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| author | Madhavan Srinivasan <maddy@linux.vnet.ibm.com> | 2017-12-20 04:55:53 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-01-19 12:37:02 +0100 |
| commit | f442d004806e31fe5aab614ec48e53f7b38f7c2d (patch) | |
| tree | 6d4db2dcff2b070ef751bac009a17b2528bb922e /arch/powerpc/include/asm/hw_irq.h | |
| parent | powerpc/64s: Add support to take additional parameter in MASKABLE_* macro (diff) | |
| download | linux-f442d004806e31fe5aab614ec48e53f7b38f7c2d.tar.xz linux-f442d004806e31fe5aab614ec48e53f7b38f7c2d.zip | |
powerpc/64s: Add support to mask perf interrupts and replay them
Two new bit mask field "IRQ_DISABLE_MASK_PMU" is introduced to support
the masking of PMI and "IRQ_DISABLE_MASK_ALL" to aid interrupt masking
checking.
Couple of new irq #defs "PACA_IRQ_PMI" and "SOFTEN_VALUE_0xf0*" added
to use in the exception code to check for PMI interrupts.
In the masked_interrupt handler, for PMIs we reset the MSR[EE] and
return. In the __check_irq_replay(), replay the PMI interrupt by
calling performance_monitor_common handler.
Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/hw_irq.h')
| -rw-r--r-- | arch/powerpc/include/asm/hw_irq.h | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/arch/powerpc/include/asm/hw_irq.h b/arch/powerpc/include/asm/hw_irq.h index 5c82bb116832..552a2c6e428f 100644 --- a/arch/powerpc/include/asm/hw_irq.h +++ b/arch/powerpc/include/asm/hw_irq.h @@ -27,12 +27,15 @@ #define PACA_IRQ_DEC 0x08 /* Or FIT */ #define PACA_IRQ_EE_EDGE 0x10 /* BookE only */ #define PACA_IRQ_HMI 0x20 +#define PACA_IRQ_PMI 0x40 /* * flags for paca->irq_soft_mask */ #define IRQS_ENABLED 0 -#define IRQS_DISABLED 1 +#define IRQS_DISABLED 1 /* local_irq_disable() interrupts */ +#define IRQS_PMI_DISABLED 2 +#define IRQS_ALL_DISABLED (IRQS_DISABLED | IRQS_PMI_DISABLED) #endif /* CONFIG_PPC64 */ @@ -152,13 +155,13 @@ 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 = irq_soft_mask_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_ALL_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) |