aboutsummaryrefslogtreecommitdiff
path: root/arch/alpha/kernel
diff options
context:
space:
mode:
Diffstat (limited to 'arch/alpha/kernel')
-rw-r--r--arch/alpha/kernel/alpha_ksyms.c9
-rw-r--r--arch/alpha/kernel/smp.c172
2 files changed, 0 insertions, 181 deletions
diff --git a/arch/alpha/kernel/alpha_ksyms.c b/arch/alpha/kernel/alpha_ksyms.c
index fc5ef90c4fc..24ae9a36607 100644
--- a/arch/alpha/kernel/alpha_ksyms.c
+++ b/arch/alpha/kernel/alpha_ksyms.c
@@ -185,15 +185,6 @@ EXPORT_SYMBOL(smp_num_cpus);
EXPORT_SYMBOL(smp_call_function);
EXPORT_SYMBOL(smp_call_function_on_cpu);
EXPORT_SYMBOL(_atomic_dec_and_lock);
-#ifdef CONFIG_DEBUG_SPINLOCK
-EXPORT_SYMBOL(_raw_spin_unlock);
-EXPORT_SYMBOL(debug_spin_lock);
-EXPORT_SYMBOL(debug_spin_trylock);
-#endif
-#ifdef CONFIG_DEBUG_RWLOCK
-EXPORT_SYMBOL(_raw_write_lock);
-EXPORT_SYMBOL(_raw_read_lock);
-#endif
EXPORT_SYMBOL(cpu_present_mask);
#endif /* CONFIG_SMP */
diff --git a/arch/alpha/kernel/smp.c b/arch/alpha/kernel/smp.c
index e211aa7404e..da0be346579 100644
--- a/arch/alpha/kernel/smp.c
+++ b/arch/alpha/kernel/smp.c
@@ -989,175 +989,3 @@ flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
preempt_enable();
}
-
-#ifdef CONFIG_DEBUG_SPINLOCK
-void
-_raw_spin_unlock(spinlock_t * lock)
-{
- mb();
- lock->lock = 0;
-
- lock->on_cpu = -1;
- lock->previous = NULL;
- lock->task = NULL;
- lock->base_file = "none";
- lock->line_no = 0;
-}
-
-void
-debug_spin_lock(spinlock_t * lock, const char *base_file, int line_no)
-{
- long tmp;
- long stuck;
- void *inline_pc = __builtin_return_address(0);
- unsigned long started = jiffies;
- int printed = 0;
- int cpu = smp_processor_id();
-
- stuck = 1L << 30;
- try_again:
-
- /* Use sub-sections to put the actual loop at the end
- of this object file's text section so as to perfect
- branch prediction. */
- __asm__ __volatile__(
- "1: ldl_l %0,%1\n"
- " subq %2,1,%2\n"
- " blbs %0,2f\n"
- " or %0,1,%0\n"
- " stl_c %0,%1\n"
- " beq %0,3f\n"
- "4: mb\n"
- ".subsection 2\n"
- "2: ldl %0,%1\n"
- " subq %2,1,%2\n"
- "3: blt %2,4b\n"
- " blbs %0,2b\n"
- " br 1b\n"
- ".previous"
- : "=r" (tmp), "=m" (lock->lock), "=r" (stuck)
- : "m" (lock->lock), "2" (stuck) : "memory");
-
- if (stuck < 0) {
- printk(KERN_WARNING
- "%s:%d spinlock stuck in %s at %p(%d)"
- " owner %s at %p(%d) %s:%d\n",
- base_file, line_no,
- current->comm, inline_pc, cpu,
- lock->task->comm, lock->previous,
- lock->on_cpu, lock->base_file, lock->line_no);
- stuck = 1L << 36;
- printed = 1;
- goto try_again;
- }
-
- /* Exiting. Got the lock. */
- lock->on_cpu = cpu;
- lock->previous = inline_pc;
- lock->task = current;
- lock->base_file = base_file;
- lock->line_no = line_no;
-
- if (printed) {
- printk(KERN_WARNING
- "%s:%d spinlock grabbed in %s at %p(%d) %ld ticks\n",
- base_file, line_no, current->comm, inline_pc,
- cpu, jiffies - started);
- }
-}
-
-int
-debug_spin_trylock(spinlock_t * lock, const char *base_file, int line_no)
-{
- int ret;
- if ((ret = !test_and_set_bit(0, lock))) {
- lock->on_cpu = smp_processor_id();
- lock->previous = __builtin_return_address(0);
- lock->task = current;
- } else {
- lock->base_file = base_file;
- lock->line_no = line_no;
- }
- return ret;
-}
-#endif /* CONFIG_DEBUG_SPINLOCK */
-
-#ifdef CONFIG_DEBUG_RWLOCK
-void _raw_write_lock(rwlock_t * lock)
-{
- long regx, regy;
- int stuck_lock, stuck_reader;
- void *inline_pc = __builtin_return_address(0);
-
- try_again:
-
- stuck_lock = 1<<30;
- stuck_reader = 1<<30;
-
- __asm__ __volatile__(
- "1: ldl_l %1,%0\n"
- " blbs %1,6f\n"
- " blt %1,8f\n"
- " mov 1,%1\n"
- " stl_c %1,%0\n"
- " beq %1,6f\n"
- "4: mb\n"
- ".subsection 2\n"
- "6: blt %3,4b # debug\n"
- " subl %3,1,%3 # debug\n"
- " ldl %1,%0\n"
- " blbs %1,6b\n"
- "8: blt %4,4b # debug\n"
- " subl %4,1,%4 # debug\n"
- " ldl %1,%0\n"
- " blt %1,8b\n"
- " br 1b\n"
- ".previous"
- : "=m" (*(volatile int *)lock), "=&r" (regx), "=&r" (regy),
- "=&r" (stuck_lock), "=&r" (stuck_reader)
- : "m" (*(volatile int *)lock), "3" (stuck_lock), "4" (stuck_reader) : "memory");
-
- if (stuck_lock < 0) {
- printk(KERN_WARNING "write_lock stuck at %p\n", inline_pc);
- goto try_again;
- }
- if (stuck_reader < 0) {
- printk(KERN_WARNING "write_lock stuck on readers at %p\n",
- inline_pc);
- goto try_again;
- }
-}
-
-void _raw_read_lock(rwlock_t * lock)
-{
- long regx;
- int stuck_lock;
- void *inline_pc = __builtin_return_address(0);
-
- try_again:
-
- stuck_lock = 1<<30;
-
- __asm__ __volatile__(
- "1: ldl_l %1,%0;"
- " blbs %1,6f;"
- " subl %1,2,%1;"
- " stl_c %1,%0;"
- " beq %1,6f;"
- "4: mb\n"
- ".subsection 2\n"
- "6: ldl %1,%0;"
- " blt %2,4b # debug\n"
- " subl %2,1,%2 # debug\n"
- " blbs %1,6b;"
- " br 1b\n"
- ".previous"
- : "=m" (*(volatile int *)lock), "=&r" (regx), "=&r" (stuck_lock)
- : "m" (*(volatile int *)lock), "2" (stuck_lock) : "memory");
-
- if (stuck_lock < 0) {
- printk(KERN_WARNING "read_lock stuck at %p\n", inline_pc);
- goto try_again;
- }
-}
-#endif /* CONFIG_DEBUG_RWLOCK */