From mboxrd@z Thu Jan 1 00:00:00 1970 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 8C3AAEB64DC for ; Tue, 11 Jul 2023 08:26:05 +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:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=j2rDmtsblre8IppM8BKP6KOxn1F8SKvKuiOWQ7pOVvw=; b=waZxVbTqnV+erg 7BFEzAKoLRwIT1E//FkuJOKpfSXwUxEmmSMhs9RrjZrL0K3AWxWdWI1B+Qg/XT5c02bMOnzXTu9E2 NCo82SJckT5ekfbfhE74W48cTvO+bP7nxYzeAduzVv0QJSjJyTqEPs4VTwphUI5TS9tOBjhDQd6vd mcnv28jozmWYZLonMHCbktDBc+jtJykpNsLmhP/PhjWg+ogI1ae2qVDUQOlpoh7H/yHsJZM2CWG75 iZMGC3D6NmXBpNkU2d0MxsEX1Wkyp9tOwRKZ664ck2jnAc79bQz9FI3reUpRlOljTUEMvddbjpzjP cbitf1l15O975a+soozg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qJ8gm-00E6Br-28; Tue, 11 Jul 2023 08:25:40 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qJ8gg-00E68v-2B for linux-arm-kernel@lists.infradead.org; Tue, 11 Jul 2023 08:25:36 +0000 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 8DD5B2B; Tue, 11 Jul 2023 01:26:14 -0700 (PDT) Received: from a077893.arm.com (unknown [10.163.47.87]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 405B23F740; Tue, 11 Jul 2023 01:25:27 -0700 (PDT) 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 V13 - RESEND 04/10] arm64/perf: Add branch stack support in struct pmu_hw_events Date: Tue, 11 Jul 2023 13:54:49 +0530 Message-Id: <20230711082455.215983-5-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230711082455.215983-1-anshuman.khandual@arm.com> References: <20230711082455.215983-1-anshuman.khandual@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230711_012534_761757_B61B6965 X-CRM114-Status: GOOD ( 11.74 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This adds branch records buffer pointer in 'struct pmu_hw_events' which can be used to capture branch records during PMU interrupt. This percpu pointer here needs to be allocated first before usage. Cc: Catalin Marinas Cc: Will Deacon Cc: Mark Rutland Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Tested-by: James Clark Acked-by: Mark Rutland Signed-off-by: Anshuman Khandual --- include/linux/perf/arm_pmu.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/include/linux/perf/arm_pmu.h b/include/linux/perf/arm_pmu.h index 5ecd3d0e7645..2dd5bcd3080d 100644 --- a/include/linux/perf/arm_pmu.h +++ b/include/linux/perf/arm_pmu.h @@ -46,6 +46,13 @@ static_assert((PERF_EVENT_FLAG_ARCH & ARMPMU_EVT_63BIT) == ARMPMU_EVT_63BIT); }, \ } +#define MAX_BRANCH_RECORDS 64 + +struct branch_records { + struct perf_branch_stack branch_stack; + struct perf_branch_entry branch_entries[MAX_BRANCH_RECORDS]; +}; + /* The events for a given PMU register set. */ struct pmu_hw_events { /* @@ -72,6 +79,8 @@ struct pmu_hw_events { struct arm_pmu *percpu_pmu; int irq; + + struct branch_records *branches; }; enum armpmu_attr_groups { -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel