1 files changed, 0 insertions, 72 deletions
diff --git a/qemu/include/qemu/seqlock.h b/qemu/include/qemu/seqlock.h
deleted file mode 100644
index 70b01fd60..000000000
--- a/qemu/include/qemu/seqlock.h
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- * Seqlock implementation for QEMU
- *
- * Copyright Red Hat, Inc. 2013
- *
- * Author:
- *  Paolo Bonzini <pbonzini@redhat.com>
- *
- * This work is licensed under the terms of the GNU GPL, version 2 or later.
- * See the COPYING file in the top-level directory.
- *
- */
-#ifndef QEMU_SEQLOCK_H
-#define QEMU_SEQLOCK_H 1
-
-#include <qemu/atomic.h>
-#include <qemu/thread.h>
-
-typedef struct QemuSeqLock QemuSeqLock;
-
-struct QemuSeqLock {
-    QemuMutex *mutex;
-    unsigned sequence;
-};
-
-static inline void seqlock_init(QemuSeqLock *sl, QemuMutex *mutex)
-{
-    sl->mutex = mutex;
-    sl->sequence = 0;
-}
-
-/* Lock out other writers and update the count.  */
-static inline void seqlock_write_lock(QemuSeqLock *sl)
-{
-    if (sl->mutex) {
-        qemu_mutex_lock(sl->mutex);
-    }
-    ++sl->sequence;
-
-    /* Write sequence before updating other fields.  */
-    smp_wmb();
-}
-
-static inline void seqlock_write_unlock(QemuSeqLock *sl)
-{
-    /* Write other fields before finalizing sequence.  */
-    smp_wmb();
-
-    ++sl->sequence;
-    if (sl->mutex) {
-        qemu_mutex_unlock(sl->mutex);
-    }
-}
-
-static inline unsigned seqlock_read_begin(QemuSeqLock *sl)
-{
-    /* Always fail if a write is in progress.  */
-    unsigned ret = atomic_read(&sl->sequence);
-
-    /* Read sequence before reading other fields.  */
-    smp_rmb();
-    return ret & ~1;
-}
-
-static inline int seqlock_read_retry(const QemuSeqLock *sl, unsigned start)
-{
-    /* Read other fields before reading final sequence.  */
-    smp_rmb();
-    return unlikely(atomic_read(&sl->sequence) != start);
-}
-
-#endif