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 34E81C05027 for ; Mon, 23 Jan 2023 13:00:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232045AbjAWNAU (ORCPT ); Mon, 23 Jan 2023 08:00:20 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34646 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232029AbjAWNAS (ORCPT ); Mon, 23 Jan 2023 08:00:18 -0500 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 5F31810E9; Mon, 23 Jan 2023 05:00:16 -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 D4662143D; Mon, 23 Jan 2023 05:00:57 -0800 (PST) Received: from a077893.arm.com (unknown [10.163.50.146]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id E36FC3F64C; Mon, 23 Jan 2023 05:00:10 -0800 (PST) From: Anshuman Khandual To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, will@kernel.org, catalin.marinas@arm.com, mark.rutland@arm.com Cc: Anshuman Khandual , 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 V8 1/6] drivers: perf: arm_pmu: Add new sched_task() callback Date: Mon, 23 Jan 2023 18:29:51 +0530 Message-Id: <20230123125956.1350336-2-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230123125956.1350336-1-anshuman.khandual@arm.com> References: <20230123125956.1350336-1-anshuman.khandual@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 9b593f985805..14a3ed3bdb0b 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); @@ -873,6 +881,7 @@ 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 ef914a600087..2a9d07cee927 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); bool (*filter)(struct pmu *pmu, int cpu); + 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