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Deferred errors indicate error conditions that were not corrected, but require no action from S/W (or action is optional).These errors provide info about a latent UC MCE that can occur when a poisoned data is consumed by the processor. Processors that report these errors can be configured to generate APIC interrupts to notify OS about the error. Provide an interrupt handler in this patch so that OS can catch these errors as and when they happen. Currently, we simply log the errors and exit the handler as S/W action is not mandated. Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com> Cc: Tony Luck <tony.luck@intel.com> Cc: x86-ml <x86@kernel.org> Cc: linux-edac <linux-edac@vger.kernel.org> Link: http://lkml.kernel.org/r/1430913538-1415-5-git-send-email-Aravind.Gopalakrishnan@amd.com Signed-off-by: Borislav Petkov <bp@suse.de>
122 lines
2.8 KiB
C
122 lines
2.8 KiB
C
#undef TRACE_SYSTEM
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#define TRACE_SYSTEM irq_vectors
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#if !defined(_TRACE_IRQ_VECTORS_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_IRQ_VECTORS_H
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#include <linux/tracepoint.h>
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extern void trace_irq_vector_regfunc(void);
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extern void trace_irq_vector_unregfunc(void);
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DECLARE_EVENT_CLASS(x86_irq_vector,
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TP_PROTO(int vector),
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TP_ARGS(vector),
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TP_STRUCT__entry(
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__field( int, vector )
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),
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TP_fast_assign(
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__entry->vector = vector;
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),
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TP_printk("vector=%d", __entry->vector) );
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#define DEFINE_IRQ_VECTOR_EVENT(name) \
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DEFINE_EVENT_FN(x86_irq_vector, name##_entry, \
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TP_PROTO(int vector), \
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TP_ARGS(vector), \
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trace_irq_vector_regfunc, \
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trace_irq_vector_unregfunc); \
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DEFINE_EVENT_FN(x86_irq_vector, name##_exit, \
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TP_PROTO(int vector), \
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TP_ARGS(vector), \
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trace_irq_vector_regfunc, \
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trace_irq_vector_unregfunc);
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/*
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* local_timer - called when entering/exiting a local timer interrupt
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* vector handler
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*/
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DEFINE_IRQ_VECTOR_EVENT(local_timer);
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/*
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* reschedule - called when entering/exiting a reschedule vector handler
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*/
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DEFINE_IRQ_VECTOR_EVENT(reschedule);
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/*
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* spurious_apic - called when entering/exiting a spurious apic vector handler
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*/
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DEFINE_IRQ_VECTOR_EVENT(spurious_apic);
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/*
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* error_apic - called when entering/exiting an error apic vector handler
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*/
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DEFINE_IRQ_VECTOR_EVENT(error_apic);
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/*
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* x86_platform_ipi - called when entering/exiting a x86 platform ipi interrupt
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* vector handler
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*/
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DEFINE_IRQ_VECTOR_EVENT(x86_platform_ipi);
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/*
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* irq_work - called when entering/exiting a irq work interrupt
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* vector handler
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*/
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DEFINE_IRQ_VECTOR_EVENT(irq_work);
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/*
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* We must dis-allow sampling irq_work_exit() because perf event sampling
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* itself can cause irq_work, which would lead to an infinite loop;
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*
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* 1) irq_work_exit happens
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* 2) generates perf sample
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* 3) generates irq_work
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* 4) goto 1
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*/
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TRACE_EVENT_PERF_PERM(irq_work_exit, is_sampling_event(p_event) ? -EPERM : 0);
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/*
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* call_function - called when entering/exiting a call function interrupt
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* vector handler
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*/
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DEFINE_IRQ_VECTOR_EVENT(call_function);
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/*
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* call_function_single - called when entering/exiting a call function
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* single interrupt vector handler
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*/
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DEFINE_IRQ_VECTOR_EVENT(call_function_single);
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/*
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* threshold_apic - called when entering/exiting a threshold apic interrupt
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* vector handler
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*/
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DEFINE_IRQ_VECTOR_EVENT(threshold_apic);
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/*
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* deferred_error_apic - called when entering/exiting a deferred apic interrupt
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* vector handler
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*/
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DEFINE_IRQ_VECTOR_EVENT(deferred_error_apic);
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/*
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* thermal_apic - called when entering/exiting a thermal apic interrupt
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* vector handler
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*/
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DEFINE_IRQ_VECTOR_EVENT(thermal_apic);
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#undef TRACE_INCLUDE_PATH
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#define TRACE_INCLUDE_PATH .
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#define TRACE_INCLUDE_FILE irq_vectors
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#endif /* _TRACE_IRQ_VECTORS_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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