diff options
Diffstat (limited to 'debian/patches-rt/0147-rtmutex-wire-up-RT-s-locking.patch')
| -rw-r--r-- | debian/patches-rt/0147-rtmutex-wire-up-RT-s-locking.patch | 271 |
1 files changed, 271 insertions, 0 deletions
diff --git a/debian/patches-rt/0147-rtmutex-wire-up-RT-s-locking.patch b/debian/patches-rt/0147-rtmutex-wire-up-RT-s-locking.patch new file mode 100644 index 000000000..8110605a3 --- /dev/null +++ b/debian/patches-rt/0147-rtmutex-wire-up-RT-s-locking.patch @@ -0,0 +1,271 @@ +From d334127aee6c64a7cdf5e5d3420666bcfdeb8ba6 Mon Sep 17 00:00:00 2001 +From: Thomas Gleixner <tglx@linutronix.de> +Date: Thu, 12 Oct 2017 17:31:14 +0200 +Subject: [PATCH 147/347] rtmutex: wire up RT's locking +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.246-rt110.tar.xz + +Signed-off-by: Thomas Gleixner <tglx@linutronix.de> +Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +--- + include/linux/mutex.h | 20 +++++++++++++------- + include/linux/rwsem.h | 11 +++++++++++ + include/linux/spinlock.h | 12 +++++++++++- + include/linux/spinlock_api_smp.h | 4 +++- + include/linux/spinlock_types.h | 11 ++++++++--- + kernel/locking/Makefile | 9 ++++++++- + kernel/locking/spinlock.c | 7 +++++++ + kernel/locking/spinlock_debug.c | 5 +++++ + 8 files changed, 66 insertions(+), 13 deletions(-) + +diff --git a/include/linux/mutex.h b/include/linux/mutex.h +index 8f7cdf83f359..6aa217c6e3ca 100644 +--- a/include/linux/mutex.h ++++ b/include/linux/mutex.h +@@ -22,6 +22,17 @@ + + struct ww_acquire_ctx; + ++#ifdef CONFIG_DEBUG_LOCK_ALLOC ++# define __DEP_MAP_MUTEX_INITIALIZER(lockname) \ ++ , .dep_map = { .name = #lockname } ++#else ++# define __DEP_MAP_MUTEX_INITIALIZER(lockname) ++#endif ++ ++#ifdef CONFIG_PREEMPT_RT_FULL ++# include <linux/mutex_rt.h> ++#else ++ + /* + * Simple, straightforward mutexes with strict semantics: + * +@@ -118,13 +129,6 @@ do { \ + __mutex_init((mutex), #mutex, &__key); \ + } while (0) + +-#ifdef CONFIG_DEBUG_LOCK_ALLOC +-# define __DEP_MAP_MUTEX_INITIALIZER(lockname) \ +- , .dep_map = { .name = #lockname } +-#else +-# define __DEP_MAP_MUTEX_INITIALIZER(lockname) +-#endif +- + #define __MUTEX_INITIALIZER(lockname) \ + { .owner = ATOMIC_LONG_INIT(0) \ + , .wait_lock = __SPIN_LOCK_UNLOCKED(lockname.wait_lock) \ +@@ -229,4 +233,6 @@ mutex_trylock_recursive(struct mutex *lock) + return mutex_trylock(lock); + } + ++#endif /* !PREEMPT_RT_FULL */ ++ + #endif /* __LINUX_MUTEX_H */ +diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h +index ab93b6eae696..b1e32373f44f 100644 +--- a/include/linux/rwsem.h ++++ b/include/linux/rwsem.h +@@ -20,6 +20,10 @@ + #include <linux/osq_lock.h> + #endif + ++#ifdef CONFIG_PREEMPT_RT_FULL ++#include <linux/rwsem_rt.h> ++#else /* PREEMPT_RT_FULL */ ++ + struct rw_semaphore; + + #ifdef CONFIG_RWSEM_GENERIC_SPINLOCK +@@ -114,6 +118,13 @@ static inline int rwsem_is_contended(struct rw_semaphore *sem) + return !list_empty(&sem->wait_list); + } + ++#endif /* !PREEMPT_RT_FULL */ ++ ++/* ++ * The functions below are the same for all rwsem implementations including ++ * the RT specific variant. ++ */ ++ + /* + * lock for reading + */ +diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h +index e089157dcf97..5f5ad0630a26 100644 +--- a/include/linux/spinlock.h ++++ b/include/linux/spinlock.h +@@ -298,7 +298,11 @@ static inline void do_raw_spin_unlock(raw_spinlock_t *lock) __releases(lock) + }) + + /* Include rwlock functions */ +-#include <linux/rwlock.h> ++#ifdef CONFIG_PREEMPT_RT_FULL ++# include <linux/rwlock_rt.h> ++#else ++# include <linux/rwlock.h> ++#endif + + /* + * Pull the _spin_*()/_read_*()/_write_*() functions/declarations: +@@ -309,6 +313,10 @@ static inline void do_raw_spin_unlock(raw_spinlock_t *lock) __releases(lock) + # include <linux/spinlock_api_up.h> + #endif + ++#ifdef CONFIG_PREEMPT_RT_FULL ++# include <linux/spinlock_rt.h> ++#else /* PREEMPT_RT_FULL */ ++ + /* + * Map the spin_lock functions to the raw variants for PREEMPT_RT=n + */ +@@ -429,6 +437,8 @@ static __always_inline int spin_is_contended(spinlock_t *lock) + + #define assert_spin_locked(lock) assert_raw_spin_locked(&(lock)->rlock) + ++#endif /* !PREEMPT_RT_FULL */ ++ + /* + * Pull the atomic_t declaration: + * (asm-mips/atomic.h needs above definitions) +diff --git a/include/linux/spinlock_api_smp.h b/include/linux/spinlock_api_smp.h +index 42dfab89e740..29d99ae5a8ab 100644 +--- a/include/linux/spinlock_api_smp.h ++++ b/include/linux/spinlock_api_smp.h +@@ -187,6 +187,8 @@ static inline int __raw_spin_trylock_bh(raw_spinlock_t *lock) + return 0; + } + +-#include <linux/rwlock_api_smp.h> ++#ifndef CONFIG_PREEMPT_RT_FULL ++# include <linux/rwlock_api_smp.h> ++#endif + + #endif /* __LINUX_SPINLOCK_API_SMP_H */ +diff --git a/include/linux/spinlock_types.h b/include/linux/spinlock_types.h +index 5c8664d57fb8..10bac715ea96 100644 +--- a/include/linux/spinlock_types.h ++++ b/include/linux/spinlock_types.h +@@ -11,8 +11,13 @@ + + #include <linux/spinlock_types_raw.h> + +-#include <linux/spinlock_types_nort.h> +- +-#include <linux/rwlock_types.h> ++#ifndef CONFIG_PREEMPT_RT_FULL ++# include <linux/spinlock_types_nort.h> ++# include <linux/rwlock_types.h> ++#else ++# include <linux/rtmutex.h> ++# include <linux/spinlock_types_rt.h> ++# include <linux/rwlock_types_rt.h> ++#endif + + #endif /* __LINUX_SPINLOCK_TYPES_H */ +diff --git a/kernel/locking/Makefile b/kernel/locking/Makefile +index 392c7f23af76..c0bf04b6b965 100644 +--- a/kernel/locking/Makefile ++++ b/kernel/locking/Makefile +@@ -3,7 +3,7 @@ + # and is generally not a function of system call inputs. + KCOV_INSTRUMENT := n + +-obj-y += mutex.o semaphore.o rwsem.o percpu-rwsem.o ++obj-y += semaphore.o percpu-rwsem.o + + ifdef CONFIG_FUNCTION_TRACER + CFLAGS_REMOVE_lockdep.o = $(CC_FLAGS_FTRACE) +@@ -12,7 +12,11 @@ CFLAGS_REMOVE_mutex-debug.o = $(CC_FLAGS_FTRACE) + CFLAGS_REMOVE_rtmutex-debug.o = $(CC_FLAGS_FTRACE) + endif + ++ifneq ($(CONFIG_PREEMPT_RT_FULL),y) ++obj-y += mutex.o + obj-$(CONFIG_DEBUG_MUTEXES) += mutex-debug.o ++endif ++obj-y += rwsem.o + obj-$(CONFIG_LOCKDEP) += lockdep.o + ifeq ($(CONFIG_PROC_FS),y) + obj-$(CONFIG_LOCKDEP) += lockdep_proc.o +@@ -25,8 +29,11 @@ obj-$(CONFIG_RT_MUTEXES) += rtmutex.o + obj-$(CONFIG_DEBUG_RT_MUTEXES) += rtmutex-debug.o + obj-$(CONFIG_DEBUG_SPINLOCK) += spinlock.o + obj-$(CONFIG_DEBUG_SPINLOCK) += spinlock_debug.o ++ifneq ($(CONFIG_PREEMPT_RT_FULL),y) + obj-$(CONFIG_RWSEM_GENERIC_SPINLOCK) += rwsem-spinlock.o + obj-$(CONFIG_RWSEM_XCHGADD_ALGORITHM) += rwsem-xadd.o ++endif ++obj-$(CONFIG_PREEMPT_RT_FULL) += mutex-rt.o rwsem-rt.o rwlock-rt.o + obj-$(CONFIG_QUEUED_RWLOCKS) += qrwlock.o + obj-$(CONFIG_LOCK_TORTURE_TEST) += locktorture.o + obj-$(CONFIG_WW_MUTEX_SELFTEST) += test-ww_mutex.o +diff --git a/kernel/locking/spinlock.c b/kernel/locking/spinlock.c +index 936f3d14dd6b..e89b70f474af 100644 +--- a/kernel/locking/spinlock.c ++++ b/kernel/locking/spinlock.c +@@ -117,8 +117,11 @@ void __lockfunc __raw_##op##_lock_bh(locktype##_t *lock) \ + * __[spin|read|write]_lock_bh() + */ + BUILD_LOCK_OPS(spin, raw_spinlock); ++ ++#ifndef CONFIG_PREEMPT_RT_FULL + BUILD_LOCK_OPS(read, rwlock); + BUILD_LOCK_OPS(write, rwlock); ++#endif + + #endif + +@@ -202,6 +205,8 @@ void __lockfunc _raw_spin_unlock_bh(raw_spinlock_t *lock) + EXPORT_SYMBOL(_raw_spin_unlock_bh); + #endif + ++#ifndef CONFIG_PREEMPT_RT_FULL ++ + #ifndef CONFIG_INLINE_READ_TRYLOCK + int __lockfunc _raw_read_trylock(rwlock_t *lock) + { +@@ -346,6 +351,8 @@ void __lockfunc _raw_write_unlock_bh(rwlock_t *lock) + EXPORT_SYMBOL(_raw_write_unlock_bh); + #endif + ++#endif /* !PREEMPT_RT_FULL */ ++ + #ifdef CONFIG_DEBUG_LOCK_ALLOC + + void __lockfunc _raw_spin_lock_nested(raw_spinlock_t *lock, int subclass) +diff --git a/kernel/locking/spinlock_debug.c b/kernel/locking/spinlock_debug.c +index 03595c29c566..d63df281b495 100644 +--- a/kernel/locking/spinlock_debug.c ++++ b/kernel/locking/spinlock_debug.c +@@ -31,6 +31,7 @@ void __raw_spin_lock_init(raw_spinlock_t *lock, const char *name, + + EXPORT_SYMBOL(__raw_spin_lock_init); + ++#ifndef CONFIG_PREEMPT_RT_FULL + void __rwlock_init(rwlock_t *lock, const char *name, + struct lock_class_key *key) + { +@@ -48,6 +49,7 @@ void __rwlock_init(rwlock_t *lock, const char *name, + } + + EXPORT_SYMBOL(__rwlock_init); ++#endif + + static void spin_dump(raw_spinlock_t *lock, const char *msg) + { +@@ -135,6 +137,7 @@ void do_raw_spin_unlock(raw_spinlock_t *lock) + arch_spin_unlock(&lock->raw_lock); + } + ++#ifndef CONFIG_PREEMPT_RT_FULL + static void rwlock_bug(rwlock_t *lock, const char *msg) + { + if (!debug_locks_off()) +@@ -224,3 +227,5 @@ void do_raw_write_unlock(rwlock_t *lock) + debug_write_unlock(lock); + arch_write_unlock(&lock->raw_lock); + } ++ ++#endif +-- +2.36.1 + |