On Mon, Aug 15, 2022 at 08:35:53AM -0700, Alexei Starovoitov wrote: > On Mon, Aug 15, 2022 at 8:28 AM Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote: > > > > On Mon, Aug 15, 2022 at 08:17:42AM -0700, Alexei Starovoitov wrote: > > > It's hiding a fake function from ftrace, since it's not a function > > > and ftrace infra shouldn't show it tracing logs. > > > In other words it's a _notrace_ function with nop5. > > > > Then make it a notrace function with a nop5 in it. That isn't hard. > > That's exactly what we're trying to do. All the while claiming ftrace is broken while it is not. > Jiri's patch is one way to achieve that. Fairly horrible way. > What is your suggestion? Mailed it already. > Move it from C to asm ? Would be much better than proposed IMO. > Make it naked function with explicit inline asm? Can be made to work but is iffy because the compiler can do horrible things with placing the asm().
