623 lines
16 KiB
C
623 lines
16 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2018, Matthew Macy
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*
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*/
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#include <sys/types.h>
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#include <sys/errno.h>
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#include <sys/sysctl.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <limits.h>
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#include <string.h>
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#include <pmc.h>
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#include <pmclog.h>
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#include <assert.h>
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#include <libpmcstat.h>
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#include "pmu-events/pmu-events.h"
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#if defined(__amd64__) || defined(__i386__)
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struct pmu_alias {
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const char *pa_alias;
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const char *pa_name;
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};
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typedef enum {
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PMU_INVALID,
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PMU_INTEL,
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PMU_AMD,
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} pmu_mfr_t;
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static struct pmu_alias pmu_intel_alias_table[] = {
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{"UNHALTED_CORE_CYCLES", "CPU_CLK_UNHALTED.THREAD_P_ANY"},
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{"UNHALTED-CORE-CYCLES", "CPU_CLK_UNHALTED.THREAD_P_ANY"},
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{"LLC_MISSES", "LONGEST_LAT_CACHE.MISS"},
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{"LLC-MISSES", "LONGEST_LAT_CACHE.MISS"},
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{"LLC_REFERENCE", "LONGEST_LAT_CACHE.REFERENCE"},
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{"LLC-REFERENCE", "LONGEST_LAT_CACHE.REFERENCE"},
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{"LLC_MISS_RHITM", "mem_load_l3_miss_retired.remote_hitm"},
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{"LLC-MISS-RHITM", "mem_load_l3_miss_retired.remote_hitm"},
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{"RESOURCE_STALL", "RESOURCE_STALLS.ANY"},
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{"RESOURCE_STALLS_ANY", "RESOURCE_STALLS.ANY"},
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{"BRANCH_INSTRUCTION_RETIRED", "BR_INST_RETIRED.ALL_BRANCHES"},
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{"BRANCH-INSTRUCTION-RETIRED", "BR_INST_RETIRED.ALL_BRANCHES"},
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{"BRANCH_MISSES_RETIRED", "BR_MISP_RETIRED.ALL_BRANCHES"},
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{"BRANCH-MISSES-RETIRED", "BR_MISP_RETIRED.ALL_BRANCHES"},
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{"cycles", "tsc-tsc"},
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{"unhalted-cycles", "CPU_CLK_UNHALTED.THREAD_P_ANY"},
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{"instructions", "inst-retired.any_p"},
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{"branch-mispredicts", "br_misp_retired.all_branches"},
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{"branches", "br_inst_retired.all_branches"},
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{"interrupts", "hw_interrupts.received"},
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{"ic-misses", "frontend_retired.l1i_miss"},
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{NULL, NULL},
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};
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static struct pmu_alias pmu_amd_alias_table[] = {
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{"UNHALTED_CORE_CYCLES", "ls_not_halted_cyc"},
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{"UNHALTED-CORE-CYCLES", "ls_not_halted_cyc"},
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{NULL, NULL},
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};
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static pmu_mfr_t
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pmu_events_mfr(void)
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{
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char *buf;
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size_t s;
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pmu_mfr_t mfr;
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if (sysctlbyname("kern.hwpmc.cpuid", (void *)NULL, &s,
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(void *)NULL, 0) == -1)
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return (PMU_INVALID);
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if ((buf = malloc(s + 1)) == NULL)
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return (PMU_INVALID);
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if (sysctlbyname("kern.hwpmc.cpuid", buf, &s,
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(void *)NULL, 0) == -1) {
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free(buf);
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return (PMU_INVALID);
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}
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if (strcasestr(buf, "AuthenticAMD") != NULL)
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mfr = PMU_AMD;
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else if (strcasestr(buf, "GenuineIntel") != NULL)
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mfr = PMU_INTEL;
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else
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mfr = PMU_INVALID;
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free(buf);
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return (mfr);
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}
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/*
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* The Intel fixed mode counters are:
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* "inst_retired.any",
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* "cpu_clk_unhalted.thread",
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* "cpu_clk_unhalted.thread_any",
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* "cpu_clk_unhalted.ref_tsc",
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*
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*/
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static const char *
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pmu_alias_get(const char *name)
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{
