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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E65BFC433F5 for ; Thu, 24 Mar 2022 18:34:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345326AbiCXSfb (ORCPT ); Thu, 24 Mar 2022 14:35:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48718 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1352687AbiCXSfa (ORCPT ); Thu, 24 Mar 2022 14:35:30 -0400 Received: from smtp-fw-6002.amazon.com (smtp-fw-6002.amazon.com [52.95.49.90]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 72D233467B; Thu, 24 Mar 2022 11:33:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1648146838; x=1679682838; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=8YIluzwYSUomOcH0PCqAsR3TehTTHIumqCtmL6dHCMg=; b=Go45o7bK/Ni3uVoSgPG2t0Ctej1eCTYEk4Q8gSm6Tc9B64XMJclsdn6z iVEh1DHOZ263RD35RnzSi7iHEqJv2KgEJe77Qc9sd7WMIGTNR3eztL+Ci KcGZE+tA/x6lagfznJzw0oa6qWACT0XH/zQge1+Wwk6Ixr2Men8q29OBg 0=; X-IronPort-AV: E=Sophos;i="5.90,208,1643673600"; d="scan'208";a="187546947" Received: from iad12-co-svc-p1-lb1-vlan2.amazon.com (HELO email-inbound-relay-iad-1e-8be8ed69.us-east-1.amazon.com) ([10.43.8.2]) by smtp-border-fw-6002.iad6.amazon.com with ESMTP; 24 Mar 2022 18:33:56 +0000 Received: from EX13MTAUWC001.ant.amazon.com (iad12-ws-svc-p26-lb9-vlan3.iad.amazon.com [10.40.163.38]) by email-inbound-relay-iad-1e-8be8ed69.us-east-1.amazon.com (Postfix) with ESMTPS id C839EC091C; Thu, 24 Mar 2022 18:33:50 +0000 (UTC) Received: from EX13D02UWC001.ant.amazon.com (10.43.162.243) by EX13MTAUWC001.ant.amazon.com (10.43.162.135) with Microsoft SMTP Server (TLS) id 15.0.1497.32; Thu, 24 Mar 2022 18:33:40 +0000 Received: from EX13MTAUEE002.ant.amazon.com (10.43.62.24) by EX13D02UWC001.ant.amazon.com (10.43.162.243) with Microsoft SMTP Server (TLS) id 15.0.1497.32; Thu, 24 Mar 2022 18:33:39 +0000 Received: from dev-dsk-alisaidi-1d-b9a0e636.us-east-1.amazon.com (172.19.181.128) by mail-relay.amazon.com (10.43.62.224) with Microsoft SMTP Server id 15.0.1497.32 via Frontend Transport; Thu, 24 Mar 2022 18:33:38 +0000 Received: by dev-dsk-alisaidi-1d-b9a0e636.us-east-1.amazon.com (Postfix, from userid 5131138) id 15E9C2573; Thu, 24 Mar 2022 18:33:39 +0000 (UTC) From: Ali Saidi To: , , , , , CC: , , , , , , , , , , , , , , , Subject: [PATCH v4 4/4] perf mem: Support HITM for when mem_lvl_num is any Date: Thu, 24 Mar 2022 18:33:23 +0000 Message-ID: <20220324183323.31414-5-alisaidi@amazon.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220324183323.31414-1-alisaidi@amazon.com> References: <20220324183323.31414-1-alisaidi@amazon.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-perf-users@vger.kernel.org For loads that hit in a the LLC snoop filter and are fulfilled from a higher level cache on arm64 Neoverse cores, it's not usually clear what the true level of the cache the data came from (i.e. a transfer from a core could come from it's L1 or L2). Instead of making an assumption of where the line came from, add support for incrementing HITM if the source is CACHE_ANY. Since other architectures don't seem to populate the mem_lvl_num field here there shouldn't be a change in functionality. Signed-off-by: Ali Saidi Tested-by: German Gomez Reviewed-by: German Gomez --- tools/perf/util/mem-events.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/tools/perf/util/mem-events.c b/tools/perf/util/mem-events.c index e5e405185498..084977cfebef 100644 --- a/tools/perf/util/mem-events.c +++ b/tools/perf/util/mem-events.c @@ -539,6 +539,15 @@ do { \ stats->ld_llchit++; } + /* + * A hit in another cores cache must mean a llc snoop + * filter hit + */ + if (lnum == P(LVLNUM, ANY_CACHE)) { + if (snoop & P(SNOOP, HITM)) + HITM_INC(lcl_hitm); + } + if (lvl & P(LVL, LOC_RAM) || lnum == P(LVLNUM, RAM)) { stats->lcl_dram++; if (snoop & P(SNOOP, HIT)) -- 2.32.0