From patchwork Wed Aug 30 17:11:10 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wei Liu X-Patchwork-Id: 9930273 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 5ADD660383 for ; Wed, 30 Aug 2017 17:14:18 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3F81D28538 for ; Wed, 30 Aug 2017 17:14:18 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 32AC3285AD; Wed, 30 Aug 2017 17:14:18 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 8F86D28538 for ; Wed, 30 Aug 2017 17:14:17 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dn6Wo-0002GL-S3; Wed, 30 Aug 2017 17:11:46 +0000 Received: from mail6.bemta6.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dn6Wn-0002G8-Cz for xen-devel@lists.xenproject.org; Wed, 30 Aug 2017 17:11:45 +0000 Received: from [193.109.254.147] by server-9.bemta-6.messagelabs.com id E2/2F-03422-0D1F6A95; Wed, 30 Aug 2017 17:11:44 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFmphkeJIrShJLcpLzFFi42JxWrohUvfCx2W RBmt+C1l83zKZyYHR4/CHKywBjFGsmXlJ+RUJrBln73cxFzRwVhye9oWxgXEPexcjB4eEgL/E sSa2LkZODjYBZYmfnb1gtoiAnkTTgeeMIDazQJ7E2dWLWEFsYQEPieYZx8FqWARUJVp614PFe QXMJR6ubmUGsSUE5CV2tV0Ei3MKWEi8m9jMAmILAdX0HrrDCGErSHRMP8YE0SsocXLmExaIXR ISB1+8YJ7AyDsLSWoWktQCRqZVjBrFqUVlqUW6hsZ6SUWZ6RkluYmZObqGBmZ6uanFxYnpqTm JScV6yfm5mxiBocMABDsYvywLOMQoycGkJMor+2ZZpBBfUn5KZUZicUZ8UWlOavEhRhkODiUJ 3rfvgHKCRanpqRVpmTnAIIZJS3DwKInwzgJJ8xYXJOYWZ6ZDpE4xKkqJ80q/B0oIgCQySvPg2 mCRc4lRVkqYlxHoECGegtSi3MwSVPlXjOIcjErCvAtAxvNk5pXATX8FtJgJaHGs11KQxSWJCC mpBsZKzf36JiclHzLOTGvZvCroBtu/B5wtHp+VFPaq/0m8Fj2rYv41D0e/JwvNDsyT9st/J2C 5MP1w3ZHL1RzpH+rbLeemVDx4Ncnu3a9VOnNycuYz96dmHbXXUrM99sVvZmxx9+Z9umGS1Zp/ 9r+wO5s+69OxS5dr5R7tcFZolfMKcP+WLcx+WEyJpTgj0VCLuag4EQBpuMLplwIAAA== X-Env-Sender: prvs=408b96340=wei.liu2@citrix.com X-Msg-Ref: server-13.tower-27.messagelabs.com!1504113102!104705165!1 X-Originating-IP: [66.165.176.89] X-SpamReason: No, hits=0.0 required=7.0 tests=sa_preprocessor: VHJ1c3RlZCBJUDogNjYuMTY1LjE3Ni44OSA9PiAyMDMwMDc=\n, received_headers: No Received headers X-StarScan-Received: X-StarScan-Version: 9.4.45; banners=-,-,- X-VirusChecked: Checked Received: (qmail 5774 invoked from network); 30 Aug 2017 17:11:43 -0000 Received: from smtp.citrix.com (HELO SMTP.CITRIX.COM) (66.165.176.89) by server-13.tower-27.messagelabs.com with RC4-SHA encrypted SMTP; 30 Aug 2017 17:11:43 -0000 X-IronPort-AV: E=Sophos;i="5.41,449,1498521600"; d="scan'208";a="437496770" From: Wei Liu To: Xen-devel Date: Wed, 30 Aug 2017 18:11:10 +0100 Message-ID: <20170830171112.3634-2-wei.liu2@citrix.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170830171112.3634-1-wei.liu2@citrix.com> References: <20170830171112.3634-1-wei.liu2@citrix.com> MIME-Version: 1.0 Cc: Andrew Cooper , Wei Liu , Jan Beulich Subject: [Xen-devel] [PATCH 1/3] x86/mm: introduce trace point for mmio_ro emulation X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" X-Virus-Scanned: ClamAV using ClamSMTP Using ptrw_emulation trace point is wrong. Signed-off-by: Wei Liu Acked-by: Jan Beulich --- xen/arch/x86/mm.c | 2 +- xen/include/asm-x86/perfc_defn.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/xen/arch/x86/mm.c b/xen/arch/x86/mm.c index 1f23470cef..ed80df02fa 100644 --- a/xen/arch/x86/mm.c +++ b/xen/arch/x86/mm.c @@ -5397,7 +5397,7 @@ int mmio_ro_do_page_fault(struct vcpu *v, unsigned long addr, /* Fallthrough */ case X86EMUL_RETRY: - perfc_incr(ptwr_emulations); + perfc_incr(mmio_ro_emulations); return EXCRET_fault_fixed; } diff --git a/xen/include/asm-x86/perfc_defn.h b/xen/include/asm-x86/perfc_defn.h index aac9331843..6db8746906 100644 --- a/xen/include/asm-x86/perfc_defn.h +++ b/xen/include/asm-x86/perfc_defn.h @@ -30,6 +30,7 @@ PERFCOUNTER(copy_user_faults, "copy_user faults") PERFCOUNTER(map_domain_page_count, "map_domain_page count") PERFCOUNTER(ptwr_emulations, "writable pt emulations") +PERFCOUNTER(mmio_ro_emulations, "mmio ro emulations") PERFCOUNTER(exception_fixed, "pre-exception fixed")