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powerpc/64: Rename soft_enabled to irq_soft_mask

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Rename the paca->soft_enabled to paca->irq_soft_mask as it is no
longer used as a flag for interrupt state, but a mask.

Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Madhavan Srinivasan
2017-12-20 09:25:50 +05:30
committed by Michael Ellerman
parent 01417c6cc7
commit 4e26bc4a4e
19 changed files with 74 additions and 81 deletions
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56
arch/powerpc/include/asm/hw_irq.h
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@@ -29,7 +29,7 @@
#define PACA_IRQ_HMI 0x20
/*
* flags for paca->soft_enabled
* flags for paca->irq_soft_mask
*/
#define IRQS_ENABLED 0
#define IRQS_DISABLED 1
@@ -49,14 +49,14 @@ extern void unknown_exception(struct pt_regs *regs);
#ifdef CONFIG_PPC64
#include <asm/paca.h>
static inline notrace unsigned long soft_enabled_return(void)
static inline notrace unsigned long irq_soft_mask_return(void)
{
unsigned long flags;
asm volatile(
"lbz %0,%1(13)"
: "=r" (flags)
: "i" (offsetof(struct paca_struct, soft_enabled)));
: "i" (offsetof(struct paca_struct, irq_soft_mask)));
return flags;
}
@@ -64,18 +64,24 @@ static inline notrace unsigned long soft_enabled_return(void)
/*
* The "memory" clobber acts as both a compiler barrier
* for the critical section and as a clobber because
* we changed paca->soft_enabled
* we changed paca->irq_soft_mask
*/
static inline notrace void soft_enabled_set(unsigned long enable)
static inline notrace void irq_soft_mask_set(unsigned long mask)
{
#ifdef CONFIG_TRACE_IRQFLAGS
/*
* mask must always include LINUX bit if any are set, and
* interrupts don't get replayed until the Linux interrupt is
* unmasked. This could be changed to replay partial unmasks
* in future, which would allow Linux masks to nest inside
* other masks, among other things. For now, be very dumb and
* simple.
* The irq mask must always include the STD bit if any are set.
*
* and interrupts don't get replayed until the standard
* interrupt (local_irq_disable()) is unmasked.
*
* Other masks must only provide additional masking beyond
* the standard, and they are also not replayed until the
* standard interrupt becomes unmasked.
*
* This could be changed, but it will require partial
* unmasks to be replayed, among other things. For now, take
* the simple approach.
*/
WARN_ON(mask && !(mask & IRQS_DISABLED));
#endif
@@ -83,12 +89,12 @@ static inline notrace void soft_enabled_set(unsigned long enable)
asm volatile(
"stb %0,%1(13)"
:
: "r" (enable),
"i" (offsetof(struct paca_struct, soft_enabled))
: "r" (mask),
"i" (offsetof(struct paca_struct, irq_soft_mask))
: "memory");
}
static inline notrace unsigned long soft_enabled_set_return(unsigned long mask)
static inline notrace unsigned long irq_soft_mask_set_return(unsigned long mask)
{
unsigned long flags;
@@ -99,7 +105,7 @@ static inline notrace unsigned long soft_enabled_set_return(unsigned long mask)
asm volatile(
"lbz %0,%1(13); stb %2,%1(13)"
: "=&r" (flags)
: "i" (offsetof(struct paca_struct, soft_enabled)),
: "i" (offsetof(struct paca_struct, irq_soft_mask)),
"r" (mask)
: "memory");
@@ -108,12 +114,12 @@ static inline notrace unsigned long soft_enabled_set_return(unsigned long mask)
static inline unsigned long arch_local_save_flags(void)
{
return soft_enabled_return();
return irq_soft_mask_return();
}
static inline void arch_local_irq_disable(void)
{
soft_enabled_set(IRQS_DISABLED);
irq_soft_mask_set(IRQS_DISABLED);
}
extern void arch_local_irq_restore(unsigned long);
@@ -125,7 +131,7 @@ static inline void arch_local_irq_enable(void)
static inline unsigned long arch_local_irq_save(void)
{
return soft_enabled_set_return(IRQS_DISABLED);
return irq_soft_mask_set_return(IRQS_DISABLED);
}
static inline bool arch_irqs_disabled_flags(unsigned long flags)
@@ -146,13 +152,13 @@ static inline bool arch_irqs_disabled(void)
#define __hard_irq_disable() __mtmsrd(local_paca->kernel_msr, 1)
#endif
#define hard_irq_disable() do { \
unsigned long flags; \
__hard_irq_disable(); \
flags = soft_enabled_set_return(IRQS_DISABLED);\
local_paca->irq_happened |= PACA_IRQ_HARD_DIS; \
if (!arch_irqs_disabled_flags(flags)) \
trace_hardirqs_off(); \
#define hard_irq_disable() do { \
unsigned long flags; \
__hard_irq_disable(); \
flags = irq_soft_mask_set_return(IRQS_DISABLED); \
local_paca->irq_happened |= PACA_IRQ_HARD_DIS; \
if (!arch_irqs_disabled_flags(flags)) \
trace_hardirqs_off(); \
} while(0)
static inline bool lazy_irq_pending(void)