/arch/powerpc/include/asm/pmc.h

 1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2/*
 3 * pmc.h
 4 * Copyright (C) 2004  David Gibson, IBM Corporation
 5 */
 6#ifndef _POWERPC_PMC_H
 7#define _POWERPC_PMC_H
 8#ifdef __KERNEL__
 9
10#include <asm/ptrace.h>
11
12typedef void (*perf_irq_t)(struct pt_regs *);
13extern perf_irq_t perf_irq;
14
15int reserve_pmc_hardware(perf_irq_t new_perf_irq);
16void release_pmc_hardware(void);
17void ppc_enable_pmcs(void);
18
19#ifdef CONFIG_PPC_BOOK3S_64
20#include <asm/lppaca.h>
21#include <asm/firmware.h>
22
23static inline void ppc_set_pmu_inuse(int inuse)
24{
25#if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_KVM_BOOK3S_HV_POSSIBLE)
26	if (firmware_has_feature(FW_FEATURE_LPAR)) {
27#ifdef CONFIG_PPC_PSERIES
28		get_lppaca()->pmcregs_in_use = inuse;
29#endif
30	}
31#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
32	get_paca()->pmcregs_in_use = inuse;
33#endif
34#endif
35}
36
37extern void power4_enable_pmcs(void);
38
39#else /* CONFIG_PPC64 */
40
41static inline void ppc_set_pmu_inuse(int inuse) { }
42
43#endif
44
45#endif /* __KERNEL__ */
46#endif /* _POWERPC_PMC_H */