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-rw-r--r--arch/sparc/include/asm/atomic_64.h7
-rw-r--r--arch/sparc/include/asm/bitops_64.h5
-rw-r--r--arch/sparc/include/asm/spinlock_64.h14
-rw-r--r--arch/sparc/include/asm/system_64.h35
-rw-r--r--arch/sparc/include/asm/tsb.h6
-rw-r--r--arch/sparc64/kernel/smp.c11
-rw-r--r--arch/sparc64/kernel/trampoline.S4
-rw-r--r--arch/sparc64/kernel/traps.c1
-rw-r--r--arch/sparc64/kernel/tsb.S6
-rw-r--r--arch/sparc64/lib/atomic.S26
-rw-r--r--arch/sparc64/lib/bitops.S24
-rw-r--r--arch/sparc64/lib/rwsem.S7
-rw-r--r--arch/sparc64/mm/init.c2
-rw-r--r--arch/sparc64/mm/tsb.c4
-rw-r--r--arch/sparc64/mm/ultra.S2
15 files changed, 17 insertions, 137 deletions
diff --git a/arch/sparc/include/asm/atomic_64.h b/arch/sparc/include/asm/atomic_64.h
index 2c71ec4a3b1..5982c5ae7f0 100644
--- a/arch/sparc/include/asm/atomic_64.h
+++ b/arch/sparc/include/asm/atomic_64.h
@@ -112,17 +112,10 @@ static inline int atomic64_add_unless(atomic64_t *v, long a, long u)
#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
/* Atomic operations are already serializing */
-#ifdef CONFIG_SMP
-#define smp_mb__before_atomic_dec() membar_storeload_loadload();
-#define smp_mb__after_atomic_dec() membar_storeload_storestore();
-#define smp_mb__before_atomic_inc() membar_storeload_loadload();
-#define smp_mb__after_atomic_inc() membar_storeload_storestore();
-#else
#define smp_mb__before_atomic_dec() barrier()
#define smp_mb__after_atomic_dec() barrier()
#define smp_mb__before_atomic_inc() barrier()
#define smp_mb__after_atomic_inc() barrier()
-#endif
#include <asm-generic/atomic.h>
#endif /* !(__ARCH_SPARC64_ATOMIC__) */
diff --git a/arch/sparc/include/asm/bitops_64.h b/arch/sparc/include/asm/bitops_64.h
index bb87b808022..e72ac9cdfb9 100644
--- a/arch/sparc/include/asm/bitops_64.h
+++ b/arch/sparc/include/asm/bitops_64.h
@@ -23,13 +23,8 @@ extern void change_bit(unsigned long nr, volatile unsigned long *addr);
#include <asm-generic/bitops/non-atomic.h>
-#ifdef CONFIG_SMP
-#define smp_mb__before_clear_bit() membar_storeload_loadload()
-#define smp_mb__after_clear_bit() membar_storeload_storestore()
-#else
#define smp_mb__before_clear_bit() barrier()
#define smp_mb__after_clear_bit() barrier()
-#endif
#include <asm-generic/bitops/ffz.h>
#include <asm-generic/bitops/__ffs.h>
diff --git a/arch/sparc/include/asm/spinlock_64.h b/arch/sparc/include/asm/spinlock_64.h
index fbac9d00744..c4d274d330e 100644
--- a/arch/sparc/include/asm/spinlock_64.h
+++ b/arch/sparc/include/asm/spinlock_64.h
@@ -33,12 +33,10 @@ static inline void __raw_spin_lock(raw_spinlock_t *lock)
__asm__ __volatile__(
"1: ldstub [%1], %0\n"
-" membar #StoreLoad | #StoreStore\n"
" brnz,pn %0, 2f\n"
" nop\n"
" .subsection 2\n"
"2: ldub [%1], %0\n"
