From c214909b36efec632432acdcbfacdd46a6e11370 Mon Sep 17 00:00:00 2001 From: Gui Jianfeng Date: Wed, 16 Jun 2010 13:21:44 +0800 Subject: [PATCH] perf tools: Fix find tids routine by excluding "." and ".." Introduce a filter function to skip "." and ".." directories when calculating tid number, otherwise tid 0 will be included in the all_tid result array. Cc: Ingo Molnar LKML-Reference: <4C185F68.1020505@cn.fujitsu.com> Signed-off-by: Gui Jianfeng Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/thread.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c index 1f7ecd47f499..9a448b47400c 100644 --- a/tools/perf/util/thread.c +++ b/tools/perf/util/thread.c @@ -7,6 +7,15 @@ #include "util.h" #include "debug.h" +/* Skip "." and ".." directories */ +static int filter(const struct dirent *dir) +{ + if (dir->d_name[0] == '.') + return 0; + else + return 1; +} + int find_all_tid(int pid, pid_t ** all_tid) { char name[256]; @@ -16,7 +25,7 @@ int find_all_tid(int pid, pid_t ** all_tid) int i; sprintf(name, "/proc/%d/task", pid); - items = scandir(name, &namelist, NULL, NULL); + items = scandir(name, &namelist, filter, NULL); if (items <= 0) return -ENOENT; *all_tid = malloc(sizeof(pid_t) * items);