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 X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DCBF0C43214 for ; Thu, 26 Aug 2021 15:36:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BF16E60F4A for ; Thu, 26 Aug 2021 15:36:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242988AbhHZPgv (ORCPT ); Thu, 26 Aug 2021 11:36:51 -0400 Received: from mga05.intel.com ([192.55.52.43]:41889 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232350AbhHZPgt (ORCPT ); Thu, 26 Aug 2021 11:36:49 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10088"; a="303345468" X-IronPort-AV: E=Sophos;i="5.84,353,1620716400"; d="scan'208";a="303345468" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Aug 2021 08:36:01 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.84,353,1620716400"; d="scan'208";a="426824678" Received: from otc-lr-04.jf.intel.com ([10.54.39.41]) by orsmga003.jf.intel.com with ESMTP; 26 Aug 2021 08:36:00 -0700 From: kan.liang@linux.intel.com To: peterz@infradead.org, mingo@kernel.org, linux-kernel@vger.kernel.org Cc: eranian@google.com, ak@linux.intel.com, Kan Liang , stable@vger.kernel.org Subject: [PATCH 1/7] perf/x86/intel/uncore: Support extra IMC channel on Ice Lake server Date: Thu, 26 Aug 2021 08:32:37 -0700 Message-Id: <1629991963-102621-2-git-send-email-kan.liang@linux.intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1629991963-102621-1-git-send-email-kan.liang@linux.intel.com> References: <1629991963-102621-1-git-send-email-kan.liang@linux.intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Kan Liang There are three channels on a Ice Lake server, but only two channels will ever be active. Current perf only enables two channels. Support the extra IMC channel, which may be activated on some Ice Lake machines. For a non-activated channel, the SW can still access it. The write will be ignored by the HW. 0 is always returned for the reading. Fixes: 2b3b76b5ec67 ("perf/x86/intel/uncore: Add Ice Lake server uncore support") Reviewed-by: Andi Kleen Signed-off-by: Kan Liang Cc: stable@vger.kernel.org --- The patch is a RESEND patch. The original post can be found at https://lore.kernel.org/lkml/1625766302-18875-1-git-send-email-kan.liang@linux.intel.com arch/x86/events/intel/uncore_snbep.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/antler/uncore_snbep.c index 9a178a9..72a4181 100644 --- a/arch/x86/events/intel/uncore_snbep.c +++ b/arch/x86/events/intel/uncore_snbep.c @@ -452,7 +452,7 @@ #define ICX_M3UPI_PCI_PMON_BOX_CTL 0xa0 /* ICX IMC */ -#define ICX_NUMBER_IMC_CHN 2 +#define ICX_NUMBER_IMC_CHN 3 #define ICX_IMC_MEM_STRIDE 0x4 /* SPR */ @@ -5458,7 +5458,7 @@ static struct intel_uncore_ops icx_uncore_mmio_ops = { static struct intel_uncore_type icx_uncore_imc = { .name = "imc", .num_counters = 4, - .num_boxes = 8, + .num_boxes = 12, .perf_ctr_bits = 48, .fixed_ctr_bits = 48, .fixed_ctr = SNR_IMC_MMIO_PMON_FIXED_CTR, -- 2.7.4