From patchwork Fri Mar 18 19:59:11 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ali Saidi X-Patchwork-Id: 12785875 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 5FC93C433F5 for ; Fri, 18 Mar 2022 20:01:18 +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=hXw5Gep9zmaE7i5uxE+mzP2bpcpvNqnFTwG423mSm8U=; b=IM1yZBgQDzBGRb pOWVw50kfPN46+1h17SyQZj8J2G0OlHzq+3yoYT/CuVFA6w81sfNi7eFQVPQIFhSPuBHmqFh2aG8t QCRuirzTwkQ5KAz56THGF/bOY68cXU4nUMW24DOGKtnbLNkMleHXbdYgHhVIdEto3T2HziQVW2NCd 19RmbPVGdqCtb5S7/aP0TcmDEmqIVX5e6obQPICDzSsLUP5fCTfJ4RrE7ZAxcr581ieZ1k0XoQDIe l2JtNQx79G30mw6dmn3bR3rk/nR1uOz242A6XMlCam25w6/hJhF/1wCHmu3JnRa3x8GeI5mXARxgF D+s0ErmD/PLwSPAWcseQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nVIld-002jm2-70; Fri, 18 Mar 2022 20:00:09 +0000 Received: from smtp-fw-80007.amazon.com ([99.78.197.218]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nVIl1-002jYA-Dz for linux-arm-kernel@lists.infradead.org; Fri, 18 Mar 2022 19:59:35 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1647633571; x=1679169571; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=gOE+wFy3wrmELM7xqdd6P7H7txS9rRmT5Kfdc2TWyBM=; b=tPPUNn7N1AyeaM4qquiSEbiaWY7G6ueKuUvQkj/M12K+n7ROBqHkg02C Mu98KjGAX3iwzhWUhQq/c9+ZV7my5YfqIA6rSMpBBo2ruCRn++XzNSNVA DWifrTiKflT6C+FaI8A4ASiSVWoKg9SWjNN19myOdgdOldG0n9q9U92yJ U=; X-IronPort-AV: E=Sophos;i="5.90,192,1643673600"; d="scan'208";a="72190540" Received: from pdx4-co-svc-p1-lb2-vlan2.amazon.com (HELO email-inbound-relay-pdx-2a-e6c05252.us-west-2.amazon.com) ([10.25.36.210]) by smtp-border-fw-80007.pdx80.corp.amazon.com with ESMTP; 18 Mar 2022 19:59:29 +0000 Received: from EX13MTAUWB001.ant.amazon.com (pdx1-ws-svc-p6-lb9-vlan2.pdx.amazon.com [10.236.137.194]) by email-inbound-relay-pdx-2a-e6c05252.us-west-2.amazon.com (Postfix) with ESMTPS id 015CC4200E; Fri, 18 Mar 2022 19:59:29 +0000 (UTC) Received: from EX13D02UWC002.ant.amazon.com (10.43.162.6) by EX13MTAUWB001.ant.amazon.com (10.43.161.207) with Microsoft SMTP Server (TLS) id 15.0.1497.32; Fri, 18 Mar 2022 19:59:27 +0000 Received: from EX13MTAUEA001.ant.amazon.com (10.43.61.82) by EX13D02UWC002.ant.amazon.com (10.43.162.6) with Microsoft SMTP Server (TLS) id 15.0.1497.32; Fri, 18 Mar 2022 19:59:27 +0000 Received: from dev-dsk-alisaidi-1d-b9a0e636.us-east-1.amazon.com (172.19.181.128) by mail-relay.amazon.com (10.43.61.243) with Microsoft SMTP Server id 15.0.1497.32 via Frontend Transport; Fri, 18 Mar 2022 19:59:26 +0000 Received: by dev-dsk-alisaidi-1d-b9a0e636.us-east-1.amazon.com (Postfix, from userid 5131138) id 892D417B8; Fri, 18 Mar 2022 19:59:25 +0000 (UTC) From: Ali Saidi To: , , , , CC: , , , , , , , , , , , , , , , , Subject: [PATCH v3 1/3] perf arm-spe: Use SPE data source for neoverse cores Date: Fri, 18 Mar 2022 19:59:11 +0000 Message-ID: <20220318195913.17459-2-alisaidi@amazon.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220318195913.17459-1-alisaidi@amazon.com> References: <20220318195913.17459-1-alisaidi@amazon.com> MIME-Version: 1.0 Precedence: Bulk X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220318_125931_544050_6ACEA9B1 X-CRM114-Status: GOOD ( 23.81 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 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 When synthesizing data from SPE, augment the type with source information for Arm Neoverse cores. The field is IMPLDEF but the Neoverse cores all use the same encoding. I can't find encoding information for any