xref: /illumos-gate/usr/src/cmd/powertop/common/util.c (revision 2d83778a)
1bcde4861SRafael Vanoni Polanczyk /*
288681574SRafael Vanoni  * Copyright 2009, Intel Corporation
388681574SRafael Vanoni  * Copyright 2009, Sun Microsystems, Inc
4bcde4861SRafael Vanoni Polanczyk  *
5bcde4861SRafael Vanoni Polanczyk  * This file is part of PowerTOP
6bcde4861SRafael Vanoni Polanczyk  *
7bcde4861SRafael Vanoni Polanczyk  * This program file is free software; you can redistribute it and/or modify it
8bcde4861SRafael Vanoni Polanczyk  * under the terms of the GNU General Public License as published by the
9bcde4861SRafael Vanoni Polanczyk  * Free Software Foundation; version 2 of the License.
10bcde4861SRafael Vanoni Polanczyk  *
11bcde4861SRafael Vanoni Polanczyk  * This program is distributed in the hope that it will be useful, but WITHOUT
12bcde4861SRafael Vanoni Polanczyk  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13bcde4861SRafael Vanoni Polanczyk  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14bcde4861SRafael Vanoni Polanczyk  * for more details.
15bcde4861SRafael Vanoni Polanczyk  *
16bcde4861SRafael Vanoni Polanczyk  * You should have received a copy of the GNU General Public License
17bcde4861SRafael Vanoni Polanczyk  * along with this program in a file named COPYING; if not, write to the
18bcde4861SRafael Vanoni Polanczyk  * Free Software Foundation, Inc.,
19bcde4861SRafael Vanoni Polanczyk  * 51 Franklin Street, Fifth Floor,
20bcde4861SRafael Vanoni Polanczyk  * Boston, MA 02110-1301 USA
21bcde4861SRafael Vanoni Polanczyk  *
22bcde4861SRafael Vanoni Polanczyk  * Authors:
23bcde4861SRafael Vanoni Polanczyk  *	Arjan van de Ven <arjan@linux.intel.com>
24bcde4861SRafael Vanoni Polanczyk  *	Eric C Saxe <eric.saxe@sun.com>
25bcde4861SRafael Vanoni Polanczyk  *	Aubrey Li <aubrey.li@intel.com>
26bcde4861SRafael Vanoni Polanczyk  */
27bcde4861SRafael Vanoni Polanczyk 
28bcde4861SRafael Vanoni Polanczyk /*
29bcde4861SRafael Vanoni Polanczyk  * GPL Disclaimer
30bcde4861SRafael Vanoni Polanczyk  *
31bcde4861SRafael Vanoni Polanczyk  * For the avoidance of doubt, except that if any license choice other
32bcde4861SRafael Vanoni Polanczyk  * than GPL or LGPL is available it will apply instead, Sun elects to
33bcde4861SRafael Vanoni Polanczyk  * use only the General Public License version 2 (GPLv2) at this time
34bcde4861SRafael Vanoni Polanczyk  * for any software where a choice of GPL license versions is made
35bcde4861SRafael Vanoni Polanczyk  * available with the language indicating that GPLv2 or any later
36bcde4861SRafael Vanoni Polanczyk  * version may be used, or where a choice of which version of the GPL
37bcde4861SRafael Vanoni Polanczyk  * is applied is otherwise unspecified.
