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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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8cf868affd
Some tracepoints have a registration function that gets enabled when the tracepoint is enabled. There may be cases that the registraction function must fail (for example, can't allocate enough memory). In this case, the tracepoint should also fail to register, otherwise the user would not know why the tracepoint is not working. Cc: David Howells <dhowells@redhat.com> Cc: Seiji Aguchi <seiji.aguchi@hds.com> Cc: Anton Blanchard <anton@samba.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
53 lines
1.3 KiB
C
53 lines
1.3 KiB
C
#undef TRACE_SYSTEM
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#define TRACE_SYSTEM exceptions
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#if !defined(_TRACE_PAGE_FAULT_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_PAGE_FAULT_H
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#include <linux/tracepoint.h>
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extern int trace_irq_vector_regfunc(void);
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extern void trace_irq_vector_unregfunc(void);
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DECLARE_EVENT_CLASS(x86_exceptions,
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TP_PROTO(unsigned long address, struct pt_regs *regs,
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unsigned long error_code),
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TP_ARGS(address, regs, error_code),
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TP_STRUCT__entry(
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__field( unsigned long, address )
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__field( unsigned long, ip )
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__field( unsigned long, error_code )
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),
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TP_fast_assign(
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__entry->address = address;
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__entry->ip = regs->ip;
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__entry->error_code = error_code;
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),
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TP_printk("address=%pf ip=%pf error_code=0x%lx",
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(void *)__entry->address, (void *)__entry->ip,
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__entry->error_code) );
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#define DEFINE_PAGE_FAULT_EVENT(name) \
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DEFINE_EVENT_FN(x86_exceptions, name, \
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TP_PROTO(unsigned long address, struct pt_regs *regs, \
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unsigned long error_code), \
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TP_ARGS(address, regs, error_code), \
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trace_irq_vector_regfunc, \
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trace_irq_vector_unregfunc);
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DEFINE_PAGE_FAULT_EVENT(page_fault_user);
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DEFINE_PAGE_FAULT_EVENT(page_fault_kernel);
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#undef TRACE_INCLUDE_PATH
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#define TRACE_INCLUDE_PATH .
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#define TRACE_INCLUDE_FILE exceptions
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#endif /* _TRACE_PAGE_FAULT_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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