-" membar #LoadLoad\n"
" brnz,pt %0, 2b\n"
" nop\n"
" ba,a,pt %%xcc, 1b\n"
@@ -54,7 +52,6 @@ static inline int __raw_spin_trylock(raw_spinlock_t *lock)
__asm__ __volatile__(
" ldstub [%1], %0\n"
-" membar #StoreLoad | #StoreStore"
: "=r" (result)
: "r" (lock)
: "memory");
@@ -65,7 +62,6 @@ static inline int __raw_spin_trylock(raw_spinlock_t *lock)
static inline void __raw_spin_unlock(raw_spinlock_t *lock)
{
__asm__ __volatile__(
-" membar #StoreStore | #LoadStore\n"
" stb %%g0, [%0]"
: /* No outputs */
: "r" (lock)
@@ -78,14 +74,12 @@ static inline void __raw_spin_lock_flags(raw_spinlock_t *lock, unsigned long fla
__asm__ __volatile__(
"1: ldstub [%2], %0\n"
-" membar #StoreLoad | #StoreStore\n"
" brnz,pn %0, 2f\n"
" nop\n"
" .subsection 2\n"
"2: rdpr %%pil, %1\n"
" wrpr %3, %%pil\n"
"3: ldub [%2], %0\n"
-" membar #LoadLoad\n"
" brnz,pt %0, 3b\n"
" nop\n"
" ba,pt %%xcc, 1b\n"
@@ -108,12 +102,10 @@ static void inline __read_lock(raw_rwlock_t *lock)
"4: add %0, 1, %1\n"
" cas [%2], %0, %1\n"
" cmp %0, %1\n"
-" membar #StoreLoad | #StoreStore\n"
" bne,pn %%icc, 1b\n"
" nop\n"
" .subsection 2\n"
"2: ldsw [%2], %0\n"
-" membar #LoadLoad\n"
" brlz,pt %0, 2b\n"
" nop\n"
" ba,a,pt %%xcc, 4b\n"
@@ -134,7 +126,6 @@ static int inline __read_trylock(raw_rwlock_t *lock)
" add %0, 1, %1\n"
" cas [%2], %0, %1\n"
" cmp %0, %1\n"
-" membar #StoreLoad | #StoreStore\n"
" bne,pn %%icc, 1b\n"
" mov 1, %0\n"
"2:"
@@ -150,7 +141,6 @@ static void inline __read_unlock(raw_rwlock_t *lock)
unsigned long tmp1, tmp2;
__asm__ __volatile__(
-" membar #StoreLoad | #LoadLoad\n"
"1: lduw [%2], %0\n"
" sub %0, 1, %1\n"
" cas [%2], %0, %1\n"
@@ -174,12 +164,10 @@ static void inline __write_lock(raw_rwlock_t *lock)
"4: or %0, %3, %1\n"
" cas [%2], %0, %1\n"
" cmp %0, %1\n"
-" membar #StoreLoad | #StoreStore\n"
" bne,pn %%icc, 1b\n"
" nop\n"
" .subsection 2\n"
"2: lduw [%2], %0\n"
-" membar #LoadLoad\n"
" brnz,pt %0, 2b\n"
" nop\n"
" ba,a,pt %%xcc, 4b\n"
@@ -192,7 +180,6 @@ static void inline __write_lock(raw_rwlock_t *lock)
static void inline __write_unlock(raw_rwlock_t *lock)
{
__asm__ __volatile__(
-" membar #LoadStore | #StoreStore\n"
" stw %%g0, [%0]"
: /* no outputs */
: "r" (lock)
@@ -212,7 +199,6 @@ static int inline __write_trylock(raw_rwlock_t *lock)
" or %0, %4, %1\n"
" cas [%3], %0, %1\n"
" cmp %0, %1\n"
-" membar #StoreLoad | #StoreStore\n"
" bne,pn %%icc, 1b\n"
" nop\n"
" mov 1, %2\n"
diff --git a/arch/sparc/include/asm/system_64.h b/arch/sparc/include/asm/system_64.h
index 8759f2a1b83..7554ad39b5a 100644
--- a/arch/sparc/include/asm/system_64.h
+++ b/arch/sparc/include/asm/system_64.h
@@ -59,20 +59,9 @@ do { __asm__ __volatile__("ba,pt %%xcc, 1f\n\t" \
: : : "memory"); \
} while (0)
-#define mb() \
