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/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef __ARM64_KVM_HYP_NVHE_TRACE_H
#define __ARM64_KVM_HYP_NVHE_TRACE_H
#include <linux/trace_remote_event.h>
#include <asm/kvm_hyptrace.h>
static inline pid_t __tracing_get_vcpu_pid(struct kvm_cpu_context *host_ctxt)
{
struct kvm_vcpu *vcpu;
if (!host_ctxt)
host_ctxt = host_data_ptr(host_ctxt);
vcpu = host_ctxt->__hyp_running_vcpu;
return vcpu ? vcpu->arch.pid : 0;
}
#define HE_PROTO(__args...) __args
#define HE_ASSIGN(__args...) __args
#define HE_STRUCT RE_STRUCT
#define he_field re_field
#ifdef CONFIG_NVHE_EL2_TRACING
#define HYP_EVENT(__name, __proto, __struct, __assign, __printk) \
REMOTE_EVENT_FORMAT(__name, __struct); \
extern struct hyp_event_id hyp_event_id_##__name; \
static __always_inline void trace_##__name(__proto) \
{ \
struct remote_event_format_##__name *__entry; \
size_t length = sizeof(*__entry); \
\
if (!atomic_read(&hyp_event_id_##__name.enabled)) \
return; \
__entry = tracing_reserve_entry(length); \
if (!__entry) \
return; \
__entry->hdr.id = hyp_event_id_##__name.id; \
__assign \
tracing_commit_entry(); \
}
void *tracing_reserve_entry(unsigned long length);
void tracing_commit_entry(void);
int __tracing_load(unsigned long desc_va, size_t desc_size);
void __tracing_unload(void);
int __tracing_enable(bool enable);
int __tracing_swap_reader(unsigned int cpu);
void __tracing_update_clock(u32 mult, u32 shift, u64 epoch_ns, u64 epoch_cyc);
int __tracing_reset(unsigned int cpu);
int __tracing_enable_event(unsigned short id, bool enable);
#else
static inline void *tracing_reserve_entry(unsigned long length) { return NULL; }
static inline void tracing_commit_entry(void) { }
#define HYP_EVENT(__name, __proto, __struct, __assign, __printk) \
static inline void trace_##__name(__proto) {}
static inline int __tracing_load(unsigned long desc_va, size_t desc_size) { return -ENODEV; }
static inline void __tracing_unload(void) { }
static inline int __tracing_enable(bool enable) { return -ENODEV; }
static inline int __tracing_swap_reader(unsigned int cpu) { return -ENODEV; }
static inline void __tracing_update_clock(u32 mult, u32 shift, u64 epoch_ns, u64 epoch_cyc) { }
static inline int __tracing_reset(unsigned int cpu) { return -ENODEV; }
static inline int __tracing_enable_event(unsigned short id, bool enable) { return -ENODEV; }
#endif
#endif
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