check_pgt_cache(); preempt_enable(); } diff --git a/arch/i386/mm/init.c b/arch/i386/mm/init.c index c50782efa5c..b22ce8d6b1b 100644 --- a/arch/i386/mm/init.c +++ b/arch/i386/mm/init.c @@ -740,7 +740,6 @@ int remove_memory(u64 start, u64 size) EXPORT_SYMBOL_GPL(remove_memory); #endif -struct kmem_cache *pgd_cache; struct kmem_cache *pmd_cache; void __init pgtable_cache_init(void) @@ -764,12 +763,6 @@ void __init pgtable_cache_init(void) pgd_size = PAGE_SIZE; } } - pgd_cache = kmem_cache_create("pgd", - pgd_size, - pgd_size, - SLAB_PANIC, - pgd_ctor, - (!SHARED_KERNEL_PMD) ? pgd_dtor : NULL); } /* diff --git a/arch/i386/mm/pgtable.c b/arch/i386/mm/pgtable.c index 9a96c164742..8d7c0864cc0 100644 --- a/arch/i386/mm/pgtable.c +++ b/arch/i386/mm/pgtable.c @@ -13,6 +13,7 @@ #include <linux/pagemap.h> #include <linux/spinlock.h> #include <linux/module.h> +#include <linux/quicklist.h> #include <asm/system.h> #include <asm/pgtable.h> @@ -205,8 +206,6 @@ void pmd_ctor(void *pmd, struct kmem_cache *cache, unsigned long flags) * against pageattr.c; it is the unique case in which a valid change * of kernel pagetables can't be lazily synchronized by vmalloc faults. * vmalloc faults work because attached pagetables are never freed. - * The locking scheme was chosen on the basis of manfred's - * recommendations and having no core impact whatsoever. * -- wli */ DEFINE_SPINLOCK(pgd_lock); @@ -232,9 +231,11 @@ static inline void pgd_list_del(pgd_t *pgd) set_page_private(next, (unsigned long)pprev); } + + #if (PTRS_PER_PMD == 1) /* Non-PAE pgd constructor */ -void pgd_ctor(void *pgd, struct kmem_cache *cache, unsigned long unused) +void pgd_ctor(void *pgd) { unsigned long flags; @@ -256,7 +257,7 @@ void pgd_ctor(void *pgd, struct kmem_cache *cache, unsigned long unused) } #else /* PTRS_PER_PMD > 1 */ /* PAE pgd constructor */ -void pgd_ctor(void *pgd, struct kmem_cache *cache, unsigned long unused) +void pgd_ctor(void *pgd) { /* PAE, kernel PMD may be shared */ @@ -275,11 +276,12 @@ void pgd_ctor(void *pgd, struct kmem_cache *cache, unsigned long unused) } #endif /* PTRS_PER_PMD */ -void pgd_dtor(void *pgd, struct kmem_cache *cache, unsigned long unused) +void pgd_dtor(void *pgd) { unsigned long flags; /* can be called from interrupt context */ - BUG_ON(SHARED_KERNEL_PMD); + if (SHARED_KERNEL_PMD) + return; paravirt_release_pd(__pa(pgd) >> PAGE_SHIFT); spin_lock_irqsave(&pgd_lock, flags); @@ -321,7 +323,7 @@ static void pmd_cache_free(pmd_t *pmd, int idx) pgd_t *pgd_alloc(struct mm_struct *mm) { int i; - pgd_t *pgd = kmem_cache_alloc(pgd_cache, GFP_KERNEL); + pgd_t *pgd = quicklist_alloc(0, GFP_KERNEL, pgd_ctor); if (PTRS_PER_PMD == 1 || !pgd) return pgd; @@ -344,7 +346,7 @@ out_oom: paravirt_release_pd(__pa(pmd) >> PAGE_SHIFT); pmd_cache_free(pmd, i); } - kmem_cache_free(pgd_cache, pgd); + quicklist_free(0, pgd_dtor, pgd); return NULL; } @@ -361,5 +363,11 @@ void pgd_free(pgd_t *pgd) pmd_cache_free(pmd, i); } /* in the non-PAE case, free_pgtables() clears user pgd entries */ - kmem_cache_free(pgd_cache, pgd); + quicklist_free(0, pgd_dtor, pgd); } + +void check_pgt_cache(void) +{ + quicklist_trim(0, pgd_dtor, 25, 16); +} + diff --git a/include/asm-i386/pgalloc.h b/include/asm-i386/pgalloc.h index 47430175b75..d07b7afc269 100644 --- a/include/asm-i386/pgalloc.h +++ b/include/asm-i386/pgalloc.h @@ -65,6 +65,4 @@ do { \ #define pud_populate(mm, pmd, pte) BUG() #endif -#define check_pgt_cache() do { } while (0) - #endif /* _I386_PGALLOC_H */ diff --git a/include/asm-i386/pgtable.h b/include/asm-i386/pgtable.h index edce9d51a67..2394589786b 100644 --- a/include/asm-i386/pgtable.h +++ b/include/asm-i386/pgtable.h @@ -35,17 +35,16 @@ struct vm_area_struct; #define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page)) extern unsigned long empty_zero_page[1024]; extern pgd_t swapper_pg_dir[1024]; -extern struct kmem_cache *pgd_cache; extern struct kmem_cache *pmd_cache; extern spinlock_t pgd_lock; extern struct page *pgd_list; +void check_pgt_cache(void); void pmd_ctor(void *, struct kmem_cache *, unsigned long); -void pgd_ctor(void *, struct kmem_cache *, unsigned long); -void pgd_dtor(void *, struct kmem_cache *, unsigned long); void pgtable_cache_init(void); void paging_init(void); + /* * The Linux x86 paging architecture is 'compile-time dual-mode', it * implements both the traditional 2-level x86 page tables and the |