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-rw-r--r--Makefile6
-rw-r--r--arch/arm64/kernel/vdso32/Makefile2
-rw-r--r--drivers/dma/ioat/dma.c12
-rw-r--r--include/linux/cleanup.h171
-rw-r--r--include/linux/compiler-clang.h9
-rw-r--r--include/linux/compiler_attributes.h6
-rw-r--r--include/linux/device.h7
-rw-r--r--include/linux/file.h6
-rw-r--r--include/linux/irqflags.h7
-rw-r--r--include/linux/mutex.h4
-rw-r--r--include/linux/percpu.h4
-rw-r--r--include/linux/preempt.h5
-rw-r--r--include/linux/rcupdate.h3
-rw-r--r--include/linux/rwsem.h8
-rw-r--r--include/linux/sched/task.h2
-rw-r--r--include/linux/slab.h3
-rw-r--r--include/linux/spinlock.h31
-rw-r--r--include/linux/srcu.h5
-rwxr-xr-xscripts/checkpatch.pl2
-rw-r--r--security/apparmor/include/lib.h6
20 files changed, 282 insertions, 17 deletions
diff --git a/Makefile b/Makefile
index 7a5a175f708f..12579666581f 100644
--- a/Makefile
+++ b/Makefile
@@ -449,8 +449,7 @@ HOSTRUSTC = rustc
HOSTPKG_CONFIG = pkg-config
KBUILD_USERHOSTCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes \
- -O2 -fomit-frame-pointer -std=gnu11 \
- -Wdeclaration-after-statement
+ -O2 -fomit-frame-pointer -std=gnu11
KBUILD_USERCFLAGS := $(KBUILD_USERHOSTCFLAGS) $(USERCFLAGS)
KBUILD_USERLDFLAGS := $(USERLDFLAGS)
@@ -1014,9 +1013,6 @@ endif
# arch Makefile may override CC so keep this after arch Makefile is included
NOSTDINC_FLAGS += -nostdinc
-# warn about C99 declaration after statement
-KBUILD_CFLAGS += -Wdeclaration-after-statement
-
# Variable Length Arrays (VLAs) should not be used anywhere in the kernel
KBUILD_CFLAGS += -Wvla
diff --git a/arch/arm64/kernel/vdso32/Makefile b/arch/arm64/kernel/vdso32/Makefile
index d014162c5c71..2f73e5bca213 100644
--- a/arch/arm64/kernel/vdso32/Makefile
+++ b/arch/arm64/kernel/vdso32/Makefile
@@ -65,11 +65,9 @@ VDSO_CFLAGS += -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
-fno-strict-aliasing -fno-common \
-Werror-implicit-function-declaration \
-Wno-format-security \
- -Wdeclaration-after-statement \
-std=gnu11
VDSO_CFLAGS += -O2
# Some useful compiler-dependent flags from top-level Makefile
-VDSO_CFLAGS += $(call cc32-option,-Wdeclaration-after-statement,)
VDSO_CFLAGS += $(call cc32-option,-Wno-pointer-sign)
VDSO_CFLAGS += -fno-strict-overflow
VDSO_CFLAGS += $(call cc32-option,-Werror=strict-prototypes)
diff --git a/drivers/dma/ioat/dma.c b/drivers/dma/ioat/dma.c
index 79d244011093..79d8957f9e60 100644
--- a/drivers/dma/ioat/dma.c
+++ b/drivers/dma/ioat/dma.c
@@ -584,11 +584,11 @@ desc_get_errstat(struct ioatdma_chan *ioat_chan, struct ioat_ring_ent *desc)
}
/**
- * __cleanup - reclaim used descriptors
+ * __ioat_cleanup - reclaim used descriptors
* @ioat_chan: channel (ring) to clean
* @phys_complete: zeroed (or not) completion address (from status)
*/
-static void __cleanup(struct ioatdma_chan *ioat_chan, dma_addr_t phys_complete)
+static void __ioat_cleanup(struct ioatdma_chan *ioat_chan, dma_addr_t phys_complete)
