Re: [PATCHv5 bpf-next 3/9] ftrace: Export some of hash related functions
From: Steven Rostedt <rostedt@kernel.org>
Date: 2025-12-18 01:07:17
Also in:
bpf, linux-arm-kernel, lkml
On Mon, 15 Dec 2025 22:13:56 +0100 Jiri Olsa [off-list ref] wrote:
quoted hunk ↗ jump to hunk
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;