mirror of
https://github.com/torvalds/linux.git
synced 2024-11-08 05:01:48 +00:00
afb33f8c0d
Impact: cleanup
Remove byte locks implementation, which was introduced by Jeremy in
8efcbab6 ("paravirt: introduce a "lock-byte" spinlock implementation"),
but turned out to be dead code that is not used by any in-kernel
virtualization guest (Xen uses its own variant of spinlocks implementation
and KVM is not planning to move to byte locks).
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
29 lines
657 B
C
29 lines
657 B
C
/*
|
|
* Split spinlock implementation out into its own file, so it can be
|
|
* compiled in a FTRACE-compatible way.
|
|
*/
|
|
#include <linux/spinlock.h>
|
|
#include <linux/module.h>
|
|
|
|
#include <asm/paravirt.h>
|
|
|
|
static inline void
|
|
default_spin_lock_flags(raw_spinlock_t *lock, unsigned long flags)
|
|
{
|
|
__raw_spin_lock(lock);
|
|
}
|
|
|
|
struct pv_lock_ops pv_lock_ops = {
|
|
#ifdef CONFIG_SMP
|
|
.spin_is_locked = __ticket_spin_is_locked,
|
|
.spin_is_contended = __ticket_spin_is_contended,
|
|
|
|
.spin_lock = __ticket_spin_lock,
|
|
.spin_lock_flags = default_spin_lock_flags,
|
|
.spin_trylock = __ticket_spin_trylock,
|
|
.spin_unlock = __ticket_spin_unlock,
|
|
#endif
|
|
};
|
|
EXPORT_SYMBOL(pv_lock_ops);
|
|
|