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pmu_mfr_t mfr;
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struct pmu_alias *pa;
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struct pmu_alias *pmu_alias_table;
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if ((mfr = pmu_events_mfr()) == PMU_INVALID)
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return (name);
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if (mfr == PMU_AMD)
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pmu_alias_table = pmu_amd_alias_table;
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else if (mfr == PMU_INTEL)
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pmu_alias_table = pmu_intel_alias_table;
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else
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return (name);
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for (pa = pmu_alias_table; pa->pa_alias != NULL; pa++)
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if (strcasecmp(name, pa->pa_alias) == 0)
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return (pa->pa_name);
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return (name);
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}
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struct pmu_event_desc {
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uint64_t ped_period;
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uint64_t ped_offcore_rsp;
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uint64_t ped_l3_thread;
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uint64_t ped_l3_slice;
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uint32_t ped_event;
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uint32_t ped_frontend;
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uint32_t ped_ldlat;
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uint32_t ped_config1;
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int16_t ped_umask;
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uint8_t ped_cmask;
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uint8_t ped_any;
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uint8_t ped_inv;
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uint8_t ped_edge;
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uint8_t ped_fc_mask;
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uint8_t ped_ch_mask;
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};
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static const struct pmu_events_map *
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pmu_events_map_get(const char *cpuid)
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{
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size_t s;
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char buf[64];
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const struct pmu_events_map *pme;
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if (cpuid != NULL) {
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memcpy(buf, cpuid, 64);
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} else {
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if (sysctlbyname("kern.hwpmc.cpuid", (void *)NULL, &s,
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(void *)NULL, 0) == -1)
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return (NULL);
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if (sysctlbyname("kern.hwpmc.cpuid", buf, &s,
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(void *)NULL, 0) == -1)
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return (NULL);
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}
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for (pme = pmu_events_map; pme->cpuid != NULL; pme++)
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if (strcmp(buf, pme->cpuid) == 0)
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return (pme);
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return (NULL);
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}
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static const struct pmu_event *
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pmu_event_get(const char *cpuid, const char *event_name, int *idx)
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{
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const struct pmu_events_map *pme;
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const struct pmu_event *pe;
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int i;
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if ((pme = pmu_events_map_get(cpuid)) == NULL)
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return (NULL);
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for (i = 0, pe = pme->table; pe->name || pe->desc || pe->event; pe++, i++) {
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if (pe->name == NULL)
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continue;
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if (strcasecmp(pe->name, event_name) == 0) {
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if (idx)
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*idx = i;
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return (pe);
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}
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}
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return (NULL);
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}
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int
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pmc_pmu_idx_get_by_event(const char *cpuid, const char *event)
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{
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int idx;
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const char *realname;
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realname = pmu_alias_get(event);
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if (pmu_event_get(cpuid, realname, &idx) == NULL)
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return (-1);
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return (idx);
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}
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const char *
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pmc_pmu_event_get_by_idx(const char *cpuid, int idx)
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{
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const struct pmu_events_map *pme;
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if ((pme = pmu_events_map_get(cpuid)) == NULL)
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return (NULL);
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assert(pme->table[idx].name);
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return (pme->table[idx].name);
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}
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static int
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pmu_parse_event(struct pmu_event_desc *ped, const char *eventin)
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{
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char *event;
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char *kvp, *key, *value, *r;
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char *debug;
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if ((event = strdup(eventin)) == NULL)
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return (ENOMEM);
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r = event;
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bzero(ped, sizeof(*ped));
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ped->ped_period = DEFAULT_SAMPLE_COUNT;
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ped->ped_umask = -1;
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while ((kvp = strsep(&event, ",")) != NULL) {
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key = strsep(&kvp, "=");
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if (key == NULL)
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abort();
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value = kvp;
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if (strcmp(key, "umask") == 0)
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ped->ped_umask = strtol(value, NULL, 16);
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else if (strcmp(key, "event") == 0)
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ped->ped_event = strtol(value, NULL, 16);
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else if (strcmp(key, "period") == 0)
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ped->ped_period = strtol(value, NULL, 10);
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else if (strcmp(key, "offcore_rsp") == 0)
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ped->ped_offcore_rsp = strtol(value, NULL, 16);
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else if (strcmp(key, "any") == 0)
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ped->ped_any = strtol(value, NULL, 10);
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else if (strcmp(key, "cmask") == 0)
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ped->ped_cmask = strtol(value, NULL, 10);
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else if (strcmp(key, "inv") == 0)
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ped->ped_inv = strtol(value, NULL, 10);
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else if (strcmp(key, "edge") == 0)
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ped->ped_edge = strtol(value, NULL, 10);
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else if (strcmp(key, "frontend") == 0)
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ped->ped_frontend = strtol(value, NULL, 16);
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else if (strcmp(key, "ldlat") == 0)
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ped->ped_ldlat = strtol(value, NULL, 16);
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else if (strcmp(key, "fc_mask") == 0)
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ped->ped_fc_mask = strtol(value, NULL, 16);
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else if (strcmp(key, "ch_mask") == 0)
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ped->ped_ch_mask = strtol(value, NULL, 16);
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else if (strcmp(key, "config1") == 0)
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ped->ped_config1 = strtol(value, NULL, 16);
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else if (strcmp(key, "l3_thread_mask") == 0)
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ped->ped_l3_thread = strtol(value, NULL, 16);
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else if (strcmp(key, "l3_slice_mask") == 0)
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ped->ped_l3_slice = strtol(value, NULL, 16);
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else {
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debug = getenv("PMUDEBUG");
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if (debug != NULL && strcmp(debug, "true") == 0 && value != NULL)
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printf("unrecognized kvpair: %s:%s\n", key, value);
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}
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}
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free(r);
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return (0);
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}
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uint64_t
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pmc_pmu_sample_rate_get(const char *event_name)
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{
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const struct pmu_event *pe;
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struct pmu_event_desc ped;
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event_name = pmu_alias_get(event_name);
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if ((pe = pmu_event_get(NULL, event_name, NULL)) == NULL)
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return (DEFAULT_SAMPLE_COUNT);
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if (pe->alias && (pe = pmu_event_get(NULL, pe->alias, NULL)) == NULL)
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return (DEFAULT_SAMPLE_COUNT);
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if (pe->event == NULL)
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return (DEFAULT_SAMPLE_COUNT);
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if (pmu_parse_event(&ped, pe->event))
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return (DEFAULT_SAMPLE_COUNT);
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return (ped.ped_period);
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}
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int
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pmc_pmu_enabled(void)
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{
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return (pmu_events_map_get(NULL) != NULL);
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}
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void
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pmc_pmu_print_counters(const char *event_name)
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{
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const struct pmu_events_map *pme;
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const struct pmu_event *pe;
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struct pmu_event_desc ped;
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char *debug;
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int do_debug;
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debug = getenv("PMUDEBUG");
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do_debug = 0;
