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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 99E00C47404 for ; Thu, 3 Oct 2019 01:39:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 66A56222CB for ; Thu, 3 Oct 2019 01:39:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570066747; bh=FpL5YvkDdg4RVG52mRZHGhleRA1CCuTWDAmisi5oPRY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=kqT1bvWITnnFglRlIrOR58/aojj1npbGxhp0NdrQN8st8+yOUOru715GtVsVIiMX8 FvElwj7f/C73KAyRcj9OkkOyKHdLP+FIr++8KhUWNq5xQjbV61SdpV7mk5MnoRF2wl SpYLLqbvq3F86QR+7gNS+rdhwu/WupIuhO+/538I= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727705AbfJCBjG (ORCPT ); Wed, 2 Oct 2019 21:39:06 -0400 Received: from mail.kernel.org ([198.145.29.99]:44740 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727127AbfJCBjG (ORCPT ); Wed, 2 Oct 2019 21:39:06 -0400 Received: from paulmck-ThinkPad-P72.home (50-39-105-78.bvtn.or.frontiernet.net [50.39.105.78]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D0709222C4; Thu, 3 Oct 2019 01:39:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570066746; bh=FpL5YvkDdg4RVG52mRZHGhleRA1CCuTWDAmisi5oPRY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Nn5I8KdOBbZD7onKrQJi5gaT/xj6j4d0WvUkv2dXzUiPqFrjAgAaPO5mnQrIsf5Zd dhtSyYFF96V59kLkGgVbllxli+YoV6flPCJp7FOE0maJf03uD2EHfzpGzh0c1wG63w 1xvHzAeJTV2MayQaxrk4EUGriiTbXs89RxsOlFqY= From: paulmck@kernel.org To: rcu@vger.kernel.org Cc: linux-kernel@vger.kernel.org, mingo@kernel.org, jiangshanlai@gmail.com, dipankar@in.ibm.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, "Paul E. McKenney" Subject: [PATCH tip/core/rcu 02/12] time: Export tick start/stop functions for rcutorture Date: Wed, 2 Oct 2019 18:38:53 -0700 Message-Id: <20191003013903.13079-2-paulmck@kernel.org> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20191003013834.GA12927@paulmck-ThinkPad-P72> References: <20191003013834.GA12927@paulmck-ThinkPad-P72> Sender: rcu-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: rcu@vger.kernel.org From: "Paul E. McKenney" It turns out that rcutorture needs to ensure that the scheduling-clock interrupt is enabled in CONFIG_NO_HZ_FULL kernels before starting on CPU-bound in-kernel processing. This commit therefore exports tick_nohz_dep_set_task(), tick_nohz_dep_clear_task(), and tick_nohz_full_setup() to GPL kernel modules. Reported-by: kbuild test robot Signed-off-by: Paul E. McKenney --- kernel/time/tick-sched.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index d1b0a84..1ffdb4b 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c @@ -172,6 +172,7 @@ static void tick_sched_handle(struct tick_sched *ts, struct pt_regs *regs) #ifdef CONFIG_NO_HZ_FULL cpumask_var_t tick_nohz_full_mask; bool tick_nohz_full_running; +EXPORT_SYMBOL_GPL(tick_nohz_full_running); static atomic_t tick_dep_mask; static bool check_tick_dependency(atomic_t *dep) @@ -351,11 +352,13 @@ void tick_nohz_dep_set_task(struct task_struct *tsk, enum tick_dep_bits bit) */ tick_nohz_dep_set_all(&tsk->tick_dep_mask, bit); } +EXPORT_SYMBOL_GPL(tick_nohz_dep_set_task); void tick_nohz_dep_clear_task(struct task_struct *tsk, enum tick_dep_bits bit) { atomic_andnot(BIT(bit), &tsk->tick_dep_mask); } +EXPORT_SYMBOL_GPL(tick_nohz_dep_clear_task); /* * Set a per-taskgroup tick dependency. Posix CPU timers need this in order to elapse @@ -404,6 +407,7 @@ void __init tick_nohz_full_setup(cpumask_var_t cpumask) cpumask_copy(tick_nohz_full_mask, cpumask); tick_nohz_full_running = true; } +EXPORT_SYMBOL_GPL(tick_nohz_full_setup); static int tick_nohz_cpu_down(unsigned int cpu) { -- 2.9.5