- membar_safe("#LoadLoad | #LoadStore | #StoreStore | #StoreLoad")
-#define rmb() \
- membar_safe("#LoadLoad")
-#define wmb() \
- membar_safe("#StoreStore")
-#define membar_storeload() \
- membar_safe("#StoreLoad")
-#define membar_storeload_storestore() \
- membar_safe("#StoreLoad | #StoreStore")
-#define membar_storeload_loadload() \
- membar_safe("#StoreLoad | #LoadLoad")
-#define membar_storestore_loadstore() \
- membar_safe("#StoreStore | #LoadStore")
+#define mb() membar_safe("#StoreLoad")
+#define rmb() __asm__ __volatile__("":::"memory")
+#define wmb() __asm__ __volatile__("":::"memory")
#endif
@@ -80,20 +69,20 @@ do { __asm__ __volatile__("ba,pt %%xcc, 1f\n\t" \
#define read_barrier_depends() do { } while(0)
#define set_mb(__var, __value) \
- do { __var = __value; membar_storeload_storestore(); } while(0)
+ do { __var = __value; membar_safe("#StoreLoad"); } while(0)
#ifdef CONFIG_SMP
#define smp_mb() mb()
#define smp_rmb() rmb()
#define smp_wmb() wmb()
-#define smp_read_barrier_depends() read_barrier_depends()
#else
#define smp_mb() __asm__ __volatile__("":::"memory")
#define smp_rmb() __asm__ __volatile__("":::"memory")
#define smp_wmb() __asm__ __volatile__("":::"memory")
-#define smp_read_barrier_depends() do { } while(0)
#endif
+#define smp_read_barrier_depends() do { } while(0)
+
#define flushi(addr) __asm__ __volatile__ ("flush %0" : : "r" (addr) : "memory")
#define flushw_all() __asm__ __volatile__("flushw")
@@ -209,14 +198,12 @@ static inline unsigned long xchg32(__volatile__ unsigned int *m, unsigned int va
unsigned long tmp1, tmp2;
__asm__ __volatile__(
-" membar #StoreLoad | #LoadLoad\n"
" mov %0, %1\n"
"1: lduw [%4], %2\n"
" cas [%4], %2, %0\n"
" cmp %2, %0\n"
" bne,a,pn %%icc, 1b\n"
" mov %1, %0\n"
-" membar #StoreLoad | #StoreStore\n"
: "=&r" (val), "=&r" (tmp1), "=&r" (tmp2)
: "0" (val), "r" (m)
: "cc", "memory");
@@ -228,14 +215,12 @@ static inline unsigned long xchg64(__volatile__ unsigned long *m, unsigned long
unsigned long tmp1, tmp2;
__asm__ __volatile__(
-" membar #StoreLoad | #LoadLoad\n"
" mov %0, %1\n"
"1: ldx [%4], %2\n"
" casx [%4], %2, %0\n"
" cmp %2, %0\n"
" bne,a,pn %%xcc, 1b\n"
" mov %1, %0\n"
-" membar #StoreLoad | #StoreStore\n"
: "=&r" (val), "=&r" (tmp1), "=&r" (tmp2)
: "0" (val), "r" (m)
: "cc", "memory");
@@ -272,9 +257,7 @@ extern void die_if_kernel(char *str, struct pt_regs *regs) __attribute__ ((noret
static inline unsigned long
__cmpxchg_u32(volatile int *m, int old, int new)
{
- __asm__ __volatile__("membar #StoreLoad | #LoadLoad\n"
- "cas [%2], %3, %0\n\t"
- "membar #StoreLoad | #StoreStore"
+ __asm__ __volatile__("cas [%2], %3, %0"
: "=&r" (new)
: "0" (new), "r" (m), "r" (old)
: "memory");
@@ -285,9 +268,7 @@ __cmpxchg_u32(volatile int *m, int old, int new)
static inline unsigned long
