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trace: print a warning if user tries to enable an unknown trace event

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There was no warning if a bad trace event name was given to
'trace-event' command, thus the user could think that the command
was successful even if this was not the case.

Print a warning if the user tries to enable a trace event which is not
known.

Acked-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Blue Swirl 2010-10-13 19:14:29 +00:00
parent 2abf314ddd
commit f871d6893a
3 changed files with 9 additions and 3 deletions
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2
simpletrace.h
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@ -31,7 +31,7 @@ void trace5(TraceEventID event, uint64_t x1, uint64_t x2, uint64_t x3, uint64_t
void trace6(TraceEventID event, uint64_t x1, uint64_t x2, uint64_t x3, uint64_t x4, uint64_t x5, uint64_t x6);
void st_print_trace(FILE *stream, int (*stream_printf)(FILE *stream, const char *fmt, ...));
void st_print_trace_events(FILE *stream, int (*stream_printf)(FILE *stream, const char *fmt, ...));
void st_change_trace_event_state(const char *tname, bool tstate);
bool st_change_trace_event_state(const char *tname, bool tstate);
void st_print_trace_file_status(FILE *stream, int (*stream_printf)(FILE *stream, const char *fmt, ...));
void st_set_trace_file_enabled(bool enable);
bool st_set_trace_file(const char *file);