From patchwork Fri Jun 7 20:31:25 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rob Herring (Arm)" X-Patchwork-Id: 13690644 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7C107C27C53 for ; Fri, 7 Jun 2024 20:32:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:MIME-Version:Message-Id:Date: Subject:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=HFZEnI9GvKqtwXs9tnsN750nkzMlbwcGWhdgbKU4Y80=; b=TUJ9R4On7xU+u/ Btf+HRGjvLkvlUunhB9+yn29w8k5EAKOTYBbURG/fFg9uLUl979Tycdqnv6N2BwJj1rTRCY+hmxGc OgDYDG/37dhPASW5GefQ29xBaT+aWJ2sDxKAQhAeJSAgzqPw/8CxivfWw0DhgFY0RWuO1TFpsvByv OW5RPGFLomDB6yAnTaXl8MCi4Grkv9vspr4CNek+GxG98IgbXAAWePH+2bs2v2XE3op+RXgdXZmc8 vC9ovzbwq3khNpX12981MCoYqb4qrYSp0MyYd9hDNUBQAkW2m1TnkBCQi1busg4TBUWwVhKTzKylJ a7uznnFoMxI+oA8gaOHQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sFgFr-0000000FZzE-3fia; Fri, 07 Jun 2024 20:32:07 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sFgFo-0000000FZxo-24p8 for linux-arm-kernel@lists.infradead.org; Fri, 07 Jun 2024 20:32:05 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 4FB71616E0; Fri, 7 Jun 2024 20:32:03 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C9ACFC2BBFC; Fri, 7 Jun 2024 20:32:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1717792323; bh=X4B1La1z1pxjkZPYe8MXZt4HnbUKOeGUnGDR7svXFnY=; h=From:Subject:Date:To:Cc:From; b=i0S21KciwE9FHfuVZmGF6pWg2iaggajBlMr1gDX7jHhHbqi61mw6qJcRclL5w3U4K tAiWVDL9hgNZ8/Wz9/M7BJq4rZimfXFUYF48bC33grP4XEjUeOf/E2VIEa4YjaP3Zi gj7bVQE/F6uiqdYJ0MqatakrSQODbpxtMty4PPvaFh8CpGqvBC2DHuNK1NR4dSEQvc ynm6cSIbdI72F3E3o7C4sO6eoFXPyKAda9GbbsMYc6NLdVCW3B0uO+PM8cqD4lnrXf iTSqGMr9a8wNwaHCrb563J57HcqWeRTx5dGe2SdWOqZVh04HPnbDLlJxDgmgf1aW6h gW4RfM6XmkDng== From: "Rob Herring (Arm)" Subject: [PATCH 0/9] arm64: Add support for Armv9.4 PMU fixed instruction counter Date: Fri, 07 Jun 2024 14:31:25 -0600 Message-Id: <20240607-arm-pmu-3-9-icntr-v1-0-c7bd2dceff3b@kernel.org> MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIAB1uY2YC/x3MPQqAMAxA4atIZgOx9f8q4iA2agarpCqCeHeL4 ze890BgFQ7QJg8oXxJk8xFZmsC4DH5mFBcNhkxOJVU46Ir7eqLFBmX0hyLltiqcc0S1gdjtypP c/7Pr3/cDRyd5VGMAAAA= To: Russell King , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , Will Deacon , Marc Zyngier , Oliver Upton , James Morse , Suzuki K Poulose , Zenghui Yu , Catalin Marinas Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, kvmarm@lists.linux.dev X-Mailer: b4 0.14-dev X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240607_133204_807506_9E64D5EC X-CRM114-Status: GOOD ( 15.52 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This series adds support for the optional fixed instruction counter added in Armv9.4 PMU. Most of the series is a refactoring to remove the index to counter number conversion which dates back to the Armv7 PMU driver. Removing it is necessary in order to support more than 32 counters without a bunch of conditional code further complicating the conversion. Patches 1-2 move the 32-bit Arm PMU drivers into drivers/perf/ and drop non-DT probe support. These can be taken first if there's no comments on them. Patch 3 changes struct arm_pmu.num_events to a bitmap of events, and updates all the users. This removes the index to counter conversion on the PMUv3 and Armv7 drivers. Patch 4 updates various register accessors to use 64-bit values matching the register size. Patches 5-6 update KVM PMU register accesses to use shared accessors from asm/arm_pmuv3.h. Patches 7-8 rework KVM and perf PMU defines for counter indexes and number of counters. Patch 9 finally adds support for the fixed instruction counter. I tested this on FVP with VHE host and a guest. I tested the Armv7 PMU changes with QEMU. Signed-off-by: Rob Herring (Arm) --- Rob Herring (Arm) (9): perf/arm: Move 32-bit PMU drivers to drivers/perf/ perf: arm_v6/7_pmu: Drop non-DT probe support perf: arm_pmu: Remove event index to counter remapping perf: arm_pmuv3: Prepare for more than 32 counters KVM: arm64: pmu: Use arm_pmuv3.h register accessors KVM: arm64: pmu: Use generated define for PMSELR_EL0.SEL access arm64: perf/kvm: Use a common PMU cycle counter define KVM: arm64: Refine PMU defines for number of counters perf: arm_pmuv3: Add support for Armv9.4 PMU instruction counter arch/arm/include/asm/arm_pmuv3.h | 23 ++++ arch/arm/kernel/Makefile | 2 - arch/arm64/include/asm/arm_pmuv3.h | 56 ++++++++- arch/arm64/include/asm/kvm_host.h | 8 +- arch/arm64/include/asm/sysreg.h | 1 - arch/arm64/kvm/pmu-emul.c | 14 +-- arch/arm64/kvm/pmu.c | 88 ++++--------- arch/arm64/kvm/sys_regs.c | 11 +- arch/arm64/tools/sysreg | 30 +++++ drivers/perf/Kconfig | 12 ++ drivers/perf/Makefile | 3 + drivers/perf/arm_pmu.c | 11 +- drivers/perf/arm_pmuv3.c | 138 ++++++++++----------- .../perf_event_v6.c => drivers/perf/arm_v6_pmu.c | 26 +--- .../perf_event_v7.c => drivers/perf/arm_v7_pmu.c | 90 +++++--------- .../perf/arm_xscale_pmu.c | 15 +-- include/kvm/arm_pmu.h | 8 +- include/linux/perf/arm_pmu.h | 10 +- include/linux/perf/arm_pmuv3.h | 7 +- 19 files changed, 289 insertions(+), 264 deletions(-) --- base-commit: 1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0 change-id: 20240607-arm-pmu-3-9-icntr-04375ddd0082 Best regards,