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authorMark Rutland <mark.rutland@arm.com>2018-06-21 13:13:19 +0100
committerIngo Molnar <mingo@kernel.org>2018-06-21 14:25:24 +0200
commit9837559d8eb01ce834e56fc9a567c1d94ebd3698 (patch)
treebb475ca639022bddfc8bbdc9c1b963ab0ff30def /arch/m68k
parent18cc1814d4e7560412c9c8c6d28f9d6782c8b402 (diff)
atomics/treewide: Make unconditional inc/dec ops optional
Many of the inc/dec ops are mandatory, but for most architectures inc/dec are simply trivial wrappers around their corresponding add/sub ops. Let's make all the inc/dec ops optional, so that we can get rid of these boilerplate wrappers. The instrumented atomics are updated accordingly. There should be no functional change as a result of this patch. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Palmer Dabbelt <palmer@sifive.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/lkml/20180621121321.4761-17-mark.rutland@arm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/m68k')
-rw-r--r--arch/m68k/include/asm/atomic.h5
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/m68k/include/asm/atomic.h b/arch/m68k/include/asm/atomic.h
index 9df09c876fa2..47228b0d4163 100644
--- a/arch/m68k/include/asm/atomic.h
+++ b/arch/m68k/include/asm/atomic.h
@@ -126,11 +126,13 @@ static inline void atomic_inc(atomic_t *v)
{
__asm__ __volatile__("addql #1,%0" : "+m" (*v));
}
+#define atomic_inc atomic_inc
static inline void atomic_dec(atomic_t *v)
{
__asm__ __volatile__("subql #1,%0" : "+m" (*v));
}
+#define atomic_dec atomic_dec
static inline int atomic_dec_and_test(atomic_t *v)
{
@@ -192,9 +194,6 @@ static inline int atomic_xchg(atomic_t *v, int new)
#endif /* !CONFIG_RMW_INSNS */
-#define atomic_dec_return(v) atomic_sub_return(1, (v))
-#define atomic_inc_return(v) atomic_add_return(1, (v))
-
static inline int atomic_sub_and_test(int i, atomic_t *v)
{
char c;