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 10099C433DB for ; Fri, 25 Dec 2020 14:25:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CF1E22137B for ; Fri, 25 Dec 2020 14:25:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729299AbgLYOYs (ORCPT ); Fri, 25 Dec 2020 09:24:48 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51072 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726190AbgLYOYr (ORCPT ); Fri, 25 Dec 2020 09:24:47 -0500 Received: from mail-pf1-x42e.google.com (mail-pf1-x42e.google.com [IPv6:2607:f8b0:4864:20::42e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4286AC061573 for ; Fri, 25 Dec 2020 06:24:07 -0800 (PST) Received: by mail-pf1-x42e.google.com with SMTP id c12so2596620pfo.10 for ; Fri, 25 Dec 2020 06:24:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=3LUL3IPs2u23VYZHBG54hTti07wvEPOalMEvUvJcwVI=; b=f5f9WFuoVFmsmAqIDEloL8BngBGC/IaiPrJRZocFb/TwBZ66msttbSGO9ljswY5fz0 JcdCX4NTSUcxRYO21KApj2HB7RHNwr9MAMUhjpZZVWNX4kgxCYq94YEjAdJxPp1s/gxn NjgkAeUJqah27rrc2NXmfy91luD3G0u9VSAG0SQikDqsVGcptNaDJ6Ot63HV43uKB6rs 2RkNqOKCZYOLKzPAUtUrUoFEa4Bh6ZrHW97UJGy6ASF0meSEvGHe0d0/8TmsK6S1dUfN iUgYgJPOcdDJMcZzA8ChzShatM37bzbgJ9dbRkwKEohoPRb8XrcXbyvdgNXsKFXjNX3V gI6A== 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; bh=3LUL3IPs2u23VYZHBG54hTti07wvEPOalMEvUvJcwVI=; b=J9I3SZF1ydBWufzydLW7944yeQyPtNer/PHMA+aOeHXyu3o1KSI44/NPBvUxde0SCR ccvtXmS7j4djDYWWThlPieaM4WLHU1BWgbG/xYaSFWboQtwH8V6+XsM55oJITCboxl70 7L9ae9Xg1i6zz1NnXjyR4jSK3HkelBCgXXT/1Dz/9GNI4uu2TDqM3viHyWpXEkoww7kI YyvsmOQnVixqDnXONbccW85E5bzxKcAUbzvpimzajv84lPFxhEhnrC1UMqCaUqnLHHze Q0PIOyKP1fUnTA2U45RrTO2wtzgAXW2f/lkVjomZJrRttbIm6piaQeQB95+9sE425q0K YcRA== X-Gm-Message-State: AOAM53205P0d3hG51R5xIiSZ2DBZfxuo8eDn6t/3lpB5mtUpuDMIfiBo sdsWRYojWVbpLvVB8FIzvHg2RoeMbc4= X-Google-Smtp-Source: ABdhPJwgshlhRsAL3a93kKqWdcKazXezUM5jjRioc+Zz4nQxzqxENk5RS4jfGIFXLF3SEBAy+DBkYQ== X-Received: by 2002:a65:450d:: with SMTP id n13mr33010899pgq.208.1608906246912; Fri, 25 Dec 2020 06:24:06 -0800 (PST) Received: from localhost ([13.94.42.177]) by smtp.gmail.com with ESMTPSA id e5sm28766113pfc.76.2020.12.25.06.24.06 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Fri, 25 Dec 2020 06:24:06 -0800 (PST) From: Qiujun Huang To: rostedt@goodmis.org, mingo@redhat.com, linux-kernel@vger.kernel.org Cc: Qiujun Huang Subject: [PATCH] trace: Remove get/put_cpu() from function_trace_init Date: Fri, 25 Dec 2020 22:23:47 +0800 Message-Id: <20201225142347.27204-1-hqjagain@gmail.com> X-Mailer: git-send-email 2.17.1 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Since commit b6f11df26fdc ("trace: Call tracing_reset_online_cpus before tracer->init()"), get/put_cpu() are not needed anymore. We can use smp_processor_id() instead. Signed-off-by: Qiujun Huang --- kernel/trace/trace_functions.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/kernel/trace/trace_functions.c b/kernel/trace/trace_functions.c index c5095dd28e20..e36fbb935017 100644 --- a/kernel/trace/trace_functions.c +++ b/kernel/trace/trace_functions.c @@ -106,8 +106,7 @@ static int function_trace_init(struct trace_array *tr) ftrace_init_array_ops(tr, func); - tr->array_buffer.cpu = get_cpu(); - put_cpu(); + tr->array_buffer.cpu = smp_processor_id(); tracing_start_cmdline_record(); tracing_start_function_trace(tr); -- 2.17.1