locking/lglock: Remove lglock implementation

It is now unused, remove it before someone else thinks its a good idea
to use this.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 0 insertions, 89 deletions

diff --git a/kernel/locking/lglock.c b/kernel/locking/lglock.c
deleted file mode 100644
index 86ae2aebf004..000000000000
--- a/kernel/locking/lglock.c
+++ /dev/null
@@ -1,89 +0,0 @@
-/* See include/linux/lglock.h for description */
-#include <linux/module.h>
-#include <linux/lglock.h>
-#include <linux/cpu.h>
-#include <linux/string.h>
-
-/*
- * Note there is no uninit, so lglocks cannot be defined in
- * modules (but it's fine to use them from there)
- * Could be added though, just undo lg_lock_init
- */
-
-void lg_lock_init(struct lglock *lg, char *name)
-{
-        LOCKDEP_INIT_MAP(&lg->lock_dep_map, name, &lg->lock_key, 0);
-}
-EXPORT_SYMBOL(lg_lock_init);
-
-void lg_local_lock(struct lglock *lg)
-{
-        arch_spinlock_t *lock;
-
-        preempt_disable();
-        lock_acquire_shared(&lg->lock_dep_map, 0, 0, NULL, _RET_IP_);
-        lock = this_cpu_ptr(lg->lock);
-        arch_spin_lock(lock);
-}
-EXPORT_SYMBOL(lg_local_lock);
-
-void lg_local_unlock(struct lglock *lg)
-{
-        arch_spinlock_t *lock;
-
-        lock_release(&lg->lock_dep_map, 1, _RET_IP_);
-        lock = this_cpu_ptr(lg->lock);
-        arch_spin_unlock(lock);
-        preempt_enable();
-}
-EXPORT_SYMBOL(lg_local_unlock);
-
-void lg_local_lock_cpu(struct lglock *lg, int cpu)
-{
-        arch_spinlock_t *lock;
-
-        preempt_disable();
-        lock_acquire_shared(&lg->lock_dep_map, 0, 0, NULL, _RET_IP_);
-        lock = per_cpu_ptr(lg->lock, cpu);
-        arch_spin_lock(lock);
-}
-EXPORT_SYMBOL(lg_local_lock_cpu);
-
-void lg_local_unlock_cpu(struct lglock *lg, int cpu)
-{
-        arch_spinlock_t *lock;
-
-        lock_release(&lg->lock_dep_map, 1, _RET_IP_);
-        lock = per_cpu_ptr(lg->lock, cpu);
-        arch_spin_unlock(lock);
-        preempt_enable();
-}
-EXPORT_SYMBOL(lg_local_unlock_cpu);
-
-void lg_global_lock(struct lglock *lg)
-{
-        int i;
-
-        preempt_disable();
-        lock_acquire_exclusive(&lg->lock_dep_map, 0, 0, NULL, _RET_IP_);
-        for_each_possible_cpu(i) {
-                arch_spinlock_t *lock;
-                lock = per_cpu_ptr(lg->lock, i);
-                arch_spin_lock(lock);
-        }
-}
-EXPORT_SYMBOL(lg_global_lock);
-
-void lg_global_unlock(struct lglock *lg)
-{
-        int i;
-
-        lock_release(&lg->lock_dep_map, 1, _RET_IP_);
-        for_each_possible_cpu(i) {
-                arch_spinlock_t *lock;
-                lock = per_cpu_ptr(lg->lock, i);
-                arch_spin_unlock(lock);
-        }
-        preempt_enable();
-}
-EXPORT_SYMBOL(lg_global_unlock);