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locking/arch: Remove dummy arch_{read,spin,write}_lock_flags() implementations 

The arch_{read,spin,write}_lock_flags() macros are simply mapped to the
non-flags versions by the majority of architectures, so do this in core
code and remove the dummy implementations. Also remove the implementation
in spinlock_up.h, since all callers of do_raw_spin_lock_flags() call
local_irq_save(flags) anyway.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: paulmck@linux.vnet.ibm.com
Link: http://lkml.kernel.org/r/1507055129-12300-4-git-send-email-will.deacon@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Will Deacon 2017-10-03 19:25:29 +01:00 committed by Ingo Molnar
parent 0160fb177d
commit a4c1887d4c
27 changed files with 20 additions and 102 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/alpha/include/asm/spinlock.h
View File

@ -13,7 +13,6 @@
* We make no fairness assumptions. They have a cost. * We make no fairness assumptions. They have a cost.
*/ */
#define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock)
#define arch_spin_is_locked(x) ((x)->lock != 0) #define arch_spin_is_locked(x) ((x)->lock != 0)
static inline int arch_spin_value_unlocked(arch_spinlock_t lock) static inline int arch_spin_value_unlocked(arch_spinlock_t lock)
@ -160,7 +159,4 @@ static inline void arch_write_unlock(arch_rwlock_t * lock)
lock->lock = 0; lock->lock = 0;
} }
#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#endif /* _ALPHA_SPINLOCK_H */ #endif /* _ALPHA_SPINLOCK_H */

4
arch/arc/include/asm/spinlock.h
View File

@ -14,7 +14,6 @@
#include <asm/barrier.h> #include <asm/barrier.h>
#define arch_spin_is_locked(x) ((x)->slock != __ARCH_SPIN_LOCK_UNLOCKED__) #define arch_spin_is_locked(x) ((x)->slock != __ARCH_SPIN_LOCK_UNLOCKED__)
#define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock)
#ifdef CONFIG_ARC_HAS_LLSC #ifdef CONFIG_ARC_HAS_LLSC
@ -410,7 +409,4 @@ static inline void arch_write_unlock(arch_rwlock_t *rw)
#endif #endif
#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#endif /* __ASM_SPINLOCK_H */ #endif /* __ASM_SPINLOCK_H */

5
arch/arm/include/asm/spinlock.h
View File

@ -52,8 +52,6 @@ static inline void dsb_sev(void)
* memory. * memory.
*/ */
#define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock)
static inline void arch_spin_lock(arch_spinlock_t *lock) static inline void arch_spin_lock(arch_spinlock_t *lock)
{ {
unsigned long tmp; unsigned long tmp;
@ -270,7 +268,4 @@ static inline int arch_read_trylock(arch_rwlock_t *rw)
} }
} }
#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#endif /* __ASM_SPINLOCK_H */ #endif /* __ASM_SPINLOCK_H */

5
arch/arm64/include/asm/spinlock.h
View File

@ -27,8 +27,6 @@
* instructions. * instructions.
*/ */
#define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock)
static inline void arch_spin_lock(arch_spinlock_t *lock) static inline void arch_spin_lock(arch_spinlock_t *lock)
{ {
unsigned int tmp; unsigned int tmp;
@ -303,9 +301,6 @@ static inline int arch_read_trylock(arch_rwlock_t *rw)
/* read_can_lock - would read_trylock() succeed? */ /* read_can_lock - would read_trylock() succeed? */
#define arch_read_can_lock(x) ((x)->lock < 0x80000000) #define arch_read_can_lock(x) ((x)->lock < 0x80000000)
#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
/* See include/linux/spinlock.h */ /* See include/linux/spinlock.h */
#define smp_mb__after_spinlock() smp_mb() #define smp_mb__after_spinlock() smp_mb()

6
arch/blackfin/include/asm/spinlock.h
View File

@ -36,8 +36,6 @@ static inline void arch_spin_lock(arch_spinlock_t *lock)
__raw_spin_lock_asm(&lock->lock); __raw_spin_lock_asm(&lock->lock);
} }
#define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock)
static inline int arch_spin_trylock(arch_spinlock_t *lock) static inline int arch_spin_trylock(arch_spinlock_t *lock)
{ {
return __raw_spin_trylock_asm(&lock->lock); return __raw_spin_trylock_asm(&lock->lock);
@ -53,8 +51,6 @@ static inline void arch_read_lock(arch_rwlock_t *rw)
__raw_read_lock_asm(&rw->lock); __raw_read_lock_asm(&rw->lock);
} }
#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
static inline int arch_read_trylock(arch_rwlock_t *rw) static inline int arch_read_trylock(arch_rwlock_t *rw)
{ {
return __raw_read_trylock_asm(&rw->lock); return __raw_read_trylock_asm(&rw->lock);
@ -70,8 +66,6 @@ static inline void arch_write_lock(arch_rwlock_t *rw)
__raw_write_lock_asm(&rw->lock); __raw_write_lock_asm(&rw->lock);
} }
#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
static inline int arch_write_trylock(arch_rwlock_t *rw) static inline int arch_write_trylock(arch_rwlock_t *rw)
{ {
return __raw_write_trylock_asm(&rw->lock); return __raw_write_trylock_asm(&rw->lock);

5
arch/hexagon/include/asm/spinlock.h
View File

@ -167,11 +167,6 @@ static inline unsigned int arch_spin_trylock(arch_spinlock_t *lock)
/* /*
* SMP spinlocks are intended to allow only a single CPU at the lock * SMP spinlocks are intended to allow only a single CPU at the lock
*/ */
#define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock)
#define arch_spin_is_locked(x) ((x)->lock != 0) #define arch_spin_is_locked(x) ((x)->lock != 0)
#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#endif #endif

5
arch/ia64/include/asm/spinlock.h
View File

@ -126,6 +126,7 @@ static __always_inline void arch_spin_lock_flags(arch_spinlock_t *lock,
{ {
arch_spin_lock(lock); arch_spin_lock(lock);
} }
#define arch_spin_lock_flags arch_spin_lock_flags
#ifdef ASM_SUPPORTED #ifdef ASM_SUPPORTED
@ -153,6 +154,7 @@ arch_read_lock_flags(arch_rwlock_t *lock, unsigned long flags)
: "p6", "p7", "r2", "memory"); : "p6", "p7", "r2", "memory");
} }
#define arch_read_lock_flags arch_read_lock_flags
#define arch_read_lock(lock) arch_read_lock_flags(lock, 0) #define arch_read_lock(lock) arch_read_lock_flags(lock, 0)
#else /* !ASM_SUPPORTED */ #else /* !ASM_SUPPORTED */
@ -205,6 +207,7 @@ arch_write_lock_flags(arch_rwlock_t *lock, unsigned long flags)
: "ar.ccv", "p6", "p7", "r2", "r29", "memory"); : "ar.ccv", "p6", "p7", "r2", "r29", "memory");
} }
#define arch_write_lock_flags arch_write_lock_flags
#define arch_write_lock(rw) arch_write_lock_flags(rw, 0) #define arch_write_lock(rw) arch_write_lock_flags(rw, 0)
#define arch_write_trylock(rw) \ #define arch_write_trylock(rw) \
@ -228,8 +231,6 @@ static inline void arch_write_unlock(arch_rwlock_t *x)
#else /* !ASM_SUPPORTED */ #else /* !ASM_SUPPORTED */
#define arch_write_lock_flags(l, flags) arch_write_lock(l)
#define arch_write_lock(l) \ #define arch_write_lock(l) \
({ \ ({ \
__u64 ia64_val, ia64_set_val = ia64_dep_mi(-1, 0, 31, 1); \ __u64 ia64_val, ia64_set_val = ia64_dep_mi(-1, 0, 31, 1); \

4
arch/m32r/include/asm/spinlock.h
View File

@ -28,7 +28,6 @@
*/ */
#define arch_spin_is_locked(x) (*(volatile int *)(&(x)->slock) <= 0) #define arch_spin_is_locked(x) (*(volatile int *)(&(x)->slock) <= 0)
#define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock)
/** /**
* arch_spin_trylock - Try spin lock and return a result * arch_spin_trylock - Try spin lock and return a result
@ -305,7 +304,4 @@ static inline int arch_write_trylock(arch_rwlock_t *lock)
return 0; return 0;
} }
#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#endif /* _ASM_M32R_SPINLOCK_H */ #endif /* _ASM_M32R_SPINLOCK_H */

5
arch/metag/include/asm/spinlock.h
View File

@ -15,9 +15,4 @@
* locked. * locked.
*/ */
#define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock)
#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#endif /* __ASM_SPINLOCK_H */ #endif /* __ASM_SPINLOCK_H */

3
arch/metag/include/asm/spinlock_lnkget.h
View File

@ -209,7 +209,4 @@ static inline int arch_read_trylock(arch_rwlock_t *rw)
return tmp; return tmp;
} }
#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#endif /* __ASM_SPINLOCK_LNKGET_H */ #endif /* __ASM_SPINLOCK_LNKGET_H */

