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perf probe: Fix module name matching 

If module is "module" then dso->short_name is "[module]".  Substring
comparing is't enough: "raid10" matches to "[raid1]".  This patch also
checks terminating zero in module name.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Link: http://lkml.kernel.org/r/147039975648.715620.12985971832789032159.stgit@buzz
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Konstantin Khlebnikov 2016-08-05 15:22:36 +03:00 committed by Arnaldo Carvalho de Melo
parent 8e34189b34
commit cb3f3378cd
1 changed files with 3 additions and 1 deletions
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4
tools/perf/util/probe-event.c
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@ -170,8 +170,10 @@ static struct map *kernel_get_module_map(const char *module)
module = "kernel";
for (pos = maps__first(maps); pos; pos = map__next(pos)) {
/* short_name is "[module]" */
if (strncmp(pos->dso->short_name + 1, module,
pos->dso->short_name_len - 2) == 0) {
pos->dso->short_name_len - 2) == 0 &&
module[pos->dso->short_name_len - 2] == '\0') {
return pos;
}
}