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authorLinus Torvalds <torvalds@linux-foundation.org>2011-03-15 21:28:30 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-15 21:28:30 -0400
commit0586bed3e8563c2eb89bc7256e30ce633ae06cfb (patch)
tree7a59610f45f7222f25b3212c53fa28636bb4427c
parentb80cd62b7d4406bbe8c573fe4381dcc71a2850fd (diff)
parentdbebbfbb1605f0179e7c0d900d941cc9c45de569 (diff)
Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: rtmutex: tester: Remove the remaining BKL leftovers lockdep/timers: Explain in detail the locking problems del_timer_sync() may cause rtmutex: Simplify PI algorithm and make highest prio task get lock rwsem: Remove redundant asmregparm annotation rwsem: Move duplicate function prototypes to linux/rwsem.h rwsem: Unify the duplicate rwsem_is_locked() inlines rwsem: Move duplicate init macros and functions to linux/rwsem.h rwsem: Move duplicate struct rwsem declaration to linux/rwsem.h x86: Cleanup rwsem_count_t typedef rwsem: Cleanup includes locking: Remove deprecated lock initializers cred: Replace deprecated spinlock initialization kthread: Replace deprecated spinlock initialization xtensa: Replace deprecated spinlock initialization um: Replace deprecated spinlock initialization sparc: Replace deprecated spinlock initialization mips: Replace deprecated spinlock initialization cris: Replace deprecated spinlock initialization alpha: Replace deprecated spinlock initialization rtmutex-tester: Remove BKL tests
Diffstat
-rw-r--r--Documentation/spinlocks.txt24
-rw-r--r--arch/alpha/include/asm/rwsem.h36
-rw-r--r--arch/cris/arch-v32/kernel/smp.c4
-rw-r--r--arch/ia64/include/asm/rwsem.h37
-rw-r--r--arch/powerpc/include/asm/rwsem.h51
-rw-r--r--arch/s390/include/asm/rwsem.h63
-rw-r--r--arch/sh/include/asm/rwsem.h56
-rw-r--r--arch/sparc/include/asm/rwsem.h46
-rw-r--r--arch/sparc/lib/atomic32.c2
-rw-r--r--arch/um/drivers/ubd_kern.c2
-rw-r--r--arch/x86/include/asm/rwsem.h80
-rw-r--r--arch/xtensa/include/asm/rwsem.h37
-rw-r--r--include/linux/kthread.h2
-rw-r--r--include/linux/rwlock_types.h8
-rw-r--r--include/linux/rwsem-spinlock.h31
-rw-r--r--include/linux/rwsem.h53
-rw-r--r--include/linux/spinlock_types.h8
-rw-r--r--kernel/cred.c2
-rw-r--r--kernel/futex.c22
-rw-r--r--kernel/rtmutex-debug.c1
-rw-r--r--kernel/rtmutex-tester.c40
-rw-r--r--kernel/rtmutex.c318
-rw-r--r--kernel/rtmutex_common.h16
-rw-r--r--kernel/timer.c23
-rw-r--r--lib/rwsem.c10
-rwxr-xr-xscripts/checkpatch.pl5
-rw-r--r--scripts/rt-tester/rt-tester.py2
-rw-r--r--scripts/rt-tester/t2-l1-2rt-sameprio.tst5
-rw-r--r--scripts/rt-tester/t2-l1-pi.tst5
-rw-r--r--scripts/rt-tester/t2-l1-signal.tst5
-rw-r--r--scripts/rt-tester/t2-l2-2rt-deadlock.tst5
-rw-r--r--scripts/rt-tester/t3-l1-pi-1rt.tst5
-rw-r--r--scripts/rt-tester/t3-l1-pi-2rt.tst5
-rw-r--r--scripts/rt-tester/t3-l1-pi-3rt.tst5
-rw-r--r--scripts/rt-tester/t3-l1-pi-signal.tst5
-rw-r--r--scripts/rt-tester/t3-l1-pi-steal.tst5
-rw-r--r--scripts/rt-tester/t3-l2-pi.tst5
-rw-r--r--scripts/rt-tester/t4-l2-pi-deboost.tst5
-rw-r--r--scripts/rt-tester/t5-l4-pi-boost-deboost-setsched.tst5
-rw-r--r--scripts/rt-tester/t5-l4-pi-boost-deboost.tst5
40 files changed, 228 insertions, 816 deletions
diff --git a/Documentation/spinlocks.txt b/Documentation/spinlocks.txt
index 178c831b907d..2e3c64b1a6a5 100644
--- a/Documentation/spinlocks.txt
+++ b/Documentation/spinlocks.txt
@@ -86,7 +86,7 @@ to change the variables it has to get an exclusive write lock.
86 86
87The routines look the same as above: 87The routines look the same as above:
88 88
89 rwlock_t xxx_lock = RW_LOCK_UNLOCKED; 89 rwlock_t xxx_lock = __RW_LOCK_UNLOCKED(xxx_lock);
90 90
91 unsigned long flags; 91 unsigned long flags;
92 92
@@ -196,25 +196,3 @@ appropriate:
196 196
197For static initialization, use DEFINE_SPINLOCK() / DEFINE_RWLOCK() or 197For static initialization, use DEFINE_SPINLOCK() / DEFINE_RWLOCK() or
198__SPIN_LOCK_UNLOCKED() / __RW_LOCK_UNLOCKED() as appropriate. 198__SPIN_LOCK_UNLOCKED() / __RW_LOCK_UNLOCKED() as appropriate.
199
200SPIN_LOCK_UNLOCKED and RW_LOCK_UNLOCKED are deprecated. These interfere
201with lockdep state tracking.
202
203Most of the time, you can simply turn:
204 static spinlock_t xxx_lock = SPIN_LOCK_UNLOCKED;
205into:
206 static DEFINE_SPINLOCK(xxx_lock);
207
208Static structure member variables go from:
209
210 struct foo bar {
211 .lock = SPIN_LOCK_UNLOCKED;
212 };
213
214to:
215
216 struct foo bar {
217 .lock = __SPIN_LOCK_UNLOCKED(bar.lock);
218 };
219
220Declaration of static rw_locks undergo a similar transformation.
diff --git a/arch/alpha/include/asm/rwsem.h b/arch/alpha/include/asm/rwsem.h
index 1570c0b54336..a83bbea62c67 100644
--- a/arch/alpha/include/asm/rwsem.h
+++ b/arch/alpha/include/asm/rwsem.h
@@ -13,44 +13,13 @@
13#ifdef __KERNEL__ 13#ifdef __KERNEL__
14 14
15#include <linux/compiler.h> 15#include <linux/compiler.h>
16#include <linux/list.h>
17#include <linux/spinlock.h>
18 16
19struct rwsem_waiter;
20
21extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem);
22extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem);
23extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *);
24extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem);
25
26/*
27 * the semaphore definition
28 */
29struct rw_semaphore {
30 long count;
31#define RWSEM_UNLOCKED_VALUE 0x0000000000000000L 17#define RWSEM_UNLOCKED_VALUE 0x0000000000000000L
32#define RWSEM_ACTIVE_BIAS 0x0000000000000001L 18#define RWSEM_ACTIVE_BIAS 0x0000000000000001L
33#define RWSEM_ACTIVE_MASK 0x00000000ffffffffL 19#define RWSEM_ACTIVE_MASK 0x00000000ffffffffL
34#define RWSEM_WAITING_BIAS (-0x0000000100000000L) 20#define RWSEM_WAITING_BIAS (-0x0000000100000000L)
35#define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS 21#define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS
36#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS) 22#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS)
37 spinlock_t wait_lock;
38 struct list_head wait_list;
39};
40
41#define __RWSEM_INITIALIZER(name) \
42 { RWSEM_UNLOCKED_VALUE, SPIN_LOCK_UNLOCKED, \
43 LIST_HEAD_INIT((name).wait_list) }
44
45#define DECLARE_RWSEM(name) \
46 struct rw_semaphore name = __RWSEM_INITIALIZER(name)
47
48static inline void init_rwsem(struct rw_semaphore *sem)
49{
50 sem->count = RWSEM_UNLOCKED_VALUE;
51 spin_lock_init(&sem->wait_lock);
52 INIT_LIST_HEAD(&sem->wait_list);
53}
54 23
55static inline void __down_read(struct rw_semaphore *sem) 24static inline void __down_read(struct rw_semaphore *sem)
56{ 25{
@@ -250,10 +219,5 @@ static inline long rwsem_atomic_update(long val, struct rw_semaphore *sem)
250#endif 219#endif
251} 220}
252 221
253static inline int rwsem_is_locked(struct rw_semaphore *sem)
254{
255 return (sem->count != 0);
256}
257
258#endif /* __KERNEL__ */ 222#endif /* __KERNEL__ */
259#endif /* _ALPHA_RWSEM_H */ 223#endif /* _ALPHA_RWSEM_H */
diff --git a/arch/cris/arch-v32/kernel/smp.c b/arch/cris/arch-v32/kernel/smp.c
index 84fed3b4b079..4c9e3e1ba5d1 100644
--- a/arch/cris/arch-v32/kernel/smp.c
+++ b/arch/cris/arch-v32/kernel/smp.c
@@ -26,7 +26,9 @@
26#define FLUSH_ALL (void*)0xffffffff 26#define FLUSH_ALL (void*)0xffffffff
27 27
28/* Vector of locks used for various atomic operations */ 28/* Vector of locks used for various atomic operations */
29spinlock_t cris_atomic_locks[] = { [0 ... LOCK_COUNT - 1] = SPIN_LOCK_UNLOCKED}; 29spinlock_t cris_atomic_locks[] = {
30 [0 ... LOCK_COUNT - 1] = __SPIN_LOCK_UNLOCKED(cris_atomic_locks)
31};
30 32
31/* CPU masks */ 33/* CPU masks */
32cpumask_t phys_cpu_present_map = CPU_MASK_NONE; 34cpumask_t phys_cpu_present_map = CPU_MASK_NONE;
diff --git a/arch/ia64/include/asm/rwsem.h b/arch/ia64/include/asm/rwsem.h
index 215d5454c7d3..3027e7516d85 100644
--- a/arch/ia64/include/asm/rwsem.h
+++ b/arch/ia64/include/asm/rwsem.h
@@ -25,20 +25,8 @@
25#error "Please don't include <asm/rwsem.h> directly, use <linux/rwsem.h> instead." 25#error "Please don't include <asm/rwsem.h> directly, use <linux/rwsem.h> instead."
26#endif 26#endif
27 27
28#include <linux/list.h>
29#include <linux/spinlock.h>
30
31#include <asm/intrinsics.h> 28#include <asm/intrinsics.h>
32 29
33/*
34 * the semaphore definition
35 */
36struct rw_semaphore {
37 signed long count;
38 spinlock_t wait_lock;
39 struct list_head wait_list;
40};
41
42#define RWSEM_UNLOCKED_VALUE __IA64_UL_CONST(0x0000000000000000) 30#define RWSEM_UNLOCKED_VALUE __IA64_UL_CONST(0x0000000000000000)
43#define RWSEM_ACTIVE_BIAS (1L) 31#define RWSEM_ACTIVE_BIAS (1L)
44#define RWSEM_ACTIVE_MASK (0xffffffffL) 32#define RWSEM_ACTIVE_MASK (0xffffffffL)
@@ -46,26 +34,6 @@ struct rw_semaphore {
46#define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS 34#define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS
47#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS) 35#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS)
48 36
49#define __RWSEM_INITIALIZER(name) \
50 { RWSEM_UNLOCKED_VALUE, __SPIN_LOCK_UNLOCKED((name).wait_lock), \
51 LIST_HEAD_INIT((name).wait_list) }
52
53#define DECLARE_RWSEM(name) \
54 struct rw_semaphore name = __RWSEM_INITIALIZER(name)
55
56extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem);
57extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem);
58extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem);
59extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem);
60
61static inline void
62init_rwsem (struct rw_semaphore *sem)
63{
64 sem->count = RWSEM_UNLOCKED_VALUE;
65 spin_lock_init(&sem->wait_lock);
66 INIT_LIST_HEAD(&sem->wait_list);
67}
68
69/* 37/*
70 * lock for reading 38 * lock for reading
71 */ 39 */
@@ -174,9 +142,4 @@ __downgrade_write (struct rw_semaphore *sem)
174#define rwsem_atomic_add(delta, sem) atomic64_add(delta, (atomic64_t *)(&(sem)->count)) 142#define rwsem_atomic_add(delta, sem) atomic64_add(delta, (atomic64_t *)(&(sem)->count))
175#define rwsem_atomic_update(delta, sem) atomic64_add_return(delta, (atomic64_t *)(&(sem)->count)) 143#define rwsem_atomic_update(delta, sem) atomic64_add_return(delta, (atomic64_t *)(&(sem)->count))
176 144
177static inline int rwsem_is_locked(struct rw_semaphore *sem)
178{
179 return (sem->count != 0);
180}
181
182#endif /* _ASM_IA64_RWSEM_H */ 145#endif /* _ASM_IA64_RWSEM_H */
diff --git a/arch/powerpc/include/asm/rwsem.h b/arch/powerpc/include/asm/rwsem.h
index 8447d89fbe72..bb1e2cdeb9bf 100644
--- a/arch/powerpc/include/asm/rwsem.h
+++ b/arch/powerpc/include/asm/rwsem.h
@@ -13,11 +13,6 @@
13 * by Paul Mackerras <paulus@samba.org>. 13 * by Paul Mackerras <paulus@samba.org>.
