Re: uprobe support mix of ftrace and perf

Oleg Nesterov
2018-11-22T14:32:15Z

Hi Masami,

On 11/20, Masami Hiramatsu wrote:
>
> Hello Oleg,
>
> I have a question about the (revert) commit 48212542067a
> ("tracing/uprobes: Revert "Support mix of ftrace and perf""). I found
> this limitation still exists on uprobe events.

Yes...

> Would you have any plan or idea to fix this issue? I thought this revert
> patch was a tentative one, and should be fixed afterwards.

To be honest, I was going to fix this "soon" many years ago, but today I simply
can't recall how this code actually works and what exactly we need to do to
support ftrace/perf at the same time...

I'll try to read this code later, but I can't promise anything :/

Oleg.