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RISCV: KVM: add tracepoints for entry and exit events

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Like other architectures, RISCV KVM also needs to add these event
tracepoints to count the number of times kvm guest entry/exit.

Signed-off-by: Shenlin Liang <liangshenlin@eswincomputing.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Tested-by: Atish Patra <atishp@rivosinc.com>
Link: https://lore.kernel.org/r/20240422080833.8745-2-liangshenlin@eswincomputing.com
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Shenlin Liang
2024-04-22 08:08:32 +00:00
committed by Anup Patel
parent 3385339296
commit 91195a90f1
2 changed files with 74 additions and 0 deletions
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7
arch/riscv/kvm/vcpu.c
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@@ -21,6 +21,9 @@
#include <asm/cacheflush.h>
#include <asm/kvm_vcpu_vector.h>
#define CREATE_TRACE_POINTS
#include "trace.h"
const struct _kvm_stats_desc kvm_vcpu_stats_desc[] = {
KVM_GENERIC_VCPU_STATS(),
STATS_DESC_COUNTER(VCPU, ecall_exit_stat),
@@ -831,6 +834,8 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu)
*/
kvm_riscv_local_tlb_sanitize(vcpu);
trace_kvm_entry(vcpu);
guest_timing_enter_irqoff();
kvm_riscv_vcpu_enter_exit(vcpu);
@@ -869,6 +874,8 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu)
local_irq_enable();
trace_kvm_exit(&trap);
preempt_enable();
kvm_vcpu_srcu_read_lock(vcpu);