tracing: kprobes: Register to dynevent earlier stage (d8d4c6d0) · Commits · 戴 / test

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:

kernel/trace/trace_kprobe.c

+15 −4

Original line number	Diff line number	Diff line
		@@ -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;