[PATCH bpf-next 00/17] bpf: tracing_multi link · Jiri Olsa <jolsa@kernel.org> · 2026-02-20
[PATCH bpf-next 01/17] ftrace: Add ftrace_hash_count function · Jiri Olsa <jolsa@kernel.org> · 2026-02-20
[PATCH bpf-next 02/17] bpf: Use mutex lock pool for bpf trampolines · Jiri Olsa <jolsa@kernel.org> · 2026-02-20
Re: [PATCH bpf-next 02/17] bpf: Use mutex lock pool for bpf trampolines · bot+bpf-ci@kernel.org · 2026-02-20
Re: [PATCH bpf-next 02/17] bpf: Use mutex lock pool for bpf trampolines · Jiri Olsa <hidden> · 2026-02-22
Re: [PATCH bpf-next 02/17] bpf: Use mutex lock pool for bpf trampolines · Alexei Starovoitov <hidden> · 2026-02-20
Re: [PATCH bpf-next 02/17] bpf: Use mutex lock pool for bpf trampolines · Jiri Olsa <hidden> · 2026-02-22
Re: [PATCH bpf-next 02/17] bpf: Use mutex lock pool for bpf trampolines · Alexei Starovoitov <hidden> · 2026-02-23
Re: [PATCH bpf-next 02/17] bpf: Use mutex lock pool for bpf trampolines · Jiri Olsa <hidden> · 2026-02-24
Re: [PATCH bpf-next 02/17] bpf: Use mutex lock pool for bpf trampolines · Alexei Starovoitov <hidden> · 2026-02-24
[PATCH bpf-next 03/17] bpf: Add struct bpf_trampoline_ops object · Jiri Olsa <jolsa@kernel.org> · 2026-02-20
[PATCH bpf-next 04/17] bpf: Add struct bpf_tramp_node object · Jiri Olsa <jolsa@kernel.org> · 2026-02-20
Re: [PATCH bpf-next 04/17] bpf: Add struct bpf_tramp_node object · bot+bpf-ci@kernel.org · 2026-02-20
Re: [PATCH bpf-next 04/17] bpf: Add struct bpf_tramp_node object · Jiri Olsa <hidden> · 2026-02-22
Re: [PATCH bpf-next 04/17] bpf: Add struct bpf_tramp_node object · kernel test robot <hidden> · 2026-02-20
Re: [PATCH bpf-next 04/17] bpf: Add struct bpf_tramp_node object · kernel test robot <hidden> · 2026-02-20
Re: [PATCH bpf-next 04/17] bpf: Add struct bpf_tramp_node object · kernel test robot <hidden> · 2026-02-21
[PATCH bpf-next 05/17] bpf: Factor fsession link to use struct bpf_tramp_node · Jiri Olsa <jolsa@kernel.org> · 2026-02-20
[PATCH bpf-next 06/17] bpf: Add multi tracing attach types · Jiri Olsa <jolsa@kernel.org> · 2026-02-20
[PATCH bpf-next 07/17] bpf: Add bpf_trampoline_multi_attach/detach functions · Jiri Olsa <jolsa@kernel.org> · 2026-02-20
Re: [PATCH bpf-next 07/17] bpf: Add bpf_trampoline_multi_attach/detach functions · bot+bpf-ci@kernel.org · 2026-02-20
Re: [PATCH bpf-next 07/17] bpf: Add bpf_trampoline_multi_attach/detach functions · Jiri Olsa <hidden> · 2026-02-22
[PATCH bpf-next 08/17] bpf: Add support for tracing multi link · Jiri Olsa <jolsa@kernel.org> · 2026-02-20
Re: [PATCH bpf-next 08/17] bpf: Add support for tracing multi link · bot+bpf-ci@kernel.org · 2026-02-20
Re: [PATCH bpf-next 08/17] bpf: Add support for tracing multi link · Jiri Olsa <hidden> · 2026-02-22
[PATCH bpf-next 09/17] bpf: Add support for tracing_multi link cookies · Jiri Olsa <jolsa@kernel.org> · 2026-02-20
[PATCH bpf-next 10/17] bpf: Add support for tracing_multi link session · Jiri Olsa <jolsa@kernel.org> · 2026-02-20
Re: [PATCH bpf-next 10/17] bpf: Add support for tracing_multi link session · bot+bpf-ci@kernel.org · 2026-02-20
Re: [PATCH bpf-next 10/17] bpf: Add support for tracing_multi link session · Jiri Olsa <hidden> · 2026-02-22
Re: [PATCH bpf-next 10/17] bpf: Add support for tracing_multi link session · XIAO WU <hidden> · 2026-04-23
Re: [PATCH bpf-next 10/17] bpf: Add support for tracing_multi link session · Jiri Olsa <hidden> · 2026-04-23
[PATCH bpf-next 11/17] libbpf: Add support to create tracing multi link · Jiri Olsa <jolsa@kernel.org> · 2026-02-20
Re: [PATCH bpf-next 11/17] libbpf: Add support to create tracing multi link · bot+bpf-ci@kernel.org · 2026-02-20
Re: [PATCH bpf-next 11/17] libbpf: Add support to create tracing multi link · Jiri Olsa <hidden> · 2026-02-22
[PATCH bpf-next 12/17] selftests/bpf: Add tracing multi skel/pattern/ids attach tests · Jiri Olsa <jolsa@kernel.org> · 2026-02-20
[PATCH bpf-next 13/17] selftests/bpf: Add tracing multi intersect tests · Jiri Olsa <jolsa@kernel.org> · 2026-02-20
[PATCH bpf-next 14/17] selftests/bpf: Add tracing multi cookies test · Jiri Olsa <jolsa@kernel.org> · 2026-02-20
[PATCH bpf-next 15/17] selftests/bpf: Add tracing multi session test · Jiri Olsa <jolsa@kernel.org> · 2026-02-20
[PATCH bpf-next 16/17] selftests/bpf: Add tracing multi attach fails test · Jiri Olsa <jolsa@kernel.org> · 2026-02-20
[PATCH bpf-next 17/17] selftests/bpf: Add tracing multi attach benchmark test · Jiri Olsa <jolsa@kernel.org> · 2026-02-20

STALE148d

[PATCH bpf-next 01/17] ftrace: Add ftrace_hash_count function

From: Jiri Olsa <jolsa@kernel.org>
Date: 2026-02-20 10:07:15
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 | 1 +
 kernel/trace/ftrace.c  | 7 ++++++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 1a4d36fc9085..a1ea6ab29407 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h

@@ -415,6 +415,7 @@ struct ftrace_hash *alloc_ftrace_hash(int size_bits);
 void free_ftrace_hash(struct ftrace_hash *hash);
 struct ftrace_func_entry *add_ftrace_hash_entry_direct(struct ftrace_hash *hash,
 						       unsigned long ip, unsigned long direct);
+unsigned long ftrace_hash_count(struct ftrace_hash *hash);
 
 /* The hash used to know what functions callbacks trace */
 struct ftrace_ops_hash {

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 1ce17c8af409..dd1844f882cd 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

-- 
2.52.0