__cmpxchg_u64(volatile long *m, unsigned long old, unsigned long new)
{
- __asm__ __volatile__("membar #StoreLoad | #LoadLoad\n"
- "casx [%2], %3, %0\n\t"
- "membar #StoreLoad | #StoreStore"
+ __asm__ __volatile__("casx [%2], %3, %0"
: "=&r" (new)
: "0" (new), "r" (m), "r" (old)
: "memory");
diff --git a/arch/sparc/include/asm/tsb.h b/arch/sparc/include/asm/tsb.h
index 76e4299dd9b..83c571d8c8a 100644
--- a/arch/sparc/include/asm/tsb.h
+++ b/arch/sparc/include/asm/tsb.h
@@ -50,8 +50,6 @@
#define TSB_TAG_INVALID_BIT 46
#define TSB_TAG_INVALID_HIGH (1 << (TSB_TAG_INVALID_BIT - 32))
-#define TSB_MEMBAR membar #StoreStore
-
/* Some cpus support physical address quad loads. We want to use
* those if possible so we don't need to hard-lock the TSB mapping
* into the TLB. We encode some instruction patching in order to
@@ -128,13 +126,11 @@ extern struct tsb_phys_patch_entry __tsb_phys_patch, __tsb_phys_patch_end;
cmp REG1, REG2; \
bne,pn %icc, 99b; \
nop; \
- TSB_MEMBAR
#define TSB_WRITE(TSB, TTE, TAG) \
add TSB, 0x8, TSB; \
TSB_STORE(TSB, TTE); \
sub TSB, 0x8, TSB; \
- TSB_MEMBAR; \
TSB_STORE(TSB, TAG);
#define KTSB_LOAD_QUAD(TSB, REG) \
@@ -153,13 +149,11 @@ extern struct tsb_phys_patch_entry __tsb_phys_patch, __tsb_phys_patch_end;
cmp REG1, REG2; \
bne,pn %icc, 99b; \
nop; \
- TSB_MEMBAR
#define KTSB_WRITE(TSB, TTE, TAG) \
add TSB, 0x8, TSB; \
stxa TTE, [TSB] ASI_N; \
sub TSB, 0x8, TSB; \
- TSB_MEMBAR; \
stxa TAG, [TSB] ASI_N;
/* Do a kernel page table walk. Leaves physical PTE pointer in
diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index f500b0618bb..c6d06362728 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -163,7 +163,7 @@ static inline long get_delta (long *rt, long *master)
for (i = 0; i < NUM_ITERS; i++) {
t0 = tick_ops->get_tick();
go[MASTER] = 1;
- membar_storeload();
+ membar_safe("#StoreLoad");
while (!(tm = go[SLAVE]))
rmb();
go[SLAVE] = 0;
@@ -257,7 +257,7 @@ static void smp_synchronize_one_tick(int cpu)
/* now let the client proceed into his loop */
go[MASTER] = 0;
- membar_storeload();
+ membar_safe("#StoreLoad");
spin_lock_irqsave(&itc_sync_lock, flags);
{
@@ -267,7 +267,7 @@ static void smp_synchronize_one_tick(int cpu)
go[MASTER] = 0;
wmb();
go[SLAVE] = tick_ops->get_tick();
- membar_storeload();
+ membar_safe("#StoreLoad");
}
}
spin_unlock_irqrestore(&itc_sync_lock, flags);
@@ -1122,7 +1122,6 @@ void smp_capture(void)
smp_processor_id());
#endif
penguins_are_doing_time = 1;
- membar_storestore_loadstore();
atomic_inc(&smp_capture_registry);
smp_cross_call(&xcall_capture, 0, 0, 0);
while (atomic_read(&smp_capture_registry) != ncpus)
@@ -1142,7 +1141,7 @@ void smp_release(void)
smp_processor_id());
#endif
penguins_are_doing_time = 0;
- membar_storeload_storestore();
+ membar_safe("#StoreLoad");
