cregit-Linux how code gets into the kernel

Release 4.12 include/kvm/arm_pmu.h

Directory: include/kvm
/*
 * Copyright (C) 2015 Linaro Ltd.
 * Author: Shannon Zhao <shannon.zhao@linaro.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __ASM_ARM_KVM_PMU_H

#define __ASM_ARM_KVM_PMU_H

#include <linux/perf_event.h>
#include <asm/perf_event.h>


#define ARMV8_PMU_CYCLE_IDX		(ARMV8_PMU_MAX_COUNTERS - 1)

#ifdef CONFIG_KVM_ARM_PMU


struct kvm_pmc {
	
u8 idx;	/* index into the pmu->pmc array */
	
struct perf_event *perf_event;
	
u64 bitmask;
};


struct kvm_pmu {
	
int irq_num;
	
struct kvm_pmc pmc[ARMV8_PMU_MAX_COUNTERS];
	
bool ready;
	
bool irq_level;
};


#define kvm_arm_pmu_v3_ready(v)		((v)->arch.pmu.ready)

#define kvm_arm_pmu_irq_initialized(v)	((v)->arch.pmu.irq_num >= VGIC_NR_SGIS)
u64 kvm_pmu_get_counter_value(struct kvm_vcpu *vcpu, u64 select_idx);
void kvm_pmu_set_counter_value(struct kvm_vcpu *vcpu, u64 select_idx, u64 val);
u64 kvm_pmu_valid_counter_mask(struct kvm_vcpu *vcpu);
void kvm_pmu_vcpu_reset(struct kvm_vcpu *vcpu);
void kvm_pmu_vcpu_destroy(struct kvm_vcpu *vcpu);
void kvm_pmu_disable_counter(struct kvm_vcpu *vcpu, u64 val);
void kvm_pmu_enable_counter(struct kvm_vcpu *vcpu, u64 val);
void kvm_pmu_overflow_set(struct kvm_vcpu *vcpu, u64 val);
void kvm_pmu_flush_hwstate(struct kvm_vcpu *vcpu);
void kvm_pmu_sync_hwstate(struct kvm_vcpu *vcpu);
bool kvm_pmu_should_notify_user(struct kvm_vcpu *vcpu);
void kvm_pmu_update_run(struct kvm_vcpu *vcpu);
void kvm_pmu_software_increment(struct kvm_vcpu *vcpu, u64 val);
void kvm_pmu_handle_pmcr(struct kvm_vcpu *vcpu, u64 val);
void kvm_pmu_set_counter_event_type(struct kvm_vcpu *vcpu, u64 data,
				    u64 select_idx);
bool kvm_arm_support_pmu_v3(void);
int kvm_arm_pmu_v3_set_attr(struct kvm_vcpu *vcpu,
			    struct kvm_device_attr *attr);
int kvm_arm_pmu_v3_get_attr(struct kvm_vcpu *vcpu,
			    struct kvm_device_attr *attr);
int kvm_arm_pmu_v3_has_attr(struct kvm_vcpu *vcpu,
			    struct kvm_device_attr *attr);
#else

struct kvm_pmu {
};


#define kvm_arm_pmu_v3_ready(v)		(false)

#define kvm_arm_pmu_irq_initialized(v)	(false)

static inline u64 kvm_pmu_get_counter_value(struct kvm_vcpu *vcpu, u64 select_idx) { return 0; }

Contributors

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Shannon Zhao18100.00%1100.00%
Total18100.00%1100.00%


static inline void kvm_pmu_set_counter_value(struct kvm_vcpu *vcpu, u64 select_idx, u64 val) {}

Contributors

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Shannon Zhao17100.00%1100.00%
Total17100.00%1100.00%


static inline u64 kvm_pmu_valid_counter_mask(struct kvm_vcpu *vcpu) { return 0; }

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Shannon Zhao15100.00%1100.00%
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static inline void kvm_pmu_vcpu_reset(struct kvm_vcpu *vcpu) {}

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Shannon Zhao11100.00%1100.00%
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static inline void kvm_pmu_vcpu_destroy(struct kvm_vcpu *vcpu) {}

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Shannon Zhao11100.00%1100.00%
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static inline void kvm_pmu_disable_counter(struct kvm_vcpu *vcpu, u64 val) {}

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Shannon Zhao14100.00%1100.00%
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static inline void kvm_pmu_enable_counter(struct kvm_vcpu *vcpu, u64 val) {}

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Shannon Zhao14100.00%1100.00%
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static inline void kvm_pmu_overflow_set(struct kvm_vcpu *vcpu, u64 val) {}

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PersonTokensPropCommitsCommitProp
Shannon Zhao14100.00%1100.00%
Total14100.00%1100.00%


static inline void kvm_pmu_flush_hwstate(struct kvm_vcpu *vcpu) {}

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Shannon Zhao11100.00%1100.00%
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static inline void kvm_pmu_sync_hwstate(struct kvm_vcpu *vcpu) {}

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Shannon Zhao11100.00%1100.00%
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static inline bool kvm_pmu_should_notify_user(struct kvm_vcpu *vcpu) { return false; }

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static inline void kvm_pmu_update_run(struct kvm_vcpu *vcpu) {}

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Christoffer Dall11100.00%1100.00%
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static inline void kvm_pmu_software_increment(struct kvm_vcpu *vcpu, u64 val) {}

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Shannon Zhao14100.00%1100.00%
Total14100.00%1100.00%


static inline void kvm_pmu_handle_pmcr(struct kvm_vcpu *vcpu, u64 val) {}

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PersonTokensPropCommitsCommitProp
Shannon Zhao14100.00%1100.00%
Total14100.00%1100.00%


static inline void kvm_pmu_set_counter_event_type(struct kvm_vcpu *vcpu, u64 data, u64 select_idx) {}

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Shannon Zhao17100.00%1100.00%
Total17100.00%1100.00%


static inline bool kvm_arm_support_pmu_v3(void) { return false; }

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Shannon Zhao12100.00%1100.00%
Total12100.00%1100.00%


static inline int kvm_arm_pmu_v3_set_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr) { return -ENXIO; }

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Shannon Zhao21100.00%1100.00%
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static inline int kvm_arm_pmu_v3_get_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr) { return -ENXIO; }

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Shannon Zhao21100.00%1100.00%
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static inline int kvm_arm_pmu_v3_has_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr) { return -ENXIO; }

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Shannon Zhao21100.00%1100.00%
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#endif #endif

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Shannon Zhao54492.05%1386.67%
Christoffer Dall447.45%16.67%
Sudeep Holla30.51%16.67%
Total591100.00%15100.00%
Directory: include/kvm
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