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perf probe: Warn when more than one line are given

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Check multiple --lines option and print warning informing that only the
first specified --line option is valid.

Changes from the 1st post:

- Accept only the first option instead of the last.
- Fix warning message according to David's comment.
- Mark as a bugfix.

Cc: David Ahern <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Pekka Enberg <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: [email protected]
Link: http://lkml.kernel.org/r/20110811110253.19900.96192.stgit@fedora15
Signed-off-by: Masami Hiramatsu <[email protected]>
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
Masami Hiramatsu 2011-08-11 20:02:53 +09:00 • committed by Arnaldo Carvalho de Melo
commit 13e27d7686
1 changed files with 11 additions and 3 deletions
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14
tools/perf/builtin-probe.c
View file

@ -134,10 +134,18 @@ static int opt_show_lines(const struct option *opt __used,
{
int ret = 0;
if (str)
ret = parse_line_range_desc(str, &params.line_range);
INIT_LIST_HEAD(&params.line_range.line_list);
if (!str)
return 0;
if (params.show_lines) {
pr_warning("Warning: more than one --line options are"
" detected. Only the first one is valid.\n");
return 0;
}
params.show_lines = true;
ret = parse_line_range_desc(str, &params.line_range);
INIT_LIST_HEAD(&params.line_range.line_list);
return ret;
}