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perf tools: Fix line number in the config file error message

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If we fail to parse the config file within the callback function,
the line number counter 'could be' already on the next line.

This results in wrong line number report like:

  $ cat ~/.perfconfig
  [call-graph]
          sort-key = krava
  $ perf record ls
  Fatal: bad config file line 3 in /home/jolsa/.perfconfig

Fixing this by saving the current line number for this case.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Milian Wolff <mail@milianw.de>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20140923115656.GC2979@krava.brq.redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2014-09-23 13:56:56 +02:00 committed by Arnaldo Carvalho de Melo
parent 5a2e5e8598
commit 49757c9cc7
1 changed files with 11 additions and 2 deletions
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13
tools/perf/util/config.c
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@ -222,7 +222,8 @@ static int perf_parse_file(config_fn_t fn, void *data)
const unsigned char *bomptr = utf8_bom;
for (;;) {
int c = get_next_char();
int line, c = get_next_char();
if (bomptr && *bomptr) {
/* We are at the file beginning; skip UTF8-encoded BOM
* if present. Sane editors won't put this in on their
@ -261,8 +262,16 @@ static int perf_parse_file(config_fn_t fn, void *data)
if (!isalpha(c))
break;
var[baselen] = tolower(c);
if (get_value(fn, data, var, baselen+1) < 0)
/*
* The get_value function might or might not reach the '\n',
* so saving the current line number for error reporting.
*/
line = config_linenr;
if (get_value(fn, data, var, baselen+1) < 0) {
config_linenr = line;
break;
}
}
die("bad config file line %d in %s", config_linenr, config_file_name);
}