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x86/vector: Add tracepoints for vector management
Add tracepoints for analysing the new vector management Signed-off-by: Thomas Gleixner <[email protected]> Tested-by: Juergen Gross <[email protected]> Tested-by: Yu Chen <[email protected]> Acked-by: Juergen Gross <[email protected]> Cc: Boris Ostrovsky <[email protected]> Cc: Tony Luck <[email protected]> Cc: Marc Zyngier <[email protected]> Cc: Alok Kataria <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: "Rafael J. Wysocki" <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Paolo Bonzini <[email protected]> Cc: Rui Zhang <[email protected]> Cc: "K. Y. Srinivasan" <[email protected]> Cc: Arjan van de Ven <[email protected]> Cc: Dan Williams <[email protected]> Cc: Len Brown <[email protected]> Link: https://lkml.kernel.org/r/[email protected]
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‎arch/x86/include/asm/trace/irq_vectors.h

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Original file line numberDiff line numberDiff line change
@@ -137,6 +137,250 @@ DEFINE_IRQ_VECTOR_EVENT(deferred_error_apic);
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DEFINE_IRQ_VECTOR_EVENT(thermal_apic);
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#endif
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TRACE_EVENT(vector_config,
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TP_PROTO(unsigned int irq, unsigned int vector,
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unsigned int cpu, unsigned int apicdest),
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TP_ARGS(irq, vector, cpu, apicdest),
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TP_STRUCT__entry(
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__field( unsigned int, irq )
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__field( unsigned int, vector )
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__field( unsigned int, cpu )
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__field( unsigned int, apicdest )
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),
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TP_fast_assign(
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__entry->irq = irq;
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__entry->vector = vector;
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__entry->cpu = cpu;
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__entry->apicdest = apicdest;
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),
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TP_printk("irq=%u vector=%u cpu=%u apicdest=0x%08x",
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__entry->irq, __entry->vector, __entry->cpu,
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__entry->apicdest)
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);
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DECLARE_EVENT_CLASS(vector_mod,
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TP_PROTO(unsigned int irq, unsigned int vector,
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unsigned int cpu, unsigned int prev_vector,
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unsigned int prev_cpu),
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TP_ARGS(irq, vector, cpu, prev_vector, prev_cpu),
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TP_STRUCT__entry(
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__field( unsigned int, irq )
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__field( unsigned int, vector )
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__field( unsigned int, cpu )
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__field( unsigned int, prev_vector )
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__field( unsigned int, prev_cpu )
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),
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TP_fast_assign(
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__entry->irq = irq;
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__entry->vector = vector;
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__entry->cpu = cpu;
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__entry->prev_vector = prev_vector;
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__entry->prev_cpu = prev_cpu;
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),
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TP_printk("irq=%u vector=%u cpu=%u prev_vector=%u prev_cpu=%u",
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__entry->irq, __entry->vector, __entry->cpu,
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__entry->prev_vector, __entry->prev_cpu)
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);
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#define DEFINE_IRQ_VECTOR_MOD_EVENT(name) \
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DEFINE_EVENT_FN(vector_mod, name, \
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TP_PROTO(unsigned int irq, unsigned int vector, \
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unsigned int cpu, unsigned int prev_vector, \
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unsigned int prev_cpu), \
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TP_ARGS(irq, vector, cpu, prev_vector, prev_cpu), NULL, NULL); \
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DEFINE_IRQ_VECTOR_MOD_EVENT(vector_update);
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DEFINE_IRQ_VECTOR_MOD_EVENT(vector_clear);
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DECLARE_EVENT_CLASS(vector_reserve,
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TP_PROTO(unsigned int irq, int ret),
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TP_ARGS(irq, ret),
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TP_STRUCT__entry(
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__field( unsigned int, irq )
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__field( int, ret )
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),
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TP_fast_assign(
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__entry->irq = irq;
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__entry->ret = ret;
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),
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TP_printk("irq=%u ret=%d", __entry->irq, __entry->ret)
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);
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#define DEFINE_IRQ_VECTOR_RESERVE_EVENT(name) \
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DEFINE_EVENT_FN(vector_reserve, name, \
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TP_PROTO(unsigned int irq, int ret), \
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TP_ARGS(irq, ret), NULL, NULL); \
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DEFINE_IRQ_VECTOR_RESERVE_EVENT(vector_reserve_managed);
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DEFINE_IRQ_VECTOR_RESERVE_EVENT(vector_reserve);
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TRACE_EVENT(vector_alloc,
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TP_PROTO(unsigned int irq, unsigned int vector, bool reserved,
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int ret),
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TP_ARGS(irq, vector, ret, reserved),
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TP_STRUCT__entry(
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__field( unsigned int, irq )
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__field( unsigned int, vector )
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__field( bool, reserved )
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__field( int, ret )
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),
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TP_fast_assign(
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__entry->irq = irq;
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__entry->vector = ret < 0 ? 0 : vector;
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__entry->reserved = reserved;
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__entry->ret = ret > 0 ? 0 : ret;
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),
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TP_printk("irq=%u vector=%u reserved=%d ret=%d",
