diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-07-29 13:55:30 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-07-29 13:55:30 -0700 |
commit | a6408f6cb63ac0958fee7dbce7861ffb540d8a49 (patch) | |
tree | c94a835d343974171951e3b805e6bbbb02852ebc /virt/kvm/arm | |
parent | 1a81a8f2a5918956e214bb718099a89e500e7ec5 (diff) | |
parent | 4fae16dffb812f0e0d98a0b2b0856ca48ca63e6c (diff) |
Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull smp hotplug updates from Thomas Gleixner:
"This is the next part of the hotplug rework.
- Convert all notifiers with a priority assigned
- Convert all CPU_STARTING/DYING notifiers
The final removal of the STARTING/DYING infrastructure will happen
when the merge window closes.
Another 700 hundred line of unpenetrable maze gone :)"
* 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (70 commits)
timers/core: Correct callback order during CPU hot plug
leds/trigger/cpu: Move from CPU_STARTING to ONLINE level
powerpc/numa: Convert to hotplug state machine
arm/perf: Fix hotplug state machine conversion
irqchip/armada: Avoid unused function warnings
ARC/time: Convert to hotplug state machine
clocksource/atlas7: Convert to hotplug state machine
clocksource/armada-370-xp: Convert to hotplug state machine
clocksource/exynos_mct: Convert to hotplug state machine
clocksource/arm_global_timer: Convert to hotplug state machine
rcu: Convert rcutree to hotplug state machine
KVM/arm/arm64/vgic-new: Convert to hotplug state machine
smp/cfd: Convert core to hotplug state machine
x86/x2apic: Convert to CPU hotplug state machine
profile: Convert to hotplug state machine
timers/core: Convert to hotplug state machine
hrtimer: Convert to hotplug state machine
x86/tboot: Convert to hotplug state machine
arm64/armv8 deprecated: Convert to hotplug state machine
hwtracing/coresight-etm4x: Convert to hotplug state machine
...
Diffstat (limited to 'virt/kvm/arm')
-rw-r--r-- | virt/kvm/arm/arch_timer.c | 35 | ||||
-rw-r--r-- | virt/kvm/arm/vgic.c | 39 | ||||
-rw-r--r-- | virt/kvm/arm/vgic/vgic-init.c | 31 |
3 files changed, 28 insertions, 77 deletions
diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c index e2d5b6f988fb..4fde8c7dfcfe 100644 --- a/virt/kvm/arm/arch_timer.c +++ b/virt/kvm/arm/arch_timer.c @@ -405,26 +405,17 @@ u64 kvm_arm_timer_get_reg(struct kvm_vcpu *vcpu, u64 regid) return (u64)-1; } -static int kvm_timer_cpu_notify(struct notifier_block *self, - unsigned long action, void *cpu) +static int kvm_timer_starting_cpu(unsigned int cpu) { - switch (action) { - case CPU_STARTING: - case CPU_STARTING_FROZEN: - kvm_timer_init_interrupt(NULL); - break; - case CPU_DYING: - case CPU_DYING_FROZEN: - disable_percpu_irq(host_vtimer_irq); - break; - } - - return NOTIFY_OK; + kvm_timer_init_interrupt(NULL); + return 0; } -static struct notifier_block kvm_timer_cpu_nb = { - .notifier_call = kvm_timer_cpu_notify, -}; +static int kvm_timer_dying_cpu(unsigned int cpu) +{ + disable_percpu_irq(host_vtimer_irq); + return 0; +} int kvm_timer_hyp_init(void) { @@ -449,12 +440,6 @@ int kvm_timer_hyp_init(void) goto out; } - err = __register_cpu_notifier(&kvm_timer_cpu_nb); - if (err) { - kvm_err("Cannot register timer CPU notifier\n"); - goto out_free; - } - wqueue = create_singlethread_workqueue("kvm_arch_timer"); if (!wqueue) { err = -ENOMEM; @@ -462,8 +447,10 @@ int kvm_timer_hyp_init(void) } kvm_info("virtual