/*
* showreset.c - getting the PAL reset values for the PMCs
*
* Copyright (c) 2002-2006 Hewlett-Packard Development Company, L.P.
* Contributed by Stephane Eranian <eranian@hpl.hp.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* This file is part of libpfm, a performance monitoring support library for
* applications on Linux/ia64.
*/
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
#include <perfmon/perfmon.h>
#include <perfmon/pfmlib.h>
#define NUM_PMCS PFMLIB_MAX_PMCS
#define NUM_PMDS PFMLIB_MAX_PMDS
static void fatal_error(char *fmt,...) __attribute__((noreturn));
static void
fatal_error(char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
exit(1);
}
int
main(int argc, char **argv)
{
unsigned int i, cnum = 0;
pfarg_reg_t pc[NUM_PMCS];
pfmlib_regmask_t impl_pmcs;
unsigned int num_pmcs;
/*
* Initialize pfm library (required before we can use it)
*/
if (pfm_initialize() != PFMLIB_SUCCESS) {
printf("Can't initialize library\n");
exit(1);
}
memset(&impl_pmcs, 0, sizeof(impl_pmcs));
memset(pc, 0, sizeof(pc));
pfm_get_impl_pmcs(&impl_pmcs);
pfm_get_num_pmcs(&num_pmcs);
for(i=0; num_pmcs ; i++) {
if (pfm_regmask_isset(&impl_pmcs, i) == 0) continue;
pc[cnum++].reg_num = i;
num_pmcs--;
}
if (perfmonctl(0, PFM_GET_PMC_RESET_VAL, pc, cnum) == -1 ) {
if (errno == ENOSYS) {
fatal_error("Your kernel does not have performance monitoring support!\n");
}
fatal_error("cannot get reset values: %s\n", strerror(errno));
}
for (i=0; i < cnum; i++) {
printf("PMC%u 0x%lx\n", pc[i].reg_num, pc[i].reg_value);
}
return 0;
}