forked from Minki/linux
04fe472615
Here we plan to support virtual PMU for guest by full software emulation, so define some basic structs and functions preparing for futher steps. Define struct kvm_pmc for performance monitor counter and struct kvm_pmu for performance monitor unit for each vcpu. According to ARMv8 spec, the PMU contains at most 32(ARMV8_PMU_MAX_COUNTERS) counters. Since this only supports ARM64 (or PMUv3), add a separate config symbol for it. Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Reviewed-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
43 lines
1.0 KiB
C
43 lines
1.0 KiB
C
/*
|
|
* 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
|
|
|
|
#ifdef CONFIG_KVM_ARM_PMU
|
|
|
|
#include <linux/perf_event.h>
|
|
#include <asm/perf_event.h>
|
|
|
|
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;
|
|
};
|
|
#else
|
|
struct kvm_pmu {
|
|
};
|
|
#endif
|
|
|
|
#endif
|