From nobody Wed Apr 8 14:09:19 2026 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 30271ECAAD5 for ; Mon, 5 Sep 2022 05:43:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235779AbiIEFnc (ORCPT ); Mon, 5 Sep 2022 01:43:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57790 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235922AbiIEFnX (ORCPT ); Mon, 5 Sep 2022 01:43:23 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 75C802F653; Sun, 4 Sep 2022 22:43:15 -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 7C992D6E; Sun, 4 Sep 2022 22:43:21 -0700 (PDT) Received: from a077893.blr.arm.com (unknown [10.162.40.17]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 1985E3F73D; Sun, 4 Sep 2022 22:43:38 -0700 (PDT) From: Anshuman Khandual To: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, peterz@infradead.org Cc: Anshuman Khandual , James Clark , Ingo Molnar , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , linux-arm-kernel@lists.infradead.org, x86@kernel.org, Will Deacon , Catalin Marinas Subject: [PATCH V2 3/4] arm64/perf: Assert all platform event flags are within PERF_EVENT_FLAG_ARCH Date: Mon, 5 Sep 2022 11:12:38 +0530 Message-Id: <20220905054239.324029-4-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220905054239.324029-1-anshuman.khandual@arm.com> References: <20220905054239.324029-1-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" Ensure all platform specific event flags are within PERF_EVENT_FLAG_ARCH. Cc: Will Deacon Cc: Catalin Marinas Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Arnaldo Carvalho de Melo Cc: Mark Rutland Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Namhyung Kim Cc: linux-arm-kernel@lists.infradead.org Cc: linux-perf-users@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Anshuman Khandual Reviewed-by: James Clark --- drivers/perf/arm_spe_pmu.c | 4 +++- include/linux/perf/arm_pmu.h | 9 +++++---- 2 files changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/perf/arm_spe_pmu.c b/drivers/perf/arm_spe_pmu.c index b65a7d9640e1..db8a0a841062 100644 --- a/drivers/perf/arm_spe_pmu.c +++ b/drivers/perf/arm_spe_pmu.c @@ -44,7 +44,9 @@ * This allows us to perform the check, i.e, perfmon_capable(), * in the context of the event owner, once, during the event_init(). */ -#define SPE_PMU_HW_FLAGS_CX BIT(0) +#define SPE_PMU_HW_FLAGS_CX 0x00001 + +static_assert((PERF_EVENT_FLAG_ARCH & SPE_PMU_HW_FLAGS_CX) =3D=3D SPE_PMU_= HW_FLAGS_CX); =20 static void set_spe_event_has_cx(struct perf_event *event) { diff --git a/include/linux/perf/arm_pmu.h b/include/linux/perf/arm_pmu.h index 0407a38b470a..0356cb6a215d 100644 --- a/include/linux/perf/arm_pmu.h +++ b/include/linux/perf/arm_pmu.h @@ -24,10 +24,11 @@ /* * ARM PMU hw_event flags */ -/* Event uses a 64bit counter */ -#define ARMPMU_EVT_64BIT 1 -/* Event uses a 47bit counter */ -#define ARMPMU_EVT_47BIT 2 +#define ARMPMU_EVT_64BIT 0x00001 /* Event uses a 64bit counter */ +#define ARMPMU_EVT_47BIT 0x00002 /* Event uses a 47bit counter */ + +static_assert((PERF_EVENT_FLAG_ARCH & ARMPMU_EVT_64BIT) =3D=3D ARMPMU_EVT_= 64BIT); +static_assert((PERF_EVENT_FLAG_ARCH & ARMPMU_EVT_47BIT) =3D=3D ARMPMU_EVT_= 47BIT); =20 #define HW_OP_UNSUPPORTED 0xFFFF #define C(_x) PERF_COUNT_HW_CACHE_##_x --=20 2.25.1