{
struct ioatdma_device *ioat_dma = ioat_chan->ioat_dma;
struct ioat_ring_ent *desc;
@@ -675,7 +675,7 @@ static void ioat_cleanup(struct ioatdma_chan *ioat_chan)
spin_lock_bh(&ioat_chan->cleanup_lock);
if (ioat_cleanup_preamble(ioat_chan, &phys_complete))
- __cleanup(ioat_chan, phys_complete);
+ __ioat_cleanup(ioat_chan, phys_complete);
if (is_ioat_halted(*ioat_chan->completion)) {
u32 chanerr = readl(ioat_chan->reg_base + IOAT_CHANERR_OFFSET);
@@ -712,7 +712,7 @@ static void ioat_restart_channel(struct ioatdma_chan *ioat_chan)
ioat_quiesce(ioat_chan, 0);
if (ioat_cleanup_preamble(ioat_chan, &phys_complete))
- __cleanup(ioat_chan, phys_complete);
+ __ioat_cleanup(ioat_chan, phys_complete);
__ioat_restart_chan(ioat_chan);
}
@@ -786,7 +786,7 @@ static void ioat_eh(struct ioatdma_chan *ioat_chan)
/* cleanup so tail points to descriptor that caused the error */
if (ioat_cleanup_preamble(ioat_chan, &phys_complete))
- __cleanup(ioat_chan, phys_complete);
+ __ioat_cleanup(ioat_chan, phys_complete);
chanerr = readl(ioat_chan->reg_base + IOAT_CHANERR_OFFSET);
pci_read_config_dword(pdev, IOAT_PCI_CHANERR_INT_OFFSET, &chanerr_int);
@@ -943,7 +943,7 @@ void ioat_timer_event(struct timer_list *t)
/* timer restarted in ioat_cleanup_preamble
* and IOAT_COMPLETION_ACK cleared
*/
- __cleanup(ioat_chan, phys_complete);
+ __ioat_cleanup(ioat_chan, phys_complete);
goto unlock_out;
}
diff --git a/include/linux/cleanup.h b/include/linux/cleanup.h
new file mode 100644
index 000000000000..53f1a7a932b0
--- /dev/null
+++ b/include/linux/cleanup.h
@@ -0,0 +1,171 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __LINUX_GUARDS_H
+#define __LINUX_GUARDS_H
+
+#include <linux/compiler.h>
+
+/*
+ * DEFINE_FREE(name, type, free):
+ * simple helper macro that defines the required wrapper for a __free()
+ * based cleanup function. @free is an expression using '_T' to access
+ * the variable.
+ *
+ * __free(name):
+ * variable attribute to add a scoped based cleanup to the variable.
+ *
+ * no_free_ptr(var):
+ * like a non-atomic xchg(var, NULL), such that the cleanup function will
+ * be inhibited -- provided it sanely deals with a NULL value.
+ *
+ * return_ptr(p):
+ * returns p while inhibiting the __free().
+ *
+ * Ex.
+ *
+ * DEFINE_FREE(kfree, void *, if (_T) kfree(_T))
+ *
+ * struct obj *p __free(kfree) = kmalloc(...);
+ * if (!p)
+ * return NULL;
+ *
+ * if (!init_obj(p))
+ * return NULL;
+ *
+ * return_ptr(p);
+ */
+
+#define DEFINE_FREE(_name, _type, _free) \
+ static inline void __free_##_name(void *p) { _type _T = *(_type *)p; _free; }
+
+#define __free(_name) __cleanup(__free_##_name)
+
+#define no_free_ptr(p) \
+ ({ __auto_type __ptr = (p); (p) = NULL; __ptr; })
+
+#define return_ptr(p) return no_free_ptr(p)
+
+
+/*
+ * DEFINE_CLASS(name, type, exit, init, init_args...):
+ * helper to define the destructor and constructor for a type.
+ * @exit is an expression using '_T' -- similar to FREE above.