38bcde4861SRafael Vanoni Polanczyk  */
39bcde4861SRafael Vanoni Polanczyk 
40bcde4861SRafael Vanoni Polanczyk #include <stdarg.h>
41bcde4861SRafael Vanoni Polanczyk #include <stdlib.h>
42bcde4861SRafael Vanoni Polanczyk #include <libgen.h>
43bcde4861SRafael Vanoni Polanczyk #include <unistd.h>
44bcde4861SRafael Vanoni Polanczyk #include <strings.h>
45bcde4861SRafael Vanoni Polanczyk #include <sys/systeminfo.h>
46bcde4861SRafael Vanoni Polanczyk #include <kstat.h>
47bcde4861SRafael Vanoni Polanczyk #include <errno.h>
48bcde4861SRafael Vanoni Polanczyk #include "powertop.h"
49bcde4861SRafael Vanoni Polanczyk 
50bcde4861SRafael Vanoni Polanczyk static char 	PROG_FMT[] = "%s: ";
51bcde4861SRafael Vanoni Polanczyk static char 	ERR_FMT[] = ": %s";
52bcde4861SRafael Vanoni Polanczyk static char 	*progname;
53bcde4861SRafael Vanoni Polanczyk 
54bcde4861SRafael Vanoni Polanczyk void
pt_set_progname(char * name)55bcde4861SRafael Vanoni Polanczyk pt_set_progname(char *name)
56bcde4861SRafael Vanoni Polanczyk {
57bcde4861SRafael Vanoni Polanczyk 	progname = basename(name);
58bcde4861SRafael Vanoni Polanczyk }
59bcde4861SRafael Vanoni Polanczyk 
60bcde4861SRafael Vanoni Polanczyk /*PRINTFLIKE1*/
61bcde4861SRafael Vanoni Polanczyk void
pt_error(char * format,...)62bcde4861SRafael Vanoni Polanczyk pt_error(char *format, ...)
63bcde4861SRafael Vanoni Polanczyk {
64bcde4861SRafael Vanoni Polanczyk 	int 	err = errno;
65bcde4861SRafael Vanoni Polanczyk 	va_list alist;
66bcde4861SRafael Vanoni Polanczyk 
67b47b5b34SRafael Vanoni 	if (g_gui)
68b158c044SRafael Vanoni 		return;
69b158c044SRafael Vanoni 
70bcde4861SRafael Vanoni Polanczyk 	if (progname != NULL)
71bcde4861SRafael Vanoni Polanczyk 		(void) fprintf(stderr, PROG_FMT, progname);
72bcde4861SRafael Vanoni Polanczyk 
73bcde4861SRafael Vanoni Polanczyk 	va_start(alist, format);
74bcde4861SRafael Vanoni Polanczyk 	(void) vfprintf(stderr, format, alist);
75bcde4861SRafael Vanoni Polanczyk 	va_end(alist);
76bcde4861SRafael Vanoni Polanczyk 
77bcde4861SRafael Vanoni Polanczyk 	if (strchr(format, '\n') == NULL)
78*2d83778aSRafael Vanoni 		(void) fprintf(stderr, ERR_FMT, strerror(err));
79bcde4861SRafael Vanoni Polanczyk }
80bcde4861SRafael Vanoni Polanczyk 
81b47b5b34SRafael Vanoni /*
82b47b5b34SRafael Vanoni  * Returns the number of online CPUs.
83b47b5b34SRafael Vanoni  */
84b47b5b34SRafael Vanoni uint_t
pt_enumerate_cpus(void)85*2d83778aSRafael Vanoni pt_enumerate_cpus(void)
86bcde4861SRafael Vanoni Polanczyk {
87bcde4861SRafael Vanoni Polanczyk 	int	cpuid;
88bcde4861SRafael Vanoni Polanczyk 	int	max, cpus_conf;
89b47b5b34SRafael Vanoni 	uint_t	ncpus = 0;
90bcde4861SRafael Vanoni Polanczyk 
91bcde4861SRafael Vanoni Polanczyk 	max 		= sysconf(_SC_CPUID_MAX);
92bcde4861SRafael Vanoni Polanczyk 	cpus_conf	= sysconf(_SC_NPROCESSORS_CONF);
93b47b5b34SRafael Vanoni 
94b47b5b34SRafael Vanoni 	/* Fall back to one CPU if any of the sysconf calls above failed */
