Re: [PATCH v2 6/9] tracing/filters: Skip second character of '&&' and '||' in calc_stack()

[Steven Rostedt]

On Tue, 27 Oct 2026 09:12:43 +0900
"Masami Hiramatsu (Google)" <mhiramat@xxxxxxxxxx> wrote:

> BTW, to check the correct input is encoded correctly, we may need
> in kernel selftest or a feature to dump the interpreted pred after
> "#" line via filter file. Latter one allows us to test it via tracefs
> (ftracetest).

Hmm, I guess we can update the filter file, although I'm a bit nervous
about backward compatibility.

IIRC, the libtracefs does self tests and clears filters. That may be a way
to see if it breaks user space.

-- Steve