+ * @init is an expression in @init_args resulting in @type
+ *
+ * EXTEND_CLASS(name, ext, init, init_args...):
+ * extends class @name to @name@ext with the new constructor
+ *
+ * CLASS(name, var)(args...):
+ * declare the variable @var as an instance of the named class
+ *
+ * Ex.
+ *
+ * DEFINE_CLASS(fdget, struct fd, fdput(_T), fdget(fd), int fd)
+ *
+ * CLASS(fdget, f)(fd);
+ * if (!f.file)
+ * return -EBADF;
+ *
+ * // use 'f' without concern
+ */
+
+#define DEFINE_CLASS(_name, _type, _exit, _init, _init_args...) \
+typedef _type class_##_name##_t; \
+static inline void class_##_name##_destructor(_type *p) \
+{ _type _T = *p; _exit; } \
+static inline _type class_##_name##_constructor(_init_args) \
+{ _type t = _init; return t; }
+
+#define EXTEND_CLASS(_name, ext, _init, _init_args...) \
+typedef class_##_name##_t class_##_name##ext##_t; \
+static inline void class_##_name##ext##_destructor(class_##_name##_t *p)\
+{ class_##_name##_destructor(p); } \
+static inline class_##_name##_t class_##_name##ext##_constructor(_init_args) \
+{ class_##_name##_t t = _init; return t; }
+
+#define CLASS(_name, var) \
+ class_##_name##_t var __cleanup(class_##_name##_destructor) = \
+ class_##_name##_constructor
+
+
+/*
+ * DEFINE_GUARD(name, type, lock, unlock):
+ * trivial wrapper around DEFINE_CLASS() above specifically
+ * for locks.
+ *
+ * guard(name):
+ * an anonymous instance of the (guard) class
+ *
+ * scoped_guard (name, args...) { }:
+ * similar to CLASS(name, scope)(args), except the variable (with the
+ * explicit name 'scope') is declard in a for-loop such that its scope is
+ * bound to the next (compound) statement.
+ *
+ */
+
+#define DEFINE_GUARD(_name, _type, _lock, _unlock) \
+ DEFINE_CLASS(_name, _type, _unlock, ({ _lock; _T; }), _type _T)
+
+#define guard(_name) \
+ CLASS(_name, __UNIQUE_ID(guard))
+
+#define scoped_guard(_name, args...) \
+ for (CLASS(_name, scope)(args), \
+ *done = NULL; !done; done = (void *)1)
+
+/*
+ * Additional helper macros for generating lock guards with types, either for
+ * locks that don't have a native type (eg. RCU, preempt) or those that need a
+ * 'fat' pointer (eg. spin_lock_irqsave).
+ *
+ * DEFINE_LOCK_GUARD_0(name, lock, unlock, ...)
+ * DEFINE_LOCK_GUARD_1(name, type, lock, unlock, ...)
+ *
+ * will result in the following type:
+ *
+ * typedef struct {
+ * type *lock; // 'type := void' for the _0 variant
+ * __VA_ARGS__;
+ * } class_##name##_t;
+ *
+ * As above, both _lock and _unlock are statements, except this time '_T' will
+ * be a pointer to the above struct.
