diff options
Diffstat (limited to 'arch/sparc/lib')
| -rw-r--r-- | arch/sparc/lib/Makefile | 2 | ||||
| -rw-r--r-- | arch/sparc/lib/atomic32.c | 2 | ||||
| -rw-r--r-- | arch/sparc/lib/debuglocks.c | 202 | ||||
| -rw-r--r-- | arch/sparc/lib/mul.S | 2 | ||||
| -rw-r--r-- | arch/sparc/lib/rem.S | 2 | ||||
| -rw-r--r-- | arch/sparc/lib/sdiv.S | 2 | ||||
| -rw-r--r-- | arch/sparc/lib/udiv.S | 2 | ||||
| -rw-r--r-- | arch/sparc/lib/umul.S | 2 | ||||
| -rw-r--r-- | arch/sparc/lib/urem.S | 2 |
9 files changed, 13 insertions, 205 deletions
diff --git a/arch/sparc/lib/Makefile b/arch/sparc/lib/Makefile index 2296ff9dc47a..fa5006946062 100644 --- a/arch/sparc/lib/Makefile +++ b/arch/sparc/lib/Makefile @@ -9,5 +9,3 @@ lib-y := mul.o rem.o sdiv.o udiv.o umul.o urem.o ashrdi3.o memcpy.o memset.o \ strncpy_from_user.o divdi3.o udivdi3.o strlen_user.o \ copy_user.o locks.o atomic.o atomic32.o bitops.o \ lshrdi3.o ashldi3.o rwsem.o muldi3.o bitext.o - -lib-$(CONFIG_DEBUG_SPINLOCK) += debuglocks.o diff --git a/arch/sparc/lib/atomic32.c b/arch/sparc/lib/atomic32.c index 19724c5800a7..2e64e8c3e8e5 100644 --- a/arch/sparc/lib/atomic32.c +++ b/arch/sparc/lib/atomic32.c @@ -20,7 +20,7 @@ spinlock_t __atomic_hash[ATOMIC_HASH_SIZE] = { #else /* SMP */ -static spinlock_t dummy = SPIN_LOCK_UNLOCKED; +static DEFINE_SPINLOCK(dummy); #define ATOMIC_HASH_SIZE 1 #define ATOMIC_HASH(a) (&dummy) diff --git a/arch/sparc/lib/debuglocks.c b/arch/sparc/lib/debuglocks.c deleted file mode 100644 index fb182352782c..000000000000 --- a/arch/sparc/lib/debuglocks.c +++ /dev/null @@ -1,202 +0,0 @@ -/* $Id: debuglocks.c,v 1.11 2001/09/20 00:35:31 davem Exp $ - * debuglocks.c: Debugging versions of SMP locking primitives. - * - * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu) - * Copyright (C) 1998-99 Anton Blanchard (anton@progsoc.uts.edu.au) - */ - -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/threads.h> /* For NR_CPUS */ -#include <linux/spinlock.h> -#include <asm/psr.h> -#include <asm/system.h> - -#ifdef CONFIG_SMP - -/* Some notes on how these debugging routines work. When a lock is acquired - * an extra debugging member lock->owner_pc is set to the caller of the lock - * acquisition routine. Right before releasing a lock, the debugging program - * counter is cleared to zero. - * - * Furthermore, since PC's are 4 byte aligned on Sparc, we stuff the CPU - * number of the owner in the lowest two bits. - */ - -#define STORE_CALLER(A) __asm__ __volatile__("mov %%i7, %0" : "=r" (A)); - -static inline void show(char *str, spinlock_t *lock, unsigned long caller) -{ - int cpu = smp_processor_id(); - - printk("%s(%p) CPU#%d stuck at %08lx, owner PC(%08lx):CPU(%lx)\n",str, - lock, cpu, caller, lock->owner_pc & ~3, lock->owner_pc & 3); -} - -static inline void show_read(char *str, rwlock_t *lock, unsigned long caller) -{ - int cpu = smp_processor_id(); - - printk("%s(%p) CPU#%d stuck at %08lx, owner PC(%08lx):CPU(%lx)\n", str, - lock, cpu, caller, lock->owner_pc & ~3, lock->owner_pc & 3); -} - -static inline void show_write(char *str, rwlock_t *lock, unsigned long caller) -{ - int cpu = smp_processor_id(); - int i; - - printk("%s(%p) CPU#%d stuck at %08lx, owner PC(%08lx):CPU(%lx)", str, - lock, cpu, caller, lock->owner_pc & ~3, lock->owner_pc & 3); - - for(i = 0; i < NR_CPUS; i++) - printk(" reader[%d]=%08lx", i, lock->reader_pc[i]); - - printk("\n"); -} - -#undef INIT_STUCK -#define INIT_STUCK 100000000 - -void _do_spin_lock(spinlock_t *lock, char *str) -{ - unsigned long caller; - unsigned long val; - int cpu = smp_processor_id(); - int stuck = INIT_STUCK; - - STORE_CALLER(caller); - -again: - __asm__ __volatile__("ldstub [%1], %0" : "=r" (val) : "r" (&(lock->lock))); - if(val) { - while(lock->lock) { - if (!