On Wed, May 09, 2018 at 12:05:51PM +0200, Peter Zijlstra wrote: > On Mon, May 07, 2018 at 05:01:34PM -0400, Johannes Weiner wrote: > > + u64 some[NR_PSI_RESOURCES] = { 0, }; > > + u64 full[NR_PSI_RESOURCES] = { 0, }; > > > + some[r] /= max(nonidle_total, 1UL); > > + full[r] /= max(nonidle_total, 1UL); > > That's a bare 64bit divide.. that typically failed to build on 32bit > archs. Ah yes, I'll switch that to do_div(). Thanks