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Message-ID: <472209EB.50600@siemens.com> Date: Fri, 26 Oct 2007 17:38:19 +0200 From: Jan Kiszka <jan.kiszka@...mens.com> To: linux-kernel@...r.kernel.org CC: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu> Subject: [PATCH] Fix plist initialisation for CONFIG_DEBUG_PI_LIST PLIST_NODE_INIT (once used, only in -rt ATM) will fail when CONFIG_DEBUG_PI_LIST is enabled as it then generates a &NULL statement. This patch fixes the issue indirectly by turning the _lock argument of PLIST_HEAD_INIT into a pointer and adopting its users. Signed-off-by: Jan Kiszka <jan.kiszka@...mens.com> --- include/linux/plist.h | 4 ++-- include/linux/rtmutex.h | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) Index: linux-2.6.23.1-rt/include/linux/plist.h =================================================================== --- linux-2.6.23.1-rt.orig/include/linux/plist.h +++ linux-2.6.23.1-rt/include/linux/plist.h @@ -99,13 +99,13 @@ struct plist_node { /** * PLIST_HEAD_INIT - static struct plist_head initializer * @head: struct plist_head variable name - * @_lock: lock to initialize for this list + * @_lock: lock * to initialize for this list */ #define PLIST_HEAD_INIT(head, _lock) \ { \ .prio_list = LIST_HEAD_INIT((head).prio_list), \ .node_list = LIST_HEAD_INIT((head).node_list), \ - PLIST_HEAD_LOCK_INIT(&(_lock)) \ + PLIST_HEAD_LOCK_INIT(_lock) \ } /** Index: linux-2.6.23.1-rt/include/linux/rtmutex.h =================================================================== --- linux-2.6.23.1-rt.orig/include/linux/rtmutex.h +++ linux-2.6.23.1-rt/include/linux/rtmutex.h @@ -64,7 +64,7 @@ struct hrtimer_sleeper; #define __RT_MUTEX_INITIALIZER(mutexname) \ { .wait_lock = RAW_SPIN_LOCK_UNLOCKED(mutexname) \ - , .wait_list = PLIST_HEAD_INIT(mutexname.wait_list, mutexname.wait_lock) \ + , .wait_list = PLIST_HEAD_INIT(mutexname.wait_list, &mutexname.wait_lock) \ , .owner = NULL \ __DEBUG_RT_MUTEX_INITIALIZER(mutexname)} @@ -98,7 +98,7 @@ extern void rt_mutex_unlock(struct rt_mu #ifdef CONFIG_RT_MUTEXES # define INIT_RT_MUTEXES(tsk) \ - .pi_waiters = PLIST_HEAD_INIT(tsk.pi_waiters, tsk.pi_lock), \ + .pi_waiters = PLIST_HEAD_INIT(tsk.pi_waiters, &tsk.pi_lock), \ INIT_RT_MUTEX_DEBUG(tsk) #else # define INIT_RT_MUTEXES(tsk) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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