Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752565AbdHHOhQ (ORCPT ); Tue, 8 Aug 2017 10:37:16 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:41759 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752390AbdHHOg1 (ORCPT ); Tue, 8 Aug 2017 10:36:27 -0400 From: Laurent Dufour 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 Subject: [PATCH 14/16] x86/mm: Add support for SPF events Date: Tue, 8 Aug 2017 16:35:47 +0200 X-Mailer: git-send-email 2.7.4 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> X-TM-AS-GCONF: 00 x-cbid: 17080814-0008-0000-0000-0000048B4D78 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17080814-0009-0000-0000-00001E1A6DD9 Message-Id: <1502202949-8138-15-git-send-email-ldufour@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-08-08_07:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1706020000 definitions=main-1708080235 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 846 Lines: 27 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