On Wed, 23 Jul 2025 11:23:29 -0400 Steven Rostedt <[email protected]> wrote:
> On Thu, 24 Jul 2025 00:18:06 +0900 > Masami Hiramatsu (Google) <[email protected]> wrote: > > > > So this will add more work during boot up as it is processed on every > > > event regardless if it has an eval map or not. But this is only needed > > > if CONFIG_DEBUG_INFO_BTF=y and PAHOLE_HAS_BTF_TAG=y is enabled. > > > > Hmm, In this case can we check it in trace_event_update_all()? > > If we need to sanitize more word, it is easier to add a condition > > there. > > If we need to sanitize more words later, then we can open it up to > more. But why do this work when it's not needed. We are going from > calling this function a 100 times to calling it a 1000 times. That's an > order of magnitude, and I'm not sure we want to do that if it's not > needed. OK, then check before calling. > > > > > Or, maybe we can sanitize it while building the kernel as a part > > of post build process. > > Ideally, that would be best, but parsing the elf file isn't trivial. > > I would say let's just add this conditional for now, and then we can > start working on a way to parse all of this at build time. OK, I'll put this in my TODO list ;) Thanks! > > -- Steve > > -- Masami Hiramatsu (Google) <[email protected]>
