From: <kabe@>
Subject: Activate #ifdef FTRACE_MCOUNT_MAX_OFFSET only if defined as nonzero

Revert b39181f7c6 (ftrace: Add FTRACE_MCOUNT_MAX_OFFSET to avoid adding weak function) for 32bit

diff -up ./kernel/trace/ftrace.c.ft ./kernel/trace/ftrace.c
--- ./kernel/trace/ftrace.c.ft	2026-02-01 08:09:53.000000000 +0900
+++ ./kernel/trace/ftrace.c	2026-05-28 20:22:49.220436686 +0900
@@ -4216,7 +4216,7 @@ static void add_trampoline_func(struct s
 		seq_printf(m, " ->%pS", ptr);
 }
 
-#ifdef FTRACE_MCOUNT_MAX_OFFSET
+#if defined(FTRACE_MCOUNT_MAX_OFFSET) && (FTRACE_MCOUNT_MAX_OFFSET)
 /*
  * Weak functions can still have an mcount/fentry that is saved in
  * the __mcount_loc section. These can be detected by having a
@@ -4302,7 +4302,7 @@ static int print_rec(struct seq_file *m,
 		seq_printf(m, " [%s]", modname);
 	return ret == NULL ? -1 : 0;
 }
-#else
+#else /* FTRACE_MCOUNT_MAX_OFFSET */
 static inline int test_for_valid_rec(struct dyn_ftrace *rec)
 {
 	return 1;
@@ -4313,7 +4313,7 @@ static inline int print_rec(struct seq_f
 	seq_printf(m, "%ps", (void *)ip);
 	return 0;
 }
-#endif
+#endif /* FTRACE_MCOUNT_MAX_OFFSET */
 
 static int t_show(struct seq_file *m, void *v)
 {
@@ -4728,7 +4728,7 @@ add_rec_by_index(struct ftrace_hash *has
 	return 0;
 }
 
-#ifdef FTRACE_MCOUNT_MAX_OFFSET
+#if defined(FTRACE_MCOUNT_MAX_OFFSET) && (FTRACE_MCOUNT_MAX_OFFSET)
 static int lookup_ip(unsigned long ip, char **modname, char *str)
 {
 	unsigned long offset;