3
arch/mips/include/asm/spinlock.h
View File

@ -13,7 +13,4 @@
#include <asm/qrwlock.h> #include <asm/qrwlock.h>
#include <asm/qspinlock.h> #include <asm/qspinlock.h>
#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#endif /* _ASM_SPINLOCK_H */ #endif /* _ASM_SPINLOCK_H */

4
arch/mn10300/include/asm/spinlock.h
View File

@ -84,6 +84,7 @@ static inline void arch_spin_lock_flags(arch_spinlock_t *lock,
: "d" (flags), "a"(&lock->slock), "i"(EPSW_IE | MN10300_CLI_LEVEL) : "d" (flags), "a"(&lock->slock), "i"(EPSW_IE | MN10300_CLI_LEVEL)
: "memory", "cc"); : "memory", "cc");
} }
#define arch_spin_lock_flags arch_spin_lock_flags
#ifdef __KERNEL__ #ifdef __KERNEL__
@ -171,9 +172,6 @@ static inline int arch_write_trylock(arch_rwlock_t *lock)
return 0; return 0;
} }
#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#define _raw_spin_relax(lock) cpu_relax() #define _raw_spin_relax(lock) cpu_relax()
#define _raw_read_relax(lock) cpu_relax() #define _raw_read_relax(lock) cpu_relax()
#define _raw_write_relax(lock) cpu_relax() #define _raw_write_relax(lock) cpu_relax()

4
arch/parisc/include/asm/spinlock.h
View File

@ -31,6 +31,7 @@ static inline void arch_spin_lock_flags(arch_spinlock_t *x,
cpu_relax(); cpu_relax();
mb(); mb();
} }
#define arch_spin_lock_flags arch_spin_lock_flags
static inline void arch_spin_unlock(arch_spinlock_t *x) static inline void arch_spin_unlock(arch_spinlock_t *x)
{ {
@ -168,7 +169,4 @@ static __inline__ int arch_write_trylock(arch_rwlock_t *rw)
return result; return result;
} }
#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#endif /* __ASM_SPINLOCK_H */ #endif /* __ASM_SPINLOCK_H */

4
arch/powerpc/include/asm/spinlock.h
View File

@ -161,6 +161,7 @@ void arch_spin_lock_flags(arch_spinlock_t *lock, unsigned long flags)
local_irq_restore(flags_dis); local_irq_restore(flags_dis);
} }
} }
#define arch_spin_lock_flags arch_spin_lock_flags
static inline void arch_spin_unlock(arch_spinlock_t *lock) static inline void arch_spin_unlock(arch_spinlock_t *lock)
{ {
@ -299,9 +300,6 @@ static inline void arch_write_unlock(arch_rwlock_t *rw)
rw->lock = 0; rw->lock = 0;
} }
#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#define arch_spin_relax(lock) __spin_yield(lock) #define arch_spin_relax(lock) __spin_yield(lock)
#define arch_read_relax(lock) __rw_yield(lock) #define arch_read_relax(lock) __rw_yield(lock)
#define arch_write_relax(lock) __rw_yield(lock) #define arch_write_relax(lock) __rw_yield(lock)

4
arch/s390/include/asm/spinlock.h
View File

@ -81,6 +81,7 @@ static inline void arch_spin_lock_flags(arch_spinlock_t *lp,
if (!arch_spin_trylock_once(lp)) if (!arch_spin_trylock_once(lp))
arch_spin_lock_wait_flags(lp, flags); arch_spin_lock_wait_flags(lp, flags);
} }
#define arch_spin_lock_flags arch_spin_lock_flags
static inline int arch_spin_trylock(arch_spinlock_t *lp) static inline int arch_spin_trylock(arch_spinlock_t *lp)
{ {
@ -114,9 +115,6 @@ static inline void arch_spin_unlock(arch_spinlock_t *lp)
extern int _raw_read_trylock_retry(arch_rwlock_t *lp); extern int _raw_read_trylock_retry(arch_rwlock_t *lp);
extern int _raw_write_trylock_retry(arch_rwlock_t *lp); extern int _raw_write_trylock_retry(arch_rwlock_t *lp);
#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
static inline int arch_read_trylock_once(arch_rwlock_t *rw) static inline int arch_read_trylock_once(arch_rwlock_t *rw)
{ {
int old = ACCESS_ONCE(rw->lock); int old = ACCESS_ONCE(rw->lock);

