Add paravirt preempt print prompt together with steal timer information, so that it is easy to check whether paravirt preempt feature is enabled or not.
Signed-off-by: Bibo Mao <[email protected]> --- arch/loongarch/kernel/paravirt.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/arch/loongarch/kernel/paravirt.c b/arch/loongarch/kernel/paravirt.c index d4163679adc4..ffe1cf284c41 100644 --- a/arch/loongarch/kernel/paravirt.c +++ b/arch/loongarch/kernel/paravirt.c @@ -300,6 +300,7 @@ static struct notifier_block pv_reboot_nb = { int __init pv_time_init(void) { int r; + bool pv_preempted = false; if (!kvm_para_has_feature(KVM_FEATURE_STEAL_TIME)) return 0; @@ -322,8 +323,10 @@ int __init pv_time_init(void) return r; } - if (kvm_para_has_feature(KVM_FEATURE_PREEMPT)) + if (kvm_para_has_feature(KVM_FEATURE_PREEMPT)) { static_branch_enable(&virt_preempt_key); + pv_preempted = true; + } #endif static_call_update(pv_steal_clock, paravt_steal_clock); @@ -334,7 +337,10 @@ int __init pv_time_init(void) static_key_slow_inc(¶virt_steal_rq_enabled); #endif - pr_info("Using paravirt steal-time\n"); + if (pv_preempted) + pr_info("Using paravirt steal-time with preempt hint enabled\n"); + else + pr_info("Using paravirt steal-time with preempt hint disabled\n"); return 0; } -- 2.39.3
