diff options
| author | Jiri Olsa <jolsa@kernel.org> | 2025-12-30 15:50:05 +0100 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2026-01-28 11:44:48 -0800 |
| commit | 05dc5e9c1fe156fd9dddc4c2f81e8fc6c7e50eb5 (patch) | |
| tree | ee389576f04b6382c2d1b42c755020d2d4f81c1e /include/linux | |
| parent | 0e860d07c29d70205d5ad48456ac7a133ccfb293 (diff) | |
ftrace: Add update_ftrace_direct_add function
Adding update_ftrace_direct_add function that adds all entries
(ip -> addr) provided in hash argument to direct ftrace ops
and updates its attachments.
The difference to current register_ftrace_direct is
- hash argument that allows to register multiple ip -> direct
entries at once
- we can call update_ftrace_direct_add multiple times on the
same ftrace_ops object, becase after first registration with
register_ftrace_function_nolock, it uses ftrace_update_ops to
update the ftrace_ops object
This change will allow us to have simple ftrace_ops for all bpf
direct interface users in following changes.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Link: https://lore.kernel.org/bpf/20251230145010.103439-5-jolsa@kernel.org
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/ftrace.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index a77b57a4aba2..43a6cfaf5aae 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -543,6 +543,8 @@ int unregister_ftrace_direct(struct ftrace_ops *ops, unsigned long addr, int modify_ftrace_direct(struct ftrace_ops *ops, unsigned long addr); int modify_ftrace_direct_nolock(struct ftrace_ops *ops, unsigned long addr); +int update_ftrace_direct_add(struct ftrace_ops *ops, struct ftrace_hash *hash); + void ftrace_stub_direct_tramp(void); #else @@ -569,6 +571,11 @@ static inline int modify_ftrace_direct_nolock(struct ftrace_ops *ops, unsigned l return -ENODEV; } +static inline int update_ftrace_direct_add(struct ftrace_ops *ops, struct ftrace_hash *hash) +{ + return -ENODEV; +} + /* * This must be implemented by the architecture. * It is the way the ftrace direct_ops helper, when called |