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 12 typedef void (*perf_irq_t)(struct pt_regs *); 13 extern perf_irq_t perf_irq; 14 15 int reserve_pmc_hardware(perf_irq_t new_perf_irq); 16 void release_pmc_hardware(void); 17 void ppc_enable_pmcs(void); 18 19 #ifdef CONFIG_PPC_BOOK3S_64 20 #include <asm/lppaca.h> 21 #include <asm/firmware.h> 22 23 static 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 37 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 38 static inline int ppc_get_pmu_inuse(void) 39 { 40 return get_paca()->pmcregs_in_use; 41 } 42 #endif 43 44 extern void power4_enable_pmcs(void); 45 46 #else /* CONFIG_PPC64 */ 47 48 static inline void ppc_set_pmu_inuse(int inuse) { } 49 50 #endif 51 52 #endif /* __KERNEL__ */ 53 #endif /* _POWERPC_PMC_H */ 54