diff options
Diffstat (limited to 'usr.sbin/pmccontrol/pmccontrol.c')
| -rw-r--r-- | usr.sbin/pmccontrol/pmccontrol.c | 501 |
1 files changed, 0 insertions, 501 deletions
diff --git a/usr.sbin/pmccontrol/pmccontrol.c b/usr.sbin/pmccontrol/pmccontrol.c deleted file mode 100644 index cce1e0e..0000000 --- a/usr.sbin/pmccontrol/pmccontrol.c +++ /dev/null @@ -1,501 +0,0 @@ -/*- - * Copyright (c) 2003,2004 Joseph Koshy - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <sys/types.h> -#include <sys/queue.h> -#include <sys/sysctl.h> - -#include <assert.h> -#include <err.h> -#include <errno.h> -#include <fcntl.h> -#include <limits.h> -#include <pmc.h> -#include <stdarg.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sysexits.h> -#include <unistd.h> - -/* Compile time defaults */ - -#define PMCC_PRINT_USAGE 0 -#define PMCC_PRINT_EVENTS 1 -#define PMCC_LIST_STATE 2 -#define PMCC_ENABLE_DISABLE 3 -#define PMCC_SHOW_STATISTICS 4 - -#define PMCC_CPU_ALL -1 -#define PMCC_CPU_WILDCARD '*' - -#define PMCC_PMC_ALL -1 -#define PMCC_PMC_WILDCARD '*' - -#define PMCC_OP_IGNORE 0 -#define PMCC_OP_DISABLE 1 -#define PMCC_OP_ENABLE 2 - -#define PMCC_PROGRAM_NAME "pmccontrol" - -STAILQ_HEAD(pmcc_op_list, pmcc_op) head = STAILQ_HEAD_INITIALIZER(head); - -struct pmcc_op { - char op_cpu; - char op_pmc; - char op_op; - STAILQ_ENTRY(pmcc_op) op_next; -}; - -/* Function Prototypes */ -#if DEBUG -static void pmcc_init_debug(void); -#endif - -static int pmcc_do_list_state(void); -static int pmcc_do_enable_disable(struct pmcc_op_list *); -static int pmcc_do_list_events(void); - -/* Globals */ - -static char usage_message[] = - "Usage:\n" - " " PMCC_PROGRAM_NAME " -L\n" - " " PMCC_PROGRAM_NAME " -l\n" - " " PMCC_PROGRAM_NAME " -s\n" - " " PMCC_PROGRAM_NAME " [-e pmc | -d pmc | -c cpu] ..."; - -#if DEBUG -FILE *debug_stream = NULL; -#endif - -#if DEBUG -#define DEBUG_MSG(...) \ - (void) fprintf(debug_stream, "[pmccontrol] " __VA_ARGS__); -#else -#define DEBUG_MSG(m) /* */ -#endif /* !DEBUG */ - -int pmc_syscall = -1; - -#define PMC_CALL(cmd, params) \ -if ((error = syscall(pmc_syscall, PMC_OP_##cmd, (params))) != 0) \ -{ \ - DEBUG_MSG("ERROR: syscall [" #cmd "]"); \ - exit(EX_OSERR); \ -} - -#if DEBUG -/* log debug messages to a separate file */ -static void -pmcc_init_debug(void) -{ - char *fn; - - fn = getenv("PMCCONTROL_DEBUG"); - if (fn != NULL) - { - debug_stream = fopen(fn, "w"); - if (debug_stream == NULL) - debug_stream = stderr; - } else - debug_stream = stderr; -} -#endif - -static int -pmcc_do_enable_disable(struct pmcc_op_list *op_list) -{ - int c, error, i, j, ncpu, npmc, t; - cpumask_t haltedcpus, cpumask; - struct pmcc_op *np; - unsigned char *map; - unsigned char op; - int cpu, pmc; - size_t dummy; - - if ((ncpu = pmc_ncpu()) < 0) - err(EX_OSERR, "Unable to determine the number of cpus"); - - /* Determine the set of active CPUs. */ - cpumask = (1 << ncpu) - 1; - dummy = sizeof(int); - haltedcpus = (cpumask_t) 0; - if (ncpu > 1 && sysctlbyname("machdep.hlt_cpus", &haltedcpus, - &dummy, NULL, 0) < 0) - err(EX_OSERR, "ERROR: Cannot determine which CPUs are " - "halted"); - cpumask &= ~haltedcpus; - - /* Determine the maximum number of PMCs in any CPU. */ - npmc = 0; - for (c = 0; c < ncpu; c++) { - if ((t = pmc_npmc(c)) < 0) - err(EX_OSERR, "Unable to determine the number of " - "PMCs in CPU %d", c); - npmc = t > npmc ? t : npmc; - } - - if (npmc == 0) - errx(EX_CONFIG, "No PMCs found"); - - if ((map = malloc(npmc * ncpu)) == NULL) - err(EX_SOFTWARE, "Out of memory"); - - (void) memset(map, PMCC_OP_IGNORE, npmc*ncpu); - - error = 0; - STAILQ_FOREACH(np, op_list, op_next) { - - cpu = np->op_cpu; - pmc = np->op_pmc; - op = np->op_op; - - if (cpu >= ncpu) - errx(EX_DATAERR, "CPU id too large: \"%d\"", cpu); - - if (pmc >= npmc) - errx(EX_DATAERR, "PMC id too large: \"%d\"", pmc); - -#define MARKMAP(M,C,P,V) do { \ - *((M) + (C)*npmc + (P)) = (V); \ -} while (0) - -#define SET_PMCS(C,P,V) do { \ - if ((P) == PMCC_PMC_ALL) { \ - for (j = 0; j < npmc; j++) \ - MARKMAP(map, (C), j, (V)); \ - } else \ - MARKMAP(map, (C), (P), (V)); \ -} while (0) - -#define MAP(M,C,P) (*((M) + (C)*npmc + (P))) - - if (cpu == PMCC_CPU_ALL) - for (i = 0; i < ncpu; i++) { - if ((1 << i) & cpumask) - SET_PMCS(i, pmc, op); - } - else - SET_PMCS(cpu, pmc, op); - } - - /* Configure PMCS */ - for (i = 0; i < ncpu; i++) - for (j = 0; j < npmc; j++) { - unsigned char b; - - b = MAP(map, i, j); - - error = 0; - - if (b == PMCC_OP_ENABLE) - error = pmc_enable(i, j); - else if (b == PMCC_OP_DISABLE) - error = pmc_disable(i, j); - - if (error < 0) - err(EX_OSERR, "%s of PMC %d on CPU %d failed", - b == PMCC_OP_ENABLE ? "Enable" : - "Disable", j, i); - } - - return error; -} - -static int -pmcc_do_list_state(void) -{ - size_t dummy; - int c, cpu, n, npmc, ncpu; - unsigned int logical_cpus_mask; - struct pmc_info *pd; - struct pmc_pmcinfo *pi; - const struct pmc_cpuinfo *pc; - - if (pmc_cpuinfo(&pc) != 0) - err(EX_OSERR, "Unable to determine CPU information"); - - printf("%d %s CPUs present, with %d PMCs per CPU\n", pc->pm_ncpu, - pmc_name_of_cputype(pc->pm_cputype), - pc->pm_npmc); - - dummy = sizeof(logical_cpus_mask); - if (sysctlbyname("machdep.logical_cpus_mask", &logical_cpus_mask, - &dummy, NULL, 0) < 0) - logical_cpus_mask = 0; - - ncpu = pc->pm_ncpu; - - for (c = cpu = 0; cpu < ncpu; cpu++) { -#if defined(__i386__) || defined(__amd64__) - if (pc->pm_cputype == PMC_CPU_INTEL_PIV && - (logical_cpus_mask & (1 << cpu))) - continue; /* skip P4-style 'logical' cpus */ -#endif - if (pmc_pmcinfo(cpu, &pi) < 0) { - if (errno == ENXIO) - continue; - err(EX_OSERR, "Unable to get PMC status for CPU %d", - cpu); - } - - printf("#CPU %d:\n", c++); - npmc = pmc_npmc(cpu); - printf("#N NAME CLASS STATE ROW-DISP\n"); - - for (n = 0; n < npmc; n++) { - pd = &pi->pm_pmcs[n]; - - printf(" %-2d %-16s %-6s %-8s %-10s", - n, - pd->pm_name, - pmc_name_of_class(pd->pm_class), - pd->pm_enabled ? "ENABLED" : "DISABLED", - pmc_name_of_disposition(pd->pm_rowdisp)); - - if (pd->pm_ownerpid != -1) { - printf(" (pid %d)", pd->pm_ownerpid); - printf(" %-32s", - pmc_name_of_event(pd->pm_event)); - if (PMC_IS_SAMPLING_MODE(pd->pm_mode)) - printf(" (reload count %jd)", - pd->pm_reloadcount); - } - printf("\n"); - } - free(pi); - } - return 0; -} - -static int -pmcc_do_list_events(void) -{ - enum pmc_class c; - unsigned int i, j, nevents; - const char **eventnamelist; - const struct pmc_cpuinfo *ci; - - if (pmc_cpuinfo(&ci) != 0) - err(EX_OSERR, "Unable to determine CPU information"); - - eventnamelist = NULL; - - for (i = 0; i < ci->pm_nclass; i++) { - c = ci->pm_classes[i].pm_class; - - printf("%s\n", pmc_name_of_class(c)); - if (pmc_event_names_of_class(c, &eventnamelist, &nevents) < 0) - err(EX_OSERR, "ERROR: Cannot find information for " - "event class \"%s\"", pmc_name_of_class(c)); - - for (j = 0; j < nevents; j++) - printf("\t%s\n", eventnamelist[j]); - - free(eventnamelist); - } - return 0; -} - -static int -pmcc_show_statistics(void) -{ - - struct pmc_driverstats gms; - - if (pmc_get_driver_stats(&gms) < 0) - err(EX_OSERR, "ERROR: cannot retrieve driver statistics"); - - /* - * Print statistics. - */ - -#define PRINT(N,V) (void) printf("%-40s %d\n", (N), gms.pm_##V) - PRINT("interrupts processed:", intr_processed); - PRINT("non-PMC interrupts:", intr_ignored); - PRINT("sampling stalls due to space shortages:", intr_bufferfull); - PRINT("system calls:", syscalls); - PRINT("system calls with errors:", syscall_errors); - PRINT("buffer requests:", buffer_requests); - PRINT("buffer requests failed:", buffer_requests_failed); - PRINT("sampling log sweeps:", log_sweeps); - - return 0; -} - -/* - * Main - */ - -int -main(int argc, char **argv) -{ - int error, command, currentcpu, option, pmc; - char *dummy; - struct pmcc_op *p; - -#if DEBUG - pmcc_init_debug(); -#endif - - /* parse args */ - - currentcpu = PMCC_CPU_ALL; - command = PMCC_PRINT_USAGE; - error = 0; - - STAILQ_INIT(&head); - - while ((option = getopt(argc, argv, ":c:d:e:lLs")) != -1) - switch (option) { - case 'L': - if (command != PMCC_PRINT_USAGE) { - error = 1; - break; - } - command = PMCC_PRINT_EVENTS; - break; - - case 'c': - if (command != PMCC_PRINT_USAGE && - command != PMCC_ENABLE_DISABLE) { - error = 1; - break; - } - command = PMCC_ENABLE_DISABLE; - - if (*optarg == PMCC_CPU_WILDCARD) - currentcpu = PMCC_CPU_ALL; - else { - currentcpu = strtoul(optarg, &dummy, 0); - if (*dummy != '\0' || currentcpu < 0) - errx(EX_DATAERR, - "\"%s\" is not a valid CPU id", - optarg); - } - break; - - case 'd': - case 'e': - if (command != PMCC_PRINT_USAGE && - command != PMCC_ENABLE_DISABLE) { - error = 1; - break; - } - command = PMCC_ENABLE_DISABLE; - - if (*optarg == PMCC_PMC_WILDCARD) - pmc = PMCC_PMC_ALL; - else { - pmc = strtoul(optarg, &dummy, 0); - if (*dummy != '\0' || pmc < 0) - errx(EX_DATAERR, - "\"%s\" is not a valid PMC id", - optarg); - } - - if ((p = malloc(sizeof(*p))) == NULL) - err(EX_SOFTWARE, "Out of memory"); - - p->op_cpu = currentcpu; - p->op_pmc = pmc; - p->op_op = option == 'd' ? PMCC_OP_DISABLE : - PMCC_OP_ENABLE; - - STAILQ_INSERT_TAIL(&head, p, op_next); - break; - - case 'l': - if (command != PMCC_PRINT_USAGE) { - error = 1; - break; - } - command = PMCC_LIST_STATE; - break; - - case 's': - if (command != PMCC_PRINT_USAGE) { - error = 1; - break; - } - command = PMCC_SHOW_STATISTICS; - break; - - case ':': - errx(EX_USAGE, - "Missing argument to option '-%c'", optopt); - break; - - case '?': - warnx("Unrecognized option \"-%c\"", optopt); - errx(EX_USAGE, usage_message); - break; - - default: - error = 1; - break; - - } - - if (command == PMCC_PRINT_USAGE) - (void) errx(EX_USAGE, usage_message); - - if (error) - exit(EX_USAGE); - - if (pmc_init() < 0) - err(EX_UNAVAILABLE, - "Initialization of the pmc(3) library failed"); - - switch (command) { - case PMCC_LIST_STATE: - error = pmcc_do_list_state(); - break; - case PMCC_PRINT_EVENTS: - error = pmcc_do_list_events(); - break; - case PMCC_SHOW_STATISTICS: - error = pmcc_show_statistics(); - break; - case PMCC_ENABLE_DISABLE: - if (STAILQ_EMPTY(&head)) - errx(EX_USAGE, "No PMCs specified to enable or disable"); - error = pmcc_do_enable_disable(&head); - break; - default: - assert(0); - - } - - if (error != 0) - err(EX_OSERR, "Command failed"); - exit(0); -} |
