On Wed, Jan 29, 2020 at 3:16 PM Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote: > > Evan, > > Evan Green <evgreen@xxxxxxxxxxxx> writes: > > On Wed, Jan 29, 2020 at 1:01 PM Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote: > > > >> Could you please add some instrumentation to see how often this stuff > >> actually triggers spurious interrupts? > > > > In about 10 minutes of this script running, I got 142 hits. My script > > can toggle the HT cpus on and off about twice per second. > > Here's my diff (sorry it's mangled by gmail). If you're looking for > > something else, let me know, or I can run a patch. > > > No, that's good data. Your testing is hiting the critical path and as > you did not complain about negative side effects it seems to hold up to > the expectations. I'm going to convert this to real patch with a > proper changelog tomorrow. > > Thanks for your help! Sounds good, please CC me on it and I'll be sure to test the final result as well. -Evan
