Excerpts from Christophe Leroy's message of February 9, 2021 1:10 am: > This series implements C syscall entry/exit for PPC32. It reuses > the work already done for PPC64. > > This series is based on today's merge-test > (b6f72fc05389e3fc694bf5a5fa1bbd33f61879e0) > > In terms on performance we have the following number of cycles on an > 8xx running null_syscall benchmark: > - mainline: 296 cycles > - after patch 4: 283 cycles > - after patch 16: 304 cycles > - after patch 17: 348 cycles > - at the end of the series: 320 cycles > > So in summary, we have a degradation of performance of 8% on null_syscall. > > I think it is not a big degradation, it is worth it.
I guess it's 13% from 283. But it's very nice to use the shared C code. There might be a few more percent speedup in there we can find later. Thanks, Nick