timer IRQ%d\n", host_vtimer_irq); - on_each_cpu(kvm_timer_init_interrupt, NULL, 1); + cpuhp_setup_state(CPUHP_AP_KVM_ARM_TIMER_STARTING, + "AP_KVM_ARM_TIMER_STARTING", kvm_timer_starting_cpu, + kvm_timer_dying_cpu); goto out; out_free: free_percpu_irq(host_vtimer_irq, kvm_get_running_vcpus()); diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c index c3bfbb981e73..67cb5e948be2 100644 --- a/virt/kvm/arm/vgic.c +++ b/virt/kvm/arm/vgic.c @@ -2326,32 +2326,18 @@ int vgic_has_attr_regs(const struct vgic_io_range *ranges, phys_addr_t offset) return -ENXIO; } -static void vgic_init_maintenance_interrupt(void *info) +static int vgic_starting_cpu(unsigned int cpu) { enable_percpu_irq(vgic->maint_irq, 0); + return 0; } -static int vgic_cpu_notify(struct notifier_block *self, - unsigned long action, void *cpu) +static int vgic_dying_cpu(unsigned int cpu) { - switch (action) { - case CPU_STARTING: - case CPU_STARTING_FROZEN: - vgic_init_maintenance_interrupt(NULL); - break; - case CPU_DYING: - case CPU_DYING_FROZEN: - disable_percpu_irq(vgic->maint_irq); - break; - } - - return NOTIFY_OK; + disable_percpu_irq(vgic->maint_irq); + return 0; } -static struct notifier_block vgic_cpu_nb = { - .notifier_call = vgic_cpu_notify, -}; - static int kvm_vgic_probe(void) { const struct gic_kvm_info *gic_kvm_info; @@ -2392,19 +2378,10 @@ int kvm_vgic_hyp_init(void) return ret; } - ret = __register_cpu_notifier(&vgic_cpu_nb); - if (ret) { - kvm_err("Cannot register vgic CPU notifier\n"); - goto out_free_irq; - } - - on_each_cpu(vgic_init_maintenance_interrupt, NULL, 1); - + cpuhp_setup_state(CPUHP_AP_KVM_ARM_VGIC_STARTING, + "AP_KVM_ARM_VGIC_STARTING", vgic_starting_cpu, + vgic_dying_cpu); return 0; - -out_free_irq: - free_percpu_irq(vgic->maint_irq, kvm_get_running_vcpus()); - return ret; } int kvm_irq_map_gsi(struct kvm *kvm, diff --git a/virt/kvm/arm/vgic/vgic-init.c b/virt/kvm/arm/vgic/vgic-init.c index a1442f7c9c4d..2c7f0d5a62ea 100644 --- a/virt/kvm/arm/vgic/vgic-init.c +++ b/virt/kvm/arm/vgic/vgic-init.c @@ -353,32 +353,19 @@ out: /* GENERIC PROBE */ -static void vgic_init_maintenance_interrupt(void *info) +static int vgic_init_cpu_starting(unsigned int cpu) { enable_percpu_irq(kvm_vgic_global_state.maint_irq, 0); + return 0; } -static int vgic_cpu_notify(struct notifier_block *self, - unsigned long action, void *cpu) -{ - switch (action) { - case CPU_STARTING: - case CPU_STARTING_FROZEN: - vgic_init_maintenance_interrupt(NULL); - break; - case CPU_DYING: - case CPU_DYING_FROZEN: - disable_percpu_irq(kvm_vgic_global_state.maint_irq); - break; - } - return NOTIFY_OK; +static int vgic_init_cpu_dying(unsigned int cpu) +{ + disable_percpu_irq(kvm_vgic_global_state.maint_irq); + return 0; } -static struct notifier_block vgic_cpu_nb = { - .notifier_call = vgic_cpu_notify, -}; - static irqreturn_t vgic_maintenance_handler(int irq, void *data) { /* @@ -434,14 +421,14 @@ int kvm_vgic_hyp_init(void) return ret; } - ret = __register_cpu_notifier(&vgic_cpu_nb); + ret = cpuhp_setup_state(CPUHP_AP_KVM_ARM_VGIC_INIT_STARTING, + "AP_KVM_ARM_VGIC_INIT_STARTING", + vgic_init_cpu_starting, vgic_init_cpu_dying); if (ret) { kvm_err("Cannot register vgic CPU notifier\n"); goto out_free_irq; } - on_each_cpu(vgic_init_maintenance_interrupt, NULL, 1); - kvm_info("vgic interrupt IRQ%d\n", kvm_vgic_global_state.maint_irq); return 0; |