On Wed, 22 Oct 2014, Masami Hiramatsu wrote: > > Add a function that allows external users (such as live patching > > mechanisms) to check whether a given function (identified by symbol name) > > has a kprobe installed in it. > > Actually, we've already exported the list of kprobes with probe points > (symbols) via debugfs. Please check /sys/kernel/debug/kprobes/list :)
Yes, I know, and kprobe_is_function_probed() is performing very similar thing that show_kprobe_addr() is doing. But we'd like to be able to check this from within a kernel module (the patch module) and issue WARN(). Otherwise we'll need to have a machinery in userspace before insmod which will look up the functions in the module and compare them to the debufs-provided interface. Also, I don't think we want to be dependent on debugfs being mounted and discoverable, etc ... Thanks Masami, -- Jiri Kosina SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