+ */
+
+#define __DEFINE_UNLOCK_GUARD(_name, _type, _unlock, ...) \
+typedef struct { \
+ _type *lock; \
+ __VA_ARGS__; \
+} class_##_name##_t; \
+ \
+static inline void class_##_name##_destructor(class_##_name##_t *_T) \
+{ \
+ if (_T->lock) { _unlock; } \
+}
+
+
+#define __DEFINE_LOCK_GUARD_1(_name, _type, _lock) \
+static inline class_##_name##_t class_##_name##_constructor(_type *l) \
+{ \
+ class_##_name##_t _t = { .lock = l }, *_T = &_t; \
+ _lock; \
+ return _t; \
+}
+
+#define __DEFINE_LOCK_GUARD_0(_name, _lock) \
+static inline class_##_name##_t class_##_name##_constructor(void) \
+{ \
+ class_##_name##_t _t = { .lock = (void*)1 }, \
+ *_T __maybe_unused = &_t; \
+ _lock; \
+ return _t; \
+}
+
+#define DEFINE_LOCK_GUARD_1(_name, _type, _lock, _unlock, ...) \
+__DEFINE_UNLOCK_GUARD(_name, _type, _unlock, __VA_ARGS__) \
+__DEFINE_LOCK_GUARD_1(_name, _type, _lock)
+
+#define DEFINE_LOCK_GUARD_0(_name, _lock, _unlock, ...) \
+__DEFINE_UNLOCK_GUARD(_name, void, _unlock, __VA_ARGS__) \
+__DEFINE_LOCK_GUARD_0(_name, _lock)
+
+#endif /* __LINUX_GUARDS_H */
diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h
index 6cfd6902bd5b..9b673fefcef8 100644
--- a/include/linux/compiler-clang.h
+++ b/include/linux/compiler-clang.h
@@ -5,6 +5,15 @@
/* Compiler specific definitions for Clang compiler */
+/*
+ * Clang prior to 17 is being silly and considers many __cleanup() variables
+ * as unused (because they are, their sole purpose is to go out of scope).
+ *
+ * https://reviews.llvm.org/D152180
+ */
+#undef __cleanup
+#define __cleanup(func) __maybe_unused __attribute__((__cleanup__(func)))
+
/* same as gcc, this was present in clang-2.6 so we can assume it works
* with any version that can compile the kernel
*/
diff --git a/include/linux/compiler_attributes.h b/include/linux/compiler_attributes.h
index 571fa7924f74..00efa35c350f 100644
--- a/include/linux/compiler_attributes.h
+++ b/include/linux/compiler_attributes.h
@@ -70,6 +70,12 @@
#define __assume_aligned(a, ...) __attribute__((__assume_aligned__(a, ## __VA_ARGS__)))
/*
+ * gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html#index-cleanup-variable-attribute
+ * clang: https://clang.llvm.org/docs/AttributeReference.html#cleanup
+ */
+#define __cleanup(func) __attribute__((__cleanup__(func)))
+
+/*
* Note the long name.
*
* gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-const-function-attribute
diff --git a/include/linux/device.h b/include/linux/device.h
index 66c13965153d..bbaeabd04b0d 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -30,6 +30,7 @@
#include <linux/device/bus.h>
#include <linux/device/class.h>
#include <linux/device/driver.h>
+#include <linux/cleanup.h>
#include <asm/device.h>
struct device;
@@ -1019,6 +1020,9 @@ void device_unregister(struct device *dev);
void device_initialize(struct device *dev);
int __must_check device_add(struct device *dev);
void device_del(struct device *dev);
+
+DEFINE_FREE(device_del, struct device *, if (_T) device_del(_T))
+
int device_for_each_child(struct device *dev, void *data,
int (*fn)(struct device *dev, void *data));
int device_for_each_child_reverse(struct device *dev, void *data,
@@ -1186,6 +1190,9 @@ extern int (*platform_notify_remove)(struct device *dev);
