From nobody Thu Jan 1 08:57:44 2026 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 1399CC25B47 for ; Tue, 24 Oct 2023 22:27:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344547AbjJXW1x (ORCPT ); Tue, 24 Oct 2023 18:27:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60052 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344621AbjJXW1b (ORCPT ); Tue, 24 Oct 2023 18:27:31 -0400 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 B3A7C2123 for ; Tue, 24 Oct 2023 15:25:57 -0700 (PDT) Received: by mail-yw1-x114a.google.com with SMTP id 00721157ae682-5a824ef7a83so63952917b3.0 for ; Tue, 24 Oct 2023 15:25:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1698186356; x=1698791156; 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=zfK3LtQ16zflZ7X6ZyHLcdZIKlRk/T+4AhzfwFPXJCs=; b=RV9yKrDEYbXWbK14zY0h2vfn3sAT9COKGFiwGstrJyhnFT52zdLDk7d1OIuh8fQ09r 4iTla9UXEXP8WZcemGiFT5IVEyE7UIQDEZ9mT5KZoHs0Q3fASFL4HGkNvp9S8C6eHHmQ PufFX1ZstrOYfV/QK9EA02rpS8MwRMOeIUv+DoiOcNiNUihkchVYsOBz4LyKjBB8ouHj XcMB11cZNS8OaDVyfhSaWTUXd9oxowEAHsYZX7358tk93oaIQArrGpjiBKrgg38khrXo zhmXsgpBpwUHfNTt7ldI/ftSZ14RdPB49xp45OcO0BPOW2izuoPeed5re4146xn7IVK4 4Bdw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1698186356; x=1698791156; 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=zfK3LtQ16zflZ7X6ZyHLcdZIKlRk/T+4AhzfwFPXJCs=; b=LnHovuL+gIo8Y4yubY0fqyutU218PTCOhjHgiTqZ+6vc3tbw2yMTn0q/TVrUEIestm 2A5WDyZMC8BOMgNpS02/pWfX/swxghFCPkJ73j2ibeN6TZOzAaHRmz+qsiytSrvo/QCY h5wHWq5U0eJgvTBslMgyW/R0Z7jwefROJArsZ/h/j62wU0/IiZnsIrVFXSgYqvDmqaFB 6k9ds50ikj5EWFT1MN7yGb4h8PI0Tc5j+bKiRQQ0MO4BE1CSB8IP78Q4uWd0ulrUc3UY c/3mWex2pzNvxZkf7ySUujR9Oe120Qb2vCcGB+hXm5m+BdFTe7NVpP7OgMEkQBg3slt3 Apxw== X-Gm-Message-State: AOJu0YyrKVnCo+8MaATbJGByY6+RLNM48talGjFSZRyvxM+TXgwKvOq7 /eVQI8TI1mZnZIUPq/8Y56I900oqjrBD X-Google-Smtp-Source: AGHT+IHGXje9BDeZPOvd5i71tq0IbrD/zV6Ek3mx4AYL0h8PkBRbfQumtNUsi3WNuJ8dWenMdnfvd0U1Gz9e X-Received: from irogers.svl.corp.google.com ([2620:15c:2a3:200:93d2:18cc:4d63:45ba]) (user=irogers job=sendgmr) by 2002:a05:6902:1083:b0:d9a:47ea:69a5 with SMTP id v3-20020a056902108300b00d9a47ea69a5mr366432ybu.1.1698186356515; Tue, 24 Oct 2023 15:25:56 -0700 (PDT) Date: Tue, 24 Oct 2023 15:23:49 -0700 In-Reply-To: <20231024222353.3024098-1-irogers@google.com> Message-Id: <20231024222353.3024098-47-irogers@google.com> Mime-Version: 1.0 References: <20231024222353.3024098-1-irogers@google.com> X-Mailer: git-send-email 2.42.0.758.gaed0368e0e-goog Subject: [PATCH v3 46/50] perf trace: Ignore thread hashing in summary 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 , Leo Yan , Song Liu , Sandipan Das , James Clark , Anshuman Khandual , Miguel Ojeda , Liam Howlett , Yang Jihong , Athira Rajeev , Kajol Jain , K Prateek Nayak , Sean Christopherson , Yanteng Si , Ravi Bangoria , German Gomez , Changbin Du , Paolo Bonzini , Masami Hiramatsu , liuwenyu , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Commit 91e467bc568f ("perf machine: Use hashtable for machine threads") made the iteration of thread tids unordered. The perf trace --summary output sorts and prints each hash bucket, rather than all threads globally. Change this