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__entry->irq, __entry->vector,
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__entry->reserved, __entry->ret)
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);
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TRACE_EVENT(vector_alloc_managed,
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TP_PROTO(unsigned int irq, unsigned int vector,
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int ret),
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TP_ARGS(irq, vector, ret),
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TP_STRUCT__entry(
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__field( unsigned int, irq )
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__field( unsigned int, vector )
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__field( int, ret )
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),
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TP_fast_assign(
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__entry->irq = irq;
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__entry->vector = ret < 0 ? 0 : vector;
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__entry->ret = ret > 0 ? 0 : ret;
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),
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TP_printk("irq=%u vector=%u ret=%d",
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__entry->irq, __entry->vector, __entry->ret)
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);
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DECLARE_EVENT_CLASS(vector_activate,
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TP_PROTO(unsigned int irq, bool is_managed, bool can_reserve,
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bool early),
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TP_ARGS(irq, is_managed, can_reserve, early),
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TP_STRUCT__entry(
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__field( unsigned int, irq )
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__field( bool, is_managed )
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__field( bool, can_reserve )
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__field( bool, early )
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),
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TP_fast_assign(
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__entry->irq = irq;
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__entry->is_managed = is_managed;
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__entry->can_reserve = can_reserve;
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__entry->early = early;
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),
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TP_printk("irq=%u is_managed=%d can_reserve=%d early=%d",
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__entry->irq, __entry->is_managed, __entry->can_reserve,
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__entry->early)
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);
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#define DEFINE_IRQ_VECTOR_ACTIVATE_EVENT(name) \
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DEFINE_EVENT_FN(vector_activate, name, \
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TP_PROTO(unsigned int irq, bool is_managed, \
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bool can_reserve, bool early), \
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TP_ARGS(irq, is_managed, can_reserve, early), NULL, NULL); \
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DEFINE_IRQ_VECTOR_ACTIVATE_EVENT(vector_activate);
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DEFINE_IRQ_VECTOR_ACTIVATE_EVENT(vector_deactivate);
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TRACE_EVENT(vector_teardown,
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TP_PROTO(unsigned int irq, bool is_managed, bool has_reserved),
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TP_ARGS(irq, is_managed, has_reserved),
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TP_STRUCT__entry(
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__field( unsigned int, irq )
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__field( bool, is_managed )
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__field( bool, has_reserved )
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),
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TP_fast_assign(
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__entry->irq = irq;
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__entry->is_managed = is_managed;
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__entry->has_reserved = has_reserved;
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),
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TP_printk("irq=%u is_managed=%d has_reserved=%d",
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__entry->irq, __entry->is_managed, __entry->has_reserved)
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);
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TRACE_EVENT(vector_setup,
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TP_PROTO(unsigned int irq, bool is_legacy, int ret),
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TP_ARGS(irq, is_legacy, ret),
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TP_STRUCT__entry(
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__field( unsigned int, irq )
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__field( bool, is_legacy )
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__field( int, ret )
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),
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TP_fast_assign(
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__entry->irq = irq;
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__entry->is_legacy = is_legacy;
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__entry->ret = ret;
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),
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TP_printk("irq=%u is_legacy=%d ret=%d",
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__entry->irq, __entry->is_legacy, __entry->ret)
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);
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TRACE_EVENT(vector_free_moved,
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TP_PROTO(unsigned int irq, unsigned int vector, bool is_managed),
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TP_ARGS(irq, vector, is_managed),
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TP_STRUCT__entry(
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__field( unsigned int, irq )
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__field( unsigned int, vector )
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__field( bool, is_managed )
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),
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TP_fast_assign(
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__entry->irq = irq;
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__entry->vector = vector;
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__entry->is_managed = is_managed;
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),
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TP_printk("irq=%u vector=%u is_managed=%d",
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__entry->irq, __entry->vector, __entry->is_managed)
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);
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#endif /* CONFIG_X86_LOCAL_APIC */
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#undef TRACE_INCLUDE_PATH

‎arch/x86/kernel/apic/vector.c

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Original file line numberDiff line numberDiff line change
@@ -22,6 +22,8 @@
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#include <asm/desc.h>
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#include <asm/irq_remapping.h>
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#include <asm/trace/irq_vectors.h>
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struct apic_chip_data {
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struct irq_cfg cfg;
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unsigned int cpu;

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