On Wed, Oct 26, 2016 at 10:54:16PM +0200, Pavel Machek wrote: > Hi! > > I'd like to get an interrupt every million cache misses... to do a > printk() or something like that. As far as I can tell, modern hardware > should allow me to do that. AFAICT performance events subsystem can do > something like that, but I can't figure out where the code is / what I > should call. > > Can someone help?
Can you go back one step and explain why you would want this? What use is a printk() on every 1e6-th cache miss. That is, why doesn't: $ perf record -e cache-misses -c 1000000 -a -- sleep 5 suffice?
