From nobody Wed Dec 17 12:46:24 2025 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 2F936C4167B for ; Mon, 27 Nov 2023 22:13:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233855AbjK0WNh (ORCPT ); Mon, 27 Nov 2023 17:13:37 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39336 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233989AbjK0WMm (ORCPT ); Mon, 27 Nov 2023 17:12:42 -0500 Received: from mail-yw1-x114a.google.com (mail-yw1-x114a.google.com [IPv6:2607:f8b0:4864:20::114a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B9FDD30D0 for ; Mon, 27 Nov 2023 14:10:42 -0800 (PST) Received: by mail-yw1-x114a.google.com with SMTP id 00721157ae682-5d032ab478fso22191407b3.0 for ; Mon, 27 Nov 2023 14:10:42 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1701123042; x=1701727842; darn=vger.kernel.org; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=DE11asDQk9rpQtwkVS6wVBngrVh7woxSSqgHs8uGQL0=; b=Szaeqf7V1DZHccV6SqWWH+R5bYAinpW4i6wG8xdUriunnpMJchdnjappz1wzO/gVNw USFAl6eawT7IufaTcAXvdR6/VYFBvd9mG+62df61ZjxtL8TXTsdy8jknviYFc8hm6ucs Wbh/6S9Vyg3GvWmyuVgZkemoHEJdb1KUEv3X7nTBBv2GP9/ZzXt31PnNN9J+oI6L9qaX O/Exx/U7BzxkvUOBxPD5el+mHS5dfJGcnGRYVirFbtYbGEtg/wDqdWwN9+HaX9X+0o9N sF7GI9+PLoEoX4ETJO6TkZ0a2v1gdEVtxEWh0yjgpdiKq6R5/0K34CKi4XyoaI3ofKvw p7lw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701123042; x=1701727842; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=DE11asDQk9rpQtwkVS6wVBngrVh7woxSSqgHs8uGQL0=; b=xVP73KXP/iOxfl93QZs7ZQwxUlk6c1sQM5ioRyov6pYNlPPWkx2mQa+XpTkWPZ135/ BkVp1M3u5B7vjx5P0MMoswFJrEiioFFOqoYP8d4pHMrUkyLvG86Osg+951FgReDhs/4u qWpx+WhWMVaQMuLP4lfuQMmoJz2Hi0dpmDt7sGt4uRkGnb8bTX8vC+A/ZhPrLsZb0UQF rnOpfXd6/gYC7sySCUrOncbQ3tizFVhbnEUtLvOAeNPHNFXfC/h6rKuII9ti351jrC+g ZTcMC0KVpCCbY8lIGBtpvxOZnUFv9kwsFCkOdjRaqoAcxFcFnS4c2FLrtFmfdO3kdzGj cAkQ== X-Gm-Message-State: AOJu0YwurZouJCGZlExR4j6WOhnhNbJQNvYJ0uIZvk9A5nT/81btIKIQ UUiWBXJoMITHI9ZLSFNJ8iclV6fY45no X-Google-Smtp-Source: AGHT+IHlITfnNPP+/L7AdbTIswUbhcXwOz3GRRC5Dq8W6iiq8U7J/jYVIJnKRL1n8tWQKDpyAPrrcJzeIAGm X-Received: from irogers.svl.corp.google.com ([2620:15c:2a3:200:829:6e77:9093:f39b]) (user=irogers job=sendgmr) by 2002:a05:690c:ec5:b0:5ca:321f:a368 with SMTP id cs5-20020a05690c0ec500b005ca321fa368mr517772ywb.7.1701123041929; Mon, 27 Nov 2023 14:10:41 -0800 (PST) Date: Mon, 27 Nov 2023 14:08:46 -0800 In-Reply-To: <20231127220902.1315692-1-irogers@google.com> Message-Id: <20231127220902.1315692-35-irogers@google.com> Mime-Version: 1.0 References: <20231127220902.1315692-1-irogers@google.com> X-Mailer: git-send-email 2.43.0.rc1.413.gea7ed67945-goog Subject: [PATCH v5 34/50] perf machine: Move fprintf to for_each loop and a callback From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Ian Rogers , Adrian Hunter , Nick Terrell , Kan Liang , Andi Kleen , Kajol Jain , Athira Rajeev , Huacai Chen , Masami Hiramatsu , Vincent Whitchurch , "Steinar H. Gunderson" , Liam Howlett , Miguel Ojeda , Colin Ian King , Dmitrii Dolgov <9erthalion6@gmail.com>, Yang Jihong , Ming Wang , James Clark , K Prateek Nayak , Sean Christopherson , Leo Yan , Ravi Bangoria , German Gomez , Changbin Du , Paolo Bonzini , Li Dong , Sandipan Das , liuwenyu , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Guilherme Amadio Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Avoid exposing the threads data structure by switching to the callback machine__for_each_thread approach. machine__fprintf is only used in tests and verbose >3 output so don't turn to list and sort. Add machine__threads_nr to be refactored later. Note, all existing *_fprintf routines ignore fprintf errors. Signed-off-by: Ian Rogers --- tools/perf/util/machine.c | 43 ++++++++++++++++++++++++--------------- 1 file changed, 27 insertions(+), 16 deletions(-) diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c index 6d7a505850c8..7e19303d1aa6 100644 --- a/tools/perf/util/machine.c +++ b/tools/perf/util/machine.c @@ -1114,29 +1114,40 @@ size_t machine__fprintf_vmlinux_path(struct machine= *machine, FILE *fp) return printed; } =20 -size_t machine__fprintf(struct machine *machine, FILE *fp) +struct machine_fprintf_cb_args { + FILE *fp; + size_t printed; +}; + +static int machine_fprintf_cb(struct thread *thread, void *data) { - struct rb_node *nd; - size_t ret; - int i; + struct machine_fprintf_cb_args *args =3D data; =20 - for (i =3D 0; i < THREADS__TABLE_SIZE; i++) { - struct threads *threads =3D &machine->threads[i]; + /* TODO: handle fprintf errors. */ + args->printed +=3D thread__fprintf(thread, args->fp); + return 0; +} =20 - down_read(&threads->lock); +static size_t machine__threads_nr(const struct machine *machine) +{ + size_t nr =3D 0; =20 - ret =3D fprintf(fp, "Threads: %u\n", threads->nr); + for (int i =3D 0; i < THREADS__TABLE_SIZE; i++) + nr +=3D machine->threads[i].nr; =20 - for (nd =3D rb_first_cached(&threads->entries); nd; - nd =3D rb_next(nd)) { - struct thread *pos =3D rb_entry(nd, struct thread_rb_node, rb_node)->th= read; + return nr; +} =20 - ret +=3D thread__fprintf(pos, fp); - } +size_t machine__fprintf(struct machine *machine, FILE *fp) +{ + struct machine_fprintf_cb_args args =3D { + .fp =3D fp, + .printed =3D 0, + }; + size_t ret =3D fprintf(fp, "Threads: %zu\n", machine__threads_nr(machine)= ); =20 - up_read(&threads->lock); - } - return ret; + machine__for_each_thread(machine, machine_fprintf_cb, &args); + return ret + args.printed; } =20 static struct dso *machine__get_kernel(struct machine *machine) --=20 2.43.0.rc1.413.gea7ed67945-goog