diff options
| author | Masami Hiramatsu <mhiramat@kernel.org> | 2020-01-11 01:05:42 +0900 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2020-01-13 13:19:41 -0500 |
| commit | d8d4c6d0e79c418f8c63f3c82429b1462f196155 (patch) | |
| tree | 92e927de42b4609dc47bd37c8cea59c53695cb6d /kernel/trace/trace_kprobe.c | |
| parent | 8cfcf15503f607e9597de19afeaa621897ae397e (diff) | |
tracing: kprobes: Register to dynevent earlier stage
Register kprobe event to dynevent in subsys_initcall level.
This will allow kernel to register new kprobe events in
fs_initcall level via trace_run_command.
Link: http://lkml.kernel.org/r/157867234213.17873.18039000024374948737.stgit@devnote2
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_kprobe.c')
| -rw-r--r-- | kernel/trace/trace_kprobe.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c index 33a6a661904b..8113d6aa7bc5 100644 --- a/kernel/trace/trace_kprobe.c +++ b/kernel/trace/trace_kprobe.c @@ -1685,11 +1685,12 @@ static __init void setup_boot_kprobe_events(void) enable_boot_kprobe_events(); } -/* Make a tracefs interface for controlling probe points */ -static __init int init_kprobe_trace(void) +/* + * Register dynevent at subsys_initcall. This allows kernel to setup kprobe + * events in fs_initcall without tracefs. + */ +static __init int init_kprobe_trace_early(void) { - struct dentry *d_tracer; - struct dentry *entry; int ret; ret = dyn_event_register(&trace_kprobe_ops); @@ -1699,6 +1700,16 @@ static __init int init_kprobe_trace(void) if (register_module_notifier(&trace_kprobe_module_nb)) return -EINVAL; + return 0; +} +subsys_initcall(init_kprobe_trace_early); + +/* Make a tracefs interface for controlling probe points */ +static __init int init_kprobe_trace(void) +{ + struct dentry *d_tracer; + struct dentry *entry; + d_tracer = tracing_init_dentry(); if (IS_ERR(d_tracer)) return 0; |