Re: Question about config UPROBES and UPROBE_EVENTS

[Google]

On Mon, 30 Sep 2024 10:06:30 -0400
Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:

> On Mon, 30 Sep 2024 09:33:42 +0800
> Tiezhu Yang <yangtiezhu@xxxxxxxxxxx> wrote:
> 
> > > the CONFIG_UPROBES is disabled by default and make CONFIG_UPROBE_EVENTS
> > > depending on it, the uprobe_events menu is hidden. I don't like this.  
> > 
> > This is somehow like the current status of CONFIG_KPROBES and
> > CONFIG_KPROBE_EVENTS.
> 
> The question is, can uprobes be used without uprobe_events? With the
> current BPF work that I haven't been following, it may be possible now.

uprobe_register/unregister APIs are exposed to the kernel modules,
since systemtap had been introduced this feature.

Thank you,

> 
> If uprobes can be used without uprobe events, like kprobes can be used
> without kprobe events, then I can see having uprobes as a separate config
> menu option. If not, then no, it shouldn't be.
> 
> -- Steve


-- 
Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>