Merge branch 'linus' into x86/header-guards

[mv-sheeva.git] / include / asm-x86 / paravirt.h

diff --git a/include/asm-x86/paravirt.h b/include/asm-x86/paravirt.h
index eef8095a09dcca01b0cb7ad4aa4c76ef52fe10f9..2e6821a0b6e78b0f6d03ecce89dd58377364e3b4 100644 (file)
--- a/include/asm-x86/paravirt.h
+++ b/include/asm-x86/paravirt.h
@@ -1,5 +1,5 @@
-#ifndef __ASM_PARAVIRT_H
-#define __ASM_PARAVIRT_H
+#ifndef ASM_X86__PARAVIRT_H
+#define ASM_X86__PARAVIRT_H
 /* Various instructions on x86 need to be replaced for
  * para-virtualization: those hooks are defined here. */
 
@@ -205,7 +205,6 @@ struct pv_apic_ops {
         * these shouldn't be in this interface.
         */
        void (*apic_write)(unsigned long reg, u32 v);
-       void (*apic_write_atomic)(unsigned long reg, u32 v);
        u32 (*apic_read)(unsigned long reg);
        void (*setup_boot_clock)(void);
        void (*setup_secondary_clock)(void);
@@ -326,6 +325,15 @@ struct pv_mmu_ops {
                           unsigned long phys, pgprot_t flags);
 };
 
+struct raw_spinlock;
+struct pv_lock_ops {
+       int (*spin_is_locked)(struct raw_spinlock *lock);
+       int (*spin_is_contended)(struct raw_spinlock *lock);
+       void (*spin_lock)(struct raw_spinlock *lock);
+       int (*spin_trylock)(struct raw_spinlock *lock);
+       void (*spin_unlock)(struct raw_spinlock *lock);
+};
+
 /* This contains all the paravirt structures: we get a convenient
  * number for each function using the offset which we use to indicate
  * what to patch. */
@@ -336,6 +344,7 @@ struct paravirt_patch_template {
        struct pv_irq_ops pv_irq_ops;
        struct pv_apic_ops pv_apic_ops;
        struct pv_mmu_ops pv_mmu_ops;
+       struct pv_lock_ops pv_lock_ops;
 };
 
 extern struct pv_info pv_info;
@@ -345,6 +354,7 @@ extern struct pv_cpu_ops pv_cpu_ops;
 extern struct pv_irq_ops pv_irq_ops;
 extern struct pv_apic_ops pv_apic_ops;
 extern struct pv_mmu_ops pv_mmu_ops;
+extern struct pv_lock_ops pv_lock_ops;
 
 #define PARAVIRT_PATCH(x)                                      \
        (offsetof(struct paravirt_patch_template, x) / sizeof(void *))
@@ -896,11 +906,6 @@ static inline void apic_write(unsigned long reg, u32 v)
        PVOP_VCALL2(pv_apic_ops.apic_write, reg, v);
 }
 
-static inline void apic_write_atomic(unsigned long reg, u32 v)
-{
-       PVOP_VCALL2(pv_apic_ops.apic_write_atomic, reg, v);
-}
-
 static inline u32 apic_read(unsigned long reg)
 {
        return PVOP_CALL1(unsigned long, pv_apic_ops.apic_read, reg);
@@ -1083,6 +1088,9 @@ static inline pteval_t pte_flags(pte_t pte)
                ret = PVOP_CALL1(pteval_t, pv_mmu_ops.pte_flags,
                                 pte.pte);
 
+#ifdef CONFIG_PARAVIRT_DEBUG
+       BUG_ON(ret & PTE_PFN_MASK);
+#endif
        return ret;
 }
 
@@ -1374,6 +1382,37 @@ static inline void __set_fixmap(unsigned /* enum fixed_addresses */ idx,
 void _paravirt_nop(void);
 #define paravirt_nop   ((void *)_paravirt_nop)
 
+void paravirt_use_bytelocks(void);
+
+#ifdef CONFIG_SMP
+
+static inline int __raw_spin_is_locked(struct raw_spinlock *lock)
+{
+       return PVOP_CALL1(int, pv_lock_ops.spin_is_locked, lock);
+}
+
+static inline int __raw_spin_is_contended(struct raw_spinlock *lock)
+{
+       return PVOP_CALL1(int, pv_lock_ops.spin_is_contended, lock);
+}
+
+static __always_inline void __raw_spin_lock(struct raw_spinlock *lock)
+{
+       PVOP_VCALL1(pv_lock_ops.spin_lock, lock);
+}
+
+static __always_inline int __raw_spin_trylock(struct raw_spinlock *lock)
+{
+       return PVOP_CALL1(int, pv_lock_ops.spin_trylock, lock);
+}
+
+static __always_inline void __raw_spin_unlock(struct raw_spinlock *lock)
+{
+       PVOP_VCALL1(pv_lock_ops.spin_unlock, lock);
+}
+
+#endif
+
 /* These all sit in the .parainstructions section to tell us what to patch. */
 struct paravirt_patch_site {
        u8 *instr;              /* original instructions */
@@ -1458,6 +1497,7 @@ static inline unsigned long __raw_local_irq_save(void)
        return f;
 }
 
+
 /* Make sure as little as possible of this mess escapes. */
 #undef PARAVIRT_CALL
 #undef __PVOP_CALL
@@ -1594,4 +1634,4 @@ static inline unsigned long __raw_local_irq_save(void)
 
 #endif /* __ASSEMBLY__ */
 #endif /* CONFIG_PARAVIRT */
-#endif /* __ASM_PARAVIRT_H */
+#endif /* ASM_X86__PARAVIRT_H */