diff options
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/include/asm/pgtable.h | 1 | ||||
| -rw-r--r-- | arch/mips/mm/tlb-r4k.c | 21 |
2 files changed, 12 insertions, 10 deletions
diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h index e07a105cafc2..a6b611f1da43 100644 --- a/arch/mips/include/asm/pgtable.h +++ b/arch/mips/include/asm/pgtable.h @@ -533,6 +533,7 @@ static inline int io_remap_pfn_range(struct vm_area_struct *vma, #ifdef CONFIG_TRANSPARENT_HUGEPAGE +#define has_transparent_hugepage has_transparent_hugepage extern int has_transparent_hugepage(void); static inline int pmd_trans_huge(pmd_t pmd) diff --git a/arch/mips/mm/tlb-r4k.c b/arch/mips/mm/tlb-r4k.c index 5a5c7fec645e..e8b335c16295 100644 --- a/arch/mips/mm/tlb-r4k.c +++ b/arch/mips/mm/tlb-r4k.c @@ -405,19 +405,20 @@ void add_wired_entry(unsigned long entrylo0, unsigned long entrylo1, #ifdef CONFIG_TRANSPARENT_HUGEPAGE -int __init has_transparent_hugepage(void) +int has_transparent_hugepage(void) { - unsigned int mask; - unsigned long flags; - - local_irq_save(flags); - write_c0_pagemask(PM_HUGE_MASK); - back_to_back_c0_hazard(); - mask = read_c0_pagemask(); - write_c0_pagemask(PM_DEFAULT_MASK); + static unsigned int mask = -1; - local_irq_restore(flags); + if (mask == -1) { /* first call comes during __init */ + unsigned long flags; + local_irq_save(flags); + write_c0_pagemask(PM_HUGE_MASK); + back_to_back_c0_hazard(); + mask = read_c0_pagemask(); + write_c0_pagemask(PM_DEFAULT_MASK); + local_irq_restore(flags); + } return mask == PM_HUGE_MASK; } |