*/
struct device *get_device(struct device *dev);
void put_device(struct device *dev);
+
+DEFINE_FREE(put_device, struct device *, if (_T) put_device(_T))
+
bool kill_device(struct device *dev);
#ifdef CONFIG_DEVTMPFS
diff --git a/include/linux/file.h b/include/linux/file.h
index 39704eae83e2..6e9099d29343 100644
--- a/include/linux/file.h
+++ b/include/linux/file.h
@@ -10,6 +10,7 @@
#include <linux/types.h>
#include <linux/posix_types.h>
#include <linux/errno.h>
+#include <linux/cleanup.h>
struct file;
@@ -80,6 +81,8 @@ static inline void fdput_pos(struct fd f)
fdput(f);
}
+DEFINE_CLASS(fd, struct fd, fdput(_T), fdget(fd), int fd)
+
extern int f_dupfd(unsigned int from, struct file *file, unsigned flags);
extern int replace_fd(unsigned fd, struct file *file, unsigned flags);
extern void set_close_on_exec(unsigned int fd, int flag);
@@ -88,6 +91,9 @@ extern int __get_unused_fd_flags(unsigned flags, unsigned long nofile);
extern int get_unused_fd_flags(unsigned flags);
extern void put_unused_fd(unsigned int fd);
+DEFINE_CLASS(get_unused_fd, int, if (_T >= 0) put_unused_fd(_T),
+ get_unused_fd_flags(flags), unsigned flags)
+
extern void fd_install(unsigned int fd, struct file *file);
extern int __receive_fd(struct file *file, int __user *ufd,
diff --git a/include/linux/irqflags.h b/include/linux/irqflags.h
index 5ec0fa71399e..2b665c32f5fe 100644
--- a/include/linux/irqflags.h
+++ b/include/linux/irqflags.h
@@ -13,6 +13,7 @@
#define _LINUX_TRACE_IRQFLAGS_H
#include <linux/typecheck.h>
+#include <linux/cleanup.h>
#include <asm/irqflags.h>
#include <asm/percpu.h>
@@ -267,4 +268,10 @@ extern void warn_bogus_irq_restore(void);
#define irqs_disabled_flags(flags) raw_irqs_disabled_flags(flags)
+DEFINE_LOCK_GUARD_0(irq, local_irq_disable(), local_irq_enable())
+DEFINE_LOCK_GUARD_0(irqsave,
+ local_irq_save(_T->flags),
+ local_irq_restore(_T->flags),
+ unsigned long flags)
+
#endif
diff --git a/include/linux/mutex.h b/include/linux/mutex.h
index 8f226d460f51..a33aa9eb9fc3 100644
--- a/include/linux/mutex.h
+++ b/include/linux/mutex.h
@@ -19,6 +19,7 @@
#include <asm/processor.h>
#include <linux/osq_lock.h>
#include <linux/debug_locks.h>
+#include <linux/cleanup.h>
#ifdef CONFIG_DEBUG_LOCK_ALLOC
# define __DEP_MAP_MUTEX_INITIALIZER(lockname) \
@@ -219,4 +220,7 @@ extern void mutex_unlock(struct mutex *lock);
extern int atomic_dec_and_mutex_lock(atomic_t *cnt, struct mutex *lock);
+DEFINE_GUARD(mutex, struct mutex *, mutex_lock(_T), mutex_unlock(_T))
+DEFINE_FREE(mutex, struct mutex *, if (_T) mutex_unlock(_T))
+
#endif /* __LINUX_MUTEX_H */
diff --git a/include/linux/percpu.h b/include/linux/percpu.h
index 42125cf9c506..b3b458442330 100644
--- a/include/linux/percpu.h
+++ b/include/linux/percpu.h
@@ -8,6 +8,7 @@
#include <linux/cpumask.h>
#include <linux/pfn.h>
#include <linux/init.h>
+#include <linux/cleanup.h>
#include <asm/percpu.h>
@@ -125,6 +126,9 @@ extern void __init setup_per_cpu_areas(void);
extern void __percpu *__alloc_percpu_gfp(size_t size, size_t align, gfp_t gfp) __alloc_size(1);
extern void __percpu *__alloc_percpu(size_t size, size_t align) __alloc_size(1);
extern void free_percpu(void __percpu *__pdata);
+
+DEFINE_FREE(free_percpu, void __percpu *, free_percpu(_T))
