systemd: merge branch systemd into master

shared/systemd/src/basic/process-util.h

@@ -12,6 +12,7 @@
 #include <sys/resource.h>
 #include <sys/types.h>
 
+#include "alloc-util.h"
 #include "format-util.h"
 #include "ioprio.h"
 #include "macro.h"
@@ -68,6 +69,7 @@ int getenv_for_pid(pid_t pid, const char *field, char **_value);
 
 bool pid_is_alive(pid_t pid);
 bool pid_is_unwaited(pid_t pid);
+int pid_is_my_child(pid_t pid);
 int pid_from_same_root_fs(pid_t pid);
 
 bool is_main_thread(void);
@@ -194,3 +196,5 @@ assert_cc(TASKS_MAX <= (unsigned long) PID_T_MAX)
                 (pid) = 0;                      \
                 _pid_;                          \
         })
+
+int cpus_in_affinity_mask(void);