From nobody Fri Jan 2 20:36:24 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 502A5E95A8E for ; Mon, 9 Oct 2023 07:56:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345442AbjJIH4n (ORCPT ); Mon, 9 Oct 2023 03:56:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58568 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232666AbjJIH4l (ORCPT ); Mon, 9 Oct 2023 03:56:41 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 0E6E58F for ; Mon, 9 Oct 2023 00:56:40 -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 1C1301FB; Mon, 9 Oct 2023 00:57:20 -0700 (PDT) Received: from a077893.blr.arm.com (a077893.blr.arm.com [10.162.41.8]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 76C913F762; Mon, 9 Oct 2023 00:56:37 -0700 (PDT) From: Anshuman Khandual To: linux-arm-kernel@lists.infradead.org Cc: Anshuman Khandual , Will Deacon , Mark Rutland , linux-kernel@vger.kernel.org Subject: [PATCH] driver: perf: arm_pmuv3: Read PMMIR_EL1 unconditionally Date: Mon, 9 Oct 2023 13:26:31 +0530 Message-Id: <20231009075631.193208-1-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.25.1 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" PMMIR_EL1 needs to be captured in 'armpmu->reg_pmmir', for all appropriate PMU version implementations where the register is available and reading it is valid . Hence checking for bus slot event presence is redundant and can be dropped. Cc: Will Deacon Cc: Mark Rutland Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Anshuman Khandual Reviewed-by: James Clark --- This applies on v6.6-rc5. =20 drivers/perf/arm_pmuv3.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/perf/arm_pmuv3.c b/drivers/perf/arm_pmuv3.c index 1e72b486c033..9fc1b6da5106 100644 --- a/drivers/perf/arm_pmuv3.c +++ b/drivers/perf/arm_pmuv3.c @@ -1129,7 +1129,7 @@ static void __armv8pmu_probe_pmu(void *info) pmceid, ARMV8_PMUV3_MAX_COMMON_EVENTS); =20 /* store PMMIR register for sysfs */ - if (is_pmuv3p4(pmuver) && (pmceid_raw[1] & BIT(31))) + if (is_pmuv3p4(pmuver)) cpu_pmu->reg_pmmir =3D read_pmmir(); else cpu_pmu->reg_pmmir =3D 0; --=20 2.25.1