diff options
| author | Jiri Olsa <jolsa@kernel.org> | 2026-06-06 14:39:26 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-06-07 10:03:00 -0700 |
| commit | e57f13eaab259ece7c9e8d81ba2c40c4f057ca2c (patch) | |
| tree | 0dfa171f80a6af04752a8ee2b17d4623dad274ac | |
| parent | 5b038319be442c620f774e6fc9e9283deeca1c75 (diff) | |
ftrace: Add ftrace_hash_count function
Adding external ftrace_hash_count function so we could get hash
count outside of ftrace object.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20260606123955.345967-2-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
| -rw-r--r-- | include/linux/ftrace.h | 7 | ||||
| -rw-r--r-- | kernel/trace/ftrace.c | 7 |
2 files changed, 13 insertions, 1 deletions
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 |