Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754475Ab3ILLLs (ORCPT ); Thu, 12 Sep 2013 07:11:48 -0400 Received: from terminus.zytor.com ([198.137.202.10]:34441 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752921Ab3ILLLn (ORCPT ); Thu, 12 Sep 2013 07:11:43 -0400 Date: Thu, 12 Sep 2013 04:11:27 -0700 From: tip-bot for Stephane Eranian Message-ID: Cc: linux-kernel@vger.kernel.org, eranian@google.com, hpa@zytor.com, mingo@kernel.org, tglx@linutronix.de Reply-To: mingo@kernel.org, hpa@zytor.com, eranian@google.com, linux-kernel@vger.kernel.org, tglx@linutronix.de In-Reply-To: <20130911152222.GA28761@google.com> References: <20130911152222.GA28761@google.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/urgent] perf/x86: Add constraint for IVB CYCLE_ACTIVITY :CYCLES_LDM_PENDING Git-Commit-ID: 6113af14c82726d5a2993a7ba238df24c990a5ee X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7 (terminus.zytor.com [127.0.0.1]); Thu, 12 Sep 2013 04:11:34 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2524 Lines: 55 Commit-ID: 6113af14c82726d5a2993a7ba238df24c990a5ee Gitweb: http://git.kernel.org/tip/6113af14c82726d5a2993a7ba238df24c990a5ee Author: Stephane Eranian AuthorDate: Wed, 11 Sep 2013 08:22:22 -0700 Committer: Ingo Molnar CommitDate: Thu, 12 Sep 2013 07:58:26 +0200 perf/x86: Add constraint for IVB CYCLE_ACTIVITY:CYCLES_LDM_PENDING The IvyBridge event CYCLE_ACTIVITY:CYCLES_LDM_PENDING can only be measured on counters 0-3 when HT is off. When HT is on, you only have counters 0-3. If you program it on the eight counters for 1s on a 3GHz IVB laptop running a noploop, you see: 2 747 527 CYCLE_ACTIVITY:CYCLES_LDM_PENDING 2 747 527 CYCLE_ACTIVITY:CYCLES_LDM_PENDING 2 747 527 CYCLE_ACTIVITY:CYCLES_LDM_PENDING 2 747 527 CYCLE_ACTIVITY:CYCLES_LDM_PENDING 3 280 563 608 CYCLE_ACTIVITY:CYCLES_LDM_PENDING 3 280 563 608 CYCLE_ACTIVITY:CYCLES_LDM_PENDING 3 280 563 608 CYCLE_ACTIVITY:CYCLES_LDM_PENDING 3 280 563 608 CYCLE_ACTIVITY:CYCLES_LDM_PENDING Clearly the last 4 values are bogus. Signed-off-by: Stephane Eranian Cc: peterz@infradead.org Cc: ak@linux.intel.com Cc: zheng.z.yan@intel.com Cc: dhsharp@google.com Link: http://lkml.kernel.org/r/20130911152222.GA28761@google.com Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/perf_event_intel.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c index 0abf674..c62d883 100644 --- a/arch/x86/kernel/cpu/perf_event_intel.c +++ b/arch/x86/kernel/cpu/perf_event_intel.c @@ -124,6 +124,7 @@ static struct event_constraint intel_ivb_event_constraints[] __read_mostly = INTEL_UEVENT_CONSTRAINT(0x0148, 0x4), /* L1D_PEND_MISS.PENDING */ INTEL_UEVENT_CONSTRAINT(0x0279, 0xf), /* IDQ.EMTPY */ INTEL_UEVENT_CONSTRAINT(0x019c, 0xf), /* IDQ_UOPS_NOT_DELIVERED.CORE */ + INTEL_UEVENT_CONSTRAINT(0x02a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_LDM_PENDING */ INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_NO_EXECUTE */ INTEL_UEVENT_CONSTRAINT(0x05a3, 0xf), /* CYCLE_ACTIVITY.STALLS_L2_PENDING */ INTEL_UEVENT_CONSTRAINT(0x06a3, 0xf), /* CYCLE_ACTIVITY.STALLS_LDM_PENDING */ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/