From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: [PATCH cgroup/for-4.21 2/2] cgroup: Add .__DEBUG__. prefix to debug file names Date: Tue, 13 Nov 2018 12:16:37 -0800 Message-ID: <20181113201637.GO2509588@devbig004.ftw2.facebook.com> References: <20181113201339.GN2509588@devbig004.ftw2.facebook.com> Mime-Version: 1.0 Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=fOLxB5SbrWg2mxlzqt0Xgj9bBC+U68lAJfHs13rndqs=; b=CK+ChHM0Q0vmnMKLQKfuuWFwMLHPDJ+GoPJHfXdh1y+WS2hwDnxt38baL7D6e9KYHA Wqjte8qOt3bQVade1JoZtdv4JlUCG3xHoXpuFmvQEP69U2uegaTVum17RLHOVIT14OsP 5l9SZW0GaM0EMBjn6lKHrQSsS8axklAAEpTdciUWxji4xddpCDPt/dvoe8XPUXNBdZAu Fioan6CcAi/AUunOAQHRHS0y5pI5FZvgAALeFPg1nBT7xxHkA8CNx1YBN70DgWevlxwQ IMrl+FkibG1htRJknIvmmWNcMt9QLKlq3W3VIPupQmmH7lg1lvK63NVmiKHFBcIB+9tM pVWw== Content-Disposition: inline In-Reply-To: <20181113201339.GN2509588@devbig004.ftw2.facebook.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Peter Zijlstra , Waiman Long Cc: Li Zefan , Johannes Weiner , cgroups@vger.kernel.org, linux-kernel@vger.kernel.org >From c1bbd933e5fae83f96acd3f748bb01a0300b315d Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 13 Nov 2018 12:06:41 -0800 Clearly mark the debug files and hide them by default by prefixing ".__DEBUG__.". Signed-off-by: Tejun Heo Cc: Peter Zijlstra (Intel) Cc: Waiman Long --- kernel/cgroup/cgroup.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index ed7f0bfe6429..e06994fd4e34 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -1400,12 +1400,15 @@ static char *cgroup_file_name(struct cgroup *cgrp, const struct cftype *cft, struct cgroup_subsys *ss = cft->ss; if (cft->ss && !(cft->flags & CFTYPE_NO_PREFIX) && - !(cgrp->root->flags & CGRP_ROOT_NOPREFIX)) - snprintf(buf, CGROUP_FILE_NAME_MAX, "%s.%s", - cgroup_on_dfl(cgrp) ? ss->name : ss->legacy_name, + !(cgrp->root->flags & CGRP_ROOT_NOPREFIX)) { + const char *dbg = (cft->flags & CFTYPE_DEBUG) ? ".__DEBUG__." : ""; + + snprintf(buf, CGROUP_FILE_NAME_MAX, "%s%s.%s", + dbg, cgroup_on_dfl(cgrp) ? ss->name : ss->legacy_name, cft->name); - else + } else { strscpy(buf, cft->name, CGROUP_FILE_NAME_MAX); + } return buf; } -- 2.17.1