[PATCH 5.10.y 2/4] kallsyms: Make module_kallsyms_on_each_symbol generally available

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From: Jiri Olsa <jolsa@xxxxxxxxxx>

commit 73feb8d5fa3b755bb51077c0aabfb6aa556fd498 upstream.

Making module_kallsyms_on_each_symbol generally available, so it
can be used outside CONFIG_LIVEPATCH option in following changes.

Rather than adding another ifdef option let's make the function
generally available (when CONFIG_KALLSYMS and CONFIG_MODULES
options are defined).

Cc: Christoph Hellwig <hch@xxxxxx>
Acked-by: Song Liu <song@xxxxxxxxxx>
Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20221025134148.3300700-2-jolsa@xxxxxxxxxx
Signed-off-by: Alexei Starovoitov <ast@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Stable-dep-of: 926fe783c8a6 ("tracing/kprobes: Fix symbol counting logic by looking at modules as well")
Signed-off-by: Markus Boehme <markubo@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Stable-dep-of: 329197033bb0 ("tracing/kprobes: Fix symbol counting logic
by looking at modules as well")
Signed-off-by: Sherry Yang <sherry.yang@xxxxxxxxxx>
---
 include/linux/module.h | 9 +++++++++
 kernel/module.c        | 2 --
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/include/linux/module.h b/include/linux/module.h
index a55a40c28568..63fe94e6ae6f 100644
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -875,8 +875,17 @@ static inline bool module_sig_ok(struct module *module)
 }
 #endif	/* CONFIG_MODULE_SIG */
 
+#if defined(CONFIG_MODULES) && defined(CONFIG_KALLSYMS)
 int module_kallsyms_on_each_symbol(int (*fn)(void *, const char *,
 					     struct module *, unsigned long),
 				   void *data);
+#else
+static inline int module_kallsyms_on_each_symbol(int (*fn)(void *, const char *,
+						 struct module *, unsigned long),
+						 void *data)
+{
+	return -EOPNOTSUPP;
+}
+#endif  /* CONFIG_MODULES && CONFIG_KALLSYMS */
 
 #endif /* _LINUX_MODULE_H */
diff --git a/kernel/module.c b/kernel/module.c
index edc7b99cb16f..7f3ba597af6c 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -4444,7 +4444,6 @@ unsigned long module_kallsyms_lookup_name(const char *name)
 	return ret;
 }
 
-#ifdef CONFIG_LIVEPATCH
 int module_kallsyms_on_each_symbol(int (*fn)(void *, const char *,
 					     struct module *, unsigned long),
 				   void *data)
@@ -4475,7 +4474,6 @@ int module_kallsyms_on_each_symbol(int (*fn)(void *, const char *,
 	mutex_unlock(&module_mutex);
 	return ret;
 }
-#endif /* CONFIG_LIVEPATCH */
 #endif /* CONFIG_KALLSYMS */
 
 /* Maximum number of characters written by module_flags() */
-- 
2.46.0





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