powerpc/64: Implement and use soft_enabled_set_return API
Add a new wrapper function, soft_enabled_set_return(), added to do the paca->soft_enabled updates requiring a set-return. Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>hifive-unleashed-5.1
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e0b5687bed
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a67c543aac
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@ -76,6 +76,20 @@ static inline notrace void soft_enabled_set(unsigned long enable)
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: "memory");
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: "memory");
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}
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}
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static inline notrace unsigned long soft_enabled_set_return(unsigned long enable)
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{
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unsigned long flags;
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asm volatile(
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"lbz %0,%1(13); stb %2,%1(13)"
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: "=&r" (flags)
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: "i" (offsetof(struct paca_struct, soft_enabled)),
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"r" (enable)
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: "memory");
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return flags;
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}
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static inline unsigned long arch_local_save_flags(void)
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static inline unsigned long arch_local_save_flags(void)
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{
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{
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return soft_enabled_return();
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return soft_enabled_return();
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@ -95,16 +109,7 @@ static inline void arch_local_irq_enable(void)
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static inline unsigned long arch_local_irq_save(void)
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static inline unsigned long arch_local_irq_save(void)
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{
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{
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unsigned long flags;
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return soft_enabled_set_return(IRQS_DISABLED);
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asm volatile(
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"lbz %0,%1(13); stb %2,%1(13)"
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: "=&r" (flags)
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: "i" (offsetof(struct paca_struct, soft_enabled)),
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"r" (IRQS_DISABLED)
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: "memory");
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return flags;
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}
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}
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static inline bool arch_irqs_disabled_flags(unsigned long flags)
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static inline bool arch_irqs_disabled_flags(unsigned long flags)
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