linux-kernel - [PATCH 3/7] cgroup: Make Kconfig prompt of debug cgroup more accurate

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Message-Id: <20170614200842.15174-4-tj@kernel.org>
Date:   Wed, 14 Jun 2017 16:08:38 -0400
From:   Tejun Heo <tj@...nel.org>
To:     Waiman Long <longman@...hat.com>
Cc:     lizefan@...wei.com, hannes@...xchg.org, peterz@...radead.org,
        mingo@...hat.com, cgroups@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-team@...com,
        Tejun Heo <tj@...nel.org>
Subject: [PATCH 3/7] cgroup: Make Kconfig prompt of debug cgroup more accurate

From: Waiman Long <longman@...hat.com>

The Kconfig prompt and description of the debug cgroup controller
more accurate by saying that it is for debug purpose only and its
interfaces are unstable.

Signed-off-by: Waiman Long <longman@...hat.com>
Signed-off-by: Tejun Heo <tj@...nel.org>
---
 init/Kconfig          | 7 +++++--
 kernel/cgroup/debug.c | 6 ++++++
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/init/Kconfig b/init/Kconfig
index 1d3475fc9496..5f9d13929ae0 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1205,11 +1205,14 @@ config CGROUP_BPF
 	  inet sockets.
 
 config CGROUP_DEBUG
-	bool "Example controller"
+	bool "Debug controller"
 	default n
+	depends on DEBUG_KERNEL
 	help
 	  This option enables a simple controller that exports
-	  debugging information about the cgroups framework.
+	  debugging information about the cgroups framework. This
+	  controller is for control cgroup debugging only. Its
+	  interfaces are not stable.
 
 	  Say N.
 
diff --git a/kernel/cgroup/debug.c b/kernel/cgroup/debug.c
index 1c209aa43733..cbe77a2087c5 100644
--- a/kernel/cgroup/debug.c
+++ b/kernel/cgroup/debug.c
@@ -1,3 +1,9 @@
+/*
+ * Debug controller
+ *
+ * WARNING: This controller is for cgroup core debugging only.
+ * Its interfaces are unstable and subject to changes at any time.
+ */
 #include <linux/ctype.h>
 #include <linux/mm.h>
 #include <linux/slab.h>
-- 
2.13.0