[PATCHv6 bpf-next 01/29] ftrace: Add ftrace_hash_count function

[Jiri Olsa <jolsa@kernel.org>]

Adding external ftrace_hash_count function so we could get hash
count outside of ftrace object.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
 include/linux/ftrace.h | 2 ++
 kernel/trace/ftrace.c  | 7 ++++++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 28b30c6f1031..282da661f131 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -551,6 +551,8 @@ int update_ftrace_direct_mod(struct ftrace_ops *ops, struct ftrace_hash *hash, b
 
 void ftrace_stub_direct_tramp(void);
 
+unsigned long ftrace_hash_count(struct ftrace_hash *hash);
+
 #else
 struct ftrace_ops;
 static inline unsigned long ftrace_find_rec_direct(unsigned long ip)
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index b2611de3f594..57ab01fd00bd 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -6288,11 +6288,16 @@ int modify_ftrace_direct(struct ftrace_ops *ops, unsigned long addr)
 }
 EXPORT_SYMBOL_GPL(modify_ftrace_direct);
 
-static unsigned long hash_count(struct ftrace_hash *hash)
+static inline unsigned long hash_count(struct ftrace_hash *hash)
 {
 	return hash ? hash->count : 0;
 }
 
+unsigned long ftrace_hash_count(struct ftrace_hash *hash)
+{
+	return hash_count(hash);
+}
+
 /**
  * hash_add - adds two struct ftrace_hash and returns the result
  * @a: struct ftrace_hash object
-- 
2.54.0