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trace: [simple] Port to generic event information and new control interface
The backend is forced to dump event numbers using 64 bits, as TraceEventID isan enum.
Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
trace: drop unused TraceBufferRecord->next_tbuf_idx field
Signed-off-by: Harsh Prateek Bora <harsh@linux.vnet.ibm.com>Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Simpletrace v2: Support multiple arguments, strings.
Existing simpletrace backend allows to trace at max 6 args and does notsupport strings. This newer tracelog format gets rid of fixed size recordsand therefore allows to trace variable number of args including strings....
monitor: remove unused do_info_trace
Going forward with simpletrace v2 variable size trace records, we cannothave a generic function to print trace event info and therefore thisinterface becomes invalid.
As per Stefan Hajnoczi:
"This command is only available from the human monitor. It's not very...
trace: separate trace event control and query routines from the simple backend
Generalize the 'st_print_trace_events' and 'st_change_trace_event_state' intobackend-specific 'trace_print_events' and 'trace_event_set_state' (respectively)in the "trace/control.h" file....
trace: move backend-specific code into the trace/ directory
Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
trace: avoid conditional code compilation during option parsing
A default implementation for backend-specific routines is provided in"trace/default.c", which backends can override by setting "trace_default=no" in"configure".