other SPE implementations to unify their choices with Arm's thus that is left for future work. This change populates the mem_lvl_num for Neoverse cores instead of the deprecated mem_lvl namespace. Signed-off-by: Ali Saidi --- .../util/arm-spe-decoder/arm-spe-decoder.c | 1 + .../util/arm-spe-decoder/arm-spe-decoder.h | 12 ++ tools/perf/util/arm-spe.c | 109 +++++++++++++++--- 3 files changed, 108 insertions(+), 14 deletions(-) diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c index 5e390a1a79ab..091987dd3966 100644 --- a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c +++ b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c @@ -220,6 +220,7 @@ static int arm_spe_read_record(struct arm_spe_decoder *decoder) break; case ARM_SPE_DATA_SOURCE: + decoder->record.source = payload; break; case ARM_SPE_BAD: break; diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h index 69b31084d6be..c81bf90c0996 100644 --- a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h +++ b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h @@ -29,6 +29,17 @@ enum arm_spe_op_type { ARM_SPE_ST = 1 << 1, }; +enum arm_spe_neoverse_data_source { + ARM_SPE_NV_L1D = 0x0, + ARM_SPE_NV_L2 = 0x8, + ARM_SPE_NV_PEER_CORE = 0x9, + ARM_SPE_NV_LCL_CLSTR = 0xa, + ARM_SPE_NV_SYS_CACHE = 0xb, + ARM_SPE_NV_PEER_CLSTR = 0xc, + ARM_SPE_NV_REMOTE = 0xd, + ARM_SPE_NV_DRAM = 0xe, +}; + struct arm_spe_record { enum arm_spe_sample_type type; int err; @@ -40,6 +51,7 @@ struct arm_spe_record { u64 virt_addr; u64 phys_addr; u64 context_id; + u16 source; }; struct arm_spe_insn; diff --git a/tools/perf/util/arm-spe.c b/tools/perf/util/arm-spe.c index d2b64e3f588b..a45d638d2f06 100644 --- a/tools/perf/util/arm-spe.c +++ b/tools/perf/util/arm-spe.c @@ -34,6 +34,7 @@ #include "arm-spe-decoder/arm-spe-decoder.h" #include "arm-spe-decoder/arm-spe-pkt-decoder.h" +#include <../../../arch/arm64/include/asm/cputype.h> #define MAX_TIMESTAMP (~0ULL) struct arm_spe { @@ -45,6 +46,7 @@ struct arm_spe { struct perf_session *session; struct machine *machine; u32 pmu_type; + u64 midr; struct perf_tsc_conversion tc; @@ -399,33 +401,109 @@ static bool arm_spe__is_memory_event(enum arm_spe_sample_type type) return false; } -static u64 arm_spe__synth_data_source(const struct arm_spe_record *record) +static const struct midr_range neoverse_spe[] = { + MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N1), + MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N2), + {}, +}; + + +static void arm_spe__synth_data_source_neoverse(const struct arm_spe_record *record, + union perf_mem_data_src *data_src) { - union perf_mem_data_src data_src = { 0 }; + /* + * Even though four levels of cache hierarchy are possible, no known + * production Neoverse systems currently include more than three levels + * so for the time being we assume three exist. If a production system + * is built with four the this function would have to be changed to + * detect the number of levels for reporting. + */ - if (record->op == ARM_SPE_LD) - data_src.mem_op = PERF_MEM_OP_LOAD; - else - data_src.mem_op = PERF_MEM_OP_STORE; + switch (record->source) { + case ARM_SPE_NV_L1D: + data_src->mem_lvl = PERF_MEM_LVL_HIT; + data_src->mem_lvl_num = PERF_MEM_LVLNUM_L1; + break; + case ARM_SPE_NV_L2: + data_src->mem_lvl = PERF_MEM_LVL_HIT; + data_src->mem_lvl_num = PERF_MEM_LVLNUM_L2; + break; + case ARM_SPE_NV_PEER_CORE: + data_src->mem_lvl = PERF_MEM_LVL_HIT; + data_src->mem_snoop = PERF_MEM_SNOOP_HITM; + data_src->mem_lvl_num = PERF_MEM_LVLNUM_ANY_CACHE; + break; + /* + * We don't know if this is L1, L2 but we do know it was a cache-2-cache + * transfer, so set SNOOP_HITM + */ + case ARM_SPE_NV_LCL_CLSTR: + case ARM_SPE_NV_PEER_CLSTR: + data_src->mem_lvl = PERF_MEM_LVL_HIT; + data_src->mem_snoop = PERF_MEM_SNOOP_HITM; + data_src->mem_lvl_num = PERF_MEM_LVLNUM_ANY_CACHE; + break; + /* + * System cache is assumed to be L3 + */ + case ARM_SPE_NV_SYS_CACHE: + data_src->mem_lvl = PERF_MEM_LVL_HIT; + data_src->mem_lvl_num = PERF_MEM_LVLNUM_L3; + break; + /* + * We don't know what level it hit in, except it came from the other + * socket + */ + case ARM_SPE_NV_REMOTE: + data_src->mem_snoop = PERF_MEM_SNOOP_HITM; + data_src->mem_remote = PERF_MEM_REMOTE_REMOTE; + break; + case ARM_SPE_NV_DRAM: + data_src->mem_lvl = PERF_MEM_LVL_HIT; + data_src->mem_lvl_num = PERF_MEM_LVLNUM_RAM; + break; + default: + break; + } +} +static void arm_spe__synth_data_source_generic(const struct arm_spe_record *record, + union perf_mem_data_src *data_src) +{ if (record->type & (ARM_SPE_LLC_ACCESS | ARM_SPE_LLC_MISS)) { - data_src.mem_lvl = PERF_MEM_LVL_L3; + data_src->mem_lvl = PERF_MEM_LVL_L3; if (record->type & ARM_SPE_LLC_MISS) - data_src.mem_lvl |= PERF_MEM_LVL_MISS; + data_src->mem_lvl |= PERF_MEM_LVL_MISS; else - data_src.mem_lvl |= PERF_MEM_LVL_HIT; + data_src->mem_lvl |= PERF_MEM_LVL_HIT; } else if (record->type & (ARM_SPE_L1D_ACCESS | ARM_SPE_L1D_MISS)) { - data_src.mem_lvl = PERF_MEM_LVL_L1; + data_src->mem_lvl = PERF_MEM_LVL_L1; if (record->type & ARM_SPE_L1D_MISS) - data_src.mem_lvl |= PERF_MEM_LVL_MISS; + data_src->mem_lvl |= PERF_MEM_LVL_MISS; else - data_src.mem_lvl |= PERF_MEM_LVL_HIT; + data_src->mem_lvl |= PERF_MEM_LVL_HIT; } if (record->type & ARM_SPE_REMOTE_ACCESS) - data_src.mem_lvl |= PERF_MEM_LVL_REM_CCE1; + data_src->mem_lvl |= PERF_MEM_LVL_REM_CCE1; +} + +static u64 arm_spe__synth_data_source(const struct arm_spe_record *record, u64 midr) +{ + union perf_mem_data_src data_src = { 0 }; + bool is_neoverse = is_midr_in_range(midr, neoverse_spe); + + if (record->op & ARM_SPE_LD) + data_src.mem_op = PERF_MEM_OP_LOAD; + else + data_src.mem_op = PERF_MEM_OP_STORE; + + if (is_neoverse) + arm_spe__synth_data_source_neoverse(record, &data_src); + else + arm_spe__synth_data_source_generic(record, &data_src); if (record->type & (ARM_SPE_TLB_ACCESS | ARM_SPE_TLB_MISS)) { data_src.mem_dtlb = PERF_MEM_TLB_WK; @@ -446,7 +524,7 @@ static int arm_spe_sample(struct arm_spe_queue *speq) u64 data_src; int err; - data_src = arm_spe__synth_data_source(record); + data_src = arm_spe__synth_data_source(record, spe->midr); if (spe->sample_flc) { if (record->type & ARM_SPE_L1D_MISS) { @@ -1183,6 +1261,8 @@ int arm_spe_process_auxtrace_info(union perf_event *event, struct perf_record_auxtrace_info *auxtrace_info = &event->auxtrace_info; size_t min_sz = sizeof(u64) * ARM_SPE_AUXTRACE_PRIV_MAX; struct perf_record_time_conv *tc = &session->time_conv; + const char *cpuid = perf_env__cpuid(session->evlist->env); + u64 midr = strtol(cpuid, NULL, 16); struct arm_spe *spe; int err; @@ -1202,6 +1282,7 @@ int arm_spe_process_auxtrace_info(union perf_event *event, spe->machine = &session->machines.host; /* No kvm support */ spe->auxtrace_type = auxtrace_info->type; spe->pmu_type = auxtrace_info->priv[ARM_SPE_PMU_TYPE]; + spe->midr = midr; spe->timeless_decoding = arm_spe__is_timeless_decoding(spe);