behavior by turn all threads into a list, sort the list by number of trace events then by tids, finally print the list. This also allows the rbtree in threads to be not accessed outside of machine. Signed-off-by: Ian Rogers --- tools/perf/builtin-trace.c | 41 +++++++++++++++++++++---------------- tools/perf/util/rb_resort.h | 5 ----- 2 files changed, 23 insertions(+), 23 deletions(-) diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index e541d0e2777a..e9ff78b331fe 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -74,6 +74,7 @@ #include #include #include +#include #include #include #include @@ -4314,34 +4315,38 @@ static unsigned long thread__nr_events(struct threa= d_trace *ttrace) return ttrace ? ttrace->nr_events : 0; } =20 -DEFINE_RESORT_RB(threads, - (thread__nr_events(thread__priv(a->thread)) < - thread__nr_events(thread__priv(b->thread))), - struct thread *thread; -) +static int trace_nr_events_cmp(void *priv __maybe_unused, + const struct list_head *la, + const struct list_head *lb) { - entry->thread =3D rb_entry(nd, struct thread_rb_node, rb_node)->thread; + struct thread_list *a =3D list_entry(la, struct thread_list, list); + struct thread_list *b =3D list_entry(lb, struct thread_list, list); + unsigned long a_nr_events =3D thread__nr_events(thread__priv(a->thread)); + unsigned long b_nr_events =3D thread__nr_events(thread__priv(b->thread)); + + if (a_nr_events !=3D b_nr_events) + return a_nr_events < b_nr_events ? -1 : 1; + + /* Identical number of threads, place smaller tids first. */ + return thread__tid(a->thread) < thread__tid(b->thread) + ? -1 + : (thread__tid(a->thread) > thread__tid(b->thread) ? 1 : 0); } =20 static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp) { size_t printed =3D trace__fprintf_threads_header(fp); - struct rb_node *nd; - int i; - - for (i =3D 0; i < THREADS__TABLE_SIZE; i++) { - DECLARE_RESORT_RB_MACHINE_THREADS(threads, trace->host, i); + LIST_HEAD(threads); =20 - if (threads =3D=3D NULL) { - fprintf(fp, "%s", "Error sorting output by nr_events!\n"); - return 0; - } + if (machine__thread_list(trace->host, &threads) =3D=3D 0) { + struct thread_list *pos; =20 - resort_rb__for_each_entry(nd, threads) - printed +=3D trace__fprintf_thread(fp, threads_entry->thread, trace); + list_sort(NULL, &threads, trace_nr_events_cmp); =20 - resort_rb__delete(threads); + list_for_each_entry(pos, &threads, list) + printed +=3D trace__fprintf_thread(fp, pos->thread, trace); } + thread_list__delete(&threads); return printed; } =20 diff --git a/tools/perf/util/rb_resort.h b/tools/perf/util/rb_resort.h index 376e86cb4c3c..d927a0d25052 100644 --- a/tools/perf/util/rb_resort.h +++ b/tools/perf/util/rb_resort.h @@ -143,9 +143,4 @@ struct __name##_sorted *__name =3D __name##_sorted__new DECLARE_RESORT_RB(__name)(&__ilist->rblist.entries.rb_root, \ __ilist->rblist.nr_entries) =20 -/* For 'struct machine->threads' */ -#define DECLARE_RESORT_RB_MACHINE_THREADS(__name, __machine, hash_bucket) = \ - DECLARE_RESORT_RB(__name)(&__machine->threads[hash_bucket].entries.rb_roo= t, \ - __machine->threads[hash_bucket].nr) - #endif /* _PERF_RESORT_RB_H_ */ --=20 2.42.0.758.gaed0368e0e-goog