Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754026AbaBFSgb (ORCPT ); Thu, 6 Feb 2014 13:36:31 -0500 Received: from mail1.windriver.com ([147.11.146.13]:41575 "EHLO mail1.windriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752055AbaBFSg3 (ORCPT ); Thu, 6 Feb 2014 13:36:29 -0500 From: Paul Gortmaker To: CC: Paul Gortmaker , Frederic Weisbecker , "Paul E. McKenney" Subject: [PATCH v2] nohz: ensure users are aware boot CPU is not NO_HZ_FULL Date: Thu, 6 Feb 2014 13:36:21 -0500 Message-ID: <1391711781-7466-1-git-send-email-paul.gortmaker@windriver.com> X-Mailer: git-send-email 1.8.5.2 In-Reply-To: <52F3D583.9070208@windriver.com> References: <52F3D583.9070208@windriver.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This bit of information is in the Kconfig help text: Note the boot CPU will still be kept outside the range to handle the timekeeping duty. However neither the variable NO_HZ_FULL_ALL, or the prompt convey this important detail, so lets add it to the prompt to make it more explicitly obvious to the average user. Cc: Frederic Weisbecker Cc: "Paul E. McKenney" Signed-off-by: Paul Gortmaker --- v2: use "CPU 0" instead of "boot CPU". kernel/time/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/time/Kconfig b/kernel/time/Kconfig index 3ce6e8c5f3fc..f448513a45ed 100644 --- a/kernel/time/Kconfig +++ b/kernel/time/Kconfig @@ -124,7 +124,7 @@ config NO_HZ_FULL endchoice config NO_HZ_FULL_ALL - bool "Full dynticks system on all CPUs by default" + bool "Full dynticks system on all CPUs by default (except CPU 0)" depends on NO_HZ_FULL help If the user doesn't pass the nohz_full boot option to -- 1.8.5.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/