4
arch/sh/include/asm/spinlock-cas.h
View File

@ -27,7 +27,6 @@ static inline unsigned __sl_cas(volatile unsigned *p, unsigned old, unsigned new
*/ */
#define arch_spin_is_locked(x) ((x)->lock <= 0) #define arch_spin_is_locked(x) ((x)->lock <= 0)
#define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock)
static inline void arch_spin_lock(arch_spinlock_t *lock) static inline void arch_spin_lock(arch_spinlock_t *lock)
{ {
@ -90,7 +89,4 @@ static inline int arch_write_trylock(arch_rwlock_t *rw)
return __sl_cas(&rw->lock, RW_LOCK_BIAS, 0) == RW_LOCK_BIAS; return __sl_cas(&rw->lock, RW_LOCK_BIAS, 0) == RW_LOCK_BIAS;
} }
#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#endif /* __ASM_SH_SPINLOCK_CAS_H */ #endif /* __ASM_SH_SPINLOCK_CAS_H */

4
arch/sh/include/asm/spinlock-llsc.h
View File

@ -19,7 +19,6 @@
*/ */
#define arch_spin_is_locked(x) ((x)->lock <= 0) #define arch_spin_is_locked(x) ((x)->lock <= 0)
#define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock)
/* /*
* Simple spin lock operations. There are two variants, one clears IRQ's * Simple spin lock operations. There are two variants, one clears IRQ's
@ -197,7 +196,4 @@ static inline int arch_write_trylock(arch_rwlock_t *rw)
return (oldval > (RW_LOCK_BIAS - 1)); return (oldval > (RW_LOCK_BIAS - 1));
} }
#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#endif /* __ASM_SH_SPINLOCK_LLSC_H */ #endif /* __ASM_SH_SPINLOCK_LLSC_H */

4
arch/sparc/include/asm/spinlock_32.h
View File

@ -182,10 +182,6 @@ static inline int __arch_read_trylock(arch_rwlock_t *rw)
res; \ res; \
}) })
#define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock)
#define arch_read_lock_flags(rw, flags) arch_read_lock(rw)
#define arch_write_lock_flags(rw, flags) arch_write_lock(rw)
#endif /* !(__ASSEMBLY__) */ #endif /* !(__ASSEMBLY__) */
#endif /* __SPARC_SPINLOCK_H */ #endif /* __SPARC_SPINLOCK_H */

3
arch/sparc/include/asm/spinlock_64.h
View File

@ -13,9 +13,6 @@
#include <asm/qrwlock.h> #include <asm/qrwlock.h>
#include <asm/qspinlock.h> #include <asm/qspinlock.h>
#define arch_read_lock_flags(p, f) arch_read_lock(p)
#define arch_write_lock_flags(p, f) arch_write_lock(p)
#endif /* !(__ASSEMBLY__) */ #endif /* !(__ASSEMBLY__) */
#endif /* !(__SPARC64_SPINLOCK_H) */ #endif /* !(__SPARC64_SPINLOCK_H) */

6
arch/tile/include/asm/spinlock_32.h
View File

@ -51,9 +51,6 @@ static inline int arch_spin_is_locked(arch_spinlock_t *lock)
void arch_spin_lock(arch_spinlock_t *lock); void arch_spin_lock(arch_spinlock_t *lock);
/* We cannot take an interrupt after getting a ticket, so don't enable them. */
#define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock)
int arch_spin_trylock(arch_spinlock_t *lock); int arch_spin_trylock(arch_spinlock_t *lock);
static inline void arch_spin_unlock(arch_spinlock_t *lock) static inline void arch_spin_unlock(arch_spinlock_t *lock)
@ -109,7 +106,4 @@ void arch_read_unlock(arch_rwlock_t *rwlock);
*/ */
void arch_write_unlock(arch_rwlock_t *rwlock); void arch_write_unlock(arch_rwlock_t *rwlock);
#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#endif /* _ASM_TILE_SPINLOCK_32_H */ #endif /* _ASM_TILE_SPINLOCK_32_H */

