clang-tidy: Enable more warnings (#39910)

src/basic/process-util.c

@@ -1135,17 +1135,17 @@ bool oom_score_adjust_is_valid(int oa) {
         return oa >= OOM_SCORE_ADJ_MIN && oa <= OOM_SCORE_ADJ_MAX;
 }
 
-unsigned long personality_from_string(const char *p) {
+unsigned long personality_from_string(const char *s) {
         Architecture architecture;
 
-        if (!p)
+        if (!s)
                 return PERSONALITY_INVALID;
 
         /* Parse a personality specifier. We use our own identifiers that indicate specific ABIs, rather than just
          * hints regarding the register size, since we want to keep things open for multiple locally supported ABIs for
          * the same register size. */
 
-        architecture = architecture_from_string(p);
+        architecture = architecture_from_string(s);
         if (architecture < 0)
                 return PERSONALITY_INVALID;
 
@@ -1247,8 +1247,8 @@ bool nice_is_valid(int n) {
         return n >= PRIO_MIN && n < PRIO_MAX;
 }
 
-bool sched_policy_is_valid(int i) {
-        return IN_SET(i, SCHED_OTHER, SCHED_BATCH, SCHED_IDLE, SCHED_FIFO, SCHED_RR, SCHED_EXT);
+bool sched_policy_is_valid(int policy) {
+        return IN_SET(policy, SCHED_OTHER, SCHED_BATCH, SCHED_IDLE, SCHED_FIFO, SCHED_RR, SCHED_EXT);
 }
 
 bool sched_policy_supported(int policy) {