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if (debug != NULL && strcmp(debug, "true") == 0)
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do_debug = 1;
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if ((pme = pmu_events_map_get(NULL)) == NULL)
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return;
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for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
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if (pe->name == NULL)
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continue;
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if (event_name != NULL && strcasestr(pe->name, event_name) == NULL)
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continue;
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printf("\t%s\n", pe->name);
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if (do_debug)
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pmu_parse_event(&ped, pe->event);
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}
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}
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void
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pmc_pmu_print_counter_desc(const char *ev)
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{
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const struct pmu_events_map *pme;
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const struct pmu_event *pe;
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if ((pme = pmu_events_map_get(NULL)) == NULL)
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return;
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for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
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if (pe->name == NULL)
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continue;
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if (strcasestr(pe->name, ev) != NULL &&
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pe->desc != NULL)
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printf("%s:\t%s\n", pe->name, pe->desc);
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}
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}
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void
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pmc_pmu_print_counter_desc_long(const char *ev)
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{
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const struct pmu_events_map *pme;
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const struct pmu_event *pe;
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if ((pme = pmu_events_map_get(NULL)) == NULL)
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return;
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for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
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if (pe->name == NULL)
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continue;
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if (strcasestr(pe->name, ev) != NULL) {
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if (pe->long_desc != NULL)
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printf("%s:\n%s\n", pe->name, pe->long_desc);
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else if (pe->desc != NULL)
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printf("%s:\t%s\n", pe->name, pe->desc);
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}
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}
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}
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void
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pmc_pmu_print_counter_full(const char *ev)
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{
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const struct pmu_events_map *pme;
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const struct pmu_event *pe;
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if ((pme = pmu_events_map_get(NULL)) == NULL)
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return;
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for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
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if (pe->name == NULL)
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continue;
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if (strcasestr(pe->name, ev) == NULL)
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continue;
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printf("name: %s\n", pe->name);
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if (pe->long_desc != NULL)
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printf("desc: %s\n", pe->long_desc);
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else if (pe->desc != NULL)
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printf("desc: %s\n", pe->desc);
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if (pe->event != NULL)
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printf("event: %s\n", pe->event);
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if (pe->topic != NULL)
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printf("topic: %s\n", pe->topic);
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if (pe->pmu != NULL)
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printf("pmu: %s\n", pe->pmu);
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if (pe->unit != NULL)
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printf("unit: %s\n", pe->unit);
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if (pe->perpkg != NULL)
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printf("perpkg: %s\n", pe->perpkg);
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if (pe->metric_expr != NULL)
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printf("metric_expr: %s\n", pe->metric_expr);
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if (pe->metric_name != NULL)
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printf("metric_name: %s\n", pe->metric_name);
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if (pe->metric_group != NULL)
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printf("metric_group: %s\n", pe->metric_group);
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}
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}
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static int
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pmc_pmu_amd_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm,
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struct pmu_event_desc *ped)
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{
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struct pmc_md_amd_op_pmcallocate *amd;
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const struct pmu_event *pe;
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int idx = -1;
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amd = &pm->pm_md.pm_amd;
