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 <mingo@elte.hu> LKML-Reference: <4C185F68.1020505@cn.fujitsu.com> Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -7,6 +7,15 @@
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#include "util.h"
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#include "util.h"
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#include "debug.h"
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#include "debug.h"
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/* Skip "." and ".." directories */
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static int filter(const struct dirent *dir)
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{
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if (dir->d_name[0] == '.')
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return 0;
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else
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return 1;
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}
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int find_all_tid(int pid, pid_t ** all_tid)
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int find_all_tid(int pid, pid_t ** all_tid)
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{
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{
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char name[256];
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char name[256];
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@ -16,7 +25,7 @@ int find_all_tid(int pid, pid_t ** all_tid)
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int i;
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int i;
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sprintf(name, "/proc/%d/task", pid);
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sprintf(name, "/proc/%d/task", pid);
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items = scandir(name, &namelist, NULL, NULL);
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items = scandir(name, &namelist, filter, NULL);
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if (items <= 0)
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if (items <= 0)
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return -ENOENT;
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return -ENOENT;
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*all_tid = malloc(sizeof(pid_t) * items);
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*all_tid = malloc(sizeof(pid_t) * items);
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