[PATCHv8 bpf-next 01/29] ftrace: Add ftrace_hash_count function
From: Jiri Olsa <jolsa@kernel.org>
Date: 2026-06-06 12:40:11
Also in:
bpf
Subsystem:
function hooks (ftrace), the rest, tracing · Maintainers:
Steven Rostedt, Masami Hiramatsu, Linus Torvalds
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 | 7 +++++++ kernel/trace/ftrace.c | 7 ++++++- 2 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 28b30c6f1031..02c24bf766ce 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)
@@ -590,6 +592,11 @@ static inline int update_ftrace_direct_mod(struct ftrace_ops *ops, struct ftrace return -ENODEV; } +static inline unsigned long ftrace_hash_count(struct ftrace_hash *hash) +{ + return 0; +} + /* * This must be implemented by the architecture. * It is the way the ftrace direct_ops helper, when called
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