atomic_dec(&smp_capture_registry);
}
}
@@ -1161,7 +1160,7 @@ void smp_penguin_jailcell(int irq, struct pt_regs *regs)
__asm__ __volatile__("flushw");
prom_world(1);
atomic_inc(&smp_capture_registry);
- membar_storeload_storestore();
+ membar_safe("#StoreLoad");
while (penguins_are_doing_time)
rmb();
atomic_dec(&smp_capture_registry);
diff --git a/arch/sparc64/kernel/trampoline.S b/arch/sparc64/kernel/trampoline.S
index 83abd5ae88a..da1b781b5e6 100644
--- a/arch/sparc64/kernel/trampoline.S
+++ b/arch/sparc64/kernel/trampoline.S
@@ -109,7 +109,6 @@ startup_continue:
*/
sethi %hi(prom_entry_lock), %g2
1: ldstub [%g2 + %lo(prom_entry_lock)], %g1
- membar #StoreLoad | #StoreStore
brnz,pn %g1, 1b
nop
@@ -214,7 +213,6 @@ startup_continue:
sethi %hi(prom_entry_lock), %g2
stb %g0, [%g2 + %lo(prom_entry_lock)]
- membar #StoreStore | #StoreLoad
ba,pt %xcc, after_lock_tlb
nop
@@ -330,7 +328,6 @@ after_lock_tlb:
sethi %hi(prom_entry_lock), %g2
1: ldstub [%g2 + %lo(prom_entry_lock)], %g1
- membar #StoreLoad | #StoreStore
brnz,pn %g1, 1b
nop
@@ -394,7 +391,6 @@ after_lock_tlb:
3: sethi %hi(prom_entry_lock), %g2
stb %g0, [%g2 + %lo(prom_entry_lock)]
- membar #StoreStore | #StoreLoad
ldx [%l0], %g6
ldx [%g6 + TI_TASK], %g4
diff --git a/arch/sparc64/kernel/traps.c b/arch/sparc64/kernel/traps.c
index 81ccd22e78d..04994fc8700 100644
--- a/arch/sparc64/kernel/traps.c
+++ b/arch/sparc64/kernel/traps.c
@@ -1371,7 +1371,6 @@ static int cheetah_fix_ce(unsigned long physaddr)
__asm__ __volatile__("ldxa [%0] %3, %%g0\n\t"
"ldxa [%1] %3, %%g0\n\t"
"casxa [%2] %3, %%g0, %%g0\n\t"
- "membar #StoreLoad | #StoreStore\n\t"
"ldxa [%0] %3, %%g0\n\t"
"ldxa [%1] %3, %%g0\n\t"
"membar #Sync"
diff --git a/arch/sparc64/kernel/tsb.S b/arch/sparc64/kernel/tsb.S
index c499214b501..8c91d9b29a2 100644
--- a/arch/sparc64/kernel/tsb.S
+++ b/arch/sparc64/kernel/tsb.S
@@ -317,7 +317,7 @@ tsb_flush:
srlx %g1, 32, %o3
andcc %o3, %g2, %g0
bne,pn %icc, 1b
- membar #LoadLoad
+ nop
cmp %g1, %o1
mov 1, %o3
bne,pt %xcc, 2f
@@ -327,7 +327,7 @@ tsb_flush:
bne,pn %xcc, 1b
nop
2: retl
- TSB_MEMBAR
+ nop
.size tsb_flush, .-tsb_flush
/* Reload MMU related context switch state at
@@ -478,7 +478,7 @@ copy_tsb: /* %o0=old_tsb_base, %o1=old_tsb_size
nop
retl
- TSB_MEMBAR
+ nop
.size copy_tsb, .-copy_tsb
/* Set the invalid bit in all TSB entries. */
diff --git a/arch/sparc64/lib/atomic.S b/arch/sparc64/lib/atomic.S
index 70ac4186f62..0268210ca16 100644
--- a/arch/sparc64/lib/atomic.S
+++ b/arch/sparc64/lib/atomic.S
@@ -43,29 +43,10 @@ atomic_sub: /* %o0 = decrement, %o1 = atomic_ptr */
2: BACKOFF_SPIN(%o2, %o3, 1b)
.size atomic_sub, .-atomic_sub
- /* On SMP we need to use memory barriers to ensure
- * correct memory operation ordering, nop these out
- * for uniprocessor.
