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/******************************************************************************
* trace.h
*/
#ifndef __XEN_PUBLIC_TRACE_H__
#define __XEN_PUBLIC_TRACE_H__
/* This structure represents a single trace buffer record. */
struct t_rec {
u64 cycles; /* 64 bit cycle counter timestamp */
u32 event; /* 32 bit event ID */
u32 d1, d2, d3, d4, d5; /* event data items */
};
/*
* This structure contains the metadata for a single trace buffer. The head
* field, indexes into an array of struct t_rec's.
*/
struct t_buf {
unsigned long data; /* pointer to data area. machine address
* for convenience in user space code */
unsigned long size; /* size of the data area, in t_recs */
unsigned long head; /* array index of the most recent record */
/* Xen-private elements follow... */
struct t_rec *head_ptr; /* pointer to the head record */
struct t_rec *vdata; /* virtual address pointer to data */
};
#endif /* __XEN_PUBLIC_TRACE_H__ */
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