From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752481AbdLETvK (ORCPT ); Tue, 5 Dec 2017 14:51:10 -0500 Received: from aserp1040.oracle.com ([141.146.126.69]:41956 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751443AbdLETtd (ORCPT ); Tue, 5 Dec 2017 14:49:33 -0500 From: Daniel Jordan To: linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: aaron.lu@intel.com, akpm@linux-foundation.org, dave.hansen@linux.intel.com, mgorman@techsingularity.net, mhocko@kernel.org, mike.kravetz@oracle.com, pasha.tatashin@oracle.com, steven.sistare@oracle.com, tim.c.chen@intel.com Subject: [RFC PATCH v3 3/7] ktask: add /proc/sys/debug/ktask_max_threads Date: Tue, 5 Dec 2017 14:52:16 -0500 Message-Id: <20171205195220.28208-4-daniel.m.jordan@oracle.com> X-Mailer: git-send-email 2.15.0 In-Reply-To: <20171205195220.28208-1-daniel.m.jordan@oracle.com> References: <20171205195220.28208-1-daniel.m.jordan@oracle.com> X-Source-IP: aserv0022.oracle.com [141.146.126.234] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Adds a proc file to control the maximum number of ktask threads in use for any one job. Its primary use is to aid in debugging. Signed-off-by: Daniel Jordan Reviewed-by: Steve Sistare Cc: Aaron Lu Cc: Andrew Morton Cc: Dave Hansen Cc: Mel Gorman Cc: Michal Hocko Cc: Mike Kravetz Cc: Pavel Tatashin Cc: Tim Chen --- kernel/sysctl.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 557d46728577..e296906e609e 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -67,6 +67,7 @@ #include #include #include +#include #include #include @@ -1867,6 +1868,15 @@ static struct ctl_table debug_table[] = { .extra1 = &zero, .extra2 = &one, }, +#endif +#if defined(CONFIG_KTASK) + { + .procname = "ktask_max_threads", + .data = &ktask_max_threads, + .maxlen = sizeof(ktask_max_threads), + .mode = 0644, + .proc_handler = proc_dointvec, + }, #endif { } }; -- 2.15.0 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr0-f198.google.com (mail-wr0-f198.google.com [209.85.128.198]) by kanga.kvack.org (Postfix) with ESMTP id 1BB2A6B0253 for ; Tue, 5 Dec 2017 14:49:32 -0500 (EST) Received: by mail-wr0-f198.google.com with SMTP id o20so681171wro.8 for ; Tue, 05 Dec 2017 11:49:32 -0800 (PST) Received: from aserp1040.oracle.com (aserp1040.oracle.com. [141.146.126.69]) by mx.google.com with ESMTPS id f24si875980edm.246.2017.12.05.11.49.30 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 05 Dec 2017 11:49:30 -0800 (PST) From: Daniel Jordan Subject: [RFC PATCH v3 3/7] ktask: add /proc/sys/debug/ktask_max_threads Date: Tue, 5 Dec 2017 14:52:16 -0500 Message-Id: <20171205195220.28208-4-daniel.m.jordan@oracle.com> In-Reply-To: <20171205195220.28208-1-daniel.m.jordan@oracle.com> References: <20171205195220.28208-1-daniel.m.jordan@oracle.com> Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: aaron.lu@intel.com, akpm@linux-foundation.org, dave.hansen@linux.intel.com, mgorman@techsingularity.net, mhocko@kernel.org, mike.kravetz@oracle.com, pasha.tatashin@oracle.com, steven.sistare@oracle.com, tim.c.chen@intel.com Adds a proc file to control the maximum number of ktask threads in use for any one job. Its primary use is to aid in debugging. Signed-off-by: Daniel Jordan Reviewed-by: Steve Sistare Cc: Aaron Lu Cc: Andrew Morton Cc: Dave Hansen Cc: Mel Gorman Cc: Michal Hocko Cc: Mike Kravetz Cc: Pavel Tatashin Cc: Tim Chen --- kernel/sysctl.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 557d46728577..e296906e609e 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -67,6 +67,7 @@ #include #include #include +#include #include #include @@ -1867,6 +1868,15 @@ static struct ctl_table debug_table[] = { .extra1 = &zero, .extra2 = &one, }, +#endif +#if defined(CONFIG_KTASK) + { + .procname = "ktask_max_threads", + .data = &ktask_max_threads, + .maxlen = sizeof(ktask_max_threads), + .mode = 0644, + .proc_handler = proc_dointvec, + }, #endif { } }; -- 2.15.0 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org