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if (ped->ped_umask > 0) {
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pm->pm_caps |= PMC_CAP_QUALIFIER;
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amd->pm_amd_config |= AMD_PMC_TO_UNITMASK(ped->ped_umask);
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}
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pm->pm_class = PMC_CLASS_K8;
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pe = pmu_event_get(NULL, event_name, &idx);
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if (strcmp("l3cache", pe->topic) == 0){
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amd->pm_amd_config |= AMD_PMC_TO_EVENTMASK(ped->ped_event);
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amd->pm_amd_sub_class = PMC_AMD_SUB_CLASS_L3_CACHE;
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amd->pm_amd_config |= AMD_PMC_TO_L3SLICE(ped->ped_l3_slice);
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amd->pm_amd_config |= AMD_PMC_TO_L3CORE(ped->ped_l3_thread);
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}
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else if (strcmp("data fabric", pe->topic) == 0){
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amd->pm_amd_config |= AMD_PMC_TO_EVENTMASK_DF(ped->ped_event);
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amd->pm_amd_sub_class = PMC_AMD_SUB_CLASS_DATA_FABRIC;
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}
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else{
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amd->pm_amd_config |= AMD_PMC_TO_EVENTMASK(ped->ped_event);
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amd->pm_amd_sub_class = PMC_AMD_SUB_CLASS_CORE;
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if ((pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) == 0 ||
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(pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) ==
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(PMC_CAP_USER|PMC_CAP_SYSTEM))
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amd->pm_amd_config |= (AMD_PMC_USR | AMD_PMC_OS);
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else if (pm->pm_caps & PMC_CAP_USER)
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amd->pm_amd_config |= AMD_PMC_USR;
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else if (pm->pm_caps & PMC_CAP_SYSTEM)
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amd->pm_amd_config |= AMD_PMC_OS;
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if (ped->ped_edge)
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amd->pm_amd_config |= AMD_PMC_EDGE;
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if (ped->ped_inv)
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amd->pm_amd_config |= AMD_PMC_EDGE;
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if (pm->pm_caps & PMC_CAP_INTERRUPT)
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amd->pm_amd_config |= AMD_PMC_INT;
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}
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return (0);
|
|
}
|
|
|
|
static int
|
|
pmc_pmu_intel_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm,
|
|
struct pmu_event_desc *ped)
|
|
{
|
|
struct pmc_md_iap_op_pmcallocate *iap;
|
|
int isfixed;
|
|
|
|
isfixed = 0;
|
|
iap = &pm->pm_md.pm_iap;
|
|
if (strcasestr(event_name, "UNC_") == event_name ||
|
|
strcasestr(event_name, "uncore") != NULL) {
|
|
pm->pm_class = PMC_CLASS_UCP;
|
|
pm->pm_caps |= PMC_CAP_QUALIFIER;
|
|
} else if ((ped->ped_umask == -1) ||
|
|
(ped->ped_event == 0x0 && ped->ped_umask == 0x3)) {
|
|
pm->pm_class = PMC_CLASS_IAF;
|
|
} else {
|
|
pm->pm_class = PMC_CLASS_IAP;
|
|
pm->pm_caps |= PMC_CAP_QUALIFIER;
|
|
}
|
|
iap->pm_iap_config |= IAP_EVSEL(ped->ped_event);
|
|
if (ped->ped_umask > 0)
|
|
iap->pm_iap_config |= IAP_UMASK(ped->ped_umask);
|
|
iap->pm_iap_config |= IAP_CMASK(ped->ped_cmask);
|
|
iap->pm_iap_rsp = ped->ped_offcore_rsp;
|
|
|
|
if ((pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) == 0 ||
|
|
(pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) ==
|
|
(PMC_CAP_USER|PMC_CAP_SYSTEM))
|
|
iap->pm_iap_config |= (IAP_USR | IAP_OS);
|
|
else if (pm->pm_caps & PMC_CAP_USER)
|
|
iap->pm_iap_config |= IAP_USR;
|
|
else if (pm->pm_caps & PMC_CAP_SYSTEM)
|
|
iap->pm_iap_config |= IAP_OS;
|
|
if (ped->ped_edge)
|
|
iap->pm_iap_config |= IAP_EDGE;
|
|
if (ped->ped_any)
|
|
iap->pm_iap_config |= IAP_ANY;
|
|
if (ped->ped_inv)
|
|
iap->pm_iap_config |= IAP_EDGE;
|
|
if (pm->pm_caps & PMC_CAP_INTERRUPT)
|
|
iap->pm_iap_config |= IAP_INT;
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
pmc_pmu_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm)
|
|
{
|
|
const struct pmu_event *pe;
|
|
struct pmu_event_desc ped;
|
|
pmu_mfr_t mfr;
|
|
int idx = -1;
|
|
|
|
if ((mfr = pmu_events_mfr()) == PMU_INVALID)
|
|
return (ENOENT);
|
|
|
|
bzero(&pm->pm_md, sizeof(pm->pm_md));
|
|
pm->pm_caps |= (PMC_CAP_READ | PMC_CAP_WRITE);
|
|
event_name = pmu_alias_get(event_name);
|
|
if ((pe = pmu_event_get(NULL, event_name, &idx)) == NULL)
|
|
return (ENOENT);
|
|
if (pe->alias && (pe = pmu_event_get(NULL, pe->alias, &idx)) == NULL)
|
|
return (ENOENT);
|
|
assert(idx >= 0);
|
|
pm->pm_ev = idx;
|
|
|
|
if (pe->event == NULL)
|
|
return (ENOENT);
|
|
if (pmu_parse_event(&ped, pe->event))
|
|
return (ENOENT);
|
|
|
|
if (mfr == PMU_INTEL)
|
|
return (pmc_pmu_intel_pmcallocate(event_name, pm, &ped));
|
|
else
|
|
return (pmc_pmu_amd_pmcallocate(event_name, pm, &ped));
|
|
}
|
|
|
|
/*
|
|
* Ultimately rely on AMD calling theirs the same
|
|
*/
|
|
static const char *stat_mode_cntrs[] = {
|
|
"cpu_clk_unhalted.thread",
|
|
"inst_retired.any",
|
|
"br_inst_retired.all_branches",
|
|
"br_misp_retired.all_branches",
|
|
"longest_lat_cache.reference",
|
|
"longest_lat_cache.miss",
|
|
};
|
|
|
|
int
|
|
pmc_pmu_stat_mode(const char ***cntrs)
|
|
{
|
|
if (pmc_pmu_enabled()) {
|
|
*cntrs = stat_mode_cntrs;
|
|
return (0);
|
|
}
|
|
return (EOPNOTSUPP);
|
|
}
|
|
|
|
#else
|
|
|
|
uint64_t
|
|
pmc_pmu_sample_rate_get(const char *event_name __unused)
|
|
{
|
|
return (DEFAULT_SAMPLE_COUNT);
|
|
}
|
|
|
|
void
|
|
pmc_pmu_print_counters(const char *event_name __unused)
|
|
{
|
|
}
|
|
|
|
void
|
|
pmc_pmu_print_counter_desc(const char *e __unused)
|
|
{
|
|
}
|
|
|
|
void
|
|
pmc_pmu_print_counter_desc_long(const char *e __unused)
|
|
{
|
|
}
|
|
|
|
void
|
|
pmc_pmu_print_counter_full(const char *e __unused)
|
|
{
|
|
|
|
}
|
|
|
|
int
|
|
pmc_pmu_enabled(void)
|
|
{
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
pmc_pmu_pmcallocate(const char *e __unused, struct pmc_op_pmcallocate *p __unused)
|
|
{
|
|
return (EOPNOTSUPP);
|
|
}
|
|
|
|
const char *
|
|
pmc_pmu_event_get_by_idx(const char *c __unused, int idx __unused)
|
|
{
|
|
return (NULL);
|
|
}
|
|
|
|
int
|
|
pmc_pmu_stat_mode(const char ***a __unused)
|
|
{
|
|
return (EOPNOTSUPP);
|
|
}
|
|
|
|
int
|
|
pmc_pmu_idx_get_by_event(const char *c __unused, const char *e __unused)
|
|
{
|
|
return (-1);
|
|
}
|
|
|
|
#endif
|