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=-20.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 6ECECC6377A for ; Wed, 21 Jul 2021 20:36:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5899C61241 for ; Wed, 21 Jul 2021 20:36:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232712AbhGUTzt (ORCPT ); Wed, 21 Jul 2021 15:55:49 -0400 Received: from mail.kernel.org ([198.145.29.99]:55508 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232226AbhGUTzo (ORCPT ); Wed, 21 Jul 2021 15:55:44 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id E9FFD60725; Wed, 21 Jul 2021 20:36:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1626899781; bh=RwBedTrYcOnwlP0cCxXb/mWY9SfZub7o9Ob9Dv9SnHo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Zj0GgZm2gXhKBZvXrxKOIjPZHozfVlSlp8rWUgjmg3c4DR2bvqjQ/mRe3eZd5rQKL Q33gAHhudTg3TNhbz5tFgeitEF0qnmgO/WIL+TZZvAIVrgIjc8/scReSz+T+SfAF0d tS8UXc3xioIe+6bbKhP32yfi290zJK5sJ6NoftdfT5NHyVy6sZeJ30ySlfOakrApPM 7+dpjulpKiTfsyqwCfyLCSbIozPG1BWSft978PhdnpRDbAgk23j1tegiZdMoktZNys /KJIx7zWiC+yaJw7WV7Z0o/CJ0Hx52Juz3uOyzSGR2WD1muAJai6JLFCUWmJNRvdG/ Wb7chMlU7QQgQ== Received: by paulmck-ThinkPad-P17-Gen-1.home (Postfix, from userid 1000) id B80AD5C0A03; Wed, 21 Jul 2021 13:36:20 -0700 (PDT) From: "Paul E. McKenney" To: rcu@vger.kernel.org Cc: linux-kernel@vger.kernel.org, kernel-team@fb.com, mingo@kernel.org, jiangshanlai@gmail.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com, fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org, Mark Brown , Willy Tarreau , "Paul E . McKenney" Subject: [PATCH nolibc 2/2] tools/nolibc: Implement msleep() Date: Wed, 21 Jul 2021 13:36:19 -0700 Message-Id: <20210721203619.3373350-2-paulmck@kernel.org> X-Mailer: git-send-email 2.31.1.189.g2e36527f23 In-Reply-To: <20210721203600.GA3360826@paulmck-ThinkPad-P17-Gen-1> References: <20210721203600.GA3360826@paulmck-ThinkPad-P17-Gen-1> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Mark Brown Allow users to implement shorter delays than a full second by implementing msleep(). Signed-off-by: Mark Brown Signed-off-by: Willy Tarreau Signed-off-by: Paul E. McKenney --- tools/include/nolibc/nolibc.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/tools/include/nolibc/nolibc.h b/tools/include/nolibc/nolibc.h index 13c194aeaf3f0..3430667b0d241 100644 --- a/tools/include/nolibc/nolibc.h +++ b/tools/include/nolibc/nolibc.h @@ -2243,6 +2243,19 @@ unsigned int sleep(unsigned int seconds) return 0; } +static __attribute__((unused)) +int msleep(unsigned int msecs) +{ + struct timeval my_timeval = { msecs / 1000, (msecs % 1000) * 1000 }; + + if (sys_select(0, 0, 0, 0, &my_timeval) < 0) + return (my_timeval.tv_sec * 1000) + + (my_timeval.tv_usec / 1000) + + !!(my_timeval.tv_usec % 1000); + else + return 0; +} + static __attribute__((unused)) int stat(const char *path, struct stat *buf) { -- 2.31.1.189.g2e36527f23