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=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 24EE1C43381 for ; Wed, 27 Mar 2019 19:10:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E824C2064A for ; Wed, 27 Mar 2019 19:10:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1553713837; bh=dvqi3gM53sKvosRb9pDQfK47G29PyJ72LW5yUsVRe9I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=xTUNq0Le0+bp2C6m6WlOmIwIFSiYA7zhc8de3ubKsjEzXGP1YZUfSNpoVUVceghN6 FhV5cWHvorUZ6ZhWIs6891fI06N7mDTulUzY6iT3F0zNn5ZzXa7eqtsRrWiRj+VH/C yqVP2EC5ew1oT2U4BzKN7BQuQbw5VVU04WgEOudQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388954AbfC0SK7 (ORCPT ); Wed, 27 Mar 2019 14:10:59 -0400 Received: from mail.kernel.org ([198.145.29.99]:53104 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387729AbfC0SK4 (ORCPT ); Wed, 27 Mar 2019 14:10:56 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1F9D721741; Wed, 27 Mar 2019 18:10:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1553710255; bh=dvqi3gM53sKvosRb9pDQfK47G29PyJ72LW5yUsVRe9I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bWKjbDCN96VXDjMXoit6nYBZC9cTR87IL8R53PgOKVD3NBqSx9VyANg2+Fp7Bvj5e gPdUtoS5lpBcnbwXP6QhIw5ZhvKVzK9osj39tnW3Y1uEUelb8bDxSqDngS2ppZQL+3 GGhePmTj5KNHVD2fPoMIhqBvQ56UAHOEl4QvXhMs= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Jiri Olsa , Jiri Olsa , Alexander Shishkin , Andi Kleen , Jonas Rabenstein , Namhyung Kim , Peter Zijlstra , Arnaldo Carvalho de Melo , Sasha Levin Subject: [PATCH AUTOSEL 4.19 020/192] perf c2c: Fix c2c report for empty numa node Date: Wed, 27 Mar 2019 14:07:32 -0400 Message-Id: <20190327181025.13507-20-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190327181025.13507-1-sashal@kernel.org> References: <20190327181025.13507-1-sashal@kernel.org> MIME-Version: 1.0 X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jiri Olsa [ Upstream commit e34c940245437f36d2c492edd1f8237eff391064 ] Ravi Bangoria reported that we fail with an empty NUMA node with the following message: $ lscpu NUMA node0 CPU(s): NUMA node1 CPU(s): 0-4 $ sudo ./perf c2c report node/cpu topology bugFailed setup nodes Fix this by detecting the empty node and keeping its CPU set empty. Reported-by: Nageswara R Sastry Signed-off-by: Jiri Olsa Tested-by: Ravi Bangoria Cc: Alexander Shishkin Cc: Andi Kleen Cc: Jonas Rabenstein Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20190305152536.21035-2-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin --- tools/perf/builtin-c2c.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c index f3aa9d02a5ab..763c2edf52e7 100644 --- a/tools/perf/builtin-c2c.c +++ b/tools/perf/builtin-c2c.c @@ -2055,6 +2055,12 @@ static int setup_nodes(struct perf_session *session) if (!set) return -ENOMEM; + nodes[node] = set; + + /* empty node, skip */ + if (cpu_map__empty(map)) + continue; + for (cpu = 0; cpu < map->nr; cpu++) { set_bit(map->map[cpu], set); @@ -2063,8 +2069,6 @@ static int setup_nodes(struct perf_session *session) cpu2node[map->map[cpu]] = node; } - - nodes[node] = set; } setup_nodes_header(); -- 2.19.1