linux-kernel - [PATCH] plist: make CONFIG_DEBUG_PI

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Date:	Fri,  9 May 2014 16:42:24 -0400
From:	Dan Streetman <ddstreet@...e.org>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Dan Streetman <ddstreet@...e.org>, Hugh Dickins <hughd@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mel Gorman <mgorman@...e.de>, Michal Hocko <mhocko@...e.cz>,
	Christian Ehrhardt <ehrhardt@...ux.vnet.ibm.com>,
	Rik van Riel <riel@...hat.com>,
	Weijie Yang <weijieut@...il.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Shaohua Li <shli@...ionio.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, Peter Zijlstra <peterz@...radead.org>
Subject: [PATCH] plist: make CONFIG_DEBUG_PI_LIST selectable

Change CONFIG_DEBUG_PI_LIST to be user-selectable, and add a
title and description.  Remove the dependency on DEBUG_RT_MUTEXES
since they were changed to use rbtrees, and there are other users
of plists now.

Signed-off-by: Dan Streetman <ddstreet@...e.org>
Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Peter Zijlstra <peterz@...radead.org>
---
 lib/Kconfig.debug | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index e816930..a3b1d68 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -864,11 +864,6 @@ config DEBUG_RT_MUTEXES
 	 This allows rt mutex semantics violations and rt mutex related
 	 deadlocks (lockups) to be detected and reported automatically.
 
-config DEBUG_PI_LIST
-	bool
-	default y
-	depends on DEBUG_RT_MUTEXES
-
 config RT_MUTEX_TESTER
 	bool "Built-in scriptable tester for rt-mutexes"
 	depends on DEBUG_KERNEL && RT_MUTEXES
@@ -1094,6 +1089,16 @@ config DEBUG_LIST
 
 	  If unsure, say N.
 
+config DEBUG_PI_LIST
+	bool "Debug priority linked list manipulation"
+	depends on DEBUG_KERNEL
+	help
+	  Enable this to turn on extended checks in the priority-ordered
+	  linked-list (plist) walking routines.  This checks the entire
+	  list multiple times during each manipulation.
+
+	  If unsure, say N.
+
 config DEBUG_SG
 	bool "Debug SG table operations"
 	depends on DEBUG_KERNEL
-- 
1.8.3.1

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