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42 lines
1.1 KiB
42 lines
1.1 KiB
/* |
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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 <linux/jump_label.h> |
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#include <asm/paravirt.h> |
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#ifdef CONFIG_QUEUED_SPINLOCKS |
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__visible void __native_queued_spin_unlock(struct qspinlock *lock) |
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{ |
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native_queued_spin_unlock(lock); |
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} |
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PV_CALLEE_SAVE_REGS_THUNK(__native_queued_spin_unlock); |
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bool pv_is_native_spin_unlock(void) |
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{ |
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return pv_lock_ops.queued_spin_unlock.func == |
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__raw_callee_save___native_queued_spin_unlock; |
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} |
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#endif |
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struct pv_lock_ops pv_lock_ops = { |
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#ifdef CONFIG_SMP |
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#ifdef CONFIG_QUEUED_SPINLOCKS |
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.queued_spin_lock_slowpath = native_queued_spin_lock_slowpath, |
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.queued_spin_unlock = PV_CALLEE_SAVE(__native_queued_spin_unlock), |
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.wait = paravirt_nop, |
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.kick = paravirt_nop, |
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#else /* !CONFIG_QUEUED_SPINLOCKS */ |
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.lock_spinning = __PV_IS_CALLEE_SAVE(paravirt_nop), |
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.unlock_kick = paravirt_nop, |
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#endif /* !CONFIG_QUEUED_SPINLOCKS */ |
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#endif /* SMP */ |
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}; |
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EXPORT_SYMBOL(pv_lock_ops); |
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struct static_key paravirt_ticketlocks_enabled = STATIC_KEY_INIT_FALSE; |
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EXPORT_SYMBOL(paravirt_ticketlocks_enabled);
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