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 E1B59C433EF for ; Tue, 3 May 2022 04:18:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231142AbiECEWE (ORCPT ); Tue, 3 May 2022 00:22:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59114 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230526AbiECEVn (ORCPT ); Tue, 3 May 2022 00:21:43 -0400 Received: from mail-yw1-x1149.google.com (mail-yw1-x1149.google.com [IPv6:2607:f8b0:4864:20::1149]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 81FF13CA74 for ; Mon, 2 May 2022 21:18:12 -0700 (PDT) Received: by mail-yw1-x1149.google.com with SMTP id 00721157ae682-2f7ee6bc6ddso152082467b3.1 for ; Mon, 02 May 2022 21:18:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=qZYkK0QiKq2QKPszwBBc5ZNarCxrPY8dG8RgsS3qw5I=; b=fz9PewPyxjyTQCArVvRbymNYsWXATr1fj+gd6LaOOTRE5kG4bgI8Lf2sJ+gw0H38Wv /6tKf7w0KAU0cFq6Z8ZHgpfq57G0ENDBSTS2QnNY1FGoWVqNRKYiN2InHXvgYHuZmdXY R8+OtNyphACNsriRlxgKJJgY2acJJPQf7jlXveW8ycK1LfsjSBCtLM+pMBU7kS7mKu7x bmBf3wDsYFw+BVfNud9SoRSUH7GTOSFQg5MjRcLgpGA1psmuKLn/wiUdZwRmlLK+ap78 KJrIc2WDt5JJBcBvk3n48RiFgW7vGkEpJml7ltCRl6tUOst4RJGtMTPnvHmLj62p2APD aa0Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=qZYkK0QiKq2QKPszwBBc5ZNarCxrPY8dG8RgsS3qw5I=; b=iFZm+0ZGKQmKjMhFOsT6UPAns8LEE6Pueu6+Ntcq2YzThxGJf1ayfIeVINbBz61vQ1 hrFyLwMKv3AX8qwg8RhmE0Ri3KQhg3T46gu3oMEfXiDxwQ4sct5zi2ocxq2To2RlRGaW z6SEyPQelibFR1DUyvHN5IEbcuKh5mAMQS1P/k1YOYiBcl+jffAAU7bx2AmALZUCIW9J c2dbCRawaeRhCTHtWG11mWL9MBc4rRcrR116SQ0q/fsuUqqhuRDN/b7HO0VpBXJ1IXsq iFMMPcia5M75nep0aD6v0X/QKoCQY8+Tnp/Bvc+Xk01qreQCpf6cXgsPjDQwIe1L4et2 7+CA== X-Gm-Message-State: AOAM530+6gCKA7izTz6lRSxl+vh0SxgVy+JsgKAp5DhwfnESxeGLUSsB NOjTRuu+njNH6YlGm5moQ4dFjcKNywJu X-Google-Smtp-Source: ABdhPJx077Sx6pfDuCYkY9uKRPc4HO/I1fDmQkMxNFkxBO6TpMeXvcgzxUzF4eAREwfCmgFo6NmMk9+B9O/+ X-Received: from irogers.svl.corp.google.com ([2620:15c:2cd:202:dd4b:52bb:771d:7bb4]) (user=irogers job=sendgmr) by 2002:a81:1107:0:b0:2f7:cf9a:bd7 with SMTP id 7-20020a811107000000b002f7cf9a0bd7mr13980584ywr.482.1651551491508; Mon, 02 May 2022 21:18:11 -0700 (PDT) Date: Mon, 2 May 2022 21:17:55 -0700 In-Reply-To: <20220503041757.2365696-1-irogers@google.com> Message-Id: <20220503041757.2365696-5-irogers@google.com> Mime-Version: 1.0 References: <20220503041757.2365696-1-irogers@google.com> X-Mailer: git-send-email 2.36.0.464.gb9c8b46e94-goog Subject: [PATCH v5 4/6] perf cpumap: Handle dummy maps as empty in subset From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Mathieu Poirier , Suzuki K Poulose , Mike Leach , Leo Yan , John Garry , Will Deacon , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Kajol Jain , James Clark , German Gomez , Adrian Hunter , Riccardo Mancini , Andi Kleen , Alexey Bayduraev , Alexander Antonov , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Stephane Eranian , Ian Rogers Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org perf_cpu_map__empty is true for empty and dummy maps. Make is_subset respect that. Signed-off-by: Ian Rogers --- tools/lib/perf/cpumap.c | 4 ++-- tools/perf/tests/cpumap.c | 10 +++++++++- 2 files changed, 11 insertions(+), 3 deletions(-) diff --git a/tools/lib/perf/cpumap.c b/tools/lib/perf/cpumap.c index 384d5e076ee4..9c83675788c2 100644 --- a/tools/lib/perf/cpumap.c +++ b/tools/lib/perf/cpumap.c @@ -322,9 +322,9 @@ struct perf_cpu perf_cpu_map__max(struct perf_cpu_map *map) /** Is 'b' a subset of 'a'. */ bool perf_cpu_map__is_subset(const struct perf_cpu_map *a, const struct perf_cpu_map *b) { - if (a == b || !b) + if (a == b || perf_cpu_map__empty(b)) return true; - if (!a || b->nr > a->nr) + if (perf_cpu_map__empty(a) || b->nr > a->nr) return false; for (int i = 0, j = 0; i < a->nr; i++) { diff --git a/tools/perf/tests/cpumap.c b/tools/perf/tests/cpumap.c index f94929ebb54b..d52b58395385 100644 --- a/tools/perf/tests/cpumap.c +++ b/tools/perf/tests/cpumap.c @@ -128,13 +128,21 @@ static int test__cpu_map_merge(struct test_suite *test __maybe_unused, int subte struct perf_cpu_map *a = perf_cpu_map__new("4,2,1"); struct perf_cpu_map *b = perf_cpu_map__new("4,5,7"); struct perf_cpu_map *c = perf_cpu_map__merge(a, b); + struct perf_cpu_map *d = perf_cpu_map__dummy_new(); + struct perf_cpu_map *e = perf_cpu_map__merge(b, d); char buf[100]; TEST_ASSERT_VAL("failed to merge map: bad nr", perf_cpu_map__nr(c) == 5); cpu_map__snprint(c, buf, sizeof(buf)); TEST_ASSERT_VAL("failed to merge map: bad result", !strcmp(buf, "1-2,4-5,7")); - perf_cpu_map__put(b); + + TEST_ASSERT_VAL("failed to merge map: bad nr", perf_cpu_map__nr(e) == 3); + cpu_map__snprint(e, buf, sizeof(buf)); + TEST_ASSERT_VAL("failed to merge map: bad result", !strcmp(buf, "4-5,7")); + perf_cpu_map__put(c); + perf_cpu_map__put(d); + perf_cpu_map__put(e); return 0; } -- 2.36.0.464.gb9c8b46e94-goog