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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
/*
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* Split spinlock implementation out into its own file, so it can be
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* compiled in a FTRACE-compatible way.
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*/
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#include <linux/spinlock.h>
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#include <linux/module.h>
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#include <asm/paravirt.h>
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static inline void
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default_spin_lock_flags(raw_spinlock_t *lock, unsigned long flags)
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{
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__raw_spin_lock(lock);
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}
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struct pv_lock_ops pv_lock_ops = {
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#ifdef CONFIG_SMP
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.spin_is_locked = __ticket_spin_is_locked,
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.spin_is_contended = __ticket_spin_is_contended,
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.spin_lock = __ticket_spin_lock,
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.spin_lock_flags = default_spin_lock_flags,
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.spin_trylock = __ticket_spin_trylock,
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.spin_unlock = __ticket_spin_unlock,
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#endif
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};
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EXPORT_SYMBOL(pv_lock_ops);
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