aboutsummaryrefslogtreecommitdiff
path: root/arch/sparc
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sparc')
-rw-r--r--arch/sparc/kernel/sparc_ksyms.c10
-rw-r--r--arch/sparc/lib/Makefile2
-rw-r--r--arch/sparc/lib/debuglocks.c202
3 files changed, 0 insertions, 214 deletions
diff --git a/arch/sparc/kernel/sparc_ksyms.c b/arch/sparc/kernel/sparc_ksyms.c
index 5d974a2b735..f8480933362 100644
--- a/arch/sparc/kernel/sparc_ksyms.c
+++ b/arch/sparc/kernel/sparc_ksyms.c
@@ -114,17 +114,7 @@ DOT_ALIAS2(unsigned, urem, unsigned, unsigned)
/* used by various drivers */
EXPORT_SYMBOL(sparc_cpu_model);
EXPORT_SYMBOL(kernel_thread);
-#ifdef CONFIG_DEBUG_SPINLOCK
#ifdef CONFIG_SMP
-EXPORT_SYMBOL(_do_spin_lock);
-EXPORT_SYMBOL(_do_spin_unlock);
-EXPORT_SYMBOL(_spin_trylock);
-EXPORT_SYMBOL(_do_read_lock);
-EXPORT_SYMBOL(_do_read_unlock);
-EXPORT_SYMBOL(_do_write_lock);
-EXPORT_SYMBOL(_do_write_unlock);
-#endif
-#else
// XXX find what uses (or used) these.
EXPORT_SYMBOL(___rw_read_enter);
EXPORT_SYMBOL(___rw_read_exit);
diff --git a/arch/sparc/lib/Makefile b/arch/sparc/lib/Makefile
index 2296ff9dc47..fa500694606 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/debuglocks.c b/arch/sparc/lib/debuglocks.c
deleted file mode 100644
index fb182352782..00000000000
--- 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 */