[PATCH v4 10/11] powerpc/book3s_64: Enables counting method to monitor lockless pgtbl walk
From: Leonardo Bras <hidden>
Date: 2019-09-27 23:41:45
Also in:
linux-arch, linux-mm, lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
Enables count-based monitoring method for lockless pagetable walks on PowerPC book3s_64. Other architectures/platforms fallback to using generic dummy functions. Signed-off-by: Leonardo Bras <redacted> --- arch/powerpc/include/asm/book3s/64/pgtable.h | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h
index 8308f32e9782..eb9b26a4a483 100644
--- a/arch/powerpc/include/asm/book3s/64/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/64/pgtable.h@@ -1370,5 +1370,10 @@ static inline bool pgd_is_leaf(pgd_t pgd) return !!(pgd_raw(pgd) & cpu_to_be64(_PAGE_PTE)); } +#define __HAVE_ARCH_LOCKLESS_PGTBL_WALK_COUNTER +void start_lockless_pgtbl_walk(struct mm_struct *mm); +void end_lockless_pgtbl_walk(struct mm_struct *mm); +int running_lockless_pgtbl_walk(struct mm_struct *mm); + #endif /* __ASSEMBLY__ */ #endif /* _ASM_POWERPC_BOOK3S_64_PGTABLE_H_ */
--
2.20.1