process-util: trivial optimization

diff --git a/src/basic/process-util.c b/src/basic/process-util.c
index 61f188467f8a15e4afe439a6c34f523a065855cc..cff2d2a0348c091c0d33618f3c7a1561c71ea253 100644 (file)
--- a/src/basic/process-util.c
+++ b/src/basic/process-util.c
@@ -181,10 +181,10 @@ int is_kernel_thread(pid_t pid) {
         bool eof;
         FILE *f;
 
-        if (pid == 0)
+        if (pid == 0 || pid == 1) /* pid 1, and we ourselves certainly aren't a kernel thread */
                 return 0;
 
-        assert(pid > 0);
+        assert(pid > 1);
 
         p = procfs_file_alloca(pid, "cmdline");
         f = fopen(p, "re");