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/*
* Copyright 2009, Intel Corporation
* Copyright 2009, Sun Microsystems, Inc
*
* This file is part of PowerTOP
*
* This program file is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program in a file named COPYING; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*
* Authors:
* Arjan van de Ven <arjan@linux.intel.com>
* Eric C Saxe <eric.saxe@sun.com>
* Aubrey Li <aubrey.li@intel.com>
*/
/*
* GPL Disclaimer
*
* For the avoidance of doubt, except that if any license choice other
* than GPL or LGPL is available it will apply instead, Sun elects to
* use only the General Public License version 2 (GPLv2) at this time
* for any software where a choice of GPL license versions is made
* available with the language indicating that GPLv2 or any later
* version may be used, or where a choice of which version of the GPL
* is applied is otherwise unspecified.
*/
#include <stdarg.h>
#include <stdlib.h>
#include <libgen.h>
#include <unistd.h>
#include <strings.h>
#include <sys/systeminfo.h>
#include <kstat.h>
#include <errno.h>
#include "powertop.h"
static char PROG_FMT[] = "%s: ";
static char ERR_FMT[] = ": %s";
static char *progname;
void
pt_set_progname(char *name)
{
progname = basename(name);
}
/*PRINTFLIKE1*/
void
pt_error(char *format, ...)
{
int err = errno;
va_list alist;
if (g_gui)
return;
if (progname != NULL)
(void) fprintf(stderr, PROG_FMT, progname);
va_start(alist, format);
(void) vfprintf(stderr, format, alist);
va_end(alist);
if (strchr(format, '\n') == NULL)
(void) fprintf(stderr, ERR_FMT, strerror(err));
}
/*
* Returns the number of online CPUs.
*/
uint_t
pt_enumerate_cpus(void)
{
int cpuid;
int max, cpus_conf;
uint_t ncpus = 0;
max = sysconf(_SC_CPUID_MAX);
cpus_conf = sysconf(_SC_NPROCESSORS_CONF);
/* Fall back to one CPU if any of the sysconf calls above failed */
if (max == -1 || cpus_conf == -1) {
max = cpus_conf = 1;
}
if ((g_cpu_table = malloc(cpus_conf * sizeof (processorid_t))) == NULL)
return (0);
for (cpuid = 0; cpuid < max; cpuid++) {
if (p_online(cpuid, P_STATUS) != -1) {
g_cpu_table[ncpus] = cpuid;
ncpus++;
}
}
return (ncpus);
}
void
pt_usage(void)
{
(void) fprintf(stderr, "%s %s\n\n", TITLE, COPYRIGHT_INTEL);
(void) fprintf(stderr, "usage: powertop [option]\n");
(void) fprintf(stderr, " -d, --dump [count] Read wakeups count "
"times and print list of top offenders\n");
(void) fprintf(stderr, " -t, --time [interval] Default time to gather "
"data in seconds [1-30s]\n");
(void) fprintf(stderr, " -v, --verbose Verbose mode, reports "
"kernel cyclic activity\n");
(void) fprintf(stderr, " -c, --cpu [CPU] Only observe a specific"
" CPU\n");
(void) fprintf(stderr, " -h, --help Show this help "
"message\n");
}
int
pt_get_bit_depth(void)
{
/*
* This little routine was derived from isainfo.c to look up
* the system's bit depth. It feeds a 10 byte long buffer to
* sysinfo (we only need the first word, sysinfo truncates and
* \0 terminates the rest) from which we figure out which isa
* we're running on.
*/
char buf[BIT_DEPTH_BUF];
if (sysinfo(SI_ARCHITECTURE_64, buf, BIT_DEPTH_BUF) == -1)
if (sysinfo(SI_ARCHITECTURE_32, buf, BIT_DEPTH_BUF) == -1)
return (-2);
if (strcmp(buf, "sparc") == 0 || strcmp(buf, "i386") == 0)
return (32);
if (strcmp(buf, "sparcv9") == 0 || strcmp(buf, "amd64") == 0)
return (64);
return (-3);
}
/*
* Simple integer comparison routine for the event report qsort(3C).
*/
int
pt_event_compare(const void *p1, const void *p2)
{
event_info_t i = *((event_info_t *)p1);
event_info_t j = *((event_info_t *)p2);
if (i.total_count > j.total_count)
return (-1);
if (i.total_count < j.total_count)
return (1);
return (0);
}
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