14 */ 14 */
15 15
16#include <linux/list.h>
17#include <linux/spinlock.h>
18#include <asm/atomic.h>
19#include <asm/system.h>
20
21/* 16/*
22 * the semaphore definition 17 * the semaphore definition
23 */ 18 */
@@ -33,47 +28,6 @@
33#define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS 28#define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS
34#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS) 29#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS)
35 30
36struct rw_semaphore {
37 long count;
38 spinlock_t wait_lock;
39 struct list_head wait_list;
40#ifdef CONFIG_DEBUG_LOCK_ALLOC
41 struct lockdep_map dep_map;
42#endif
43};
44
45#ifdef CONFIG_DEBUG_LOCK_ALLOC
46# define __RWSEM_DEP_MAP_INIT(lockname) , .dep_map = { .name = #lockname }
47#else
48# define __RWSEM_DEP_MAP_INIT(lockname)
49#endif
50
51#define __RWSEM_INITIALIZER(name) \
52{ \
53 RWSEM_UNLOCKED_VALUE, \
54 __SPIN_LOCK_UNLOCKED((name).wait_lock), \
55 LIST_HEAD_INIT((name).wait_list) \
56 __RWSEM_DEP_MAP_INIT(name) \
57}
58
59#define DECLARE_RWSEM(name) \
60 struct rw_semaphore name = __RWSEM_INITIALIZER(name)
61
62extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem);
63extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem);
64extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem);
65extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem);
66
67extern void __init_rwsem(struct rw_semaphore *sem, const char *name,
68 struct lock_class_key *key);
69
70#define init_rwsem(sem) \
71 do { \
72 static struct lock_class_key __key; \
73 \
74 __init_rwsem((sem), #sem, &__key); \
75 } while (0)
76
77/* 31/*
78 * lock for reading 32 * lock for reading
79 */ 33 */
@@ -174,10 +128,5 @@ static inline long rwsem_atomic_update(long delta, struct rw_semaphore *sem)
174 return atomic_long_add_return(delta, (atomic_long_t *)&sem->count); 128 return atomic_long_add_return(delta, (atomic_long_t *)&sem->count);
175} 129}
176 130
177static inline int rwsem_is_locked(struct rw_semaphore *sem)
178{
179 return sem->count != 0;
180}
181
182#endif /* __KERNEL__ */ 131#endif /* __KERNEL__ */
183#endif /* _ASM_POWERPC_RWSEM_H */ 132#endif /* _ASM_POWERPC_RWSEM_H */
diff --git a/arch/s390/include/asm/rwsem.h b/arch/s390/include/asm/rwsem.h
index 423fdda2322d..d0eb4653cebd 100644
--- a/arch/s390/include/asm/rwsem.h
+++ b/arch/s390/include/asm/rwsem.h
@@ -43,29 +43,6 @@
43 43
44#ifdef __KERNEL__ 44#ifdef __KERNEL__
45 45
46#include <linux/list.h>
47#include <linux/spinlock.h>
48
49struct rwsem_waiter;
50
51extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *);
52extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *);
53extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *);
54extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *);
55extern struct rw_semaphore *rwsem_downgrade_write(struct rw_semaphore *);
56
57/*
58 * the semaphore definition
59 */
60struct rw_semaphore {
61 signed long count;
62 spinlock_t wait_lock;
63 struct list_head wait_list;
64#ifdef CONFIG_DEBUG_LOCK_ALLOC
65 struct lockdep_map dep_map;
66#endif
67};
68
69#ifndef __s390x__ 46#ifndef __s390x__
70#define RWSEM_UNLOCKED_VALUE 0x00000000 47#define RWSEM_UNLOCKED_VALUE 0x00000000
71#define RWSEM_ACTIVE_BIAS 0x00000001 48#define RWSEM_ACTIVE_BIAS 0x00000001
@@ -81,41 +58,6 @@ struct rw_semaphore {
81#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS) 58#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS)
82 59
83/* 60/*
84 * initialisation
85 */
86
87#ifdef CONFIG_DEBUG_LOCK_ALLOC
88# define __RWSEM_DEP_MAP_INIT(lockname) , .dep_map = { .name = #lockname }
89#else
90# define __RWSEM_DEP_MAP_INIT(lockname)
91#endif
92
93#define __RWSEM_INITIALIZER(name) \
94 { RWSEM_UNLOCKED_VALUE, __SPIN_LOCK_UNLOCKED((name).wait.lock), \
95 LIST_HEAD_INIT((name).wait_list) __RWSEM_DEP_MAP_INIT(name) }
96
97#define DECLARE_RWSEM(name) \
98 struct rw_semaphore name = __RWSEM_INITIALIZER(name)
99
100static inline void init_rwsem(struct rw_semaphore *sem)
101{
102 sem->count = RWSEM_UNLOCKED_VALUE;
103 spin_lock_init(&sem->wait_lock);
104 INIT_LIST_HEAD(&sem->wait_list);
105}
106
107extern void __init_rwsem(struct rw_semaphore *sem, const char *name,
108 struct lock_class_key *key);
109
110#define init_rwsem(sem) \
111do { \
112 static struct lock_class_key __key; \
113 \
114 __init_rwsem((sem), #sem, &__key); \
115} while (0)
116
117
118/*
119 * lock for reading 61 * lock for reading
120 */ 62 */
121static inline void __down_read(struct rw_semaphore *sem) 63static inline void __down_read(struct rw_semaphore *sem)
@@ -377,10 +319,5 @@ static inline long rwsem_atomic_update(long delta, struct rw_semaphore *sem)
377 return new; 319 return new;
378} 320}
379 321
380static inline int rwsem_is_locked(struct rw_semaphore *sem)
381{
382 return (sem->count != 0);
383}
384
385#endif /* __KERNEL__ */ 322#endif /* __KERNEL__ */
386#endif /* _S390_RWSEM_H */ 323#endif /* _S390_RWSEM_H */
diff --git a/arch/sh/include/asm/rwsem.h b/arch/sh/include/asm/rwsem.h
index 06e2251a5e48..edab57265293 100644
--- a/arch/sh/include/asm/rwsem.h
+++ b/arch/sh/include/asm/rwsem.h
@@ -11,64 +11,13 @@
11#endif 11#endif
12 12
13#ifdef __KERNEL__ 13#ifdef __KERNEL__
14#include <linux/list.h>
15#include <linux/spinlock.h>
16#include <asm/atomic.h>
17#include <asm/system.h>
18 14
19/*
20 * the semaphore definition
21 */
22struct rw_semaphore {
23 long count;
24#define RWSEM_UNLOCKED_VALUE 0x00000000 15#define RWSEM_UNLOCKED_VALUE 0x00000000
25#define RWSEM_ACTIVE_BIAS 0x00000001 16#define RWSEM_ACTIVE_BIAS 0x00000001
26#define RWSEM_ACTIVE_MASK 0x0000ffff 17#define RWSEM_ACTIVE_MASK 0x0000ffff
27#define RWSEM_WAITING_BIAS (-0x00010000) 18#define RWSEM_WAITING_BIAS (-0x00010000)
28#define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS 19#define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS
29#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS) 20#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS)
30 spinlock_t wait_lock;
31 struct list_head wait_list;
32#ifdef CONFIG_DEBUG_LOCK_ALLOC
33 struct lockdep_map dep_map;
34#endif
35};
36
37#ifdef CONFIG_DEBUG_LOCK_ALLOC
38# define __RWSEM_DEP_MAP_INIT(lockname) , .dep_map = { .name = #lockname }
39#else
40# define __RWSEM_DEP_MAP_INIT(lockname)
41#endif
42
43#define __RWSEM_INITIALIZER(name) \
44 { RWSEM_UNLOCKED_VALUE, __SPIN_LOCK_UNLOCKED((name).wait_lock), \
45 LIST_HEAD_INIT((name).wait_list) \
46 __RWSEM_DEP_MAP_INIT(name) }
47
48#define DECLARE_RWSEM(name) \
49 struct rw_semaphore name = __RWSEM_INITIALIZER(name)
50
51extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem);
52extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem);
53extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem);
54extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem);
55
56extern void __init_rwsem(struct rw_semaphore *sem, const char *name,
57 struct lock_class_key *key);
58
59#define init_rwsem(sem) \
60do { \
61 static struct lock_class_key __key; \
62 \
63 __init_rwsem((sem), #sem, &__key); \
64} while (0)
65
66static inline void init_rwsem(struct rw_semaphore *sem)
67{
68 sem->count = RWSEM_UNLOCKED_VALUE;
69 spin_lock_init(&sem->wait_lock);
70 INIT_LIST_HEAD(&sem->wait_list);
71}
72 21
73/* 22/*
74 * lock for reading 23 * lock for reading
@@ -179,10 +128,5 @@ static inline int rwsem_atomic_update(int delta, struct rw_semaphore *sem)
179 return atomic_add_return(delta, (atomic_t *)(&sem->count)); 128 return atomic_add_return(delta, (atomic_t *)(&sem->count));
180} 129}
181 130
182static inline int rwsem_is_locked(struct rw_semaphore *sem)
183{
184 return (sem->count != 0);
185}
186
187#endif /* __KERNEL__ */ 131#endif /* __KERNEL__ */
188#endif /* _ASM_SH_RWSEM_H */ 132#endif /* _ASM_SH_RWSEM_H */
diff --git a/arch/sparc/include/asm/rwsem.h b/arch/sparc/include/asm/rwsem.h
index a2b4302869bc..069bf4d663a1 100644
--- a/arch/sparc/include/asm/rwsem.h
+++ b/arch/sparc/include/asm/rwsem.h
@@ -13,53 +13,12 @@
13 13
14#ifdef __KERNEL__ 14#ifdef __KERNEL__
15 15
16#include <linux/list.h>
17#include <linux/spinlock.h>
18
19struct rwsem_waiter;
20
21struct rw_semaphore {
22 signed long count;
23#define RWSEM_UNLOCKED_VALUE 0x00000000L 16#define RWSEM_UNLOCKED_VALUE 0x00000000L
24#define RWSEM_ACTIVE_BIAS 0x00000001L 17#define RWSEM_ACTIVE_BIAS 0x00000001L
25#define RWSEM_ACTIVE_MASK 0xffffffffL 18#define RWSEM_ACTIVE_MASK 0xffffffffL
26#define RWSEM_WAITING_BIAS (-RWSEM_ACTIVE_MASK-1) 19#define RWSEM_WAITING_BIAS (-RWSEM_ACTIVE_MASK-1)
27#define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS 20#define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS
28#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS) 21#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS)
29 spinlock_t wait_lock;
30 struct list_head wait_list;
31#ifdef CONFIG_DEBUG_LOCK_ALLOC
32 struct lockdep_map dep_map;
33#endif
34};
35
36#ifdef CONFIG_DEBUG_LOCK_ALLOC
37# define __RWSEM_DEP_MAP_INIT(lockname) , .dep_map = { .name = #lockname }
38#else
39# define __RWSEM_DEP_MAP_INIT(lockname)
40#endif
41
42#define __RWSEM_INITIALIZER(name) \
43{ RWSEM_UNLOCKED_VALUE, __SPIN_LOCK_UNLOCKED((name).wait_lock), \
44 LIST_HEAD_INIT((name).wait_list) __RWSEM_DEP_MAP_INIT(name) }
45
46#define DECLARE_RWSEM(name) \
47 struct rw_semaphore name = __RWSEM_INITIALIZER(name)
48
49extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem);
50extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem);
51extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem);
52extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem);
53
54extern void __init_rwsem(struct rw_semaphore *sem, const char *name,
55 struct lock_class_key *key);
56
57#define init_rwsem(sem) \
58do { \
59 static struct lock_class_key __key; \
60 \
61 __init_rwsem((sem), #sem, &__key); \
62} while (0)
63 22
64/* 23/*
65 * lock for reading 24 * lock for reading
@@ -160,11 +119,6 @@ static inline long rwsem_atomic_update(long delta, struct rw_semaphore *sem)
160 return atomic64_add_return(delta, (atomic64_t *)(&sem->count)); 119 return atomic64_add_return(delta, (atomic64_t *)(&sem->count));
161} 120}
162 121
163static inline int rwsem_is_locked(struct rw_semaphore *sem)
164{
165 return (sem->count != 0);
166}
167
168#endif /* __KERNEL__ */ 122#endif /* __KERNEL__ */
169 123
170#endif /* _SPARC64_RWSEM_H */ 124#endif /* _SPARC64_RWSEM_H */
diff --git a/arch/sparc/lib/atomic32.c b/arch/sparc/lib/atomic32.c
index cbddeb38ffda..d3c7a12ad879 100644
--- a/arch/sparc/lib/atomic32.c
+++ b/arch/sparc/lib/atomic32.c
@@ -16,7 +16,7 @@
16#define ATOMIC_HASH(a) (&__atomic_hash[(((unsigned long)a)>>8) & (ATOMIC_HASH_SIZE-1)]) 16#define ATOMIC_HASH(a) (&__atomic_hash[(((unsigned long)a)>>8) & (ATOMIC_HASH_SIZE-1)])
17 17
18spinlock_t __atomic_hash[ATOMIC_HASH_SIZE] = { 18spinlock_t __atomic_hash[ATOMIC_HASH_SIZE] = {
19 [0 ... (ATOMIC_HASH_SIZE-1)] = SPIN_LOCK_UNLOCKED 19 [0 ... (ATOMIC_HASH_SIZE-1)] = __SPIN_LOCK_UNLOCKED(__atomic_hash)
20}; 20};
21 21
22#else /* SMP */ 22#else /* SMP */
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index ba4a98ba39c0..620f5b70957d 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -185,7 +185,7 @@ struct ubd {
185 .no_cow = 0, \ 185 .no_cow = 0, \
186 .shared = 0, \ 186 .shared = 0, \
187 .cow = DEFAULT_COW, \ 187 .cow = DEFAULT_COW, \
188 .lock = SPIN_LOCK_UNLOCKED, \ 188 .lock = __SPIN_LOCK_UNLOCKED(ubd_devs.lock), \
189 .request = NULL, \ 189 .request = NULL, \
190 .start_sg = 0, \ 190 .start_sg = 0, \
191 .end_sg = 0, \ 191 .end_sg = 0, \
diff --git a/arch/x86/include/asm/rwsem.h b/arch/x86/include/asm/rwsem.h
index d1e41b0f9b60..df4cd32b4cc6 100644
--- a/arch/x86/include/asm/rwsem.h
+++ b/arch/x86/include/asm/rwsem.h
@@ -37,26 +37,9 @@
37#endif 37#endif
38 38
39#ifdef __KERNEL__ 39#ifdef __KERNEL__
40
41#include <linux/list.h>
42#include <linux/spinlock.h>
43#include <linux/lockdep.h>
44#include <asm/asm.h> 40#include <asm/asm.h>
45 41
46struct rwsem_waiter;
47
48extern asmregparm struct rw_semaphore *
49 rwsem_down_read_failed(struct rw_semaphore *sem);
50extern asmregparm struct rw_semaphore *
51 rwsem_down_write_failed(struct rw_semaphore *sem);
52extern asmregparm struct rw_semaphore *
53 rwsem_wake(struct rw_semaphore *);
54extern asmregparm struct rw_semaphore *
55 rwsem_downgrade_wake(struct rw_semaphore *sem);
56
57/* 42/*
58 * the semaphore definition
59 *
60 * The bias values and the counter type limits the number of 43 * The bias values and the counter type limits the number of
61 * potential readers/writers to 32767 for 32 bits and 2147483647 44 * potential readers/writers to 32767 for 32 bits and 2147483647
62 * for 64 bits. 45 * for 64 bits.
