Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935318AbcKWUKT convert rfc822-to-8bit (ORCPT ); Wed, 23 Nov 2016 15:10:19 -0500 Received: from mga14.intel.com ([192.55.52.115]:22682 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935233AbcKWUKS (ORCPT ); Wed, 23 Nov 2016 15:10:18 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.31,539,1473145200"; d="scan'208";a="34949878" From: "Liang, Kan" To: Peter Zijlstra CC: "mingo@redhat.com" , "acme@kernel.org" , "linux-kernel@vger.kernel.org" , "alexander.shishkin@linux.intel.com" , "tglx@linutronix.de" , "namhyung@kernel.org" , "jolsa@kernel.org" , "Hunter, Adrian" , "wangnan0@huawei.com" , "mark.rutland@arm.com" , "andi@firstfloor.org" Subject: RE: [PATCH 03/14] perf/x86: output multiplexing overhead Thread-Topic: [PATCH 03/14] perf/x86: output multiplexing overhead Thread-Index: AQHSRbFUZ/1H50cfGEeR2VY5gqzzzKDmeK2AgACGvgA= Date: Wed, 23 Nov 2016 20:09:29 +0000 Message-ID: <37D7C6CF3E00A74B8858931C1DB2F07750CA2708@SHSMSX103.ccr.corp.intel.com> References: <1479894292-16277-1-git-send-email-kan.liang@intel.com> <1479894292-16277-4-git-send-email-kan.liang@intel.com> <20161123200633.GY3092@twins.programming.kicks-ass.net> In-Reply-To: <20161123200633.GY3092@twins.programming.kicks-ass.net> Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-titus-metadata-40: eyJDYXRlZ29yeUxhYmVscyI6IiIsIk1ldGFkYXRhIjp7Im5zIjoiaHR0cDpcL1wvd3d3LnRpdHVzLmNvbVwvbnNcL0ludGVsMyIsImlkIjoiODNhMDMyNzUtMDAxMy00ZTE5LTliZDUtM2UwNjM1ZDQ2ZTA1IiwicHJvcHMiOlt7Im4iOiJDVFBDbGFzc2lmaWNhdGlvbiIsInZhbHMiOlt7InZhbHVlIjoiQ1RQX0lDIn1dfV19LCJTdWJqZWN0TGFiZWxzIjpbXSwiVE1DVmVyc2lvbiI6IjE1LjkuNi42IiwiVHJ1c3RlZExhYmVsSGFzaCI6InJLRmxzdzhwSVY1TFBcL2VETHFYa1hIdGZ5bmt5eVJwdHgwV1wvRmtPVDNjUT0ifQ== x-ctpclassification: CTP_IC x-originating-ip: [10.239.127.40] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 617 Lines: 22 > > On Wed, Nov 23, 2016 at 04:44:41AM -0500, kan.liang@intel.com wrote: > > From: Kan Liang > > > > Multiplexing overhead is one of the key overhead when the number of > > events is more than available counters. > > > > Signed-off-by: Kan Liang > > --- > > include/linux/perf_event.h | 2 ++ > > include/uapi/linux/perf_event.h | 1 + > > kernel/events/core.c | 16 ++++++++++++++++ > > 3 files changed, 19 insertions(+) > > The subject says x86 specific, but its _all_ core code. Oh, Sorry. I will change the subject in next version. Thanks, Kan