[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Tue, 7 Jul 2020 18:50:02 -0400
From: Peter Xu <peterx@...hat.com>
To: linux-kernel@...r.kernel.org, linux-mm@...ck.org
Cc: Gerald Schaefer <gerald.schaefer@...ibm.com>,
Linus Torvalds <torvalds@...ux-foundation.org>,
peterx@...hat.com, Andrew Morton <akpm@...ux-foundation.org>,
Will Deacon <will@...nel.org>,
Andrea Arcangeli <aarcange@...hat.com>,
David Rientjes <rientjes@...gle.com>,
John Hubbard <jhubbard@...dia.com>,
Michael Ellerman <mpe@...erman.id.au>,
Guo Ren <guoren@...nel.org>, linux-csky@...r.kernel.org
Subject: [PATCH v5 06/25] mm/csky: Use general page fault accounting
Use the general page fault accounting by passing regs into handle_mm_fault().
It naturally solve the issue of multiple page fault accounting when page fault
retry happened.
CC: Guo Ren <guoren@...nel.org>
CC: linux-csky@...r.kernel.org
Acked-by: Guo Ren <guoren@...nel.org>
Signed-off-by: Peter Xu <peterx@...hat.com>
---
arch/csky/mm/fault.c | 12 +-----------
1 file changed, 1 insertion(+), 11 deletions(-)
diff --git a/arch/csky/mm/fault.c b/arch/csky/mm/fault.c
index 7137e2e8dc57..c3f580714ee4 100644
--- a/arch/csky/mm/fault.c
+++ b/arch/csky/mm/fault.c
@@ -151,7 +151,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long write,
* the fault.
*/
fault = handle_mm_fault(vma, address, write ? FAULT_FLAG_WRITE : 0,
- NULL);
+ regs);
if (unlikely(fault & VM_FAULT_ERROR)) {
if (fault & VM_FAULT_OOM)
goto out_of_memory;
@@ -161,16 +161,6 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long write,
goto bad_area;
BUG();
}
- if (fault & VM_FAULT_MAJOR) {
- tsk->maj_flt++;
- perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, regs,
- address);
- } else {
- tsk->min_flt++;
- perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, regs,
- address);
- }
-
mmap_read_unlock(mm);
return;
--
2.26.2
Powered by blists - more mailing lists