- */
-#ifdef CONFIG_SMP
-
-#define ATOMIC_PRE_BARRIER membar #StoreLoad | #LoadLoad;
-#define ATOMIC_POST_BARRIER \
- ba,pt %xcc, 80b; \
- membar #StoreLoad | #StoreStore
-
-80: retl
- nop
-#else
-#define ATOMIC_PRE_BARRIER
-#define ATOMIC_POST_BARRIER
-#endif
-
.globl atomic_add_ret
.type atomic_add_ret,#function
atomic_add_ret: /* %o0 = increment, %o1 = atomic_ptr */
BACKOFF_SETUP(%o2)
- ATOMIC_PRE_BARRIER
1: lduw [%o1], %g1
add %g1, %o0, %g7
cas [%o1], %g1, %g7
@@ -73,7 +54,6 @@ atomic_add_ret: /* %o0 = increment, %o1 = atomic_ptr */
bne,pn %icc, 2f
add %g7, %o0, %g7
sra %g7, 0, %o0
- ATOMIC_POST_BARRIER
retl
nop
2: BACKOFF_SPIN(%o2, %o3, 1b)
@@ -83,7 +63,6 @@ atomic_add_ret: /* %o0 = increment, %o1 = atomic_ptr */
.type atomic_sub_ret,#function
atomic_sub_ret: /* %o0 = decrement, %o1 = atomic_ptr */
BACKOFF_SETUP(%o2)
- ATOMIC_PRE_BARRIER
1: lduw [%o1], %g1
sub %g1, %o0, %g7
cas [%o1], %g1, %g7
@@ -91,7 +70,6 @@ atomic_sub_ret: /* %o0 = decrement, %o1 = atomic_ptr */
bne,pn %icc, 2f
sub %g7, %o0, %g7
sra %g7, 0, %o0
- ATOMIC_POST_BARRIER
retl
nop
2: BACKOFF_SPIN(%o2, %o3, 1b)
@@ -131,7 +109,6 @@ atomic64_sub: /* %o0 = decrement, %o1 = atomic_ptr */
.type atomic64_add_ret,#function
atomic64_add_ret: /* %o0 = increment, %o1 = atomic_ptr */
BACKOFF_SETUP(%o2)
- ATOMIC_PRE_BARRIER
1: ldx [%o1], %g1
add %g1, %o0, %g7
casx [%o1], %g1, %g7
@@ -139,7 +116,6 @@ atomic64_add_ret: /* %o0 = increment, %o1 = atomic_ptr */
bne,pn %xcc, 2f
add %g7, %o0, %g7
mov %g7, %o0
- ATOMIC_POST_BARRIER
retl
nop
2: BACKOFF_SPIN(%o2, %o3, 1b)
@@ -149,7 +125,6 @@ atomic64_add_ret: /* %o0 = increment, %o1 = atomic_ptr */
.type atomic64_sub_ret,#function
atomic64_sub_ret: /* %o0 = decrement, %o1 = atomic_ptr */
BACKOFF_SETUP(%o2)
- ATOMIC_PRE_BARRIER
1: ldx [%o1], %g1
sub %g1, %o0, %g7
casx [%o1], %g1, %g7
@@ -157,7 +132,6 @@ atomic64_sub_ret: /* %o0 = decrement, %o1 = atomic_ptr */
bne,pn %xcc, 2f
sub %g7, %o0, %g7
mov %g7, %o0
- ATOMIC_POST_BARRIER
retl
nop
2: BACKOFF_SPIN(%o2, %o3, 1b)
diff --git a/arch/sparc64/lib/bitops.S b/arch/sparc64/lib/bitops.S
index 6b015a6eefb..2b7228cb8c2 100644
--- a/arch/sparc64/lib/bitops.S
+++ b/arch/sparc64/lib/bitops.S
@@ -8,29 +8,10 @@
.text
- /* On SMP we need to use memory barriers to ensure
- * correct memory operation ordering, nop these out
- * for uniprocessor.
