diff --git a/src/basic/random-util.c b/src/basic/random-util.c
index 98bcc7444c5..9a7d3480c03 100644
--- a/src/basic/random-util.c
+++ b/src/basic/random-util.c
@@ -26,6 +26,7 @@
 #include "missing_syscall.h"
 #include "missing_threads.h"
 #include "parse-util.h"
+#include "process-util.h"
 #include "random-util.h"
 #include "sha256.h"
 #include "time-util.h"
@@ -48,7 +49,7 @@ static void fallback_random_bytes(void *p, size_t n) {
                 .call_id = fallback_counter++,
                 .stamp_mono = now(CLOCK_MONOTONIC),
                 .stamp_real = now(CLOCK_REALTIME),
-                .pid = getpid(),
+                .pid = getpid_cached(),
                 .tid = gettid(),
         };
 
diff --git a/src/libsystemd/sd-event/test-event.c b/src/libsystemd/sd-event/test-event.c
index 50b6a793ce2..7eb8fa10fcd 100644
--- a/src/libsystemd/sd-event/test-event.c
+++ b/src/libsystemd/sd-event/test-event.c
@@ -122,7 +122,7 @@ static int signal_handler(sd_event_source *s, const struct signalfd_siginfo *si,
         zero(plain_si);
         plain_si.si_signo = SIGUSR2;
         plain_si.si_code = SI_QUEUE;
-        plain_si.si_pid = getpid();
+        plain_si.si_pid = getpid_cached();
         plain_si.si_uid = getuid();
         plain_si.si_value.sival_int = 4711;
 
diff --git a/src/libsystemd/sd-journal/journal-send.c b/src/libsystemd/sd-journal/journal-send.c
index d3e45756751..da035a3a783 100644
--- a/src/libsystemd/sd-journal/journal-send.c
+++ b/src/libsystemd/sd-journal/journal-send.c
@@ -22,6 +22,7 @@
 #include "journal-send.h"
 #include "memfd-util.h"
 #include "missing_syscall.h"
+#include "process-util.h"
 #include "socket-util.h"
 #include "stdio-util.h"
 #include "string-util.h"
@@ -85,7 +86,7 @@ void close_journal_fd(void) {
         if (!RUNNING_ON_VALGRIND)
                 return;
 
-        if (getpid() != gettid())
+        if (getpid_cached() != gettid())
                 return;
 
         if (fd_plus_one <= 0)
diff --git a/src/notify/notify.c b/src/notify/notify.c
index f30790bc70b..675fbda752a 100644
--- a/src/notify/notify.c
+++ b/src/notify/notify.c
@@ -18,6 +18,7 @@
 #include "main-func.h"
 #include "parse-util.h"
 #include "pretty-print.h"
+#include "process-util.h"
 #include "string-util.h"
 #include "strv.h"
 #include "terminal-util.h"
@@ -170,11 +171,11 @@ static int parse_argv(int argc, char *argv[]) {
                                                                * manager's PID (which might be distinct from
                                                                * 1, if we are a --user instance), that'd just
                                                                * be confusing for the service manager */
-                                        arg_pid = getpid();
+                                        arg_pid = getpid_cached();
                         } else if (streq(optarg, "parent"))
                                 arg_pid = getppid();
                         else if (streq(optarg, "self"))
-                                arg_pid = getpid();
+                                arg_pid = getpid_cached();
                         else {
                                 r = parse_pid(optarg, &arg_pid);
                                 if (r < 0)
diff --git a/src/nspawn/nspawn.c b/src/nspawn/nspawn.c
index ab61184d9f9..97a2c386e6b 100644
--- a/src/nspawn/nspawn.c
+++ b/src/nspawn/nspawn.c
@@ -5257,7 +5257,7 @@ static int run_container(
                 if (r == 0) {
                         _cleanup_close_ int parent_netns_fd = -EBADF;
 
-                        r = namespace_open(getpid(), NULL, NULL, &parent_netns_fd, NULL, NULL);
+                        r = namespace_open(getpid_cached(), NULL, NULL, &parent_netns_fd, NULL, NULL);
                         if (r < 0) {
                                 log_error_errno(r, "Failed to open parent network namespace: %m");
                                 _exit(EXIT_FAILURE);
diff --git a/src/udev/udevd.c b/src/udev/udevd.c
index cf00576cfbe..8cf35973385 100644
--- a/src/udev/udevd.c
+++ b/src/udev/udevd.c
@@ -818,7 +818,7 @@ static int worker_spawn(Manager *manager, Event *event) {
                 return log_error_errno(r, "Failed to fork() worker: %m");
         }
         if (r == 0) {
-                DEVICE_TRACE_POINT(worker_spawned, event->dev, getpid());
+                DEVICE_TRACE_POINT(worker_spawned, event->dev, getpid_cached());
 
                 /* Worker process */
                 r = worker_main(manager, worker_monitor, sd_device_ref(event->dev));