We are going to use these functions in following changes.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
 include/linux/ftrace.h | 9 +++++++++
 kernel/trace/ftrace.c  | 7 +++----
 2 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 505b7d3f5641..c0a72fcae1f6 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -82,6 +82,7 @@ static inline void early_trace_init(void) { }
 
 struct module;
 struct ftrace_hash;
+struct ftrace_func_entry;
 
 #if defined(CONFIG_FUNCTION_TRACER) && defined(CONFIG_MODULES) && \
 	defined(CONFIG_DYNAMIC_FTRACE)
@@ -405,6 +406,14 @@ enum ftrace_ops_cmd {
 typedef int (*ftrace_ops_func_t)(struct ftrace_ops *op, enum ftrace_ops_cmd cmd);
 
 #ifdef CONFIG_DYNAMIC_FTRACE
+
+#define FTRACE_HASH_DEFAULT_BITS 10
+
+struct ftrace_hash *alloc_ftrace_hash(int size_bits);
+void free_ftrace_hash(struct ftrace_hash *hash);
+struct ftrace_func_entry *add_hash_entry_direct(struct ftrace_hash *hash,
+						unsigned long ip, unsigned long direct);
+
 /* The hash used to know what functions callbacks trace */
 struct ftrace_ops_hash {
 	struct ftrace_hash __rcu	*notrace_hash;
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 7e3a81bd6f1e..84aee9096a9e 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -68,7 +68,6 @@
 	})
 
 /* hash bits for specific function selection */
-#define FTRACE_HASH_DEFAULT_BITS 10
 #define FTRACE_HASH_MAX_BITS 12
 
 #ifdef CONFIG_DYNAMIC_FTRACE
@@ -1185,7 +1184,7 @@ static void __add_hash_entry(struct ftrace_hash *hash,
 	hash->count++;
 }
 
-static struct ftrace_func_entry *
+struct ftrace_func_entry *
 add_hash_entry_direct(struct ftrace_hash *hash, unsigned long ip, unsigned long direct)
 {
 	struct ftrace_func_entry *entry;
@@ -1265,7 +1264,7 @@ static void clear_ftrace_mod_list(struct list_head *head)
 	mutex_unlock(&ftrace_lock);
 }
 
-static void free_ftrace_hash(struct ftrace_hash *hash)
+void free_ftrace_hash(struct ftrace_hash *hash)
 {
 	if (!hash || hash == EMPTY_HASH)
 		return;
@@ -1305,7 +1304,7 @@ void ftrace_free_filter(struct ftrace_ops *ops)
 }
 EXPORT_SYMBOL_GPL(ftrace_free_filter);
 
-static struct ftrace_hash *alloc_ftrace_hash(int size_bits)
+struct ftrace_hash *alloc_ftrace_hash(int size_bits)
 {
 	struct ftrace_hash *hash;
 	int size;
-- 
2.52.0

On Mon, 15 Dec 2025 22:13:56 +0100
Jiri Olsa <jolsa@kernel.org> wrote:

> index 505b7d3f5641..c0a72fcae1f6 100644
> --- a/include/linux/ftrace.h
> +++ b/include/linux/ftrace.h
> @@ -82,6 +82,7 @@ static inline void early_trace_init(void) { }
>  
>  struct module;
>  struct ftrace_hash;
> +struct ftrace_func_entry;
>  
>  #if defined(CONFIG_FUNCTION_TRACER) && defined(CONFIG_MODULES) && \
>  	defined(CONFIG_DYNAMIC_FTRACE)
> @@ -405,6 +406,14 @@ enum ftrace_ops_cmd {
>  typedef int (*ftrace_ops_func_t)(struct ftrace_ops *op, enum ftrace_ops_cmd cmd);
>  
>  #ifdef CONFIG_DYNAMIC_FTRACE
> +
> +#define FTRACE_HASH_DEFAULT_BITS 10
> +
> +struct ftrace_hash *alloc_ftrace_hash(int size_bits);
> +void free_ftrace_hash(struct ftrace_hash *hash);
> +struct ftrace_func_entry *add_hash_entry_direct(struct ftrace_hash *hash,

As this is no longer static and is exported to other users within the
kernel, it should be renamed to: add_ftrace_hash_entry_direct()
to keep the namespace unique.

-- Steve

> +						unsigned long ip, unsigned long direct);
> +
>  /* The hash used to know what functions callbacks trace */
>  struct ftrace_ops_hash {
>  	struct ftrace_hash __rcu	*notrace_hash;

On Wed, Dec 17, 2025 at 08:07:12PM -0500, Steven Rostedt wrote:
> On Mon, 15 Dec 2025 22:13:56 +0100
> Jiri Olsa <jolsa@kernel.org> wrote:
> 
> > index 505b7d3f5641..c0a72fcae1f6 100644
> > --- a/include/linux/ftrace.h
> > +++ b/include/linux/ftrace.h
> > @@ -82,6 +82,7 @@ static inline void early_trace_init(void) { }
> >  
> >  struct module;
> >  struct ftrace_hash;
> > +struct ftrace_func_entry;
> >  
> >  #if defined(CONFIG_FUNCTION_TRACER) && defined(CONFIG_MODULES) && \
> >  	defined(CONFIG_DYNAMIC_FTRACE)
> > @@ -405,6 +406,14 @@ enum ftrace_ops_cmd {
> >  typedef int (*ftrace_ops_func_t)(struct ftrace_ops *op, enum ftrace_ops_cmd cmd);
> >  
> >  #ifdef CONFIG_DYNAMIC_FTRACE
> > +
> > +#define FTRACE_HASH_DEFAULT_BITS 10
> > +
> > +struct ftrace_hash *alloc_ftrace_hash(int size_bits);
> > +void free_ftrace_hash(struct ftrace_hash *hash);
> > +struct ftrace_func_entry *add_hash_entry_direct(struct ftrace_hash *hash,
> 
> As this is no longer static and is exported to other users within the
> kernel, it should be renamed to: add_ftrace_hash_entry_direct()
> to keep the namespace unique.

ok, will change

jirka

> 
> -- Steve
> 
> > +						unsigned long ip, unsigned long direct);
> > +
> >  /* The hash used to know what functions callbacks trace */
> >  struct ftrace_ops_hash {
> >  	struct ftrace_hash __rcu	*notrace_hash;