On Wed, Oct 23, 2019 at 04:22:54AM +0100, Mao Wenan wrote: > If KVM=y, it will select SCHEDSTATS, below erros can > be seen: > kernel/sched/stats.h: In function rq_sched_info_arrive: > kernel/sched/stats.h:12:20: error: struct sched_info > has no member named run_delay > rq->rq_sched_info.run_delay += delta; > ^ > kernel/sched/stats.h:13:20: error: struct sched_info > has no member named pcount > rq->rq_sched_info.pcount++; > ^ > kernel/sched/stats.h: In function rq_sched_info_dequeued: > kernel/sched/stats.h:31:20: error: struct sched_info has > no member named run_delay > rq->rq_sched_info.run_delay += delta; > > These are because CONFIG_SCHED_INFO is not set, This patch > is to select SCHED_INFO before SCHEDSTATS. It looks like I didn't spot this because when DEBUG_KERNEL is enabled then KVM selects SCHEDSTATS, which selects SCHED_INFO. Thanks for spotting this. > > Fixes: 8564d6372a7d ("KVM: arm64: Support stolen time reporting via shared structure") > Signed-off-by: Mao Wenan <maowenan@xxxxxxxxxx> Reviewed-by: Steven Price <steven.price@xxxxxxx> > --- > arch/arm64/kvm/Kconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig > index d8b88e4..3c46eac 100644 > --- a/arch/arm64/kvm/Kconfig > +++ b/arch/arm64/kvm/Kconfig > @@ -39,6 +39,7 @@ config KVM > select IRQ_BYPASS_MANAGER > select HAVE_KVM_IRQ_BYPASS > select HAVE_KVM_VCPU_RUN_PID_CHANGE > + select SCHED_INFO > select SCHEDSTATS > ---help--- > Support hosting virtualized guest machines. > -- > 2.7.4 >