Powerpc timer implementation is a copycat version of s390. Now that they removed
the tasklet with commit ea74c0ea1b24a6978a6ebc80ba4dbc7b7848b32d follow this
optimization.
Signed-off-by: Mihai Caraman <mihai.cara...@freescale.com>
Signed-off-by: Bogdan Purcareata <bogdan.purcare...@freescale.com>
---
arch/powerpc/include/asm/kvm_host.h | 1 -
arch/powerpc/include/asm/kvm_ppc.h | 2 +-
arch/powerpc/kvm/book3s.c | 4 +---
arch/powerpc/kvm/booke.c | 4 +---
arch/powerpc/kvm/powerpc.c | 8 +-------
5 files changed, 4 insertions(+), 15 deletions(-)
diff --git a/arch/powerpc/include/asm/kvm_host.h
b/arch/powerpc/include/asm/kvm_host.h
index cc11aed..3502649 100644
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -611,7 +611,6 @@ struct kvm_vcpu_arch {
u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
struct hrtimer dec_timer;
- struct tasklet_struct tasklet;
u64 dec_jiffies;
u64 dec_expires;
unsigned long pending_exceptions;
diff --git a/arch/powerpc/include/asm/kvm_ppc.h
b/arch/powerpc/include/asm/kvm_ppc.h
index fb86a22..1117360 100644
--- a/arch/powerpc/include/asm/kvm_ppc.h
+++ b/arch/powerpc/include/asm/kvm_ppc.h
@@ -89,7 +89,7 @@ extern int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu);
extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu);
extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu);
extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb);
-extern void kvmppc_decrementer_func(unsigned long data);
+extern void kvmppc_decrementer_func(struct kvm_vcpu *vcpu);
extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu);
extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu);
extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu);
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index 1b5adda..f23b6a5 100644
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -718,10 +718,8 @@ int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu
*vcpu,
return -EINVAL;
}
-void kvmppc_decrementer_func(unsigned long data)
+void kvmppc_decrementer_func(struct kvm_vcpu *vcpu)
{
- struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data;
-
kvmppc_core_queue_dec(vcpu);
kvm_vcpu_kick(vcpu);
}
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 831c1b4..a4487f4 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -1782,10 +1782,8 @@ void kvmppc_clr_tsr_bits(struct kvm_vcpu *vcpu, u32
tsr_bits)
update_timer_ints(vcpu);
}
-void kvmppc_decrementer_func(unsigned long data)
+void kvmppc_decrementer_func(struct kvm_vcpu *vcpu)
{
- struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data;
-
if (vcpu->arch.tcr & TCR_ARE) {
vcpu->arch.dec = vcpu->arch.decar;
kvmppc_emulate_dec(vcpu);
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 19d4755..02a6e2d 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -658,7 +658,6 @@ void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu)
{
/* Make sure we're not using the vcpu anymore */
hrtimer_cancel(&vcpu->arch.dec_timer);
- tasklet_kill(&vcpu->arch.tasklet);
kvmppc_remove_vcpu_debugfs(vcpu);
@@ -684,16 +683,12 @@ int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
return kvmppc_core_pending_dec(vcpu);
}
-/*
- * low level hrtimer wake routine. Because this runs in hardirq context
- * we schedule a tasklet to do the real work.
- */
enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer)
{
struct kvm_vcpu *vcpu;
vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer);
- tasklet_schedule(&vcpu->arch.tasklet);
+ kvmppc_decrementer_func(vcpu);
return HRTIMER_NORESTART;
}
@@ -703,7 +698,6 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
int ret;
hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
- tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu);
vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup;
vcpu->arch.dec_expires = ~(u64)0;
--
1.7.11.7
--
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