@@ -74,43 +57,6 @@ extern asmregparm struct rw_semaphore *
74#define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS 57#define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS
75#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS) 58#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS)
76 59
77typedef signed long rwsem_count_t;
78
79struct rw_semaphore {
80 rwsem_count_t count;
81 spinlock_t wait_lock;
82 struct list_head wait_list;
83#ifdef CONFIG_DEBUG_LOCK_ALLOC
84 struct lockdep_map dep_map;
85#endif
86};
87
88#ifdef CONFIG_DEBUG_LOCK_ALLOC
89# define __RWSEM_DEP_MAP_INIT(lockname) , .dep_map = { .name = #lockname }
90#else
91# define __RWSEM_DEP_MAP_INIT(lockname)
92#endif
93
94
95#define __RWSEM_INITIALIZER(name) \
96{ \
97 RWSEM_UNLOCKED_VALUE, __SPIN_LOCK_UNLOCKED((name).wait_lock), \
98 LIST_HEAD_INIT((name).wait_list) __RWSEM_DEP_MAP_INIT(name) \
99}
100
101#define DECLARE_RWSEM(name) \
102 struct rw_semaphore name = __RWSEM_INITIALIZER(name)
103
104extern void __init_rwsem(struct rw_semaphore *sem, const char *name,
105 struct lock_class_key *key);
106
107#define init_rwsem(sem) \
108do { \
109 static struct lock_class_key __key; \
110 \
111 __init_rwsem((sem), #sem, &__key); \
112} while (0)
113
114/* 60/*
115 * lock for reading 61 * lock for reading
116 */ 62 */
@@ -133,7 +79,7 @@ static inline void __down_read(struct rw_semaphore *sem)
133 */ 79 */
134static inline int __down_read_trylock(struct rw_semaphore *sem) 80static inline int __down_read_trylock(struct rw_semaphore *sem)
135{ 81{
136 rwsem_count_t result, tmp; 82 long result, tmp;
137 asm volatile("# beginning __down_read_trylock\n\t" 83 asm volatile("# beginning __down_read_trylock\n\t"
138 " mov %0,%1\n\t" 84 " mov %0,%1\n\t"
139 "1:\n\t" 85 "1:\n\t"
@@ -155,7 +101,7 @@ static inline int __down_read_trylock(struct rw_semaphore *sem)
155 */ 101 */
156static inline void __down_write_nested(struct rw_semaphore *sem, int subclass) 102static inline void __down_write_nested(struct rw_semaphore *sem, int subclass)
157{ 103{
158 rwsem_count_t tmp; 104 long tmp;
159 asm volatile("# beginning down_write\n\t" 105 asm volatile("# beginning down_write\n\t"
160 LOCK_PREFIX " xadd %1,(%2)\n\t" 106 LOCK_PREFIX " xadd %1,(%2)\n\t"
161 /* adds 0xffff0001, returns the old value */ 107 /* adds 0xffff0001, returns the old value */
@@ -180,9 +126,8 @@ static inline void __down_write(struct rw_semaphore *sem)
180 */ 126 */
181static inline int __down_write_trylock(struct rw_semaphore *sem) 127static inline int __down_write_trylock(struct rw_semaphore *sem)
182{ 128{
183 rwsem_count_t ret = cmpxchg(&sem->count, 129 long ret = cmpxchg(&sem->count, RWSEM_UNLOCKED_VALUE,
184 RWSEM_UNLOCKED_VALUE, 130 RWSEM_ACTIVE_WRITE_BIAS);
185 RWSEM_ACTIVE_WRITE_BIAS);
186 if (ret == RWSEM_UNLOCKED_VALUE) 131 if (ret == RWSEM_UNLOCKED_VALUE)
187 return 1; 132 return 1;
188 return 0; 133 return 0;
@@ -193,7 +138,7 @@ static inline int __down_write_trylock(struct rw_semaphore *sem)
193 */ 138 */
194static inline void __up_read(struct rw_semaphore *sem) 139static inline void __up_read(struct rw_semaphore *sem)
195{ 140{
196 rwsem_count_t tmp; 141 long tmp;
197 asm volatile("# beginning __up_read\n\t" 142 asm volatile("# beginning __up_read\n\t"
198 LOCK_PREFIX " xadd %1,(%2)\n\t" 143 LOCK_PREFIX " xadd %1,(%2)\n\t"
199 /* subtracts 1, returns the old value */ 144 /* subtracts 1, returns the old value */
@@ -211,7 +156,7 @@ static inline void __up_read(struct rw_semaphore *sem)
211 */ 156 */
212static inline void __up_write(struct rw_semaphore *sem) 157static inline void __up_write(struct rw_semaphore *sem)
213{ 158{
214 rwsem_count_t tmp; 159 long tmp;
215 asm volatile("# beginning __up_write\n\t" 160 asm volatile("# beginning __up_write\n\t"
216 LOCK_PREFIX " xadd %1,(%2)\n\t" 161 LOCK_PREFIX " xadd %1,(%2)\n\t"
217 /* subtracts 0xffff0001, returns the old value */ 162 /* subtracts 0xffff0001, returns the old value */
@@ -247,8 +192,7 @@ static inline void __downgrade_write(struct rw_semaphore *sem)
247/* 192/*
248 * implement atomic add functionality 193 * implement atomic add functionality
249 */ 194 */
250static inline void rwsem_atomic_add(rwsem_count_t delta, 195static inline void rwsem_atomic_add(long delta, struct rw_semaphore *sem)
251 struct rw_semaphore *sem)
252{ 196{
253 asm volatile(LOCK_PREFIX _ASM_ADD "%1,%0" 197 asm volatile(LOCK_PREFIX _ASM_ADD "%1,%0"
254 : "+m" (sem->count) 198 : "+m" (sem->count)
@@ -258,10 +202,9 @@ static inline void rwsem_atomic_add(rwsem_count_t delta,
258/* 202/*
259 * implement exchange and add functionality 203 * implement exchange and add functionality
260 */ 204 */
261static inline rwsem_count_t rwsem_atomic_update(rwsem_count_t delta, 205static inline long rwsem_atomic_update(long delta, struct rw_semaphore *sem)
262 struct rw_semaphore *sem)
263{ 206{
264 rwsem_count_t tmp = delta; 207 long tmp = delta;
265 208
266 asm volatile(LOCK_PREFIX "xadd %0,%1" 209 asm volatile(LOCK_PREFIX "xadd %0,%1"
267 : "+r" (tmp), "+m" (sem->count) 210 : "+r" (tmp), "+m" (sem->count)
@@ -270,10 +213,5 @@ static inline rwsem_count_t rwsem_atomic_update(rwsem_count_t delta,
270 return tmp + delta; 213 return tmp + delta;
271} 214}
272 215
273static inline int rwsem_is_locked(struct rw_semaphore *sem)
274{
275 return (sem->count != 0);
276}
277
278#endif /* __KERNEL__ */ 216#endif /* __KERNEL__ */
279#endif /* _ASM_X86_RWSEM_H */ 217#endif /* _ASM_X86_RWSEM_H */
diff --git a/arch/xtensa/include/asm/rwsem.h b/arch/xtensa/include/asm/rwsem.h
index e39edf5c86f2..249619e7e7f2 100644
--- a/arch/xtensa/include/asm/rwsem.h
+++ b/arch/xtensa/include/asm/rwsem.h
@@ -17,44 +17,12 @@
17#error "Please don't include <asm/rwsem.h> directly, use <linux/rwsem.h> instead." 17#error "Please don't include <asm/rwsem.h> directly, use <linux/rwsem.h> instead."
18#endif 18#endif
19 19
20#include <linux/list.h>
21#include <linux/spinlock.h>
22#include <asm/atomic.h>
23#include <asm/system.h>
24
25/*
26 * the semaphore definition
27 */
28struct rw_semaphore {
29 signed long count;
30#define RWSEM_UNLOCKED_VALUE 0x00000000 20#define RWSEM_UNLOCKED_VALUE 0x00000000
31#define RWSEM_ACTIVE_BIAS 0x00000001 21#define RWSEM_ACTIVE_BIAS 0x00000001
32#define RWSEM_ACTIVE_MASK 0x0000ffff 22#define RWSEM_ACTIVE_MASK 0x0000ffff
33#define RWSEM_WAITING_BIAS (-0x00010000) 23#define RWSEM_WAITING_BIAS (-0x00010000)
34#define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS 24#define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS
35#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS) 25#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS)
36 spinlock_t wait_lock;
37 struct list_head wait_list;
38};
39
40#define __RWSEM_INITIALIZER(name) \
41 { RWSEM_UNLOCKED_VALUE, SPIN_LOCK_UNLOCKED, \
42 LIST_HEAD_INIT((name).wait_list) }
43
44#define DECLARE_RWSEM(name) \
45 struct rw_semaphore name = __RWSEM_INITIALIZER(name)
46
47extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem);
48extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem);
49extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem);
50extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem);
51
52static inline void init_rwsem(struct rw_semaphore *sem)
53{
54 sem->count = RWSEM_UNLOCKED_VALUE;
55 spin_lock_init(&sem->wait_lock);
56 INIT_LIST_HEAD(&sem->wait_list);
57}
58 26
59/* 27/*
60 * lock for reading 28 * lock for reading
@@ -160,9 +128,4 @@ static inline int rwsem_atomic_update(int delta, struct rw_semaphore *sem)
160 return atomic_add_return(delta, (atomic_t *)(&sem->count)); 128 return atomic_add_return(delta, (atomic_t *)(&sem->count));
161} 129}
162 130
163static inline int rwsem_is_locked(struct rw_semaphore *sem)
164{
165 return (sem->count != 0);
166}
167
168#endif /* _XTENSA_RWSEM_H */ 131#endif /* _XTENSA_RWSEM_H */
diff --git a/include/linux/kthread.h b/include/linux/kthread.h
index ce0775aa64c3..7ff16f7d3ed4 100644
--- a/include/linux/kthread.h
+++ b/include/linux/kthread.h
@@ -64,7 +64,7 @@ struct kthread_work {
64}; 64};
65 65
66#define KTHREAD_WORKER_INIT(worker) { \ 66#define KTHREAD_WORKER_INIT(worker) { \
67 .lock = SPIN_LOCK_UNLOCKED, \ 67 .lock = __SPIN_LOCK_UNLOCKED((worker).lock), \
68 .work_list = LIST_HEAD_INIT((worker).work_list), \ 68 .work_list = LIST_HEAD_INIT((worker).work_list), \
69 } 69 }
70 70
diff --git a/include/linux/rwlock_types.h b/include/linux/rwlock_types.h
index bd31808c7d8e..cc0072e93e36 100644
--- a/include/linux/rwlock_types.h
+++ b/include/linux/rwlock_types.h
@@ -43,14 +43,6 @@ typedef struct {
43 RW_DEP_MAP_INIT(lockname) } 43 RW_DEP_MAP_INIT(lockname) }
44#endif 44#endif
45 45
46/*
47 * RW_LOCK_UNLOCKED defeat lockdep state tracking and is hence
48 * deprecated.
49 *
50 * Please use DEFINE_RWLOCK() or __RW_LOCK_UNLOCKED() as appropriate.
51 */
52#define RW_LOCK_UNLOCKED __RW_LOCK_UNLOCKED(old_style_rw_init)
53
54#define DEFINE_RWLOCK(x) rwlock_t x = __RW_LOCK_UNLOCKED(x) 46#define DEFINE_RWLOCK(x) rwlock_t x = __RW_LOCK_UNLOCKED(x)
55 47
56#endif /* __LINUX_RWLOCK_TYPES_H */ 48#endif /* __LINUX_RWLOCK_TYPES_H */
diff --git a/include/linux/rwsem-spinlock.h b/include/linux/rwsem-spinlock.h
index bdfcc2527970..34701241b673 100644
--- a/include/linux/rwsem-spinlock.h
+++ b/include/linux/rwsem-spinlock.h
@@ -12,15 +12,7 @@
12#error "please don't include linux/rwsem-spinlock.h directly, use linux/rwsem.h instead" 12#error "please don't include linux/rwsem-spinlock.h directly, use linux/rwsem.h instead"
13#endif 13#endif
14 14
15#include <linux/spinlock.h>
16#include <linux/list.h>
17
18#ifdef __KERNEL__ 15#ifdef __KERNEL__
19
20#include <linux/types.h>
21
22struct rwsem_waiter;
23
24/* 16/*
25 * the rw-semaphore definition 17 * the rw-semaphore definition
26 * - if activity is 0 then there are no active readers or writers 18 * - if activity is 0 then there are no active readers or writers
@@ -37,28 +29,7 @@ struct rw_semaphore {
37#endif 29#endif
38}; 30};
39 31
40#ifdef CONFIG_DEBUG_LOCK_ALLOC 32#define RWSEM_UNLOCKED_VALUE 0x00000000
41# define __RWSEM_DEP_MAP_INIT(lockname) , .dep_map = { .name = #lockname }
42#else
43# define __RWSEM_DEP_MAP_INIT(lockname)
44#endif
45
46#define __RWSEM_INITIALIZER(name) \
47{ 0, __SPIN_LOCK_UNLOCKED(name.wait_lock), LIST_HEAD_INIT((name).wait_list) \
48 __RWSEM_DEP_MAP_INIT(name) }
49
50#define DECLARE_RWSEM(name) \
51 struct rw_semaphore name = __RWSEM_INITIALIZER(name)
52
53extern void __init_rwsem(struct rw_semaphore *sem, const char *name,
54 struct lock_class_key *key);
55
56#define init_rwsem(sem) \
57do { \
58 static struct lock_class_key __key; \
59 \
60 __init_rwsem((sem), #sem, &__key); \
61} while (0)
62 33
63extern void __down_read(struct rw_semaphore *sem); 34extern void __down_read(struct rw_semaphore *sem);
64extern int __down_read_trylock(struct rw_semaphore *sem); 35extern int __down_read_trylock(struct rw_semaphore *sem);
diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h
index efd348fe8ca7..a8afe9cd000c 100644
--- a/include/linux/rwsem.h
+++ b/include/linux/rwsem.h
@@ -11,6 +11,9 @@
11 11
12#include <linux/types.h> 12#include <linux/types.h>
13#include <linux/kernel.h> 13#include <linux/kernel.h>
14#include <linux/list.h>
15#include <linux/spinlock.h>
16
14#include <asm/system.h> 17#include <asm/system.h>
15#include <asm/atomic.h> 18#include <asm/atomic.h>
16 19
@@ -19,9 +22,57 @@ struct rw_semaphore;
19#ifdef CONFIG_RWSEM_GENERIC_SPINLOCK 22#ifdef CONFIG_RWSEM_GENERIC_SPINLOCK
20#include <linux/rwsem-spinlock.h> /* use a generic implementation */ 23#include <linux/rwsem-spinlock.h> /* use a generic implementation */
21#else 24#else
22#include <asm/rwsem.h> /* use an arch-specific implementation */ 25/* All arch specific implementations share the same struct */
26struct rw_semaphore {
27 long count;
28 spinlock_t wait_lock;
29 struct list_head wait_list;
30#ifdef CONFIG_DEBUG_LOCK_ALLOC
31 struct lockdep_map dep_map;
32#endif
33};
34
35extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem);
36extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem);
37extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *);
38extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem);
39
40/* Include the arch specific part */
41#include <asm/rwsem.h>
42
43/* In all implementations count != 0 means locked */
44static inline int rwsem_is_locked(struct rw_semaphore *sem)
45{
46 return sem->count != 0;
47}
48
49#endif
50
51/* Common initializer macros and functions */
52
53#ifdef CONFIG_DEBUG_LOCK_ALLOC
54# define __RWSEM_DEP_MAP_INIT(lockname) , .dep_map = { .name = #lockname }
55#else
56# define __RWSEM_DEP_MAP_INIT(lockname)
23#endif 57#endif
24 58
59#define __RWSEM_INITIALIZER(name) \
60 { RWSEM_UNLOCKED_VALUE, __SPIN_LOCK_UNLOCKED(name.wait_lock), \
61 LIST_HEAD_INIT((name).wait_list) __RWSEM_DEP_MAP_INIT(name) }
62
63#define DECLARE_RWSEM(name) \
64 struct rw_semaphore name = __RWSEM_INITIALIZER(name)
65
66extern void __init_rwsem(struct rw_semaphore *sem, const char *name,
67 struct lock_class_key *key);
68
69#define init_rwsem(sem) \
70do { \
71 static struct lock_class_key __key; \
72 \
73 __init_rwsem((sem), #sem, &__key); \
74} while (0)
75
25/* 76/*
26 * lock for reading 77 * lock for reading
27 */ 78 */
diff --git a/include/linux/spinlock_types.h b/include/linux/spinlock_types.h
index 851b7783720d..73548eb13a5d 100644
--- a/include/linux/spinlock_types.h
+++ b/include/linux/spinlock_types.h
@@ -81,14 +81,6 @@ typedef struct spinlock {
81#define __SPIN_LOCK_UNLOCKED(lockname) \ 81#define __SPIN_LOCK_UNLOCKED(lockname) \
82 (spinlock_t ) __SPIN_LOCK_INITIALIZER(lockname) 82 (spinlock_t ) __SPIN_LOCK_INITIALIZER(lockname)
83 83
84/*
85 * SPIN_LOCK_UNLOCKED defeats lockdep state tracking and is hence
86 * deprecated.
87 * Please use DEFINE_SPINLOCK() or __SPIN_LOCK_UNLOCKED() as
88 * appropriate.
89 */
90#define SPIN_LOCK_UNLOCKED __SPIN_LOCK_UNLOCKED(old_style_spin_init)
91
92#define DEFINE_SPINLOCK(x) spinlock_t x = __SPIN_LOCK_UNLOCKED(x) 84#define DEFINE_SPINLOCK(x) spinlock_t x = __SPIN_LOCK_UNLOCKED(x)
93 85
94#include <linux/rwlock_types.h> 86#include <linux/rwlock_types.h>
diff --git a/kernel/cred.c b/kernel/cred.c
index 3a9d6dd53a6c..2343c132c5a7 100644
--- a/kernel/cred.c
+++ b/kernel/cred.c
@@ -35,7 +35,7 @@ static struct kmem_cache *cred_jar;
35static struct thread_group_cred init_tgcred = { 35static struct thread_group_cred init_tgcred = {
36 .usage = ATOMIC_INIT(2), 36 .usage = ATOMIC_INIT(2),
37 .tgid = 0, 37 .tgid = 0,
38 .lock = SPIN_LOCK_UNLOCKED, 38 .lock = __SPIN_LOCK_UNLOCKED(init_cred.tgcred.lock),
39}; 39};
40#endif 40#endif
41 41
diff --git a/kernel/futex.c b/kernel/futex.c
index e9251d934f7d..bda415715382 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -1555,10 +1555,10 @@ static int fixup_pi_state_owner(u32 __user *uaddr, struct futex_q *q,
1555 1555
1556 /* 1556 /*
1557 * We are here either because we stole the rtmutex from the 1557 * We are here either because we stole the rtmutex from the
1558 * pending owner or we are the pending owner which failed to 1558 * previous highest priority waiter or we are the highest priority
1559 * get the rtmutex. We have to replace the pending owner TID 1559 * waiter but failed to get the rtmutex the first time.
1560 * in the user space variable. This must be atomic as we have 1560 * We have to replace the newowner TID in the user space variable.
1561 * to preserve the owner died bit here. 1561 * This must be atomic as we have to preserve the owner died bit here.
1562 * 1562 *
1563 * Note: We write the user space value _before_ changing the pi_state 1563 * Note: We write the user space value _before_ changing the pi_state
1564 * because we can fault here. Imagine swapped out pages or a fork 1564 * because we can fault here. Imagine swapped out pages or a fork
@@ -1605,8 +1605,8 @@ retry:
1605 1605
1606 /* 1606 /*
1607 * To handle the page fault we need to drop the hash bucket 1607 * To handle the page fault we need to drop the hash bucket
1608 * lock here. That gives the other task (either the pending 1608 * lock here. That gives the other task (either the highest priority
1609 * owner itself or the task which stole the rtmutex) the 1609 * waiter itself or the task which stole the rtmutex) the
1610 * chance to try the fixup of the pi_state. So once we are 1610 * chance to try the fixup of the pi_state. So once we are
1611 * back from handling the fault we need to check the pi_state 1611 * back from handling the fault we need to check the pi_state
1612 * after reacquiring the hash bucket lock and before trying to 1612 * after reacquiring the hash bucket lock and before trying to
@@ -1682,18 +1682,20 @@ static int fixup_owner(u32 __user *uaddr, struct futex_q *q, int locked)
1682 /* 1682 /*
1683 * pi_state is incorrect, some other task did a lock steal and 1683 * pi_state is incorrect, some other task did a lock steal and
1684 * we returned due to timeout or signal without taking the 1684 * we returned due to timeout or signal without taking the
1685 * rt_mutex. Too late. We can access the rt_mutex_owner without 1685 * rt_mutex. Too late.
1686 * locking, as the other task is now blocked on the hash bucket
1687 * lock. Fix the state up.
1688 */ 1686 */
1687 raw_spin_lock(&q->pi_state->pi_mutex.wait_lock);
1689 owner = rt_mutex_owner(&q->pi_state->pi_mutex); 1688 owner = rt_mutex_owner(&q->pi_state->pi_mutex);
1689 if (!owner)
1690 owner = rt_mutex_next_owner(&q->pi_state->pi_mutex);
1691 raw_spin_unlock(&q->pi_state->pi_mutex.wait_lock);
1690 ret = fixup_pi_state_owner(uaddr, q, owner); 1692 ret = fixup_pi_state_owner(uaddr, q, owner);
1691 goto out; 1693 goto out;
1692 } 1694 }
1693 1695
1694 /* 1696 /*
1695 * Paranoia check. If we did not take the lock, then we should not be 1697 * Paranoia check. If we did not take the lock, then we should not be
1696 * the owner, nor the pending owner, of the rt_mutex. 1698 * the owner of the rt_mutex.
1697 */ 1699 */
1698 if (rt_mutex_owner(&q->pi_state->pi_mutex) == current) 1700 if (rt_mutex_owner(&q->pi_state->pi_mutex) == current)
1699 printk(KERN_ERR "fixup_owner: ret = %d pi-mutex: %p " 1701 printk(KERN_ERR "fixup_owner: ret = %d pi-mutex: %p "
diff --git a/kernel/rtmutex-debug.c b/kernel/rtmutex-debug.c
index ddabb54bb5c8..3c7cbc2c33be 100644
--- a/kernel/rtmutex-debug.c
+++ b/kernel/rtmutex-debug.c
@@ -215,7 +215,6 @@ void debug_rt_mutex_free_waiter(struct rt_mutex_waiter *waiter)
215 put_pid(waiter->deadlock_task_pid); 215 put_pid(waiter->deadlock_task_pid);
216 TRACE_WARN_ON(!plist_node_empty(&waiter->list_entry)); 216 TRACE_WARN_ON(!plist_node_empty(&waiter->list_entry));
217 TRACE_WARN_ON(!plist_node_empty(&waiter->pi_list_entry)); 217 TRACE_WARN_ON(!plist_node_empty(&waiter->pi_list_entry));
218 TRACE_WARN_ON(waiter->task);
219 memset(waiter, 0x22, sizeof(*waiter)); 218 memset(waiter, 0x22, sizeof(*waiter));
220} 219}
221 220
diff --git a/kernel/rtmutex-tester.c b/kernel/rtmutex-tester.c
index 66cb89bc5ef1..5c9ccd380966 100644
--- a/kernel/rtmutex-tester.c
+++ b/kernel/rtmutex-tester.c
@@ -9,7 +9,6 @@
9#include <linux/kthread.h> 9#include <linux/kthread.h>
10#include <linux/module.h> 10#include <linux/module.h>
11#include <linux/sched.h> 11#include <linux/sched.h>
12#include <linux/smp_lock.h>
13#include <linux/spinlock.h> 12#include <linux/spinlock.h>
14#include <linux/sysdev.h> 13#include <linux/sysdev.h>
15#include <linux/timer.h> 14#include <linux/timer.h>
@@ -27,7 +26,6 @@ struct test_thread_data {
27 int opcode; 26 int opcode;
28 int opdata; 27 int opdata;
29 int mutexes[MAX_RT_TEST_MUTEXES]; 28 int mutexes[MAX_RT_TEST_MUTEXES];
30 int bkl;
31 int event; 29 int event;
32 struct sys_device sysdev; 30 struct sys_device sysdev;
33}; 31};
@@ -46,9 +44,8 @@ enum test_opcodes {
46 RTTEST_LOCKINTNOWAIT, /* 6 Lock interruptible no wait in wakeup, data = lockindex */ 44 RTTEST_LOCKINTNOWAIT, /* 6 Lock interruptible no wait in wakeup, data = lockindex */
47 RTTEST_LOCKCONT, /* 7 Continue locking after the wakeup delay */ 45 RTTEST_LOCKCONT, /* 7 Continue locking after the wakeup delay */
48 RTTEST_UNLOCK, /* 8 Unlock, data = lockindex */ 46 RTTEST_UNLOCK, /* 8 Unlock, data = lockindex */
49 RTTEST_LOCKBKL, /* 9 Lock BKL */ 47 /* 9, 10 - reserved for BKL commemoration */
50 RTTEST_UNLOCKBKL, /* 10 Unlock BKL */ 48 RTTEST_SIGNAL = 11, /* 11 Signal other test thread, data = thread id */
51 RTTEST_SIGNAL, /* 11 Signal other test thread, data = thread id */
52 RTTEST_RESETEVENT = 98, /* 98 Reset event counter */ 49 RTTEST_RESETEVENT = 98, /* 98 Reset event counter */
53 RTTEST_RESET = 99, /* 99 Reset all pending operations */ 50 RTTEST_RESET = 99, /* 99 Reset all pending operations */
54}; 51};
@@ -74,13 +71,6 @@ static int handle_op(struct test_thread_data *td, int lockwakeup)
74 td->mutexes[i] = 0; 71 td->mutexes[i] = 0;
75 } 72 }
76 } 73 }
77
78 if (!lockwakeup && td->bkl == 4) {
79#ifdef CONFIG_LOCK_KERNEL
80 unlock_kernel();
81#endif
82 td->bkl = 0;
83 }
84 return 0; 74 return 0;
85 75
86 case RTTEST_RESETEVENT: 76 case RTTEST_RESETEVENT:
@@ -131,25 +121,6 @@ static int handle_op(struct test_thread_data *td, int lockwakeup)
131 td->mutexes[id] = 0; 121 td->mutexes[id] = 0;
132 return 0; 122 return 0;
133 123
134 case RTTEST_LOCKBKL:
135 if (td->bkl)
136 return 0;
137 td->bkl = 1;
138#ifdef CONFIG_LOCK_KERNEL
139 lock_kernel();
140#endif
141 td->bkl = 4;
142 return 0;
143
144 case RTTEST_UNLOCKBKL:
145 if (td->bkl != 4)
146 break;
147#ifdef CONFIG_LOCK_KERNEL
148 unlock_kernel();
149#endif
150 td->bkl = 0;
151 return 0;
152
153 default: 124 default:
154 break; 125 break;
155 } 126 }
@@ -196,7 +167,6 @@ void schedule_rt_mutex_test(struct rt_mutex *mutex)
196 td->event = atomic_add_return(1, &rttest_event); 167 td->event = atomic_add_return(1, &rttest_event);
197 break; 168 break;
198 169
199 case RTTEST_LOCKBKL:
200 default: 170 default:
201 break; 171 break;
202 } 172 }
@@ -229,8 +199,6 @@ void schedule_rt_mutex_test(struct rt_mutex *mutex)
229 td->event = atomic_add_return(1, &rttest_event); 199 td->event = atomic_add_return(1, &rttest_event);
230 return; 200 return;
231 201
232 case RTTEST_LOCKBKL:
233 return;
234 default: 202 default:
235 return; 203 return;
236 } 204 }
@@ -380,11 +348,11 @@ static ssize_t sysfs_test_status(struct sys_device *dev, struct sysdev_attribute
380 spin_lock(&rttest_lock); 348 spin_lock(&rttest_lock);
381 349
382 curr += sprintf(curr, 350 curr += sprintf(curr,
383 "O: %4d, E:%8d, S: 0x%08lx, P: %4d, N: %4d, B: %p, K: %d, M:", 351 "O: %4d, E:%8d, S: 0x%08lx, P: %4d, N: %4d, B: %p, M:",
384 td->opcode, td->event, tsk->state, 352 td->opcode, td->event, tsk->state,
385 (MAX_RT_PRIO - 1) - tsk->prio, 353 (MAX_RT_PRIO - 1) - tsk->prio,
386 (MAX_RT_PRIO - 1) - tsk->normal_prio, 354 (MAX_RT_PRIO - 1) - tsk->normal_prio,
387 tsk->pi_blocked_on, td->bkl); 355 tsk->pi_blocked_on);
388 356
389 for (i = MAX_RT_TEST_MUTEXES - 1; i >=0 ; i--) 357 for (i = MAX_RT_TEST_MUTEXES - 1; i >=0 ; i--)
390 curr += sprintf(curr, "%d", td->mutexes[i]); 358 curr += sprintf(curr, "%d", td->mutexes[i]);
diff --git a/kernel/rtmutex.c b/kernel/rtmutex.c
index a9604815786a..ab449117aaf2 100644
--- a/kernel/rtmutex.c
+++ b/kernel/rtmutex.c
@@ -20,41 +20,34 @@
20/* 20/*
21 * lock->owner state tracking: 21 * lock->owner state tracking:
22 * 22 *
23 * lock->owner holds the task_struct pointer of the owner. Bit 0 and 1 23 * lock->owner holds the task_struct pointer of the owner. Bit 0
24 * are used to keep track of the "owner is pending" and "lock has 24 * is used to keep track of the "lock has waiters" state.
