From patchwork Thu Jan 16 14:44:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Masami Hiramatsu (Google)" X-Patchwork-Id: 1224258 Return-Path: X-Original-To: incoming-bpf@patchwork.ozlabs.org Delivered-To: patchwork-incoming-bpf@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=bpf-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=kernel.org Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=default header.b=lSvM9Bj/; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 47z6RY5mzPz9s4Y for ; Fri, 17 Jan 2020 01:44:57 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726371AbgAPOo5 (ORCPT ); Thu, 16 Jan 2020 09:44:57 -0500 Received: from mail.kernel.org ([198.145.29.99]:35436 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726151AbgAPOo5 (ORCPT ); Thu, 16 Jan 2020 09:44:57 -0500 Received: from localhost.localdomain (NE2965lan1.rev.em-net.ne.jp [210.141.244.193]) (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 EE1912075B; Thu, 16 Jan 2020 14:44:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579185896; bh=4upz+fdluUISoJZ33aDVbQ1x81k94Nw4AOfmfeoVQZ0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lSvM9Bj/NOwNqHbD6Pu9DMbkqlfc5gX1JoIItPS1FjXevogDBXBKS3FsMWOd5BcQM oDBxU3hJ0dnSiC5N/LfEPppkICShyhQsZd9Xzns7H/1eZNq6FcLG9CI3A55EQZyVSe 2m6CFZpk+rqbCBYJZpH6MXCXEcHVZcTP017JKnsU= From: Masami Hiramatsu To: Brendan Gregg , Steven Rostedt , Alexei Starovoitov Cc: mhiramat@kernel.org, Ingo Molnar , bpf@vger.kernel.org, linux-kernel@vger.kernel.org, Daniel Borkmann , Arnaldo Carvalho de Melo , "David S . Miller" , paulmck@kernel.org, joel@joelfernandes.org, "Naveen N . Rao" , Anil S Keshavamurthy Subject: [RFT PATCH 04/13] kprobes: Make optimizer delay to 1 second Date: Thu, 16 Jan 2020 23:44:52 +0900 Message-Id: <157918589199.29301.4419459150054220408.stgit@devnote2> X-Mailer: git-send-email 2.20.1 In-Reply-To: <157918584866.29301.6941815715391411338.stgit@devnote2> References: <157918584866.29301.6941815715391411338.stgit@devnote2> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Since the 5 jiffies delay for the optimizer is too short to wait for other probes, make it longer, like 1 second. Signed-off-by: Masami Hiramatsu --- kernel/kprobes.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/kprobes.c b/kernel/kprobes.c index 0dacdcecc90f..9c6e230852ad 100644 --- a/kernel/kprobes.c +++ b/kernel/kprobes.c @@ -469,7 +469,8 @@ static int kprobe_optimizer_queue_update; static void kprobe_optimizer(struct work_struct *work); static DECLARE_DELAYED_WORK(optimizing_work, kprobe_optimizer); -#define OPTIMIZE_DELAY 5 +/* Wait 1 second for starting optimization */ +#define OPTIMIZE_DELAY HZ /* * Optimize (replace a breakpoint with a jump) kprobes listed on