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[MIPS] Terminally fix local_{dec,sub}_if_positive

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They contain 64-bit instructions so wouldn't work on 32-bit kernels or
32-bit hardware.  Since there are no users, blow them away.  They
probably were only ever created because there are atomic_sub_if_positive
and atomic_dec_if_positive which exist only for sake of semaphores.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2007-10-03 14:29:19 +01:00
parent fef74705ea
commit 9ea0f043fe
1 changed files with 0 additions and 68 deletions
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68
include/asm-mips/local.h
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@ -115,68 +115,6 @@ static __inline__ long local_sub_return(long i, local_t * l)
return result;
}
/*
* local_sub_if_positive - conditionally subtract integer from atomic variable
* @i: integer value to subtract
* @l: pointer of type local_t
*
* Atomically test @l and subtract @i if @l is greater or equal than @i.
* The function returns the old value of @l minus @i.
*/
static __inline__ long local_sub_if_positive(long i, local_t * l)
{
unsigned long result;
if (cpu_has_llsc && R10000_LLSC_WAR) {
unsigned long temp;
__asm__ __volatile__(
" .set mips3 \n"
"1:" __LL "%1, %2 # local_sub_if_positive\n"
" dsubu %0, %1, %3 \n"
" bltz %0, 1f \n"
__SC "%0, %2 \n"
" .set noreorder \n"
" beqzl %0, 1b \n"
" dsubu %0, %1, %3 \n"
" .set reorder \n"
"1: \n"
" .set mips0 \n"
: "=&r" (result), "=&r" (temp), "=m" (l->a.counter)
: "Ir" (i), "m" (l->a.counter)
: "memory");
} else if (cpu_has_llsc) {
unsigned long temp;
__asm__ __volatile__(
" .set mips3 \n"
"1:" __LL "%1, %2 # local_sub_if_positive\n"
" dsubu %0, %1, %3 \n"
" bltz %0, 1f \n"
__SC "%0, %2 \n"
" .set noreorder \n"
" beqz %0, 1b \n"
" dsubu %0, %1, %3 \n"
" .set reorder \n"
"1: \n"
" .set mips0 \n"
: "=&r" (result), "=&r" (temp), "=m" (l->a.counter)
: "Ir" (i), "m" (l->a.counter)
: "memory");
} else {
unsigned long flags;
local_irq_save(flags);
result = l->a.counter;
result -= i;
if (result >= 0)
l->a.counter = result;
local_irq_restore(flags);
}
return result;
}
#define local_cmpxchg(l, o, n) \
((long)cmpxchg_local(&((l)->a.counter), (o), (n)))
#define local_xchg(l, n) (xchg_local(&((l)->a.counter),(n)))
@ -234,12 +172,6 @@ static __inline__ long local_sub_if_positive(long i, local_t * l)
*/
#define local_dec_and_test(l) (local_sub_return(1, (l)) == 0)
/*
* local_dec_if_positive - decrement by 1 if old value positive
* @l: pointer of type local_t
*/
#define local_dec_if_positive(l) local_sub_if_positive(1, l)
/*
* local_add_negative - add and test if negative
* @l: pointer of type local_t