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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2021-03-26 18:29:31 +0300
committerIngo Molnar <mingo@kernel.org>2021-03-29 16:57:02 +0300
commit2d445c3e4a8216cfa9703998124c13250cc13e5e (patch)
treececf93bb1432ae47b9b890bf9bfee4ed9e94e7ef /kernel/locking
parentc15380b72d7ae821ee090ba5a56fc6310828dbda (diff)
downloadlinux-2d445c3e4a8216cfa9703998124c13250cc13e5e.tar.xz
locking/rtmutex: Remove rtmutex deadlock tester leftovers
The following debug members of 'struct rtmutex' are unused: - save_state: No users - file,line: Printed if ::name is NULL. This is only used for non-futex locks so ::name is never NULL - magic: Assigned to NULL by rt_mutex_destroy(), no further usage Remove them along with unused inline and macro leftovers related to the long gone deadlock tester. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20210326153943.195064296@linutronix.de
Diffstat (limited to 'kernel/locking')
-rw-r--r--kernel/locking/rtmutex-debug.c7
-rw-r--r--kernel/locking/rtmutex-debug.h2
-rw-r--r--kernel/locking/rtmutex.c3
-rw-r--r--kernel/locking/rtmutex.h2
-rw-r--r--kernel/locking/rtmutex_common.h1
5 files changed, 1 insertions, 14 deletions
diff --git a/kernel/locking/rtmutex-debug.c b/kernel/locking/rtmutex-debug.c
index 36e69100e8e0..7e411b946d4c 100644
--- a/kernel/locking/rtmutex-debug.c
+++ b/kernel/locking/rtmutex-debug.c
@@ -42,12 +42,7 @@ static void printk_task(struct task_struct *p)
static void printk_lock(struct rt_mutex *lock, int print_owner)
{
- if (lock->name)
- printk(" [%p] {%s}\n",
- lock, lock->name);
- else
- printk(" [%p] {%s:%d}\n",
- lock, lock->file, lock->line);
+ printk(" [%p] {%s}\n", lock, lock->name);
if (print_owner && rt_mutex_owner(lock)) {
printk(".. ->owner: %p\n", lock->owner);
diff --git a/kernel/locking/rtmutex-debug.h b/kernel/locking/rtmutex-debug.h
index fc549713bba3..772c9b012b62 100644
--- a/kernel/locking/rtmutex-debug.h
+++ b/kernel/locking/rtmutex-debug.h
@@ -22,8 +22,6 @@ extern void debug_rt_mutex_deadlock(enum rtmutex_chainwalk chwalk,
struct rt_mutex_waiter *waiter,
struct rt_mutex *lock);
extern void debug_rt_mutex_print_deadlock(struct rt_mutex_waiter *waiter);
-# define debug_rt_mutex_reset_waiter(w) \
- do { (w)->deadlock_lock = NULL; } while (0)
static inline bool debug_rt_mutex_detect_deadlock(struct rt_mutex_waiter *waiter,
enum rtmutex_chainwalk walk)
diff --git a/kernel/locking/rtmutex.c b/kernel/locking/rtmutex.c
index ca93e5d7b026..11abc60d1478 100644
--- a/kernel/locking/rtmutex.c
+++ b/kernel/locking/rtmutex.c
@@ -1594,9 +1594,6 @@ void __sched rt_mutex_futex_unlock(struct rt_mutex *lock)
void rt_mutex_destroy(struct rt_mutex *lock)
{
WARN_ON(rt_mutex_is_locked(lock));
-#ifdef CONFIG_DEBUG_RT_MUTEXES
- lock->magic = NULL;
-#endif
}
EXPORT_SYMBOL_GPL(rt_mutex_destroy);
diff --git a/kernel/locking/rtmutex.h b/kernel/locking/rtmutex.h
index 732f96abf462..4dbdec15f1a0 100644
--- a/kernel/locking/rtmutex.h
+++ b/kernel/locking/rtmutex.h
@@ -11,7 +11,6 @@
* Non-debug version.
*/
-#define rt_mutex_deadlock_check(l) (0)
#define debug_rt_mutex_init_waiter(w) do { } while (0)
#define debug_rt_mutex_free_waiter(w) do { } while (0)
#define debug_rt_mutex_lock(l) do { } while (0)
@@ -21,7 +20,6 @@
#define debug_rt_mutex_init(m, n, k) do { } while (0)
#define debug_rt_mutex_deadlock(d, a ,l) do { } while (0)
#define debug_rt_mutex_print_deadlock(w) do { } while (0)
-#define debug_rt_mutex_reset_waiter(w) do { } while (0)
static inline void rt_mutex_print_deadlock(struct rt_mutex_waiter *w)
{
diff --git a/kernel/locking/rtmutex_common.h b/kernel/locking/rtmutex_common.h
index a5007f00c1b7..aa047436dadf 100644
--- a/kernel/locking/rtmutex_common.h
+++ b/kernel/locking/rtmutex_common.h
@@ -30,7 +30,6 @@ struct rt_mutex_waiter {
struct task_struct *task;
struct rt_mutex *lock;
#ifdef CONFIG_DEBUG_RT_MUTEXES
- unsigned long ip;
struct pid *deadlock_task_pid;
struct rt_mutex *deadlock_lock;
#endif