[PATCH v6 04/11] powerpc/mce_power: Use functions to track lockless pgtbl walks
From: Leonardo Bras <hidden>
Date: 2020-02-06 03:11:37
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
Applies the new functions used for tracking lockless pgtable walks on
addr_to_pfn().
local_irq_{save,restore} is already inside {begin,end}_lockless_pgtbl_walk,
so there is no need to repeat it here.
Signed-off-by: Leonardo Bras <redacted>
---
arch/powerpc/kernel/mce_power.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/kernel/mce_power.c b/arch/powerpc/kernel/mce_power.c
index 1cbf7f1a4e3d..a9e38ef4e437 100644
--- a/arch/powerpc/kernel/mce_power.c
+++ b/arch/powerpc/kernel/mce_power.c@@ -29,7 +29,7 @@ unsigned long addr_to_pfn(struct pt_regs *regs, unsigned long addr) { pte_t *ptep; unsigned int shift; - unsigned long pfn, flags; + unsigned long pfn, irq_mask; struct mm_struct *mm; if (user_mode(regs))
@@ -37,7 +37,7 @@ unsigned long addr_to_pfn(struct pt_regs *regs, unsigned long addr) else mm = &init_mm; - local_irq_save(flags); + irq_mask = begin_lockless_pgtbl_walk(); ptep = __find_linux_pte(mm->pgd, addr, NULL, &shift); if (!ptep || pte_special(*ptep)) {
@@ -53,7 +53,7 @@ unsigned long addr_to_pfn(struct pt_regs *regs, unsigned long addr) } out: - local_irq_restore(flags); + end_lockless_pgtbl_walk(irq_mask); return pfn; }
--
2.24.1