25 * waiters" state.
26 * 25 *
27 * owner bit1 bit0 26 * owner bit0
28 * NULL 0 0 lock is free (fast acquire possible) 27 * NULL 0 lock is free (fast acquire possible)
29 * NULL 0 1 invalid state 28 * NULL 1 lock is free and has waiters and the top waiter
30 * NULL 1 0 Transitional State* 29 * is going to take the lock*
31 * NULL 1 1 invalid state 30 * taskpointer 0 lock is held (fast release possible)
32 * taskpointer 0 0 lock is held (fast release possible) 31 * taskpointer 1 lock is held and has waiters**
33 * taskpointer 0 1 task is pending owner
34 * taskpointer 1 0 lock is held and has waiters
35 * taskpointer 1 1 task is pending owner and lock has more waiters
36 *
37 * Pending ownership is assigned to the top (highest priority)
38 * waiter of the lock, when the lock is released. The thread is woken
39 * up and can now take the lock. Until the lock is taken (bit 0
40 * cleared) a competing higher priority thread can steal the lock
41 * which puts the woken up thread back on the waiters list.
42 * 32 *
43 * The fast atomic compare exchange based acquire and release is only 33 * The fast atomic compare exchange based acquire and release is only
44 * possible when bit 0 and 1 of lock->owner are 0. 34 * possible when bit 0 of lock->owner is 0.
35 *
36 * (*) It also can be a transitional state when grabbing the lock
37 * with ->wait_lock is held. To prevent any fast path cmpxchg to the lock,
38 * we need to set the bit0 before looking at the lock, and the owner may be
39 * NULL in this small time, hence this can be a transitional state.
45 * 40 *
46 * (*) There's a small time where the owner can be NULL and the 41 * (**) There is a small time when bit 0 is set but there are no
47 * "lock has waiters" bit is set. This can happen when grabbing the lock. 42 * waiters. This can happen when grabbing the lock in the slow path.
48 * To prevent a cmpxchg of the owner releasing the lock, we need to set this 43 * To prevent a cmpxchg of the owner releasing the lock, we need to
49 * bit before looking at the lock, hence the reason this is a transitional 44 * set this bit before looking at the lock.
50 * state.
51 */ 45 */
52 46
53static void 47static void
54rt_mutex_set_owner(struct rt_mutex *lock, struct task_struct *owner, 48rt_mutex_set_owner(struct rt_mutex *lock, struct task_struct *owner)
55 unsigned long mask)
56{ 49{
57 unsigned long val = (unsigned long)owner | mask; 50 unsigned long val = (unsigned long)owner;
58 51
59 if (rt_mutex_has_waiters(lock)) 52 if (rt_mutex_has_waiters(lock))
60 val |= RT_MUTEX_HAS_WAITERS; 53 val |= RT_MUTEX_HAS_WAITERS;
@@ -203,15 +196,14 @@ static int rt_mutex_adjust_prio_chain(struct task_struct *task,
203 * reached or the state of the chain has changed while we 196 * reached or the state of the chain has changed while we
204 * dropped the locks. 197 * dropped the locks.
205 */ 198 */
206 if (!waiter || !waiter->task) 199 if (!waiter)
207 goto out_unlock_pi; 200 goto out_unlock_pi;
208 201
209 /* 202 /*
210 * Check the orig_waiter state. After we dropped the locks, 203 * Check the orig_waiter state. After we dropped the locks,
211 * the previous owner of the lock might have released the lock 204 * the previous owner of the lock might have released the lock.
212 * and made us the pending owner:
213 */ 205 */
214 if (orig_waiter && !orig_waiter->task) 206 if (orig_waiter && !rt_mutex_owner(orig_lock))
215 goto out_unlock_pi; 207 goto out_unlock_pi;
216 208
217 /* 209 /*
@@ -254,6 +246,17 @@ static int rt_mutex_adjust_prio_chain(struct task_struct *task,
254 246
255 /* Release the task */ 247 /* Release the task */
256 raw_spin_unlock_irqrestore(&task->pi_lock, flags); 248 raw_spin_unlock_irqrestore(&task->pi_lock, flags);
249 if (!rt_mutex_owner(lock)) {
250 /*
251 * If the requeue above changed the top waiter, then we need
252 * to wake the new top waiter up to try to get the lock.
253 */
254
255 if (top_waiter != rt_mutex_top_waiter(lock))
256 wake_up_process(rt_mutex_top_waiter(lock)->task);
257 raw_spin_unlock(&lock->wait_lock);
258 goto out_put_task;
259 }
257 put_task_struct(task); 260 put_task_struct(task);
258 261
259 /* Grab the next task */ 262 /* Grab the next task */
@@ -296,78 +299,16 @@ static int rt_mutex_adjust_prio_chain(struct task_struct *task,
296} 299}
297 300
298/* 301/*
299 * Optimization: check if we can steal the lock from the
300 * assigned pending owner [which might not have taken the
301 * lock yet]:
302 */
303static inline int try_to_steal_lock(struct rt_mutex *lock,
304 struct task_struct *task)
305{
306 struct task_struct *pendowner = rt_mutex_owner(lock);
307 struct rt_mutex_waiter *next;
308 unsigned long flags;
309
310 if (!rt_mutex_owner_pending(lock))
311 return 0;
312
313 if (pendowner == task)
314 return 1;
315
316 raw_spin_lock_irqsave(&pendowner->pi_lock, flags);
317 if (task->prio >= pendowner->prio) {
318 raw_spin_unlock_irqrestore(&pendowner->pi_lock, flags);
319 return 0;
320 }
321
322 /*
323 * Check if a waiter is enqueued on the pending owners
324 * pi_waiters list. Remove it and readjust pending owners
325 * priority.
326 */
327 if (likely(!rt_mutex_has_waiters(lock))) {
328 raw_spin_unlock_irqrestore(&pendowner->pi_lock, flags);
329 return 1;
330 }
331
332 /* No chain handling, pending owner is not blocked on anything: */
333 next = rt_mutex_top_waiter(lock);
334 plist_del(&next->pi_list_entry, &pendowner->pi_waiters);
335 __rt_mutex_adjust_prio(pendowner);
336 raw_spin_unlock_irqrestore(&pendowner->pi_lock, flags);
337
338 /*
339 * We are going to steal the lock and a waiter was
340 * enqueued on the pending owners pi_waiters queue. So
341 * we have to enqueue this waiter into
342 * task->pi_waiters list. This covers the case,
343 * where task is boosted because it holds another
344 * lock and gets unboosted because the booster is
345 * interrupted, so we would delay a waiter with higher
346 * priority as task->normal_prio.
347 *
348 * Note: in the rare case of a SCHED_OTHER task changing
349 * its priority and thus stealing the lock, next->task
350 * might be task:
351 */
352 if (likely(next->task != task)) {
353 raw_spin_lock_irqsave(&task->pi_lock, flags);
354 plist_add(&next->pi_list_entry, &task->pi_waiters);
355 __rt_mutex_adjust_prio(task);
356 raw_spin_unlock_irqrestore(&task->pi_lock, flags);
357 }
358 return 1;
359}
360
361/*
362 * Try to take an rt-mutex 302 * Try to take an rt-mutex
363 * 303 *
364 * This fails
365 * - when the lock has a real owner
366 * - when a different pending owner exists and has higher priority than current
367 *
368 * Must be called with lock->wait_lock held. 304 * Must be called with lock->wait_lock held.
305 *
306 * @lock: the lock to be acquired.
307 * @task: the task which wants to acquire the lock
308 * @waiter: the waiter that is queued to the lock's wait list. (could be NULL)
369 */ 309 */
370static int try_to_take_rt_mutex(struct rt_mutex *lock) 310static int try_to_take_rt_mutex(struct rt_mutex *lock, struct task_struct *task,
311 struct rt_mutex_waiter *waiter)
371{ 312{
372 /* 313 /*
373 * We have to be careful here if the atomic speedups are 314 * We have to be careful here if the atomic speedups are
@@ -390,15 +331,52 @@ static int try_to_take_rt_mutex(struct rt_mutex *lock)
390 */ 331 */
391 mark_rt_mutex_waiters(lock); 332 mark_rt_mutex_waiters(lock);
392 333
393 if (rt_mutex_owner(lock) && !try_to_steal_lock(lock, current)) 334 if (rt_mutex_owner(lock))
394 return 0; 335 return 0;
395 336
337 /*
338 * It will get the lock because of one of these conditions:
339 * 1) there is no waiter
340 * 2) higher priority than waiters
341 * 3) it is top waiter
342 */
343 if (rt_mutex_has_waiters(lock)) {
344 if (task->prio >= rt_mutex_top_waiter(lock)->list_entry.prio) {
345 if (!waiter || waiter != rt_mutex_top_waiter(lock))
346 return 0;
347 }
348 }
349
350 if (waiter || rt_mutex_has_waiters(lock)) {
351 unsigned long flags;
352 struct rt_mutex_waiter *top;
353
354 raw_spin_lock_irqsave(&task->pi_lock, flags);
355
356 /* remove the queued waiter. */
357 if (waiter) {
358 plist_del(&waiter->list_entry, &lock->wait_list);
359 task->pi_blocked_on = NULL;
360 }
361
362 /*
363 * We have to enqueue the top waiter(if it exists) into
364 * task->pi_waiters list.
365 */
366 if (rt_mutex_has_waiters(lock)) {
367 top = rt_mutex_top_waiter(lock);
368 top->pi_list_entry.prio = top->list_entry.prio;
369 plist_add(&top->pi_list_entry, &task->pi_waiters);
370 }
371 raw_spin_unlock_irqrestore(&task->pi_lock, flags);
372 }
373
396 /* We got the lock. */ 374 /* We got the lock. */
397 debug_rt_mutex_lock(lock); 375 debug_rt_mutex_lock(lock);
398 376
399 rt_mutex_set_owner(lock, current, 0); 377 rt_mutex_set_owner(lock, task);
400 378
401 rt_mutex_deadlock_account_lock(lock, current); 379 rt_mutex_deadlock_account_lock(lock, task);
402 380
403 return 1; 381 return 1;
404} 382}
@@ -436,6 +414,9 @@ static int task_blocks_on_rt_mutex(struct rt_mutex *lock,
436 414
437 raw_spin_unlock_irqrestore(&task->pi_lock, flags); 415 raw_spin_unlock_irqrestore(&task->pi_lock, flags);
438 416
417 if (!owner)
418 return 0;
419
439 if (waiter == rt_mutex_top_waiter(lock)) { 420 if (waiter == rt_mutex_top_waiter(lock)) {
440 raw_spin_lock_irqsave(&owner->pi_lock, flags); 421 raw_spin_lock_irqsave(&owner->pi_lock, flags);
441 plist_del(&top_waiter->pi_list_entry, &owner->pi_waiters); 422 plist_del(&top_waiter->pi_list_entry, &owner->pi_waiters);
@@ -472,21 +453,18 @@ static int task_blocks_on_rt_mutex(struct rt_mutex *lock,
472/* 453/*
473 * Wake up the next waiter on the lock. 454 * Wake up the next waiter on the lock.