- */
-
-#ifdef CONFIG_SMP
-#define BITOP_PRE_BARRIER membar #StoreLoad | #LoadLoad
-#define BITOP_POST_BARRIER \
- ba,pt %xcc, 80b; \
- membar #StoreLoad | #StoreStore
-
-80: retl
- nop
-#else
-#define BITOP_PRE_BARRIER
-#define BITOP_POST_BARRIER
-#endif
-
.globl test_and_set_bit
.type test_and_set_bit,#function
test_and_set_bit: /* %o0=nr, %o1=addr */
BACKOFF_SETUP(%o3)
- BITOP_PRE_BARRIER
srlx %o0, 6, %g1
mov 1, %o2
sllx %g1, 3, %g3
@@ -45,7 +26,6 @@ test_and_set_bit: /* %o0=nr, %o1=addr */
and %g7, %o2, %g2
clr %o0
movrne %g2, 1, %o0
- BITOP_POST_BARRIER
retl
nop
2: BACKOFF_SPIN(%o3, %o4, 1b)
@@ -55,7 +35,6 @@ test_and_set_bit: /* %o0=nr, %o1=addr */
.type test_and_clear_bit,#function
test_and_clear_bit: /* %o0=nr, %o1=addr */
BACKOFF_SETUP(%o3)
- BITOP_PRE_BARRIER
srlx %o0, 6, %g1
mov 1, %o2
sllx %g1, 3, %g3
@@ -70,7 +49,6 @@ test_and_clear_bit: /* %o0=nr, %o1=addr */
and %g7, %o2, %g2
clr %o0
movrne %g2, 1, %o0
- BITOP_POST_BARRIER
retl
nop
2: BACKOFF_SPIN(%o3, %o4, 1b)
@@ -80,7 +58,6 @@ test_and_clear_bit: /* %o0=nr, %o1=addr */
.type test_and_change_bit,#function
test_and_change_bit: /* %o0=nr, %o1=addr */
BACKOFF_SETUP(%o3)
- BITOP_PRE_BARRIER
srlx %o0, 6, %g1
mov 1, %o2
sllx %g1, 3, %g3
@@ -95,7 +72,6 @@ test_and_change_bit: /* %o0=nr, %o1=addr */
and %g7, %o2, %g2
clr %o0
movrne %g2, 1, %o0
- BITOP_POST_BARRIER
retl
nop
2: BACKOFF_SPIN(%o3, %o4, 1b)
diff --git a/arch/sparc64/lib/rwsem.S b/arch/sparc64/lib/rwsem.S
index 1a4cc5654de..91a7d29a79d 100644
--- a/arch/sparc64/lib/rwsem.S
+++ b/arch/sparc64/lib/rwsem.S
@@ -17,7 +17,6 @@ __down_read:
bne,pn %icc, 1b
add %g7, 1, %g7
cmp %g7, 0
- membar #StoreLoad | #StoreStore
bl,pn %icc, 3f
nop
2:
@@ -42,7 +41,6 @@ __down_read_trylock:
cmp %g1, %g7
bne,pn %icc, 1b
mov 1, %o1
- membar #StoreLoad | #StoreStore
2: retl
mov %o1, %o0
.size __down_read_trylock, .-__down_read_trylock
@@ -58,7 +56,6 @@ __down_write:
cmp %g3, %g7
bne,pn %icc, 1b
cmp %g7, 0
- membar #StoreLoad | #StoreStore
bne,pn %icc, 3f
nop
2: retl
@@ -85,7 +82,6 @@ __down_write_trylock:
cmp %g3, %g7
bne,pn %icc, 1b
mov 1, %o1
- membar #StoreLoad | #StoreStore
2: retl
mov %o1, %o0
.size __down_write_trylock, .-__down_write_trylock
