diff options
Diffstat (limited to 'arch/powerpc/kernel/perf_callchain.c')
| -rw-r--r-- | arch/powerpc/kernel/perf_callchain.c | 24 |
1 files changed, 7 insertions, 17 deletions
diff --git a/arch/powerpc/kernel/perf_callchain.c b/arch/powerpc/kernel/perf_callchain.c index 0a03cf70d247..a3c11cac3d71 100644 --- a/arch/powerpc/kernel/perf_callchain.c +++ b/arch/powerpc/kernel/perf_callchain.c @@ -119,13 +119,6 @@ static void perf_callchain_kernel(struct pt_regs *regs, } #ifdef CONFIG_PPC64 - -#ifdef CONFIG_HUGETLB_PAGE -#define is_huge_psize(pagesize) (HPAGE_SHIFT && mmu_huge_psizes[pagesize]) -#else -#define is_huge_psize(pagesize) 0 -#endif - /* * On 64-bit we don't want to invoke hash_page on user addresses from * interrupt context, so if the access faults, we read the page tables @@ -135,7 +128,7 @@ static int read_user_stack_slow(void __user *ptr, void *ret, int nb) { pgd_t *pgdir; pte_t *ptep, pte; - int pagesize; + unsigned shift; unsigned long addr = (unsigned long) ptr; unsigned long offset; unsigned long pfn; @@ -145,17 +138,14 @@ static int read_user_stack_slow(void __user *ptr, void *ret, int nb) if (!pgdir) return -EFAULT; - pagesize = get_slice_psize(current->mm, addr); + ptep = find_linux_pte_or_hugepte(pgdir, addr, &shift); + if (!shift) + shift = PAGE_SHIFT; /* align address to page boundary */ - offset = addr & ((1ul << mmu_psize_defs[pagesize].shift) - 1); + offset = addr & ((1UL << shift) - 1); addr -= offset; - if (is_huge_psize(pagesize)) - ptep = huge_pte_offset(current->mm, addr); - else - ptep = find_linux_pte(pgdir, addr); - if (ptep == NULL) return -EFAULT; pte = *ptep; @@ -497,11 +487,11 @@ static void perf_callchain_user_32(struct pt_regs *regs, * Since we can't get PMU interrupts inside a PMU interrupt handler, * we don't need separate irq and nmi entries here. */ -static DEFINE_PER_CPU(struct perf_callchain_entry, callchain); +static DEFINE_PER_CPU(struct perf_callchain_entry, cpu_perf_callchain); struct perf_callchain_entry *perf_callchain(struct pt_regs *regs) { - struct perf_callchain_entry *entry = &__get_cpu_var(callchain); + struct perf_callchain_entry *entry = &__get_cpu_var(cpu_perf_callchain); entry->nr = 0; |