From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg0-f71.google.com (mail-pg0-f71.google.com [74.125.83.71]) by kanga.kvack.org (Postfix) with ESMTP id 804096B0492 for ; Tue, 8 Aug 2017 10:36:28 -0400 (EDT) Received: by mail-pg0-f71.google.com with SMTP id k190so36271160pge.9 for ; Tue, 08 Aug 2017 07:36:28 -0700 (PDT) Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com. [148.163.156.1]) by mx.google.com with ESMTPS id b14si983447pfl.19.2017.08.08.07.36.27 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 08 Aug 2017 07:36:27 -0700 (PDT) Received: from pps.filterd (m0098409.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id v78EXuMs064075 for ; Tue, 8 Aug 2017 10:36:27 -0400 Received: from e06smtp12.uk.ibm.com (e06smtp12.uk.ibm.com [195.75.94.108]) by mx0a-001b2d01.pphosted.com with ESMTP id 2c7ce6wn66-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Tue, 08 Aug 2017 10:36:26 -0400 Received: from localhost by e06smtp12.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 8 Aug 2017 15:36:24 +0100 From: Laurent Dufour Subject: [PATCH 14/16] x86/mm: Add support for SPF events Date: Tue, 8 Aug 2017 16:35:47 +0200 In-Reply-To: <1502202949-8138-1-git-send-email-ldufour@linux.vnet.ibm.com> References: <1502202949-8138-1-git-send-email-ldufour@linux.vnet.ibm.com> Message-Id: <1502202949-8138-15-git-send-email-ldufour@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: paulmck@linux.vnet.ibm.com, peterz@infradead.org, akpm@linux-foundation.org, kirill@shutemov.name, ak@linux.intel.com, mhocko@kernel.org, dave@stgolabs.net, jack@suse.cz, Matthew Wilcox , benh@kernel.crashing.org, mpe@ellerman.id.au, paulus@samba.org, Thomas Gleixner , Ingo Molnar , hpa@zytor.com, Will Deacon Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, haren@linux.vnet.ibm.com, khandual@linux.vnet.ibm.com, npiggin@gmail.com, bsingharora@gmail.com, Tim Chen , linuxppc-dev@lists.ozlabs.org, x86@kernel.org Add support for the new speculative page faults software events. Signed-off-by: Laurent Dufour --- arch/x86/mm/fault.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index 46fb9c2a832d..17985f11b9da 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -1374,8 +1374,12 @@ __do_page_fault(struct pt_regs *regs, unsigned long error_code, * requires the vma pointer to be set. So in that case, * we fall through the normal path. */ - if (!(fault & VM_FAULT_RETRY || fault & VM_FAULT_ERROR)) + if (!(fault & VM_FAULT_RETRY || fault & VM_FAULT_ERROR)) { + perf_sw_event(PERF_COUNT_SW_SPF_DONE, 1, + regs, address); goto done; + } + perf_sw_event(PERF_COUNT_SW_SPF_FAILED, 1, regs, address); } /* -- 2.7.4 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org