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=-16.4 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT, USER_IN_DEF_DKIM_WL autolearn=ham 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 9DE6BC432C3 for ; Thu, 14 Nov 2019 00:30:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9C73C206E6 for ; Thu, 14 Nov 2019 00:30:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="h4mMEIaY" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726473AbfKNAat (ORCPT ); Wed, 13 Nov 2019 19:30:49 -0500 Received: from mail-pg1-f202.google.com ([209.85.215.202]:40552 "EHLO mail-pg1-f202.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726195AbfKNAas (ORCPT ); Wed, 13 Nov 2019 19:30:48 -0500 Received: by mail-pg1-f202.google.com with SMTP id q1so3162280pgl.7 for ; Wed, 13 Nov 2019 16:30:47 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:message-id:mime-version:subject:from:to:cc; bh=VnJePqFNQKWZpRIOr4e8YrOk73ffsduTxdMikg1QHq0=; b=h4mMEIaYy+DDwd11rkZOUYKmBgU+lTA/0yfezvdMukeApN8KOP2qGRfMFmcocejBic 3GiMMx8KQudLKHMaIj6w/putbaGP6INYEG9FNJKS+VjUAWX9g+VBAl27NONtqF38Mc5/ cfe4mkvs0ckObKg80YhUWq0mglWVBxjsI79FzorKhI41TZXui/9c+Yn9riwr2AxWJqF6 htVfc0B+gQQ+8f9SGU1FQYnXtUnxapG/PquCfdQHA9go00fS0quZGDIb/XskznruxYO3 n6Q5k9wpbLdekBhwB8zzYXrX0TywNsy+5RaGqFZkF8AHWvEW0Ya0Fsm1fiWcjn/aCCpx UYFQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc; bh=VnJePqFNQKWZpRIOr4e8YrOk73ffsduTxdMikg1QHq0=; b=rI9q4p7OUAIn0F917MrBdc/NYoJeh/8dn1nnlTqolhiOwfBEmI017Afa3XCvc7mz+1 pSmCvd+0JSmwyjReRzNM8wnOVk6KLQ8FQtff9cU3F6kgb0edS5lySNCNqNykwFFrr0Ua 7goS/k/K8JyrB8NRfY07me6h0E9xOyg2rmChU6J9jjbpueDH/lJVyCVuVca33BT8nEGD FcQkh+YukEqh4SAfgqa4m0wAsZtXp9yuIYv9ooLjOlm7MZv7hGOdvvF4bjIU5bDVCFFz wZXlnYYQEc6I/BZBhxgqgPQ/ERuGH/N0Du77xsdUCdGKkLK7FpR1JDLhMi44kSBcqst2 hYIw== X-Gm-Message-State: APjAAAXOUhAgEwztZkDUycDXJ/fopFXRN2BrQc7FbOydTzSwoEZ0ZtCf UDGOImMEi885FMB1/yErb4m/HnbTSfIQ X-Google-Smtp-Source: APXvYqwopzHcKvKHJ8hz00r9XQFx2UnaKQyo1LSYRdDeM8hNquvKqTNShGDFGl4vbR1t38V2ozW7qCgviUG3 X-Received: by 2002:a63:b22:: with SMTP id 34mr6890849pgl.90.1573691446181; Wed, 13 Nov 2019 16:30:46 -0800 (PST) Date: Wed, 13 Nov 2019 16:30:32 -0800 Message-Id: <20191114003042.85252-1-irogers@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.24.0.432.g9d3f5f5b63-goog Subject: [PATCH v3 00/10] Optimize cgroup context switch From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Andrew Morton , Masahiro Yamada , Kees Cook , Catalin Marinas , Petr Mladek , Mauro Carvalho Chehab , Qian Cai , Joe Lawrence , Tetsuo Handa , Sri Krishna chowdary , "Uladzislau Rezki (Sony)" , Andy Shevchenko , Changbin Du , Ard Biesheuvel , "David S. Miller" , Kent Overstreet , Gary Hook , Arnd Bergmann , Kan Liang , linux-kernel@vger.kernel.org Cc: Stephane Eranian , Andi Kleen , Ian Rogers Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Avoid iterating over all per-CPU events during cgroup changing context switches by organizing events by cgroup. To make an efficient set of iterators, introduce a min max heap utility with test. These patches include a caching algorithm to improve the search for the first event in a group by Kan Liang as well as rebasing hit "optimize event_filter_match during sched_in" from https://lkml.org/lkml/2019/8/7/771. The v2 patch set was modified by Peter Zijlstra in his perf/cgroup branch: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git These patches follow Peter's reorganization and his fixes to the perf_cpu_context min_heap storage code. Ian Rogers (8): lib: introduce generic min max heap perf: Use min_max_heap in visit_groups_merge perf: Add per perf_cpu_context min_heap storage perf/cgroup: Grow per perf_cpu_context heap storage perf/cgroup: Order events in RB tree by cgroup id perf: simplify and rename visit_groups_merge perf: cache perf_event_groups_first for cgroups perf: optimize event_filter_match during sched_in Kan Liang (1): perf/cgroup: Do not switch system-wide events in cgroup switch Peter Zijlstra (1): perf/cgroup: Reorder perf_cgroup_connect() include/linux/min_max_heap.h | 134 +++++++++ include/linux/perf_event.h | 14 + kernel/events/core.c | 512 ++++++++++++++++++++++++++++------- lib/Kconfig.debug | 10 + lib/Makefile | 1 + lib/test_min_max_heap.c | 194 +++++++++++++ 6 files changed, 769 insertions(+), 96 deletions(-) create mode 100644 include/linux/min_max_heap.h create mode 100644 lib/test_min_max_heap.c -- 2.24.0.432.g9d3f5f5b63-goog