spdk_trace_history Struct Reference

Collaboration diagram for spdk_trace_history:

Data Fields
int	lcore
	Logical core number associated with this structure instance.
uint64_t	num_entries
	Number of trace_entries contained in each trace_history.
uint64_t	tpoint_count [SPDK_TRACE_MAX_TPOINT_ID]
	Running count of number of occurrences of each tracepoint on this lcore.
uint64_t	next_entry
	Index to next spdk_trace_entry to fill.
struct spdk_trace_entry	entries [0]
	Circular buffer of spdk_trace_entry structures for tracing tpoints on this core.

Field Documentation

entries

struct spdk_trace_entry spdk_trace_history::entries[0]

Circular buffer of spdk_trace_entry structures for tracing tpoints on this core.

Debug tool spdk_trace reads this buffer from shared memory to post-process the tpoint entries and display in a human-readable format.

tpoint_count

uint64_t spdk_trace_history::tpoint_count[SPDK_TRACE_MAX_TPOINT_ID]

Running count of number of occurrences of each tracepoint on this lcore.

Debug tools can use this to easily count tracepoints such as number of SCSI tasks completed or PDUs read.

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The documentation for this struct was generated from the following file:

• trace.h