+
extern phys_addr_t per_cpu_ptr_to_phys(void *addr);
#define alloc_percpu_gfp(type, gfp) \
diff --git a/include/linux/preempt.h b/include/linux/preempt.h
index 0df425bf9bd7..1424670df161 100644
--- a/include/linux/preempt.h
+++ b/include/linux/preempt.h
@@ -8,6 +8,7 @@
*/
#include <linux/linkage.h>
+#include <linux/cleanup.h>
#include <linux/list.h>
/*
@@ -463,4 +464,8 @@ static __always_inline void preempt_enable_nested(void)
preempt_enable();
}
+DEFINE_LOCK_GUARD_0(preempt, preempt_disable(), preempt_enable())
+DEFINE_LOCK_GUARD_0(preempt_notrace, preempt_disable_notrace(), preempt_enable_notrace())
+DEFINE_LOCK_GUARD_0(migrate, migrate_disable(), migrate_enable())
+
#endif /* __LINUX_PREEMPT_H */
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index 7d9c2a63b7cd..5e5f920ade90 100644
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -27,6 +27,7 @@
#include <linux/preempt.h>
#include <linux/bottom_half.h>
#include <linux/lockdep.h>
+#include <linux/cleanup.h>
#include <asm/processor.h>
#include <linux/cpumask.h>
#include <linux/context_tracking_irq.h>
@@ -1057,4 +1058,6 @@ rcu_head_after_call_rcu(struct rcu_head *rhp, rcu_callback_t f)
extern int rcu_expedited;
extern int rcu_normal;
+DEFINE_LOCK_GUARD_0(rcu, rcu_read_lock(), rcu_read_unlock())
+
#endif /* __LINUX_RCUPDATE_H */
diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h
index efa5c324369a..1dd530ce8b45 100644
--- a/include/linux/rwsem.h
+++ b/include/linux/rwsem.h
@@ -15,6 +15,7 @@
#include <linux/spinlock.h>
#include <linux/atomic.h>
#include <linux/err.h>
+#include <linux/cleanup.h>
#ifdef CONFIG_DEBUG_LOCK_ALLOC
# define __RWSEM_DEP_MAP_INIT(lockname) \
@@ -201,6 +202,13 @@ extern void up_read(struct rw_semaphore *sem);
*/
extern void up_write(struct rw_semaphore *sem);
+DEFINE_GUARD(rwsem_read, struct rw_semaphore *, down_read(_T), up_read(_T))
+DEFINE_GUARD(rwsem_write, struct rw_semaphore *, down_write(_T), up_write(_T))
+
+DEFINE_FREE(up_read, struct rw_semaphore *, if (_T) up_read(_T))
+DEFINE_FREE(up_write, struct rw_semaphore *, if (_T) up_write(_T))
+
+
/*
* downgrade write lock to read lock
*/
diff --git a/include/linux/sched/task.h b/include/linux/sched/task.h
index e0f5ac90a228..dd35ce28bb90 100644
--- a/include/linux/sched/task.h
+++ b/include/linux/sched/task.h
@@ -125,6 +125,8 @@ static inline void put_task_struct(struct task_struct *t)
__put_task_struct(t);
}
+DEFINE_FREE(put_task, struct task_struct *, if (_T) put_task_struct(_T))
+
static inline void put_task_struct_many(struct task_struct *t, int nr)
{
if (refcount_sub_and_test(nr, &t->usage))
diff --git a/include/linux/slab.h b/include/linux/slab.h
index 791f7453a04f..848c7c82ad5a 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -18,6 +18,7 @@
#include <linux/types.h>
#include <linux/workqueue.h>
#include <linux/percpu-refcount.h>
+#include <linux/cleanup.h>
/*
@@ -226,6 +227,8 @@ void kfree(const void *objp);
void kfree_sensitive(const void *objp);
size_t __ksize(const void *objp);
+DEFINE_FREE(kfree, void *, if (_T) kfree(_T))
+
/**
* ksize - Report actual allocation size of associated object
*
diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h
index be48f1cb1878..31d3d747a9db 100644
