From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f199.google.com (mail-pf0-f199.google.com [209.85.192.199]) by kanga.kvack.org (Postfix) with ESMTP id 20EF46B049D for ; Tue, 8 Aug 2017 10:36:37 -0400 (EDT) Received: by mail-pf0-f199.google.com with SMTP id r13so34183235pfd.14 for ; Tue, 08 Aug 2017 07:36:37 -0700 (PDT) Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com. [148.163.156.1]) by mx.google.com with ESMTPS id z21si1003526pfi.49.2017.08.08.07.36.30 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 08 Aug 2017 07:36:31 -0700 (PDT) Received: from pps.filterd (m0098394.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id v78EZHDu130103 for ; Tue, 8 Aug 2017 10:36:30 -0400 Received: from e06smtp11.uk.ibm.com (e06smtp11.uk.ibm.com [195.75.94.107]) by mx0a-001b2d01.pphosted.com with ESMTP id 2c7eqnjkmt-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Tue, 08 Aug 2017 10:36:29 -0400 Received: from localhost by e06smtp11.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 8 Aug 2017 15:36:27 +0100 From: Laurent Dufour Subject: [PATCH 15/16] powerpc/mm: Add support for SPF events Date: Tue, 8 Aug 2017 16:35:48 +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: <1502202949-8138-16-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/powerpc/mm/fault.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c index c6cd40901dd0..112c4bc9da70 100644 --- a/arch/powerpc/mm/fault.c +++ b/arch/powerpc/mm/fault.c @@ -306,8 +306,13 @@ int do_page_fault(struct pt_regs *regs, unsigned long address, flags |= FAULT_FLAG_WRITE; fault = handle_speculative_fault(mm, address, flags); - 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); /* * Resetting flags since the following code assumes -- 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