From: akpm@linux-foundation.org
To: bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com,
luto@kernel.org, mingo@redhat.com, mm-commits@vger.kernel.org,
peterx@redhat.com, peterz@infradead.org, tglx@linutronix.de
Subject: [merged] mm-x86-use-general-page-fault-accounting.patch removed from -mm tree
Date: Wed, 12 Aug 2020 14:07:02 -0700 [thread overview]
Message-ID: <20200812210702.3pr_rV7FA%akpm@linux-foundation.org> (raw)
The patch titled
Subject: mm/x86: use general page fault accounting
has been removed from the -mm tree. Its filename was
mm-x86-use-general-page-fault-accounting.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Peter Xu <peterx@redhat.com>
Subject: mm/x86: use general page fault accounting
Use the general page fault accounting by passing regs into
handle_mm_fault().
Link: http://lkml.kernel.org/r/20200707225021.200906-23-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
arch/x86/mm/fault.c | 17 ++---------------
1 file changed, 2 insertions(+), 15 deletions(-)
--- a/arch/x86/mm/fault.c~mm-x86-use-general-page-fault-accounting
+++ a/arch/x86/mm/fault.c
@@ -1139,7 +1139,7 @@ void do_user_addr_fault(struct pt_regs *
struct vm_area_struct *vma;
struct task_struct *tsk;
struct mm_struct *mm;
- vm_fault_t fault, major = 0;
+ vm_fault_t fault;
unsigned int flags = FAULT_FLAG_DEFAULT;
tsk = current;
@@ -1291,8 +1291,7 @@ good_area:
* userland). The return to userland is identified whenever
* FAULT_FLAG_USER|FAULT_FLAG_KILLABLE are both set in flags.
*/
- fault = handle_mm_fault(vma, address, flags, NULL);
- major |= fault & VM_FAULT_MAJOR;
+ fault = handle_mm_fault(vma, address, flags, regs);
/* Quick path to respond to signals */
if (fault_signal_pending(fault, regs)) {
@@ -1319,18 +1318,6 @@ good_area:
return;
}
- /*
- * Major/minor page fault accounting. If any of the events
- * returned VM_FAULT_MAJOR, we account it as a major fault.
- */
- if (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);
- }
-
check_v8086_mode(regs, address, tsk);
}
NOKPROBE_SYMBOL(do_user_addr_fault);
_
Patches currently in -mm which might be from peterx@redhat.com are
reply other threads:[~2020-08-12 21:07 UTC|newest]
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