--- a/include/linux/spinlock.h
+++ b/include/linux/spinlock.h
@@ -61,6 +61,7 @@
#include <linux/stringify.h>
#include <linux/bottom_half.h>
#include <linux/lockdep.h>
+#include <linux/cleanup.h>
#include <asm/barrier.h>
#include <asm/mmiowb.h>
@@ -502,5 +503,35 @@ int __alloc_bucket_spinlocks(spinlock_t **locks, unsigned int *lock_mask,
void free_bucket_spinlocks(spinlock_t *locks);
+DEFINE_LOCK_GUARD_1(raw_spinlock, raw_spinlock_t,
+ raw_spin_lock(_T->lock),
+ raw_spin_unlock(_T->lock))
+
+DEFINE_LOCK_GUARD_1(raw_spinlock_nested, raw_spinlock_t,
+ raw_spin_lock_nested(_T->lock, SINGLE_DEPTH_NESTING),
+ raw_spin_unlock(_T->lock))
+
+DEFINE_LOCK_GUARD_1(raw_spinlock_irq, raw_spinlock_t,
+ raw_spin_lock_irq(_T->lock),
+ raw_spin_unlock_irq(_T->lock))
+
+DEFINE_LOCK_GUARD_1(raw_spinlock_irqsave, raw_spinlock_t,
+ raw_spin_lock_irqsave(_T->lock, _T->flags),
+ raw_spin_unlock_irqrestore(_T->lock, _T->flags),
+ unsigned long flags)
+
+DEFINE_LOCK_GUARD_1(spinlock, spinlock_t,
+ spin_lock(_T->lock),
+ spin_unlock(_T->lock))
+
+DEFINE_LOCK_GUARD_1(spinlock_irq, spinlock_t,
+ spin_lock_irq(_T->lock),
+ spin_unlock_irq(_T->lock))
+
+DEFINE_LOCK_GUARD_1(spinlock_irqsave, spinlock_t,
+ spin_lock_irqsave(_T->lock, _T->flags),
+ spin_unlock_irqrestore(_T->lock, _T->flags),
+ unsigned long flags)
+
#undef __LINUX_INSIDE_SPINLOCK_H
#endif /* __LINUX_SPINLOCK_H */
diff --git a/include/linux/srcu.h b/include/linux/srcu.h
index eb92a50a4599..127ef3b2e607 100644
--- a/include/linux/srcu.h
+++ b/include/linux/srcu.h
@@ -343,4 +343,9 @@ static inline void smp_mb__after_srcu_read_unlock(void)
/* __srcu_read_unlock has smp_mb() internally so nothing to do here. */
}
+DEFINE_LOCK_GUARD_1(srcu, struct srcu_struct,
+ _T->idx = srcu_read_lock(_T->lock),
+ srcu_read_unlock(_T->lock, _T->idx),
+ int idx)
+
#endif
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 7bfa4d39d17f..880fde13d9b8 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -5046,7 +5046,7 @@ sub process {
if|for|while|switch|return|case|
volatile|__volatile__|
__attribute__|format|__extension__|
- asm|__asm__)$/x)
+ asm|__asm__|scoped_guard)$/x)
{
# cpp #define statements have non-optional spaces, ie
# if there is a space between the name and the open
diff --git a/security/apparmor/include/lib.h b/security/apparmor/include/lib.h
index f1a29ab7ea1b..73c8a32c6861 100644
--- a/security/apparmor/include/lib.h
+++ b/security/apparmor/include/lib.h
@@ -232,7 +232,7 @@ void aa_policy_destroy(struct aa_policy *policy);
*/
#define fn_label_build(L, P, GFP, FN) \
({ \
- __label__ __cleanup, __done; \
+ __label__ __do_cleanup, __done; \
struct aa_label *__new_; \
\
if ((L)->size > 1) { \
@@ -250,7 +250,7 @@ void aa_policy_destroy(struct aa_policy *policy);
__new_ = (FN); \
AA_BUG(!__new_); \
if (IS_ERR(__new_)) \
- goto __cleanup; \
+ goto __do_cleanup; \
__lvec[__j++] = __new_; \
} \
for (__j = __count = 0; __j < (L)->size; __j++) \
@@ -272,7 +272,7 @@ void aa_policy_destroy(struct aa_policy *policy);
vec_cleanup(profile, __pvec, __count); \
} else \
__new_ = NULL; \
-__cleanup: \
+__do_cleanup: \
vec_cleanup(label, __lvec, (L)->size); \
} else { \
(P) = labels_profile(L); \
generated by cgit (git 2.34.1) at 2024-05-25 11:39:33 +0000