d5de884135
ftrace requires certain low-level code, like spinlocks and timestamps, to be compiled without -pg in order to avoid infinite recursion. This patch splits out the core paravirt spinlocks and the Xen spinlocks into separate files which can be compiled without -pg. Also do xen/time.c while we're about it. As a result, we can now use ftrace within a Xen domain. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
32 lines
822 B
C
32 lines
822 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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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_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_GPL(pv_lock_ops);
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void __init paravirt_use_bytelocks(void)
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{
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#ifdef CONFIG_SMP
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pv_lock_ops.spin_is_locked = __byte_spin_is_locked;
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pv_lock_ops.spin_is_contended = __byte_spin_is_contended;
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pv_lock_ops.spin_lock = __byte_spin_lock;
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pv_lock_ops.spin_trylock = __byte_spin_trylock;
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pv_lock_ops.spin_unlock = __byte_spin_unlock;
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#endif
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}
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