From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 548AEC77B73 for ; Mon, 5 Jun 2023 07:27:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229710AbjFEH0d (ORCPT ); Mon, 5 Jun 2023 03:26:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53778 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231540AbjFEH0S (ORCPT ); Mon, 5 Jun 2023 03:26:18 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id A5F30DA; Mon, 5 Jun 2023 00:26:15 -0700 (PDT) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id E98D6D75; Mon, 5 Jun 2023 00:27:00 -0700 (PDT) Received: from FVFF77S0Q05N (unknown [10.57.24.244]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 3454D3F793; Mon, 5 Jun 2023 00:26:13 -0700 (PDT) Date: Mon, 5 Jun 2023 08:26:10 +0100 From: Mark Rutland To: Anshuman Khandual Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, will@kernel.org, catalin.marinas@arm.com, Mark Brown , James Clark , Rob Herring , Marc Zyngier , Suzuki Poulose , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , linux-perf-users@vger.kernel.org Subject: Re: [PATCH V11 01/10] drivers: perf: arm_pmu: Add new sched_task() callback Message-ID: References: <20230531040428.501523-1-anshuman.khandual@arm.com> <20230531040428.501523-2-anshuman.khandual@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230531040428.501523-2-anshuman.khandual@arm.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, May 31, 2023 at 09:34:19AM +0530, Anshuman Khandual wrote: > This adds armpmu_sched_task(), as generic pmu's sched_task() override which > in turn can utilize a new arm_pmu.sched_task() callback when available from > the arm_pmu instance. This new callback will be used while enabling BRBE in > ARMV8 PMU. > > Cc: Catalin Marinas > Cc: Will Deacon > Cc: Mark Rutland > Cc: linux-arm-kernel@lists.infradead.org > Cc: linux-kernel@vger.kernel.org > Tested-by: James Clark > Signed-off-by: Anshuman Khandual Acked-by: Mark Rutland > --- > drivers/perf/arm_pmu.c | 9 +++++++++ > include/linux/perf/arm_pmu.h | 1 + > 2 files changed, 10 insertions(+) > > diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c > index 15bd1e34a88e..aada47e3b126 100644 > --- a/drivers/perf/arm_pmu.c > +++ b/drivers/perf/arm_pmu.c > @@ -517,6 +517,14 @@ static int armpmu_event_init(struct perf_event *event) > return __hw_perf_event_init(event); > } > > +static void armpmu_sched_task(struct perf_event_pmu_context *pmu_ctx, bool sched_in) > +{ > + struct arm_pmu *armpmu = to_arm_pmu(pmu_ctx->pmu); > + > + if (armpmu->sched_task) > + armpmu->sched_task(pmu_ctx, sched_in); > +} > + > static void armpmu_enable(struct pmu *pmu) > { > struct arm_pmu *armpmu = to_arm_pmu(pmu); > @@ -858,6 +866,7 @@ struct arm_pmu *armpmu_alloc(void) > } > > pmu->pmu = (struct pmu) { > + .sched_task = armpmu_sched_task, > .pmu_enable = armpmu_enable, > .pmu_disable = armpmu_disable, > .event_init = armpmu_event_init, > diff --git a/include/linux/perf/arm_pmu.h b/include/linux/perf/arm_pmu.h > index 525b5d64e394..f7fbd162ca4c 100644 > --- a/include/linux/perf/arm_pmu.h > +++ b/include/linux/perf/arm_pmu.h > @@ -100,6 +100,7 @@ struct arm_pmu { > void (*stop)(struct arm_pmu *); > void (*reset)(void *); > int (*map_event)(struct perf_event *event); > + void (*sched_task)(struct perf_event_pmu_context *pmu_ctx, bool sched_in); > int num_events; > bool secure_access; /* 32-bit ARM only */ > #define ARMV8_PMUV3_MAX_COMMON_EVENTS 0x40 > -- > 2.25.1 >