Le 04/10/2022 à 08:33, Nicholas Piggin a écrit : > Doesn't seem to be much more involved in adding context tracking and > generic virt cpu accounting support for 32-bit, which is all that's > left to support NO_HZ_FULL. > > I tested this with e5500 SMP kernel with isolated and nohz CPU, and > it seems to be doing the right thing -- periodic tick is stopped on > the nohz CPUs when they are running in userspace. > > Context tracking warnings should catch quite quickly if we got > something wrong there (with the force context tracking option). I > don't have a 32-bit KVM environment to test so that might have some > issues but it should be quite easy to fix if it can be tested. > > I assume the virt cpu accounting gen option removal is okay, but not > exactly sure what to look for in terms of possible problems, so we'll > see what comments that gets back.
I'm having hard time finding the link between patch 1 and patch 2/3. Christophe > > Thanks, > Nick > > Nicholas Piggin (3): > powerpc/32: Implement HAVE_CONTEXT_TRACKING_USER support > powerpc: remove the last remnants of cputime_t > Remove HAVE_VIRT_CPU_ACCOUNTING_GEN option > > arch/Kconfig | 11 ----------- > arch/arm/Kconfig | 1 - > arch/csky/Kconfig | 1 - > arch/loongarch/Kconfig | 1 - > arch/mips/Kconfig | 1 - > arch/powerpc/Kconfig | 2 +- > arch/powerpc/include/asm/cputime.h | 17 +---------------- > arch/powerpc/include/asm/interrupt.h | 21 ++++++--------------- > arch/powerpc/kernel/time.c | 23 ++--------------------- > arch/xtensa/Kconfig | 1 - > init/Kconfig | 1 - > kernel/time/Kconfig | 2 -- > 12 files changed, 10 insertions(+), 72 deletions(-) >
