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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 3910EC433B4 for ; Thu, 22 Apr 2021 20:02:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 03A7C613ED for ; Thu, 22 Apr 2021 20:02:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239334AbhDVUDa (ORCPT ); Thu, 22 Apr 2021 16:03:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54142 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239079AbhDVUDW (ORCPT ); Thu, 22 Apr 2021 16:03:22 -0400 Received: from mail-ej1-x631.google.com (mail-ej1-x631.google.com [IPv6:2a00:1450:4864:20::631]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 44BD6C06174A for ; Thu, 22 Apr 2021 13:02:46 -0700 (PDT) Received: by mail-ej1-x631.google.com with SMTP id u21so70638421ejo.13 for ; Thu, 22 Apr 2021 13:02:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=fkWnCgvlzZOc7GDuxDqpwiNvgd9/wmq2P41XHrZMyMk=; b=BeFgRFPrZjtYaNpmQTOvHrWqWMrcTyxoPbL3+vzXzWfM6Kt0dK6dWA4+h+qrit1K+c 1dcLGroBeVhIZx2s4RGo6VLCPrRJIr4kcs+eOnEpW38uFsJX8WSyfIYykumSRx3t7jgl i1CqNsDWxuc0uNO+rIkq8+2ZKp3q3l9sq8cHIGDv4KPkJzx04QVSvT41/y2YT8cN/4C3 KCklccRnxsZUMu2UwrM3P/R6rw7fsXWiuHzLoikpf3SkBTBnoAOm9KvY8PFIfyKUVXKa 9UZ+kh7qISf3HH7bcZHDyyydB4i8qS3IYTh29bk7VpYvGlXLeehuOPiT8PyG8S3OtcDN CFBA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=fkWnCgvlzZOc7GDuxDqpwiNvgd9/wmq2P41XHrZMyMk=; b=ojMLniErMmmml5nR0MnqWebaSKmFGCuw1aO2Xo2cfU7alF6D0SEN0MRbA5A2Gr+7m0 uxWoUfwGtjkHY6JT/aRIKST+p3GNEJVorAxPq6XY00OxGB7whw0nKBNl2NF0YLgL65MO bfKXDZwV8ZrmKtQG8xZ5PGk+gOYxau9I9Mn5D7zWlDMJMftfTuaZlAWp6hLFhxiZZc7E pSF/gxWEQn7q+98huAn6M2Re8QAb9Rmnok7y2yAwIz70Pf5ywAu7HF0UNJKBz+Xt7/C9 YWiLM53mBho/4EchWLOxLHatZe/HrlAPh4FFgVFTGDPP2uoRtsuNHqKUFsHkO5aNvqbE cQPg== X-Gm-Message-State: AOAM532Q7MpxMtqcf149IX47byqiJkutAkxg8HCi10a0ldP04NlSDEHq M4/UUhavnDrIQ3robci3wA== X-Google-Smtp-Source: ABdhPJx07+pmiULzsSoVtl4zj0qdxFNqbt1zSIkcWqEUmleZyZSShcEx039rCOlIjJTn6LDKtV8Jkw== X-Received: by 2002:a17:906:7806:: with SMTP id u6mr392727ejm.130.1619121765052; Thu, 22 Apr 2021 13:02:45 -0700 (PDT) Received: from localhost.localdomain ([46.53.248.145]) by smtp.gmail.com with ESMTPSA id u15sm2936199edx.34.2021.04.22.13.02.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 22 Apr 2021 13:02:44 -0700 (PDT) From: Alexey Dobriyan To: mingo@redhat.com, peterz@infradead.org Cc: linux-kernel@vger.kernel.org, Alexey Dobriyan Subject: [PATCH 1/4] sched: make nr_running() return 32-bit Date: Thu, 22 Apr 2021 23:02:25 +0300 Message-Id: <20210422200228.1423391-1-adobriyan@gmail.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Creating 2**32 tasks is impossible due to futex pid limits and wasteful anyway. Nobody has done it. Bring nr_running() into 32-bit world to save on REX prefixes. Signed-off-by: Alexey Dobriyan --- fs/proc/loadavg.c | 2 +- fs/proc/stat.c | 2 +- include/linux/sched/stat.h | 2 +- kernel/sched/core.c | 4 ++-- 4 files changed, 5 insertions(+), 5 deletions(-) diff --git a/fs/proc/loadavg.c b/fs/proc/loadavg.c index 8468baee951d..f32878d9a39f 100644 --- a/fs/proc/loadavg.c +++ b/fs/proc/loadavg.c @@ -16,7 +16,7 @@ static int loadavg_proc_show(struct seq_file *m, void *v) get_avenrun(avnrun, FIXED_1/200, 0); - seq_printf(m, "%lu.%02lu %lu.%02lu %lu.%02lu %ld/%d %d\n", + seq_printf(m, "%lu.%02lu %lu.%02lu %lu.%02lu %u/%d %d\n", LOAD_INT(avnrun[0]), LOAD_FRAC(avnrun[0]), LOAD_INT(avnrun[1]), LOAD_FRAC(avnrun[1]), LOAD_INT(avnrun[2]), LOAD_FRAC(avnrun[2]), diff --git a/fs/proc/stat.c b/fs/proc/stat.c index f25e8531fd27..941605de7f9a 100644 --- a/fs/proc/stat.c +++ b/fs/proc/stat.c @@ -200,7 +200,7 @@ static int show_stat(struct seq_file *p, void *v) "\nctxt %llu\n" "btime %llu\n" "processes %lu\n" - "procs_running %lu\n" + "procs_running %u\n" "procs_blocked %lu\n", nr_context_switches(), (unsigned long long)boottime.tv_sec, diff --git a/include/linux/sched/stat.h b/include/linux/sched/stat.h index 568286411b43..f742229091ec 100644 --- a/include/linux/sched/stat.h +++ b/include/linux/sched/stat.h @@ -16,7 +16,7 @@ extern unsigned long total_forks; extern int nr_threads; DECLARE_PER_CPU(unsigned long, process_counts); extern int nr_processes(void); -extern unsigned long nr_running(void); +extern unsigned int nr_running(void); extern bool single_task_running(void); extern unsigned long nr_iowait(void); extern unsigned long nr_iowait_cpu(int cpu); diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 98191218d891..713ea35cb995 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -4331,9 +4331,9 @@ context_switch(struct rq *rq, struct task_struct *prev, * externally visible scheduler statistics: current number of runnable * threads, total number of context switches performed since bootup. */ -unsigned long nr_running(void) +unsigned int nr_running(void) { - unsigned long i, sum = 0; + unsigned int i, sum = 0; for_each_online_cpu(i) sum += cpu_rq(i)->nr_running; -- 2.30.2