diff options
| author |   Song Liu <song@kernel.org> | 2022-07-19 17:21:23 -0700 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2022-07-22 22:04:24 +0200 |
| commit | f96f644ab97abeed3f7007c953836a574ce928cc (patch) | |
| tree | 7253962a390954e8b9139e84a387a32655181e55 /include/linux/ftrace.h | |
| parent | bpf/selftests: Fix couldn't retrieve pinned program in xdp veth test (diff) | |
| download | linux-dev-f96f644ab97abeed3f7007c953836a574ce928cc.tar.xz linux-dev-f96f644ab97abeed3f7007c953836a574ce928cc.zip | |
ftrace: Add modify_ftrace_direct_multi_nolock
This is similar to modify_ftrace_direct_multi, but does not acquire
direct_mutex. This is useful when direct_mutex is already locked by the
user.
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Link: https://lore.kernel.org/bpf/20220720002126.803253-2-song@kernel.org
Diffstat (limited to 'include/linux/ftrace.h')
| -rw-r--r-- | include/linux/ftrace.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index 979f6bfa2c25..acb35243ce5d 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -340,6 +340,7 @@ unsigned long ftrace_find_rec_direct(unsigned long ip); int register_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr); int unregister_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr); int modify_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr); +int modify_ftrace_direct_multi_nolock(struct ftrace_ops *ops, unsigned long addr); #else struct ftrace_ops; @@ -384,6 +385,10 @@ static inline int modify_ftrace_direct_multi(struct ftrace_ops *ops, unsigned lo { return -ENODEV; } +static inline int modify_ftrace_direct_multi_nolock(struct ftrace_ops *ops, unsigned long addr) +{ + return -ENODEV; +} #endif /* CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS */ #ifndef CONFIG_HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS |