Messages in this thread Patch in this message | | | From | Arnaldo Carvalho de Melo <> | Subject | [PATCH 12/13] perf symbols: Use lsdir() for the search in kcore cache directory | Date | Wed, 11 May 2016 13:32:53 -0300 |
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From: Masami Hiramatsu <mhiramat@kernel.org>
Use lsdir() to search in kcore cache directory. This also avoids checking hidden dot directory entries, because kcore cache directories must always have the name from timestamps when taking the kcore snapshots, and it never start with dot.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Hemant Kumar <hemant@linux.vnet.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20160511135208.23943.68071.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> --- tools/perf/util/symbol.c | 26 ++++++++++++++------------ 1 file changed, 14 insertions(+), 12 deletions(-)
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index 4ada5a44aaf2..7fb33304fb4e 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -1608,25 +1608,27 @@ out: return err; } +static bool visible_dir_filter(const char *name, struct dirent *d) +{ + if (d->d_type != DT_DIR) + return false; + return lsdir_no_dot_filter(name, d); +} + static int find_matching_kcore(struct map *map, char *dir, size_t dir_sz) { char kallsyms_filename[PATH_MAX]; - struct dirent *dent; int ret = -1; - DIR *d; + struct strlist *dirs; + struct str_node *nd; - d = opendir(dir); - if (!d) + dirs = lsdir(dir, visible_dir_filter); + if (!dirs) return -1; - while (1) { - dent = readdir(d); - if (!dent) - break; - if (dent->d_type != DT_DIR) - continue; + strlist__for_each(nd, dirs) { scnprintf(kallsyms_filename, sizeof(kallsyms_filename), - "%s/%s/kallsyms", dir, dent->d_name); + "%s/%s/kallsyms", dir, nd->s); if (!validate_kcore_addresses(kallsyms_filename, map)) { strlcpy(dir, kallsyms_filename, dir_sz); ret = 0; @@ -1634,7 +1636,7 @@ static int find_matching_kcore(struct map *map, char *dir, size_t dir_sz) } } - closedir(d); + strlist__delete(dirs); return ret; } -- 2.5.5
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