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percpu: add tracepoint support for percpu memory
Add support for tracepoints to the following events: chunk allocation, chunk free, area allocation, area free, and area allocation failure. This should let us replay percpu memory requests and evaluate corresponding decisions. Signed-off-by: Dennis Zhou <[email protected]> Signed-off-by: Tejun Heo <[email protected]>
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,125 @@ | ||
#undef TRACE_SYSTEM | ||
#define TRACE_SYSTEM percpu | ||
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#if !defined(_TRACE_PERCPU_H) || defined(TRACE_HEADER_MULTI_READ) | ||
#define _TRACE_PERCPU_H | ||
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#include <linux/tracepoint.h> | ||
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TRACE_EVENT(percpu_alloc_percpu, | ||
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TP_PROTO(bool reserved, bool is_atomic, size_t size, | ||
size_t align, void *base_addr, int off, void __percpu *ptr), | ||
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TP_ARGS(reserved, is_atomic, size, align, base_addr, off, ptr), | ||
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TP_STRUCT__entry( | ||
__field( bool, reserved ) | ||
__field( bool, is_atomic ) | ||
__field( size_t, size ) | ||
__field( size_t, align ) | ||
__field( void *, base_addr ) | ||
__field( int, off ) | ||
__field( void __percpu *, ptr ) | ||
), | ||
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TP_fast_assign( | ||
__entry->reserved = reserved; | ||
__entry->is_atomic = is_atomic; | ||
__entry->size = size; | ||
__entry->align = align; | ||
__entry->base_addr = base_addr; | ||
__entry->off = off; | ||
__entry->ptr = ptr; | ||
), | ||
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TP_printk("reserved=%d is_atomic=%d size=%zu align=%zu base_addr=%p off=%d ptr=%p", | ||
__entry->reserved, __entry->is_atomic, | ||
__entry->size, __entry->align, | ||
__entry->base_addr, __entry->off, __entry->ptr) | ||
); | ||
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TRACE_EVENT(percpu_free_percpu, | ||
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TP_PROTO(void *base_addr, int off, void __percpu *ptr), | ||
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TP_ARGS(base_addr, off, ptr), | ||
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TP_STRUCT__entry( | ||
__field( void *, base_addr ) | ||
__field( int, off ) | ||
__field( void __percpu *, ptr ) | ||
), | ||
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TP_fast_assign( | ||
__entry->base_addr = base_addr; | ||
__entry->off = off; | ||
__entry->ptr = ptr; | ||
), | ||
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TP_printk("base_addr=%p off=%d ptr=%p", | ||
__entry->base_addr, __entry->off, __entry->ptr) | ||
); | ||
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TRACE_EVENT(percpu_alloc_percpu_fail, | ||
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TP_PROTO(bool reserved, bool is_atomic, size_t size, size_t align), | ||
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TP_ARGS(reserved, is_atomic, size, align), | ||
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TP_STRUCT__entry( | ||
__field( bool, reserved ) | ||
__field( bool, is_atomic ) | ||
__field( size_t, size ) | ||
__field( size_t, align ) | ||
), | ||
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TP_fast_assign( | ||
__entry->reserved = reserved; | ||
__entry->is_atomic = is_atomic; | ||
__entry->size = size; | ||
__entry->align = align; | ||
), | ||
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TP_printk("reserved=%d is_atomic=%d size=%zu align=%zu", | ||
__entry->reserved, __entry->is_atomic, | ||
__entry->size, __entry->align) | ||
); | ||
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TRACE_EVENT(percpu_create_chunk, | ||
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TP_PROTO(void *base_addr), | ||
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TP_ARGS(base_addr), | ||
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TP_STRUCT__entry( | ||
__field( void *, base_addr ) | ||
), | ||
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TP_fast_assign( | ||
__entry->base_addr = base_addr; | ||
), | ||
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TP_printk("base_addr=%p", __entry->base_addr) | ||
); | ||
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TRACE_EVENT(percpu_destroy_chunk, | ||
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TP_PROTO(void *base_addr), | ||
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TP_ARGS(base_addr), | ||
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TP_STRUCT__entry( | ||
__field( void *, base_addr ) | ||
), | ||
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TP_fast_assign( | ||
__entry->base_addr = base_addr; | ||
), | ||
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TP_printk("base_addr=%p", __entry->base_addr) | ||
); | ||
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#endif /* _TRACE_PERCPU_H */ | ||
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#include <trace/define_trace.h> |
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