474 * 455 *
475 * Remove the top waiter from the current tasks waiter list and from 456 * Remove the top waiter from the current tasks waiter list and wake it up.
476 * the lock waiter list. Set it as pending owner. Then wake it up.
477 * 457 *
478 * Called with lock->wait_lock held. 458 * Called with lock->wait_lock held.
479 */ 459 */
480static void wakeup_next_waiter(struct rt_mutex *lock) 460static void wakeup_next_waiter(struct rt_mutex *lock)
481{ 461{
482 struct rt_mutex_waiter *waiter; 462 struct rt_mutex_waiter *waiter;
483 struct task_struct *pendowner;
484 unsigned long flags; 463 unsigned long flags;
485 464
486 raw_spin_lock_irqsave(&current->pi_lock, flags); 465 raw_spin_lock_irqsave(&current->pi_lock, flags);
487 466
488 waiter = rt_mutex_top_waiter(lock); 467 waiter = rt_mutex_top_waiter(lock);
489 plist_del(&waiter->list_entry, &lock->wait_list);
490 468
491 /* 469 /*
492 * Remove it from current->pi_waiters. We do not adjust a 470 * Remove it from current->pi_waiters. We do not adjust a
@@ -495,43 +473,19 @@ static void wakeup_next_waiter(struct rt_mutex *lock)
495 * lock->wait_lock. 473 * lock->wait_lock.
496 */ 474 */
497 plist_del(&waiter->pi_list_entry, &current->pi_waiters); 475 plist_del(&waiter->pi_list_entry, &current->pi_waiters);
498 pendowner = waiter->task;
499 waiter->task = NULL;
500 476
501 rt_mutex_set_owner(lock, pendowner, RT_MUTEX_OWNER_PENDING); 477 rt_mutex_set_owner(lock, NULL);
502 478
503 raw_spin_unlock_irqrestore(&current->pi_lock, flags); 479 raw_spin_unlock_irqrestore(&current->pi_lock, flags);
504 480
505 /* 481 wake_up_process(waiter->task);
506 * Clear the pi_blocked_on variable and enqueue a possible
507 * waiter into the pi_waiters list of the pending owner. This
508 * prevents that in case the pending owner gets unboosted a
509 * waiter with higher priority than pending-owner->normal_prio
510 * is blocked on the unboosted (pending) owner.
511 */
512 raw_spin_lock_irqsave(&pendowner->pi_lock, flags);
513
514 WARN_ON(!pendowner->pi_blocked_on);
515 WARN_ON(pendowner->pi_blocked_on != waiter);
516 WARN_ON(pendowner->pi_blocked_on->lock != lock);
517
518 pendowner->pi_blocked_on = NULL;
519
520 if (rt_mutex_has_waiters(lock)) {
521 struct rt_mutex_waiter *next;
522
523 next = rt_mutex_top_waiter(lock);
524 plist_add(&next->pi_list_entry, &pendowner->pi_waiters);
525 }
526 raw_spin_unlock_irqrestore(&pendowner->pi_lock, flags);
527
528 wake_up_process(pendowner);
529} 482}
530 483
531/* 484/*
532 * Remove a waiter from a lock 485 * Remove a waiter from a lock and give up
533 * 486 *
534 * Must be called with lock->wait_lock held 487 * Must be called with lock->wait_lock held and
488 * have just failed to try_to_take_rt_mutex().
535 */ 489 */
536static void remove_waiter(struct rt_mutex *lock, 490static void remove_waiter(struct rt_mutex *lock,
537 struct rt_mutex_waiter *waiter) 491 struct rt_mutex_waiter *waiter)
@@ -543,11 +497,13 @@ static void remove_waiter(struct rt_mutex *lock,
543 497
544 raw_spin_lock_irqsave(&current->pi_lock, flags); 498 raw_spin_lock_irqsave(&current->pi_lock, flags);
545 plist_del(&waiter->list_entry, &lock->wait_list); 499 plist_del(&waiter->list_entry, &lock->wait_list);
546 waiter->task = NULL;
547 current->pi_blocked_on = NULL; 500 current->pi_blocked_on = NULL;
548 raw_spin_unlock_irqrestore(&current->pi_lock, flags); 501 raw_spin_unlock_irqrestore(&current->pi_lock, flags);
549 502
550 if (first && owner != current) { 503 if (!owner)
504 return;
505
506 if (first) {
551 507
552 raw_spin_lock_irqsave(&owner->pi_lock, flags); 508 raw_spin_lock_irqsave(&owner->pi_lock, flags);
553 509
@@ -614,21 +570,19 @@ void rt_mutex_adjust_pi(struct task_struct *task)
614 * or TASK_UNINTERRUPTIBLE) 570 * or TASK_UNINTERRUPTIBLE)
615 * @timeout: the pre-initialized and started timer, or NULL for none 571 * @timeout: the pre-initialized and started timer, or NULL for none
616 * @waiter: the pre-initialized rt_mutex_waiter 572 * @waiter: the pre-initialized rt_mutex_waiter
617 * @detect_deadlock: passed to task_blocks_on_rt_mutex
618 * 573 *
619 * lock->wait_lock must be held by the caller. 574 * lock->wait_lock must be held by the caller.
620 */ 575 */
621static int __sched 576static int __sched
622__rt_mutex_slowlock(struct rt_mutex *lock, int state, 577__rt_mutex_slowlock(struct rt_mutex *lock, int state,
623 struct hrtimer_sleeper *timeout, 578 struct hrtimer_sleeper *timeout,
624 struct rt_mutex_waiter *waiter, 579 struct rt_mutex_waiter *waiter)
625 int detect_deadlock)
626{ 580{
627 int ret = 0; 581 int ret = 0;
628 582
629 for (;;) { 583 for (;;) {
630 /* Try to acquire the lock: */ 584 /* Try to acquire the lock: */
631 if (try_to_take_rt_mutex(lock)) 585 if (try_to_take_rt_mutex(lock, current, waiter))
632 break; 586 break;
633 587
634 /* 588 /*
@@ -645,39 +599,11 @@ __rt_mutex_slowlock(struct rt_mutex *lock, int state,
645 break; 599 break;
646 } 600 }
647 601
648 /*
649 * waiter->task is NULL the first time we come here and
650 * when we have been woken up by the previous owner
651 * but the lock got stolen by a higher prio task.
652 */
653 if (!waiter->task) {
654 ret = task_blocks_on_rt_mutex(lock, waiter, current,
655 detect_deadlock);
656 /*
657 * If we got woken up by the owner then start loop
658 * all over without going into schedule to try
659 * to get the lock now:
660 */
661 if (unlikely(!waiter->task)) {
662 /*
663 * Reset the return value. We might
664 * have returned with -EDEADLK and the
665 * owner released the lock while we
666 * were walking the pi chain.
667 */
668 ret = 0;
669 continue;
670 }
671 if (unlikely(ret))
672 break;
673 }
674
675 raw_spin_unlock(&lock->wait_lock); 602 raw_spin_unlock(&lock->wait_lock);
676 603
677 debug_rt_mutex_print_deadlock(waiter); 604 debug_rt_mutex_print_deadlock(waiter);
678 605
679 if (waiter->task) 606 schedule_rt_mutex(lock);
680 schedule_rt_mutex(lock);
681 607
682 raw_spin_lock(&lock->wait_lock); 608 raw_spin_lock(&lock->wait_lock);
683 set_current_state(state); 609 set_current_state(state);
@@ -698,12 +624,11 @@ rt_mutex_slowlock(struct rt_mutex *lock, int state,
698 int ret = 0; 624 int ret = 0;
699 625
700 debug_rt_mutex_init_waiter(&waiter); 626 debug_rt_mutex_init_waiter(&waiter);
701 waiter.task = NULL;
702 627
703 raw_spin_lock(&lock->wait_lock); 628 raw_spin_lock(&lock->wait_lock);
704 629
705 /* Try to acquire the lock again: */ 630 /* Try to acquire the lock again: */
706 if (try_to_take_rt_mutex(lock)) { 631 if (try_to_take_rt_mutex(lock, current, NULL)) {
707 raw_spin_unlock(&lock->wait_lock); 632 raw_spin_unlock(&lock->wait_lock);
708 return 0; 633 return 0;
709 } 634 }
@@ -717,12 +642,14 @@ rt_mutex_slowlock(struct rt_mutex *lock, int state,
717 timeout->task = NULL; 642 timeout->task = NULL;
718 } 643 }
719 644
720 ret = __rt_mutex_slowlock(lock, state, timeout, &waiter, 645 ret = task_blocks_on_rt_mutex(lock, &waiter, current, detect_deadlock);
721 detect_deadlock); 646
647 if (likely(!ret))
648 ret = __rt_mutex_slowlock(lock, state, timeout, &waiter);
722 649
723 set_current_state(TASK_RUNNING); 650 set_current_state(TASK_RUNNING);
724 651
725 if (unlikely(waiter.task)) 652 if (unlikely(ret))
726 remove_waiter(lock, &waiter); 653 remove_waiter(lock, &waiter);
727 654
728 /* 655 /*
@@ -737,14 +664,6 @@ rt_mutex_slowlock(struct rt_mutex *lock, int state,
737 if (unlikely(timeout)) 664 if (unlikely(timeout))
738 hrtimer_cancel(&timeout->timer); 665 hrtimer_cancel(&timeout->timer);
739 666
740 /*
741 * Readjust priority, when we did not get the lock. We might
742 * have been the pending owner and boosted. Since we did not
743 * take the lock, the PI boost has to go.
744 */
745 if (unlikely(ret))
746 rt_mutex_adjust_prio(current);
747
748 debug_rt_mutex_free_waiter(&waiter); 667 debug_rt_mutex_free_waiter(&waiter);
749 668
750 return ret; 669 return ret;
@@ -762,7 +681,7 @@ rt_mutex_slowtrylock(struct rt_mutex *lock)
762 681
763 if (likely(rt_mutex_owner(lock) != current)) { 682 if (likely(rt_mutex_owner(lock) != current)) {
764 683
765 ret = try_to_take_rt_mutex(lock); 684 ret = try_to_take_rt_mutex(lock, current, NULL);
766 /* 685 /*
767 * try_to_take_rt_mutex() sets the lock waiters 686 * try_to_take_rt_mutex() sets the lock waiters
768 * bit unconditionally. Clean this up. 687 * bit unconditionally. Clean this up.
@@ -992,7 +911,7 @@ void rt_mutex_init_proxy_locked(struct rt_mutex *lock,
992{ 911{
993 __rt_mutex_init(lock, NULL); 912 __rt_mutex_init(lock, NULL);
994 debug_rt_mutex_proxy_lock(lock, proxy_owner); 913 debug_rt_mutex_proxy_lock(lock, proxy_owner);
995 rt_mutex_set_owner(lock, proxy_owner, 0); 914 rt_mutex_set_owner(lock, proxy_owner);
996 rt_mutex_deadlock_account_lock(lock, proxy_owner); 915 rt_mutex_deadlock_account_lock(lock, proxy_owner);
997} 916}
998 917
@@ -1008,7 +927,7 @@ void rt_mutex_proxy_unlock(struct rt_mutex *lock,
1008 struct task_struct *proxy_owner) 927 struct task_struct *proxy_owner)
1009{ 928{
1010 debug_rt_mutex_proxy_unlock(lock); 929 debug_rt_mutex_proxy_unlock(lock);
1011 rt_mutex_set_owner(lock, NULL, 0); 930 rt_mutex_set_owner(lock, NULL);
1012 rt_mutex_deadlock_account_unlock(proxy_owner); 931 rt_mutex_deadlock_account_unlock(proxy_owner);
1013} 932}
1014 933
@@ -1034,20 +953,14 @@ int rt_mutex_start_proxy_lock(struct rt_mutex *lock,
1034 953
1035 raw_spin_lock(&lock->wait_lock); 954 raw_spin_lock(&lock->wait_lock);
1036 955
1037 mark_rt_mutex_waiters(lock); 956 if (try_to_take_rt_mutex(lock, task, NULL)) {
1038
1039 if (!rt_mutex_owner(lock) || try_to_steal_lock(lock, task)) {
1040 /* We got the lock for task. */
1041 debug_rt_mutex_lock(lock);
1042 rt_mutex_set_owner(lock, task, 0);
1043 raw_spin_unlock(&lock->wait_lock); 957 raw_spin_unlock(&lock->wait_lock);
1044 rt_mutex_deadlock_account_lock(lock, task);
1045 return 1; 958 return 1;
1046 } 959 }
1047 960
1048 ret = task_blocks_on_rt_mutex(lock, waiter, task, detect_deadlock); 961 ret = task_blocks_on_rt_mutex(lock, waiter, task, detect_deadlock);
1049 962
1050 if (ret && !waiter->task) { 963 if (ret && !rt_mutex_owner(lock)) {
1051 /* 964 /*
1052 * Reset the return value. We might have 965 * Reset the return value. We might have
1053 * returned with -EDEADLK and the owner 966 * returned with -EDEADLK and the owner
@@ -1056,6 +969,10 @@ int rt_mutex_start_proxy_lock(struct rt_mutex *lock,
1056 */ 969 */
1057 ret = 0; 970 ret = 0;
1058 } 971 }
972
973 if (unlikely(ret))
974 remove_waiter(lock, waiter);
975
1059 raw_spin_unlock(&lock->wait_lock); 976 raw_spin_unlock(&lock->wait_lock);
1060 977
1061 debug_rt_mutex_print_deadlock(waiter); 978 debug_rt_mutex_print_deadlock(waiter);
@@ -1110,12 +1027,11 @@ int rt_mutex_finish_proxy_lock(struct rt_mutex *lock,
1110 1027
1111 set_current_state(TASK_INTERRUPTIBLE); 1028 set_current_state(TASK_INTERRUPTIBLE);
1112 1029
1113 ret = __rt_mutex_slowlock(lock, TASK_INTERRUPTIBLE, to, waiter, 1030 ret = __rt_mutex_slowlock(lock, TASK_INTERRUPTIBLE, to, waiter);
1114 detect_deadlock);
1115 1031
1116 set_current_state(TASK_RUNNING); 1032 set_current_state(TASK_RUNNING);
1117 1033
1118 if (unlikely(waiter->task)) 1034 if (unlikely(ret))
1119 remove_waiter(lock, waiter); 1035 remove_waiter(lock, waiter);
1120 1036
1121 /* 1037 /*
@@ -1126,13 +1042,5 @@ int rt_mutex_finish_proxy_lock(struct rt_mutex *lock,
1126 1042
1127 raw_spin_unlock(&lock->wait_lock); 1043 raw_spin_unlock(&lock->wait_lock);
1128 1044
1129 /*
1130 * Readjust priority, when we did not get the lock. We might have been
1131 * the pending owner and boosted. Since we did not take the lock, the
1132 * PI boost has to go.