--stuck) { - show(str, lock, caller); - stuck = INIT_STUCK; - } - barrier(); - } - goto again; - } - lock->owner_pc = (cpu & 3) | (caller & ~3); -} - -int _spin_trylock(spinlock_t *lock) -{ - unsigned long val; - unsigned long caller; - int cpu = smp_processor_id(); - - STORE_CALLER(caller); - - __asm__ __volatile__("ldstub [%1], %0" : "=r" (val) : "r" (&(lock->lock))); - if(!val) { - /* We got it, record our identity for debugging. */ - lock->owner_pc = (cpu & 3) | (caller & ~3); - } - return val == 0; -} - -void _do_spin_unlock(spinlock_t *lock) -{ - lock->owner_pc = 0; - barrier(); - lock->lock = 0; -} - -void _do_read_lock(rwlock_t *rw, char *str) -{ - unsigned long caller; - unsigned long val; - int cpu = smp_processor_id(); - int stuck = INIT_STUCK; - - STORE_CALLER(caller); - -wlock_again: - __asm__ __volatile__("ldstub [%1 + 3], %0" : "=r" (val) : "r" (&(rw->lock))); - if(val) { - while(rw->lock & 0xff) { - if (!--stuck) { - show_read(str, rw, caller); - stuck = INIT_STUCK; - } - barrier(); - } - goto wlock_again; - } - - rw->reader_pc[cpu] = caller; - barrier(); - rw->lock++; -} - -void _do_read_unlock(rwlock_t *rw, char *str) -{ - unsigned long caller; - unsigned long val; - int cpu = smp_processor_id(); - int stuck = INIT_STUCK; - - STORE_CALLER(caller); - -wlock_again: - __asm__ __volatile__("ldstub [%1 + 3], %0" : "=r" (val) : "r" (&(rw->lock))); - if(val) { - while(rw->lock & 0xff) { - if (!--stuck) { - show_read(str, rw, caller); - stuck = INIT_STUCK; - } - barrier(); - } - goto wlock_again; - } - - rw->reader_pc[cpu] = 0; - barrier(); - rw->lock -= 0x1ff; -} - -void _do_write_lock(rwlock_t *rw, char *str) -{ - unsigned long caller; - unsigned long val; - int cpu = smp_processor_id(); - int stuck = INIT_STUCK; - - STORE_CALLER(caller); - -wlock_again: - __asm__ __volatile__("ldstub [%1 + 3], %0" : "=r" (val) : "r" (&(rw->lock))); - if(val) { -wlock_wait: - while(rw->lock) { - if (!--stuck) { - show_write(str, rw, caller); - stuck = INIT_STUCK; - } - barrier(); - } - goto wlock_again; - } - - if (rw->lock & ~0xff) { - *(((unsigned char *)&rw->lock)+3) = 0; - barrier(); - goto wlock_wait; - } - - barrier(); - rw->owner_pc = (cpu & 3) | (caller & ~3); -} - -void _do_write_unlock(rwlock_t *rw) -{ - rw->owner_pc = 0; - barrier(); - rw->lock = 0; -} - -#endif /* SMP */ diff --git a/arch/sparc/lib/mul.S b/arch/sparc/lib/mul.S index 83dffbc2f62f..da693560d878 100644 --- a/arch/sparc/lib/mul.S +++ b/arch/sparc/lib/mul.S @@ -16,7 +16,9 @@ */ .globl .mul + .globl _Mul .mul: +_Mul: /* needed for export */ mov %o0, %y ! multiplier -> Y andncc %o0, 0xfff, %g0 ! test bits 12..31 be Lmul_shortway ! if zero, can do it the short way diff --git a/arch/sparc/lib/rem.S b/arch/sparc/lib/rem.S index 44508148d055..bf015a90d07e 100644 --- a/arch/sparc/lib/rem.S +++ b/arch/sparc/lib/rem.S @@ -43,7 +43,9 @@ .globl .rem + .globl _Rem .rem: +_Rem: /* needed for export */ ! compute sign of result; if neither is negative, no problem orcc %o1, %o0, %g0 ! either negative? bge 2f ! no, go do the divide diff --git a/arch/sparc/lib/sdiv.S b/arch/sparc/lib/sdiv.S index e0ad80b6f63d..af9451629d0b 100644 --- a/arch/sparc/lib/sdiv.S +++ b/arch/sparc/lib/sdiv.S @@ -43,7 +43,9 @@ .globl .div + .globl _Div .div: +_Div: /* needed for export */ ! compute sign of result; if neither is negative, no problem orcc %o1, %o0, %g0 ! either negative? bge 2f ! no, go do the divide diff --git a/arch/sparc/lib/udiv.S b/arch/sparc/lib/udiv.S index 2abfc6b0f3e9..169e01da6715 100644 --- a/arch/sparc/lib/udiv.S +++ b/arch/sparc/lib/udiv.S @@ -43,7 +43,9 @@ .globl .udiv + .globl _Udiv .udiv: +_Udiv: /* needed for export */ ! Ready to divide. Compute size of quotient; scale comparand. orcc %o1, %g0, %o5 diff --git a/arch/sparc/lib/umul.S b/arch/sparc/lib/umul.S index a784720a8a22..f0e5b20a2536 100644 --- a/arch/sparc/lib/umul.S +++ b/arch/sparc/lib/umul.S @@ -21,7 +21,9 @@ */ .globl .umul + .globl _Umul .umul: +_Umul: /* needed for export */ or %o0, %o1, %o4 mov %o0, %y ! multiplier -> Y diff --git a/arch/sparc/lib/urem.S b/arch/sparc/lib/urem.S index ec7f0c502c56..6b92bdc8b04c 100644 --- a/arch/sparc/lib/urem.S +++ b/arch/sparc/lib/urem.S @@ -41,7 +41,9 @@ */ .globl .urem + .globl _Urem .urem: +_Urem: /* needed for export */ ! Ready to divide. Compute size of quotient; scale comparand. orcc %o1, %g0, %o5 |