@@ -99,7 +95,6 @@ __up_read:
cmp %g1, %g7
bne,pn %icc, 1b
cmp %g7, 0
- membar #StoreLoad | #StoreStore
bl,pn %icc, 3f
nop
2: retl
@@ -129,7 +124,6 @@ __up_write:
bne,pn %icc, 1b
sub %g7, %g1, %g7
cmp %g7, 0
- membar #StoreLoad | #StoreStore
bl,pn %icc, 3f
nop
2:
@@ -155,7 +149,6 @@ __downgrade_write:
bne,pn %icc, 1b
sub %g7, %g1, %g7
cmp %g7, 0
- membar #StoreLoad | #StoreStore
bl,pn %icc, 3f
nop
2:
diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index 185f3467911..4bd63968400 100644
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -214,7 +214,6 @@ static inline void set_dcache_dirty(struct page *page, int this_cpu)
"or %%g1, %0, %%g1\n\t"
"casx [%2], %%g7, %%g1\n\t"
"cmp %%g7, %%g1\n\t"
- "membar #StoreLoad | #StoreStore\n\t"
"bne,pn %%xcc, 1b\n\t"
" nop"
: /* no outputs */
@@ -236,7 +235,6 @@ static inline void clear_dcache_dirty_cpu(struct page *page, unsigned long cpu)
" andn %%g7, %1, %%g1\n\t"
"casx [%2], %%g7, %%g1\n\t"
"cmp %%g7, %%g1\n\t"
- "membar #StoreLoad | #StoreStore\n\t"
"bne,pn %%xcc, 1b\n\t"
" nop\n"
"2:"
diff --git a/arch/sparc64/mm/tsb.c b/arch/sparc64/mm/tsb.c
index 587f8efb2e0..f0282fad632 100644
--- a/arch/sparc64/mm/tsb.c
+++ b/arch/sparc64/mm/tsb.c
@@ -41,10 +41,8 @@ void flush_tsb_kernel_range(unsigned long start, unsigned long end)
KERNEL_TSB_NENTRIES);
struct tsb *ent = &swapper_tsb[hash];
- if (tag_compare(ent->tag, v)) {
+ if (tag_compare(ent->tag, v))
ent->tag = (1UL << TSB_TAG_INVALID_BIT);
- membar_storeload_storestore();
- }
}
}
diff --git a/arch/sparc64/mm/ultra.S b/arch/sparc64/mm/ultra.S
index 86773e89dc1..e4c146f7c7e 100644
--- a/arch/sparc64/mm/ultra.S
+++ b/arch/sparc64/mm/ultra.S
@@ -125,7 +125,6 @@ __spitfire_flush_tlb_mm_slow:
.align 32
.globl __flush_icache_page
__flush_icache_page: /* %o0 = phys_page */
- membar #StoreStore
srlx %o0, PAGE_SHIFT, %o0
sethi %uhi(PAGE_OFFSET), %g1
sllx %o0, PAGE_SHIFT, %o0
@@ -507,7 +506,6 @@ xcall_fetch_glob_regs:
sllx %g2, TRAP_BLOCK_SZ_SHIFT, %g2
add %g7, %g2, %g7
ldx [%g7 + TRAP_PER_CPU_THREAD], %g3
- membar #StoreStore
stx %g3, [%g1 + GR_SNAP_THREAD]
retry
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-21 03:35:38 +0000