1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2003,2004 Joseph Koshy 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef _PMC_H_ 30 #define _PMC_H_ 31 32 #include <sys/types.h> 33 #include <sys/pmc.h> 34 35 /* 36 * Driver statistics. 37 */ 38 struct pmc_driverstats { 39 unsigned int pm_intr_ignored; /* #interrupts ignored */ 40 unsigned int pm_intr_processed; /* #interrupts processed */ 41 unsigned int pm_intr_bufferfull; /* #interrupts with ENOSPC */ 42 unsigned int pm_syscalls; /* #syscalls */ 43 unsigned int pm_syscall_errors; /* #syscalls with errors */ 44 unsigned int pm_buffer_requests; /* #buffer requests */ 45 unsigned int pm_buffer_requests_failed; /* #failed buffer requests */ 46 unsigned int pm_log_sweeps; /* #sample buffer processing 47 passes */ 48 }; 49 50 /* 51 * CPU information. 52 */ 53 struct pmc_cpuinfo { 54 enum pmc_cputype pm_cputype; /* the kind of CPU */ 55 uint32_t pm_ncpu; /* number of CPUs */ 56 uint32_t pm_npmc; /* #PMCs per CPU */ 57 uint32_t pm_nclass; /* #classes of PMCs */ 58 struct pmc_classinfo pm_classes[PMC_CLASS_MAX]; 59 }; 60 61 /* 62 * Current PMC state. 63 */ 64 struct pmc_pmcinfo { 65 int32_t pm_cpu; /* CPU number */ 66 struct pmc_info pm_pmcs[]; /* NPMC structs */ 67 }; 68 69 /* 70 * Prototypes 71 */ 72 73 __BEGIN_DECLS 74 int pmc_allocate(const char *_ctrspec, enum pmc_mode _mode, uint32_t _flags, 75 int _cpu, pmc_id_t *_pmcid, uint64_t count); 76 int pmc_attach(pmc_id_t _pmcid, pid_t _pid); 77 int pmc_capabilities(pmc_id_t _pmc, uint32_t *_caps); 78 int pmc_configure_logfile(int _fd); 79 int pmc_flush_logfile(void); 80 int pmc_close_logfile(void); 81 int pmc_detach(pmc_id_t _pmcid, pid_t _pid); 82 int pmc_disable(int _cpu, int _pmc); 83 int pmc_enable(int _cpu, int _pmc); 84 int pmc_get_driver_stats(struct pmc_driverstats *_gms); 85 int pmc_get_msr(pmc_id_t _pmc, uint32_t *_msr); 86 int pmc_init(void); 87 int pmc_read(pmc_id_t _pmc, pmc_value_t *_value); 88 int pmc_release(pmc_id_t _pmc); 89 int pmc_rw(pmc_id_t _pmc, pmc_value_t _newvalue, pmc_value_t *_oldvalue); 90 int pmc_set(pmc_id_t _pmc, pmc_value_t _value); 91 int pmc_start(pmc_id_t _pmc); 92 int pmc_stop(pmc_id_t _pmc); 93 int pmc_width(pmc_id_t _pmc, uint32_t *_width); 94 int pmc_write(pmc_id_t _pmc, pmc_value_t _value); 95 int pmc_writelog(uint32_t _udata); 96 97 int pmc_ncpu(void); 98 int pmc_npmc(int _cpu); 99 int pmc_cpuinfo(const struct pmc_cpuinfo **_cpu_info); 100 int pmc_pmcinfo(int _cpu, struct pmc_pmcinfo **_pmc_info); 101 102 const char *pmc_name_of_capability(enum pmc_caps _c); 103 const char *pmc_name_of_class(enum pmc_class _pc); 104 const char *pmc_name_of_cputype(enum pmc_cputype _cp); 105 const char *pmc_name_of_disposition(enum pmc_disp _pd); 106 const char *pmc_name_of_event(enum pmc_event _pe); 107 const char *pmc_name_of_mode(enum pmc_mode _pm); 108 const char *pmc_name_of_state(enum pmc_state _ps); 109 110 int pmc_event_names_of_class(enum pmc_class _cl, const char ***_eventnames, 111 int *_nevents); 112 113 int pmc_pmu_enabled(void); 114 void pmc_pmu_print_counters(const char *); 115 void pmc_pmu_print_counter_desc(const char *); 116 void pmc_pmu_print_counter_desc_long(const char *); 117 void pmc_pmu_print_counter_full(const char *); 118 uint64_t pmc_pmu_sample_rate_get(const char *); 119 int pmc_pmu_pmcallocate(const char *, struct pmc_op_pmcallocate *); 120 const char *pmc_pmu_event_get_by_idx(const char *, int idx); 121 int pmc_pmu_idx_get_by_event(const char*, const char *); 122 __END_DECLS 123 124 #endif 125