Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757373AbaJIQfo (ORCPT ); Thu, 9 Oct 2014 12:35:44 -0400 Received: from mail-wi0-f171.google.com ([209.85.212.171]:39126 "EHLO mail-wi0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757310AbaJIQfb (ORCPT ); Thu, 9 Oct 2014 12:35:31 -0400 From: Stephane Eranian To: linux-kernel@vger.kernel.org Cc: peterz@infradead.org, mingo@elte.hu, ak@linux.intel.com, jolsa@redhat.com, kan.liang@intel.com, bp@alien8.de, maria.n.dimakopoulou@gmail.com Subject: [PATCH v2 03/12] perf/x86: add 3 new scheduling callbacks Date: Thu, 9 Oct 2014 18:34:37 +0200 Message-Id: <1412872486-2930-4-git-send-email-eranian@google.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1412872486-2930-1-git-send-email-eranian@google.com> References: <1412872486-2930-1-git-send-email-eranian@google.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Maria Dimakopoulou This patch adds 3 new PMU model specific callbacks during the event scheduling done by x86_schedule_events(). - start_scheduling: invoked when entering the schedule routine. - stop_scheduling: invoked at the end of the schedule routine - commit_scheduling: invoked for each committed event To be used optionally by model-specific code. Reviewed-by: Stephane Eranian Signed-off-by: Maria Dimakopoulou --- arch/x86/kernel/cpu/perf_event.c | 9 +++++++++ arch/x86/kernel/cpu/perf_event.h | 9 +++++++++ 2 files changed, 18 insertions(+) diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c index 542435f..ca44ba2 100644 --- a/arch/x86/kernel/cpu/perf_event.c +++ b/arch/x86/kernel/cpu/perf_event.c @@ -734,6 +734,9 @@ int x86_schedule_events(struct cpu_hw_events *cpuc, int n, int *assign) bitmap_zero(used_mask, X86_PMC_IDX_MAX); + if (x86_pmu.start_scheduling) + x86_pmu.start_scheduling(cpuc); + for (i = 0, wmin = X86_PMC_IDX_MAX, wmax = 0; i < n; i++) { hwc = &cpuc->event_list[i]->hw; c = x86_pmu.get_event_constraints(cpuc, cpuc->event_list[i]); @@ -780,6 +783,8 @@ int x86_schedule_events(struct cpu_hw_events *cpuc, int n, int *assign) for (i = 0; i < n; i++) { e = cpuc->event_list[i]; e->hw.flags |= PERF_X86_EVENT_COMMITTED; + if (x86_pmu.commit_scheduling) + x86_pmu.commit_scheduling(cpuc, e, assign[i]); } } /* @@ -800,6 +805,10 @@ int x86_schedule_events(struct cpu_hw_events *cpuc, int n, int *assign) x86_pmu.put_event_constraints(cpuc, e); } } + + if (x86_pmu.stop_scheduling) + x86_pmu.stop_scheduling(cpuc); + return num ? -EINVAL : 0; } diff --git a/arch/x86/kernel/cpu/perf_event.h b/arch/x86/kernel/cpu/perf_event.h index 4c5a00c..b6848c3 100644 --- a/arch/x86/kernel/cpu/perf_event.h +++ b/arch/x86/kernel/cpu/perf_event.h @@ -447,6 +447,15 @@ struct x86_pmu { void (*put_event_constraints)(struct cpu_hw_events *cpuc, struct perf_event *event); + + void (*commit_scheduling)(struct cpu_hw_events *cpuc, + struct perf_event *event, + int cntr); + + void (*start_scheduling)(struct cpu_hw_events *cpuc); + + void (*stop_scheduling)(struct cpu_hw_events *cpuc); + struct event_constraint *event_constraints; struct x86_pmu_quirk *quirks; int perfctr_second_write; -- 1.9.1 -- 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/