From nobody Thu Sep 18 09:59:47 2025 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 04E1FC63705 for ; Thu, 8 Dec 2022 08:44:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230041AbiLHIoy (ORCPT ); Thu, 8 Dec 2022 03:44:54 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48106 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230021AbiLHIod (ORCPT ); Thu, 8 Dec 2022 03:44:33 -0500 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 2CFB663BB5; Thu, 8 Dec 2022 00:44:32 -0800 (PST) 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 AE7DBD6E; Thu, 8 Dec 2022 00:44:38 -0800 (PST) Received: from a077893.blr.arm.com (unknown [10.162.40.44]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id E45443F73D; Thu, 8 Dec 2022 00:44:26 -0800 (PST) From: Anshuman Khandual To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, mark.rutland@arm.com Cc: Anshuman Khandual , Catalin Marinas , Will Deacon , 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: [PATCH V6 1/7] drivers: perf: arm_pmu: Add new sched_task() callback Date: Thu, 8 Dec 2022 14:13:56 +0530 Message-Id: <20221208084402.863310-2-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221208084402.863310-1-anshuman.khandual@arm.com> References: <20221208084402.863310-1-anshuman.khandual@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" 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 Signed-off-by: Anshuman Khandual --- 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 3f07df5a7e95..66880a4bb248 100644 --- a/drivers/perf/arm_pmu.c +++ b/drivers/perf/arm_pmu.c @@ -520,6 +520,14 @@ static int armpmu_event_init(struct perf_event *event) return __hw_perf_event_init(event); } =20 +static void armpmu_sched_task(struct perf_event_context *ctx, bool sched_i= n) +{ + struct arm_pmu *armpmu =3D to_arm_pmu(ctx->pmu); + + if (armpmu->sched_task) + armpmu->sched_task(ctx, sched_in); +} + static void armpmu_enable(struct pmu *pmu) { struct arm_pmu *armpmu =3D to_arm_pmu(pmu); @@ -877,6 +885,7 @@ static struct arm_pmu *__armpmu_alloc(gfp_t flags) } =20 pmu->pmu =3D (struct pmu) { + .sched_task =3D armpmu_sched_task, .pmu_enable =3D armpmu_enable, .pmu_disable =3D armpmu_disable, .event_init =3D armpmu_event_init, diff --git a/include/linux/perf/arm_pmu.h b/include/linux/perf/arm_pmu.h index 0356cb6a215d..60d4e4c9b3ea 100644 --- a/include/linux/perf/arm_pmu.h +++ b/include/linux/perf/arm_pmu.h @@ -101,6 +101,7 @@ struct arm_pmu { void (*reset)(void *); int (*map_event)(struct perf_event *event); int (*filter_match)(struct perf_event *event); + void (*sched_task)(struct perf_event_context *ctx, bool sched_in); int num_events; bool secure_access; /* 32-bit ARM only */ #define ARMV8_PMUV3_MAX_COMMON_EVENTS 0x40 --=20 2.25.1