arch/riscv/kvm/trace.h

Source file repositories/reference/linux-study-clean/arch/riscv/kvm/trace.h

File Facts

System
Linux kernel
Corpus path
arch/riscv/kvm/trace.h
Extension
.h
Size
1392 bytes
Lines
68
Domain
Architecture Layer
Bucket
arch/riscv
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0
/*
 * Tracepoints for RISC-V KVM
 *
 * Copyright 2024 Beijing ESWIN Computing Technology Co., Ltd.
 *
 */
#if !defined(_TRACE_KVM_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_KVM_H

#include <linux/tracepoint.h>

#undef TRACE_SYSTEM
#define TRACE_SYSTEM kvm

TRACE_EVENT(kvm_entry,
	TP_PROTO(struct kvm_vcpu *vcpu),
	TP_ARGS(vcpu),

	TP_STRUCT__entry(
		__field(unsigned long, pc)
	),

	TP_fast_assign(
		__entry->pc	= vcpu->arch.guest_context.sepc;
	),

	TP_printk("PC: 0x016%lx", __entry->pc)
);

TRACE_EVENT(kvm_exit,
	TP_PROTO(struct kvm_cpu_trap *trap),
	TP_ARGS(trap),

	TP_STRUCT__entry(
		__field(unsigned long, sepc)
		__field(unsigned long, scause)
		__field(unsigned long, stval)
		__field(unsigned long, htval)
		__field(unsigned long, htinst)
	),

	TP_fast_assign(
		__entry->sepc		= trap->sepc;
		__entry->scause		= trap->scause;
		__entry->stval		= trap->stval;
		__entry->htval		= trap->htval;
		__entry->htinst		= trap->htinst;
	),

	TP_printk("SEPC:0x%lx, SCAUSE:0x%lx, STVAL:0x%lx, HTVAL:0x%lx, HTINST:0x%lx",
		__entry->sepc,
		__entry->scause,
		__entry->stval,
		__entry->htval,
		__entry->htinst)
);

#endif /* _TRACE_RSICV_KVM_H */

#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_FILE trace

/* This part must be outside protection */
#include <trace/define_trace.h>

Annotation

Implementation Notes