Rework mutex implementation selection

1 files changed, 0 insertions, 71 deletions

diff --git a/kern/mutex.c b/kern/mutex.c
deleted file mode 100644
index 7899bef9..00000000
--- a/kern/mutex.c
+++ /dev/null
@@ -1,71 +0,0 @@
-/*
- * Copyright (c) 2013-2017 Richard Braun.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef X15_MUTEX_PI
-
-#include <stdbool.h>
-#include <stddef.h>
-
-#include <kern/mutex.h>
-#include <kern/mutex_i.h>
-#include <kern/sleepq.h>
-
-void
-mutex_lock_slow(struct mutex *mutex)
-{
-    struct sleepq *sleepq;
-    unsigned long flags;
-    unsigned int state;
-
-    sleepq = sleepq_lend(mutex, false, &flags);
-
-    for (;;) {
-        state = atomic_swap_acquire(&mutex->state, MUTEX_CONTENDED);
-
-        if (state == MUTEX_UNLOCKED) {
-            break;
-        }
-
-        sleepq_wait(sleepq, "mutex");
-    }
-
-    if (sleepq_empty(sleepq)) {
-        state = atomic_swap_acquire(&mutex->state, MUTEX_LOCKED);
-        assert(state == MUTEX_CONTENDED);
-    }
-
-    sleepq_return(sleepq, flags);
-}
-
-void
-mutex_unlock_slow(struct mutex *mutex)
-{
-    struct sleepq *sleepq;
-    unsigned long flags;
-
-    sleepq = sleepq_acquire(mutex, false, &flags);
-
-    if (sleepq == NULL) {
-        return;
-    }
-
-    sleepq_signal(sleepq);
-
-    sleepq_release(sleepq, flags);
-}
-
-#endif /* X15_MUTEX_PI */