1133 */
1134 if (unlikely(ret))
1135 rt_mutex_adjust_prio(current);
1136
1137 return ret; 1045 return ret;
1138} 1046}
diff --git a/kernel/rtmutex_common.h b/kernel/rtmutex_common.h
index 97a2f81866af..53a66c85261b 100644
--- a/kernel/rtmutex_common.h
+++ b/kernel/rtmutex_common.h
@@ -91,9 +91,8 @@ task_top_pi_waiter(struct task_struct *p)
91/* 91/*
92 * lock->owner state tracking: 92 * lock->owner state tracking:
93 */ 93 */
94#define RT_MUTEX_OWNER_PENDING 1UL 94#define RT_MUTEX_HAS_WAITERS 1UL
95#define RT_MUTEX_HAS_WAITERS 2UL 95#define RT_MUTEX_OWNER_MASKALL 1UL
96#define RT_MUTEX_OWNER_MASKALL 3UL
97 96
98static inline struct task_struct *rt_mutex_owner(struct rt_mutex *lock) 97static inline struct task_struct *rt_mutex_owner(struct rt_mutex *lock)
99{ 98{
@@ -101,17 +100,6 @@ static inline struct task_struct *rt_mutex_owner(struct rt_mutex *lock)
101 ((unsigned long)lock->owner & ~RT_MUTEX_OWNER_MASKALL); 100 ((unsigned long)lock->owner & ~RT_MUTEX_OWNER_MASKALL);
102} 101}
103 102
104static inline struct task_struct *rt_mutex_real_owner(struct rt_mutex *lock)
105{
106 return (struct task_struct *)
107 ((unsigned long)lock->owner & ~RT_MUTEX_HAS_WAITERS);
108}
109
110static inline unsigned long rt_mutex_owner_pending(struct rt_mutex *lock)
111{
112 return (unsigned long)lock->owner & RT_MUTEX_OWNER_PENDING;
113}
114
115/* 103/*
116 * PI-futex support (proxy locking functions, etc.): 104 * PI-futex support (proxy locking functions, etc.):
117 */ 105 */
diff --git a/kernel/timer.c b/kernel/timer.c
index 33a67925d900..3503c17ac1d3 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -970,6 +970,25 @@ EXPORT_SYMBOL(try_to_del_timer_sync);
970 * add_timer_on(). Upon exit the timer is not queued and the handler is 970 * add_timer_on(). Upon exit the timer is not queued and the handler is
971 * not running on any CPU. 971 * not running on any CPU.
972 * 972 *
973 * Note: You must not hold locks that are held in interrupt context
974 * while calling this function. Even if the lock has nothing to do
975 * with the timer in question. Here's why:
976 *
977 * CPU0 CPU1
978 * ---- ----
979 * <SOFTIRQ>
980 * call_timer_fn();
981 * base->running_timer = mytimer;
982 * spin_lock_irq(somelock);
983 * <IRQ>
984 * spin_lock(somelock);
985 * del_timer_sync(mytimer);
986 * while (base->running_timer == mytimer);
987 *
988 * Now del_timer_sync() will never return and never release somelock.
989 * The interrupt on the other CPU is waiting to grab somelock but
990 * it has interrupted the softirq that CPU0 is waiting to finish.
991 *
973 * The function returns whether it has deactivated a pending timer or not. 992 * The function returns whether it has deactivated a pending timer or not.
974 */ 993 */
975int del_timer_sync(struct timer_list *timer) 994int del_timer_sync(struct timer_list *timer)
@@ -977,6 +996,10 @@ int del_timer_sync(struct timer_list *timer)
977#ifdef CONFIG_LOCKDEP 996#ifdef CONFIG_LOCKDEP
978 unsigned long flags; 997 unsigned long flags;
979 998
999 /*
1000 * If lockdep gives a backtrace here, please reference
1001 * the synchronization rules above.
1002 */
980 local_irq_save(flags); 1003 local_irq_save(flags);
981 lock_map_acquire(&timer->lockdep_map); 1004 lock_map_acquire(&timer->lockdep_map);
982 lock_map_release(&timer->lockdep_map); 1005 lock_map_release(&timer->lockdep_map);
diff --git a/lib/rwsem.c b/lib/rwsem.c
index f236d7cd5cf3..aa7c3052261f 100644
--- a/lib/rwsem.c
+++ b/lib/rwsem.c
@@ -222,8 +222,7 @@ rwsem_down_failed_common(struct rw_semaphore *sem,
222/* 222/*
223 * wait for the read lock to be granted 223 * wait for the read lock to be granted
224 */ 224 */
225asmregparm struct rw_semaphore __sched * 225struct rw_semaphore __sched *rwsem_down_read_failed(struct rw_semaphore *sem)
226rwsem_down_read_failed(struct rw_semaphore *sem)
227{ 226{
228 return rwsem_down_failed_common(sem, RWSEM_WAITING_FOR_READ, 227 return rwsem_down_failed_common(sem, RWSEM_WAITING_FOR_READ,
229 -RWSEM_ACTIVE_READ_BIAS); 228 -RWSEM_ACTIVE_READ_BIAS);
@@ -232,8 +231,7 @@ rwsem_down_read_failed(struct rw_semaphore *sem)
232/* 231/*
233 * wait for the write lock to be granted 232 * wait for the write lock to be granted
234 */ 233 */
235asmregparm struct rw_semaphore __sched * 234struct rw_semaphore __sched *rwsem_down_write_failed(struct rw_semaphore *sem)
236rwsem_down_write_failed(struct rw_semaphore *sem)
237{ 235{
238 return rwsem_down_failed_common(sem, RWSEM_WAITING_FOR_WRITE, 236 return rwsem_down_failed_common(sem, RWSEM_WAITING_FOR_WRITE,
239 -RWSEM_ACTIVE_WRITE_BIAS); 237 -RWSEM_ACTIVE_WRITE_BIAS);
@@ -243,7 +241,7 @@ rwsem_down_write_failed(struct rw_semaphore *sem)
243 * handle waking up a waiter on the semaphore 241 * handle waking up a waiter on the semaphore
244 * - up_read/up_write has decremented the active part of count if we come here 242 * - up_read/up_write has decremented the active part of count if we come here
245 */ 243 */
246asmregparm struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem) 244struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem)
247{ 245{
248 unsigned long flags; 246 unsigned long flags;
249 247
@@ -263,7 +261,7 @@ asmregparm struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem)
263 * - caller incremented waiting part of count and discovered it still negative 261 * - caller incremented waiting part of count and discovered it still negative
264 * - just wake up any readers at the front of the queue 262 * - just wake up any readers at the front of the queue
265 */ 263 */
266asmregparm struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem) 264struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem)
267{ 265{
268 unsigned long flags; 266 unsigned long flags;
269 267
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 4c0383da1c9a..58848e3e392c 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2654,11 +2654,6 @@ sub process {
2654 WARN("Use of volatile is usually wrong: see Documentation/volatile-considered-harmful.txt\n" . $herecurr); 2654 WARN("Use of volatile is usually wrong: see Documentation/volatile-considered-harmful.txt\n" . $herecurr);
2655 } 2655 }
2656 2656
2657# SPIN_LOCK_UNLOCKED & RW_LOCK_UNLOCKED are deprecated
2658 if ($line =~ /\b(SPIN_LOCK_UNLOCKED|RW_LOCK_UNLOCKED)/) {
2659 ERROR("Use of $1 is deprecated: see Documentation/spinlocks.txt\n" . $herecurr);
2660 }
2661
2662# warn about #if 0 2657# warn about #if 0
2663 if ($line =~ /^.\s*\#\s*if\s+0\b/) { 2658 if ($line =~ /^.\s*\#\s*if\s+0\b/) {
2664 CHK("if this code is redundant consider removing it\n" . 2659 CHK("if this code is redundant consider removing it\n" .
diff --git a/scripts/rt-tester/rt-tester.py b/scripts/rt-tester/rt-tester.py
index 44423b4dcb82..8c81d76959ee 100644
--- a/scripts/rt-tester/rt-tester.py
+++ b/scripts/rt-tester/rt-tester.py
@@ -33,8 +33,6 @@ cmd_opcodes = {
33 "lockintnowait" : "6", 33 "lockintnowait" : "6",
34 "lockcont" : "7", 34 "lockcont" : "7",
35 "unlock" : "8", 35 "unlock" : "8",
36 "lockbkl" : "9",
37 "unlockbkl" : "10",
38 "signal" : "11", 36 "signal" : "11",
39 "resetevent" : "98", 37 "resetevent" : "98",
40 "reset" : "99", 38 "reset" : "99",
diff --git a/scripts/rt-tester/t2-l1-2rt-sameprio.tst b/scripts/rt-tester/t2-l1-2rt-sameprio.tst
index 8821f27cc8be..3710c8b2090d 100644
--- a/scripts/rt-tester/t2-l1-2rt-sameprio.tst
+++ b/scripts/rt-tester/t2-l1-2rt-sameprio.tst
@@ -19,8 +19,6 @@
19# lockintnowait lock nr (0-7) 19# lockintnowait lock nr (0-7)
20# lockcont lock nr (0-7) 20# lockcont lock nr (0-7)
21# unlock lock nr (0-7) 21# unlock lock nr (0-7)
22# lockbkl lock nr (0-7)
23# unlockbkl lock nr (0-7)
24# signal 0 22# signal 0
25# reset 0 23# reset 0
26# resetevent 0 24# resetevent 0
@@ -39,9 +37,6 @@
39# blocked lock nr (0-7) 37# blocked lock nr (0-7)
40# blockedwake lock nr (0-7) 38# blockedwake lock nr (0-7)
41# unlocked lock nr (0-7) 39# unlocked lock nr (0-7)
42# lockedbkl dont care
43# blockedbkl dont care
44# unlockedbkl dont care
45# opcodeeq command opcode or number 40# opcodeeq command opcode or number
46# opcodelt number 41# opcodelt number
47# opcodegt number 42# opcodegt number
diff --git a/scripts/rt-tester/t2-l1-pi.tst b/scripts/rt-tester/t2-l1-pi.tst
index cde1f189a02b..b4cc95975adb 100644
--- a/scripts/rt-tester/t2-l1-pi.tst
+++ b/scripts/rt-tester/t2-l1-pi.tst
@@ -19,8 +19,6 @@
19# lockintnowait lock nr (0-7) 19# lockintnowait lock nr (0-7)
20# lockcont lock nr (0-7) 20# lockcont lock nr (0-7)
21# unlock lock nr (0-7) 21# unlock lock nr (0-7)
22# lockbkl lock nr (0-7)
23# unlockbkl lock nr (0-7)
24# signal 0 22# signal 0
25# reset 0 23# reset 0
26# resetevent 0 24# resetevent 0
@@ -39,9 +37,6 @@
39# blocked lock nr (0-7) 37# blocked lock nr (0-7)
40# blockedwake lock nr (0-7) 38# blockedwake lock nr (0-7)
41# unlocked lock nr (0-7) 39# unlocked lock nr (0-7)
42# lockedbkl dont care
43# blockedbkl dont care
44# unlockedbkl dont care
45# opcodeeq command opcode or number 40# opcodeeq command opcode or number
46# opcodelt number 41# opcodelt number
47# opcodegt number 42# opcodegt number
diff --git a/scripts/rt-tester/t2-l1-signal.tst b/scripts/rt-tester/t2-l1-signal.tst
index 3ab0bfc49950..1b57376cc1f7 100644
--- a/scripts/rt-tester/t2-l1-signal.tst
+++ b/scripts/rt-tester/t2-l1-signal.tst
@@ -19,8 +19,6 @@
19# lockintnowait lock nr (0-7) 19# lockintnowait lock nr (0-7)
20# lockcont lock nr (0-7) 20# lockcont lock nr (0-7)
21# unlock lock nr (0-7) 21# unlock lock nr (0-7)
22# lockbkl lock nr (0-7)
23# unlockbkl lock nr (0-7)
24# signal 0 22# signal 0
25# reset 0 23# reset 0
26# resetevent 0 24# resetevent 0
@@ -39,9 +37,6 @@
39# blocked lock nr (0-7) 37# blocked lock nr (0-7)
40# blockedwake lock nr (0-7) 38# blockedwake lock nr (0-7)
41# unlocked lock nr (0-7) 39# unlocked lock nr (0-7)
42# lockedbkl dont care
43# blockedbkl dont care
44# unlockedbkl dont care
45# opcodeeq command opcode or number 40# opcodeeq command opcode or number
46# opcodelt number 41# opcodelt number
47# opcodegt number 42# opcodegt number
