diff options
| author | Nysal Jan K.A <nysal@linux.ibm.com> | 2023-02-24 16:09:40 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2023-04-04 22:11:03 +1000 |
| commit | b0bbe5a2915201e3231e788d716d39dc54493b03 (patch) | |
| tree | a99aa808f5bab830823af2aee2846ad208e80312 | |
| parent | ac9c8901cb10aab043bf3599d19eebacfcda2858 (diff) | |
powerpc/atomics: Remove unused function
Remove arch_atomic_try_cmpxchg_lock function as it is no longer used
since commit 9f61521c7a28 ("powerpc/qspinlock: powerpc qspinlock
implementation")
Signed-off-by: Nysal Jan K.A <nysal@linux.ibm.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230224103940.1328725-1-nysal@linux.ibm.com
| -rw-r--r-- | arch/powerpc/include/asm/atomic.h | 29 |
1 files changed, 0 insertions, 29 deletions
diff --git a/arch/powerpc/include/asm/atomic.h b/arch/powerpc/include/asm/atomic.h index 486ab7889121..b3a53830446b 100644 --- a/arch/powerpc/include/asm/atomic.h +++ b/arch/powerpc/include/asm/atomic.h @@ -130,35 +130,6 @@ ATOMIC_OPS(xor, xor, "", K) #define arch_atomic_xchg_relaxed(v, new) \ arch_xchg_relaxed(&((v)->counter), (new)) -/* - * Don't want to override the generic atomic_try_cmpxchg_acquire, because - * we add a lock hint to the lwarx, which may not be wanted for the - * _acquire case (and is not used by the other _acquire variants so it - * would be a surprise). - */ -static __always_inline bool -arch_atomic_try_cmpxchg_lock(atomic_t *v, int *old, int new) -{ - int r, o = *old; - unsigned int eh = IS_ENABLED(CONFIG_PPC64); - - __asm__ __volatile__ ( -"1: lwarx %0,0,%2,%[eh] # atomic_try_cmpxchg_acquire \n" -" cmpw 0,%0,%3 \n" -" bne- 2f \n" -" stwcx. %4,0,%2 \n" -" bne- 1b \n" -"\t" PPC_ACQUIRE_BARRIER " \n" -"2: \n" - : "=&r" (r), "+m" (v->counter) - : "r" (&v->counter), "r" (o), "r" (new), [eh] "n" (eh) - : "cr0", "memory"); - - if (unlikely(r != o)) - *old = r; - return likely(r == o); -} - /** * atomic_fetch_add_unless - add unless the number is a given value * @v: pointer of type atomic_t |