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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3E8ADC433F5 for ; Tue, 10 May 2022 09:45:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239204AbiEJJto (ORCPT ); Tue, 10 May 2022 05:49:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36288 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239132AbiEJJti (ORCPT ); Tue, 10 May 2022 05:49:38 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C057613D7D; Tue, 10 May 2022 02:45:41 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 5BEB3615F6; Tue, 10 May 2022 09:45:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 27EE5C385A6; Tue, 10 May 2022 09:45:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1652175940; bh=DA2sXq3+sFtWkZvanBaOfDxgyFD71ZwLr0nhsoVt/Vs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WSYdStevd34miebV06Iq8S7LogMNsnybjdRk8kFhtYWJCiG+xDCZXddPnvEy3wgAS lqkXSJqbX+/FScknnQvdxd5+w6U0N/CW29rEvI9i58awd1417yhTvFe1j/JtJbHFQC ZP6JkiIWR4Qmxx0mHGApe1W2j7RcxXZKiNlbdFu/eyYRB5oPGlNpBB8VVLlwySI+kJ 2lz6OUIuQwgXuBGjcVZ+KsDDVhPKaKm/ScZX49IgnPpjvZqZrWcPXuXoqJG7XgZM0/ AvEH/IdFwyCVkrTu0Ol6i9rJeSAiSqYnfmPQ9lzTtMnPeaZi50GrozyBprOatGJXOy qkN3l0+AOZlHw== From: Daniel Bristot de Oliveira To: Steven Rostedt , linux-kernel@vger.kernel.org, linux-trace-devel@vger.kernel.org Cc: Daniel Bristot de Oliveira , Juri Lelli , Ingo Molnar , Clark Williams Subject: [PATCH 3/3] tracing/timerlat: Do not wakeup the thread if the trace stops at the IRQ Date: Tue, 10 May 2022 11:45:25 +0200 Message-Id: X-Mailer: git-send-email 2.32.0 In-Reply-To: <2c2d9a56c0886c8402ba320de32856cbbb10c2bb.1652175637.git.bristot@kernel.org> References: <2c2d9a56c0886c8402ba320de32856cbbb10c2bb.1652175637.git.bristot@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org There is no need to wakeup the timerlat/ thread if stop tracing is hit at the timerlat's IRQ handler. Return before waking up timerlat's thread. Cc: Steven Rostedt Cc: Ingo Molnar Signed-off-by: Daniel Bristot de Oliveira --- kernel/trace/trace_osnoise.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/trace/trace_osnoise.c b/kernel/trace/trace_osnoise.c index 9b204ee3c6f5..035ec8b84e12 100644 --- a/kernel/trace/trace_osnoise.c +++ b/kernel/trace/trace_osnoise.c @@ -1595,6 +1595,8 @@ static enum hrtimer_restart timerlat_irq(struct hrtimer *timer) osnoise_stop_tracing(); notify_new_max_latency(diff); + + return HRTIMER_NORESTART; } } -- 2.32.0