6
arch/tile/include/asm/spinlock_64.h
View File

@ -75,9 +75,6 @@ static inline void arch_spin_lock(arch_spinlock_t *lock)
/* Try to get the lock, and return whether we succeeded. */ /* Try to get the lock, and return whether we succeeded. */
int arch_spin_trylock(arch_spinlock_t *lock); int arch_spin_trylock(arch_spinlock_t *lock);
/* We cannot take an interrupt after getting a ticket, so don't enable them. */
#define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock)
/* /*
* Read-write spinlocks, allowing multiple readers * Read-write spinlocks, allowing multiple readers
* but only one writer. * but only one writer.
@ -138,7 +135,4 @@ static inline int arch_write_trylock(arch_rwlock_t *rw)
return 0; return 0;
} }
#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#endif /* _ASM_TILE_SPINLOCK_64_H */ #endif /* _ASM_TILE_SPINLOCK_64_H */

3
arch/x86/include/asm/spinlock.h
View File

@ -41,7 +41,4 @@
#include <asm/qrwlock.h> #include <asm/qrwlock.h>
#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#endif /* _ASM_X86_SPINLOCK_H */ #endif /* _ASM_X86_SPINLOCK_H */

5
arch/xtensa/include/asm/spinlock.h
View File

@ -33,8 +33,6 @@
#define arch_spin_is_locked(x) ((x)->slock != 0) #define arch_spin_is_locked(x) ((x)->slock != 0)
#define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock)
static inline void arch_spin_lock(arch_spinlock_t *lock) static inline void arch_spin_lock(arch_spinlock_t *lock)
{ {
unsigned long tmp; unsigned long tmp;
@ -198,7 +196,4 @@ static inline void arch_read_unlock(arch_rwlock_t *rw)
: "memory"); : "memory");
} }
#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#endif /* _XTENSA_SPINLOCK_H */ #endif /* _XTENSA_SPINLOCK_H */

1
include/asm-generic/qspinlock.h
View File

@ -121,6 +121,5 @@ static __always_inline bool virt_spin_lock(struct qspinlock *lock)
#define arch_spin_lock(l) queued_spin_lock(l) #define arch_spin_lock(l) queued_spin_lock(l)
#define arch_spin_trylock(l) queued_spin_trylock(l) #define arch_spin_trylock(l) queued_spin_trylock(l)
#define arch_spin_unlock(l) queued_spin_unlock(l) #define arch_spin_unlock(l) queued_spin_unlock(l)
#define arch_spin_lock_flags(l, f) queued_spin_lock(l)
#endif /* __ASM_GENERIC_QSPINLOCK_H */ #endif /* __ASM_GENERIC_QSPINLOCK_H */

9
include/linux/rwlock.h
View File

@ -38,6 +38,15 @@ do { \
extern int do_raw_write_trylock(rwlock_t *lock); extern int do_raw_write_trylock(rwlock_t *lock);
extern void do_raw_write_unlock(rwlock_t *lock) __releases(lock); extern void do_raw_write_unlock(rwlock_t *lock) __releases(lock);
#else #else
#ifndef arch_read_lock_flags
# define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#endif
#ifndef arch_write_lock_flags
# define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#endif
# define do_raw_read_lock(rwlock) do {__acquire(lock); arch_read_lock(&(rwlock)->raw_lock); } while (0) # define do_raw_read_lock(rwlock) do {__acquire(lock); arch_read_lock(&(rwlock)->raw_lock); } while (0)
# define do_raw_read_lock_flags(lock, flags) \ # define do_raw_read_lock_flags(lock, flags) \
do {__acquire(lock); arch_read_lock_flags(&(lock)->raw_lock, *(flags)); } while (0) do {__acquire(lock); arch_read_lock_flags(&(lock)->raw_lock, *(flags)); } while (0)

4
include/linux/spinlock.h
View File

@ -165,6 +165,10 @@ static inline void do_raw_spin_lock(raw_spinlock_t *lock) __acquires(lock)
arch_spin_lock(&lock->raw_lock); arch_spin_lock(&lock->raw_lock);
} }
#ifndef arch_spin_lock_flags
#define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock)
#endif
static inline void static inline void
do_raw_spin_lock_flags(raw_spinlock_t *lock, unsigned long *flags) __acquires(lock) do_raw_spin_lock_flags(raw_spinlock_t *lock, unsigned long *flags) __acquires(lock)
{ {

8
include/linux/spinlock_up.h
View File

@ -32,14 +32,6 @@ static inline void arch_spin_lock(arch_spinlock_t *lock)
barrier(); barrier();
} }
static inline void
arch_spin_lock_flags(arch_spinlock_t *lock, unsigned long flags)
{
local_irq_save(flags);
lock->slock = 0;
barrier();
}
static inline int arch_spin_trylock(arch_spinlock_t *lock) static inline int arch_spin_trylock(arch_spinlock_t *lock)
{ {
char oldval = lock->slock; char oldval = lock->slock;