diff --git a/scripts/rt-tester/t2-l2-2rt-deadlock.tst b/scripts/rt-tester/t2-l2-2rt-deadlock.tst
index f4b5d5d6215f..68b10629b6f4 100644
--- a/scripts/rt-tester/t2-l2-2rt-deadlock.tst
+++ b/scripts/rt-tester/t2-l2-2rt-deadlock.tst
@@ -19,8 +19,6 @@
19# lockintnowait lock nr (0-7) 19# lockintnowait lock nr (0-7)
20# lockcont lock nr (0-7) 20# lockcont lock nr (0-7)
21# unlock lock nr (0-7) 21# unlock lock nr (0-7)
22# lockbkl lock nr (0-7)
23# unlockbkl lock nr (0-7)
24# signal 0 22# signal 0
25# reset 0 23# reset 0
26# resetevent 0 24# resetevent 0
@@ -39,9 +37,6 @@
39# blocked lock nr (0-7) 37# blocked lock nr (0-7)
40# blockedwake lock nr (0-7) 38# blockedwake lock nr (0-7)
41# unlocked lock nr (0-7) 39# unlocked lock nr (0-7)
42# lockedbkl dont care
43# blockedbkl dont care
44# unlockedbkl dont care
45# opcodeeq command opcode or number 40# opcodeeq command opcode or number
46# opcodelt number 41# opcodelt number
47# opcodegt number 42# opcodegt number
diff --git a/scripts/rt-tester/t3-l1-pi-1rt.tst b/scripts/rt-tester/t3-l1-pi-1rt.tst
index 63440ca2cce9..8e6c8b11ae56 100644
--- a/scripts/rt-tester/t3-l1-pi-1rt.tst
+++ b/scripts/rt-tester/t3-l1-pi-1rt.tst
@@ -19,8 +19,6 @@
19# lockintnowait lock nr (0-7) 19# lockintnowait lock nr (0-7)
20# lockcont lock nr (0-7) 20# lockcont lock nr (0-7)
21# unlock lock nr (0-7) 21# unlock lock nr (0-7)
22# lockbkl lock nr (0-7)
23# unlockbkl lock nr (0-7)
24# signal thread to signal (0-7) 22# signal thread to signal (0-7)
25# reset 0 23# reset 0
26# resetevent 0 24# resetevent 0
@@ -39,9 +37,6 @@
39# blocked lock nr (0-7) 37# blocked lock nr (0-7)
40# blockedwake lock nr (0-7) 38# blockedwake lock nr (0-7)
41# unlocked lock nr (0-7) 39# unlocked lock nr (0-7)
42# lockedbkl dont care
43# blockedbkl dont care
44# unlockedbkl dont care
45# opcodeeq command opcode or number 40# opcodeeq command opcode or number
46# opcodelt number 41# opcodelt number
47# opcodegt number 42# opcodegt number
diff --git a/scripts/rt-tester/t3-l1-pi-2rt.tst b/scripts/rt-tester/t3-l1-pi-2rt.tst
index e5816fe67df3..69c2212fc520 100644
--- a/scripts/rt-tester/t3-l1-pi-2rt.tst
+++ b/scripts/rt-tester/t3-l1-pi-2rt.tst
@@ -19,8 +19,6 @@
19# lockintnowait lock nr (0-7) 19# lockintnowait lock nr (0-7)
20# lockcont lock nr (0-7) 20# lockcont lock nr (0-7)
21# unlock lock nr (0-7) 21# unlock lock nr (0-7)
22# lockbkl lock nr (0-7)
23# unlockbkl lock nr (0-7)
24# signal thread to signal (0-7) 22# signal thread to signal (0-7)
25# reset 0 23# reset 0
26# resetevent 0 24# resetevent 0
@@ -39,9 +37,6 @@
39# blocked lock nr (0-7) 37# blocked lock nr (0-7)
40# blockedwake lock nr (0-7) 38# blockedwake lock nr (0-7)
41# unlocked lock nr (0-7) 39# unlocked lock nr (0-7)
42# lockedbkl dont care
43# blockedbkl dont care
44# unlockedbkl dont care
45# opcodeeq command opcode or number 40# opcodeeq command opcode or number
46# opcodelt number 41# opcodelt number
47# opcodegt number 42# opcodegt number
diff --git a/scripts/rt-tester/t3-l1-pi-3rt.tst b/scripts/rt-tester/t3-l1-pi-3rt.tst
index 718b82b5d3bb..9b0f1eb26a88 100644
--- a/scripts/rt-tester/t3-l1-pi-3rt.tst
+++ b/scripts/rt-tester/t3-l1-pi-3rt.tst
@@ -19,8 +19,6 @@
19# lockintnowait lock nr (0-7) 19# lockintnowait lock nr (0-7)
20# lockcont lock nr (0-7) 20# lockcont lock nr (0-7)
21# unlock lock nr (0-7) 21# unlock lock nr (0-7)
22# lockbkl lock nr (0-7)
23# unlockbkl lock nr (0-7)
24# signal thread to signal (0-7) 22# signal thread to signal (0-7)
25# reset 0 23# reset 0
26# resetevent 0 24# resetevent 0
@@ -39,9 +37,6 @@
39# blocked lock nr (0-7) 37# blocked lock nr (0-7)
40# blockedwake lock nr (0-7) 38# blockedwake lock nr (0-7)
41# unlocked lock nr (0-7) 39# unlocked lock nr (0-7)
42# lockedbkl dont care
43# blockedbkl dont care
44# unlockedbkl dont care
45# opcodeeq command opcode or number 40# opcodeeq command opcode or number
46# opcodelt number 41# opcodelt number
47# opcodegt number 42# opcodegt number
diff --git a/scripts/rt-tester/t3-l1-pi-signal.tst b/scripts/rt-tester/t3-l1-pi-signal.tst
index c6e213563498..39ec74ab06ee 100644
--- a/scripts/rt-tester/t3-l1-pi-signal.tst
+++ b/scripts/rt-tester/t3-l1-pi-signal.tst
@@ -19,8 +19,6 @@
19# lockintnowait lock nr (0-7) 19# lockintnowait lock nr (0-7)
20# lockcont lock nr (0-7) 20# lockcont lock nr (0-7)
21# unlock lock nr (0-7) 21# unlock lock nr (0-7)
22# lockbkl lock nr (0-7)
23# unlockbkl lock nr (0-7)
24# signal thread to signal (0-7) 22# signal thread to signal (0-7)
25# reset 0 23# reset 0
26# resetevent 0 24# resetevent 0
@@ -39,9 +37,6 @@
39# blocked lock nr (0-7) 37# blocked lock nr (0-7)
40# blockedwake lock nr (0-7) 38# blockedwake lock nr (0-7)
41# unlocked lock nr (0-7) 39# unlocked lock nr (0-7)
42# lockedbkl dont care
43# blockedbkl dont care
44# unlockedbkl dont care
45# opcodeeq command opcode or number 40# opcodeeq command opcode or number
46# opcodelt number 41# opcodelt number
47# opcodegt number 42# opcodegt number
diff --git a/scripts/rt-tester/t3-l1-pi-steal.tst b/scripts/rt-tester/t3-l1-pi-steal.tst
index f53749d59d79..e03db7e010fa 100644
--- a/scripts/rt-tester/t3-l1-pi-steal.tst
+++ b/scripts/rt-tester/t3-l1-pi-steal.tst
@@ -19,8 +19,6 @@
19# lockintnowait lock nr (0-7) 19# lockintnowait lock nr (0-7)
20# lockcont lock nr (0-7) 20# lockcont lock nr (0-7)
21# unlock lock nr (0-7) 21# unlock lock nr (0-7)
22# lockbkl lock nr (0-7)
23# unlockbkl lock nr (0-7)
24# signal thread to signal (0-7) 22# signal thread to signal (0-7)
25# reset 0 23# reset 0
26# resetevent 0 24# resetevent 0
@@ -39,9 +37,6 @@
39# blocked lock nr (0-7) 37# blocked lock nr (0-7)
40# blockedwake lock nr (0-7) 38# blockedwake lock nr (0-7)
41# unlocked lock nr (0-7) 39# unlocked lock nr (0-7)
42# lockedbkl dont care
43# blockedbkl dont care
44# unlockedbkl dont care
45# opcodeeq command opcode or number 40# opcodeeq command opcode or number
46# opcodelt number 41# opcodelt number
47# opcodegt number 42# opcodegt number
diff --git a/scripts/rt-tester/t3-l2-pi.tst b/scripts/rt-tester/t3-l2-pi.tst
index cdc3e4fd7bac..7b59100d3e48 100644
--- a/scripts/rt-tester/t3-l2-pi.tst
+++ b/scripts/rt-tester/t3-l2-pi.tst
@@ -19,8 +19,6 @@
19# lockintnowait lock nr (0-7) 19# lockintnowait lock nr (0-7)
20# lockcont lock nr (0-7) 20# lockcont lock nr (0-7)
21# unlock lock nr (0-7) 21# unlock lock nr (0-7)
22# lockbkl lock nr (0-7)
23# unlockbkl lock nr (0-7)
24# signal thread to signal (0-7) 22# signal thread to signal (0-7)
25# reset 0 23# reset 0
26# resetevent 0 24# resetevent 0
@@ -39,9 +37,6 @@
39# blocked lock nr (0-7) 37# blocked lock nr (0-7)
40# blockedwake lock nr (0-7) 38# blockedwake lock nr (0-7)
41# unlocked lock nr (0-7) 39# unlocked lock nr (0-7)
42# lockedbkl dont care
43# blockedbkl dont care
44# unlockedbkl dont care
45# opcodeeq command opcode or number 40# opcodeeq command opcode or number
46# opcodelt number 41# opcodelt number
47# opcodegt number 42# opcodegt number
diff --git a/scripts/rt-tester/t4-l2-pi-deboost.tst b/scripts/rt-tester/t4-l2-pi-deboost.tst
index baa14137f473..2f0e049d6443 100644
--- a/scripts/rt-tester/t4-l2-pi-deboost.tst
+++ b/scripts/rt-tester/t4-l2-pi-deboost.tst
@@ -19,8 +19,6 @@
19# lockintnowait lock nr (0-7) 19# lockintnowait lock nr (0-7)
20# lockcont lock nr (0-7) 20# lockcont lock nr (0-7)
21# unlock lock nr (0-7) 21# unlock lock nr (0-7)
22# lockbkl lock nr (0-7)
23# unlockbkl lock nr (0-7)
24# signal thread to signal (0-7) 22# signal thread to signal (0-7)
25# reset 0 23# reset 0
26# resetevent 0 24# resetevent 0
@@ -39,9 +37,6 @@
39# blocked lock nr (0-7) 37# blocked lock nr (0-7)
40# blockedwake lock nr (0-7) 38# blockedwake lock nr (0-7)
41# unlocked lock nr (0-7) 39# unlocked lock nr (0-7)
42# lockedbkl dont care
43# blockedbkl dont care
44# unlockedbkl dont care
45# opcodeeq command opcode or number 40# opcodeeq command opcode or number
46# opcodelt number 41# opcodelt number
47# opcodegt number 42# opcodegt number
diff --git a/scripts/rt-tester/t5-l4-pi-boost-deboost-setsched.tst b/scripts/rt-tester/t5-l4-pi-boost-deboost-setsched.tst
index e6ec0c81b54d..04f4034ff895 100644
--- a/scripts/rt-tester/t5-l4-pi-boost-deboost-setsched.tst
+++ b/scripts/rt-tester/t5-l4-pi-boost-deboost-setsched.tst
@@ -19,8 +19,6 @@
19# lockintnowait lock nr (0-7) 19# lockintnowait lock nr (0-7)
20# lockcont lock nr (0-7) 20# lockcont lock nr (0-7)
21# unlock lock nr (0-7) 21# unlock lock nr (0-7)
22# lockbkl lock nr (0-7)
23# unlockbkl lock nr (0-7)
24# signal thread to signal (0-7) 22# signal thread to signal (0-7)
25# reset 0 23# reset 0
26# resetevent 0 24# resetevent 0
@@ -39,9 +37,6 @@
39# blocked lock nr (0-7) 37# blocked lock nr (0-7)
40# blockedwake lock nr (0-7) 38# blockedwake lock nr (0-7)
41# unlocked lock nr (0-7) 39# unlocked lock nr (0-7)
42# lockedbkl dont care
43# blockedbkl dont care
44# unlockedbkl dont care
45# opcodeeq command opcode or number 40# opcodeeq command opcode or number
46# opcodelt number 41# opcodelt number
47# opcodegt number 42# opcodegt number
diff --git a/scripts/rt-tester/t5-l4-pi-boost-deboost.tst b/scripts/rt-tester/t5-l4-pi-boost-deboost.tst
index ca64f8bbf4bc..a48a6ee29ddc 100644
--- a/scripts/rt-tester/t5-l4-pi-boost-deboost.tst
+++ b/scripts/rt-tester/t5-l4-pi-boost-deboost.tst
@@ -19,8 +19,6 @@
19# lockintnowait lock nr (0-7) 19# lockintnowait lock nr (0-7)
20# lockcont lock nr (0-7) 20# lockcont lock nr (0-7)
21# unlock lock nr (0-7) 21# unlock lock nr (0-7)
22# lockbkl lock nr (0-7)
23# unlockbkl lock nr (0-7)
24# signal thread to signal (0-7) 22# signal thread to signal (0-7)
25# reset 0 23# reset 0
26# resetevent 0 24# resetevent 0
@@ -39,9 +37,6 @@
39# blocked lock nr (0-7) 37# blocked lock nr (0-7)
40# blockedwake lock nr (0-7) 38# blockedwake lock nr (0-7)
41# unlocked lock nr (0-7) 39# unlocked lock nr (0-7)
42# lockedbkl dont care
43# blockedbkl dont care
44# unlockedbkl dont care
45# opcodeeq command opcode or number 40# opcodeeq command opcode or number
46# opcodelt number 41# opcodelt number
47# opcodegt number 42# opcodegt number
generated by cgit v1.2.2 (git 2.25.0) at 2026-04-07 11:27:17 -0400