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tracepoint: Support iterating tracepoints in a loading module

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Add for_each_tracepoint_in_module() function to iterate tracepoints in
a module. This API is needed for handling tracepoints in a loading
module from tracepoint_module_notifier callback function.
This also update for_each_module_tracepoint() to pass the module to
callback function so that it can find module easily.

Link: https://lore.kernel.org/all/172397778740.286558.15781131277732977643.stgit@devnote2/

Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
This commit is contained in:
Masami Hiramatsu (Google)
2024-08-18 19:43:07 +09:00
parent d5dbf8b48a
commit d4df54f338
2 changed files with 44 additions and 10 deletions
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include/linux/tracepoint.h
+15 -2
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@@ -64,8 +64,13 @@ struct tp_module {
bool trace_module_has_bad_taint(struct module *mod);
extern int register_tracepoint_module_notifier(struct notifier_block *nb);
extern int unregister_tracepoint_module_notifier(struct notifier_block *nb);
void for_each_module_tracepoint(void (*fct)(struct tracepoint *, void *),
void for_each_module_tracepoint(void (*fct)(struct tracepoint *,
struct module *, void *),
void *priv);
void for_each_tracepoint_in_module(struct module *,
void (*fct)(struct tracepoint *,
struct module *, void *),
void *priv);
#else
static inline bool trace_module_has_bad_taint(struct module *mod)
{
@@ -82,10 +87,18 @@ int unregister_tracepoint_module_notifier(struct notifier_block *nb)
return 0;
}
static inline
void for_each_module_tracepoint(void (*fct)(struct tracepoint *, void *),
void for_each_module_tracepoint(void (*fct)(struct tracepoint *,
struct module *, void *),
void *priv)
{
}
static inline
void for_each_tracepoint_in_module(struct module *mod,
void (*fct)(struct tracepoint *,
struct module *, void *),
void *priv)
{
}
#endif /* CONFIG_MODULES */
/*