Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754662AbaFSMiv (ORCPT ); Thu, 19 Jun 2014 08:38:51 -0400 Received: from terminus.zytor.com ([198.137.202.10]:57596 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754559AbaFSMit (ORCPT ); Thu, 19 Jun 2014 08:38:49 -0400 Date: Thu, 19 Jun 2014 05:37:41 -0700 From: tip-bot for Vince Weaver Message-ID: Cc: linux-kernel@vger.kernel.org, paulus@samba.org, hpa@zytor.com, mingo@kernel.org, james.hogan@imgtec.com, peterz@infradead.org, acme@kernel.org, vincent.weaver@maine.edu, tglx@linutronix.de Reply-To: mingo@kernel.org, hpa@zytor.com, paulus@samba.org, linux-kernel@vger.kernel.org, james.hogan@imgtec.com, peterz@infradead.org, acme@kernel.org, vincent.weaver@maine.edu, tglx@linutronix.de In-Reply-To: References: To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/core] metag, perf: Use common PMU interrupt disabled code Git-Commit-ID: 1b92722fafe2003e49ec904f33c0020ade36bd16 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 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 1b92722fafe2003e49ec904f33c0020ade36bd16 Gitweb: http://git.kernel.org/tip/1b92722fafe2003e49ec904f33c0020ade36bd16 Author: Vince Weaver AuthorDate: Sun, 15 Jun 2014 02:03:13 -0400 Committer: Ingo Molnar CommitDate: Wed, 18 Jun 2014 18:43:45 +0200 metag, perf: Use common PMU interrupt disabled code Transition to using the new generic PERF_PMU_CAP_NO_INTERRUPT method for failing a sampling event when no PMU interrupt is available. Signed-off-by: Vince Weaver Acked-by: James Hogan Signed-off-by: Peter Zijlstra Cc: Arnaldo Carvalho de Melo Cc: Paul Mackerras Cc: linux-metag@vger.kernel.org Link: http://lkml.kernel.org/r/alpine.DEB.2.10.1406150202050.16738@vincent-weaver-1.umelst.maine.edu Signed-off-by: Ingo Molnar --- arch/metag/kernel/perf/perf_event.c | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-) diff --git a/arch/metag/kernel/perf/perf_event.c b/arch/metag/kernel/perf/perf_event.c index 5cc4d4d..02c0873 100644 --- a/arch/metag/kernel/perf/perf_event.c +++ b/arch/metag/kernel/perf/perf_event.c @@ -568,16 +568,6 @@ static int _hw_perf_event_init(struct perf_event *event) return -EINVAL; /* - * Early cores have "limited" counters - they have no overflow - * interrupts - and so are unable to do sampling without extra work - * and timer assistance. - */ - if (metag_pmu->max_period == 0) { - if (hwc->sample_period) - return -EINVAL; - } - - /* * Don't assign an index until the event is placed into the hardware. * -1 signifies that we're still deciding where to put it. On SMP * systems each core has its own set of counters, so we can't do any @@ -866,6 +856,15 @@ static int __init init_hw_perf_events(void) pr_info("enabled with %s PMU driver, %d counters available\n", metag_pmu->name, metag_pmu->max_events); + /* + * Early cores have "limited" counters - they have no overflow + * interrupts - and so are unable to do sampling without extra work + * and timer assistance. + */ + if (metag_pmu->max_period == 0) { + metag_pmu->pmu.capabilities |= PERF_PMU_CAP_NO_INTERRUPT; + } + /* Initialise the active events and reservation mutex */ atomic_set(&metag_pmu->active_events, 0); mutex_init(&metag_pmu->reserve_mutex); -- 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/