95b47b5b34SRafael Vanoni 	if (max == -1 || cpus_conf == -1) {
96b47b5b34SRafael Vanoni 		max = cpus_conf = 1;
97b47b5b34SRafael Vanoni 	}
98b47b5b34SRafael Vanoni 
99b47b5b34SRafael Vanoni 	if ((g_cpu_table = malloc(cpus_conf * sizeof (processorid_t))) == NULL)
100b47b5b34SRafael Vanoni 		return (0);
101bcde4861SRafael Vanoni Polanczyk 
102bcde4861SRafael Vanoni Polanczyk 	for (cpuid = 0; cpuid < max; cpuid++) {
103bcde4861SRafael Vanoni Polanczyk 		if (p_online(cpuid, P_STATUS) != -1) {
104b47b5b34SRafael Vanoni 			g_cpu_table[ncpus] = cpuid;
105bcde4861SRafael Vanoni Polanczyk 			ncpus++;
106bcde4861SRafael Vanoni Polanczyk 		}
107bcde4861SRafael Vanoni Polanczyk 	}
108b47b5b34SRafael Vanoni 	return (ncpus);
109bcde4861SRafael Vanoni Polanczyk }
110bcde4861SRafael Vanoni Polanczyk 
111bcde4861SRafael Vanoni Polanczyk void
pt_usage(void)112*2d83778aSRafael Vanoni pt_usage(void)
113bcde4861SRafael Vanoni Polanczyk {
114b47b5b34SRafael Vanoni 	(void) fprintf(stderr, "%s   %s\n\n", TITLE, COPYRIGHT_INTEL);
115*2d83778aSRafael Vanoni 	(void) fprintf(stderr, "usage: powertop [option]\n");
116bcde4861SRafael Vanoni Polanczyk 	(void) fprintf(stderr, "  -d, --dump [count]	Read wakeups count "
117bcde4861SRafael Vanoni Polanczyk 	    "times and print list of top offenders\n");
118bcde4861SRafael Vanoni Polanczyk 	(void) fprintf(stderr, "  -t, --time [interval]	Default time to gather "
119*2d83778aSRafael Vanoni 	    "data in seconds [1-30s]\n");
120bcde4861SRafael Vanoni Polanczyk 	(void) fprintf(stderr, "  -v, --verbose		Verbose mode, reports "
121bcde4861SRafael Vanoni Polanczyk 	    "kernel cyclic activity\n");
122b47b5b34SRafael Vanoni 	(void) fprintf(stderr, "  -c, --cpu [CPU]	Only observe a specific"
123b47b5b34SRafael Vanoni 	    " CPU\n");
124bcde4861SRafael Vanoni Polanczyk 	(void) fprintf(stderr, "  -h, --help		Show this help "
125bcde4861SRafael Vanoni Polanczyk 	    "message\n");
126bcde4861SRafael Vanoni Polanczyk }
127bcde4861SRafael Vanoni Polanczyk 
128bcde4861SRafael Vanoni Polanczyk int
pt_get_bit_depth(void)129*2d83778aSRafael Vanoni pt_get_bit_depth(void)
130bcde4861SRafael Vanoni Polanczyk {
131bcde4861SRafael Vanoni Polanczyk 	/*
132bcde4861SRafael Vanoni Polanczyk 	 * This little routine was derived from isainfo.c to look up
133bcde4861SRafael Vanoni Polanczyk 	 * the system's bit depth. It feeds a 10 byte long buffer to
134bcde4861SRafael Vanoni Polanczyk 	 * sysinfo (we only need the first word, sysinfo truncates and
135bcde4861SRafael Vanoni Polanczyk 	 * \0 terminates the rest) from which we figure out which isa
136bcde4861SRafael Vanoni Polanczyk 	 * we're running on.
137bcde4861SRafael Vanoni Polanczyk 	 */
138bcde4861SRafael Vanoni Polanczyk 	char	buf[BIT_DEPTH_BUF];
139bcde4861SRafael Vanoni Polanczyk 
140bcde4861SRafael Vanoni Polanczyk 	if (sysinfo(SI_ARCHITECTURE_64, buf, BIT_DEPTH_BUF) == -1)
141bcde4861SRafael Vanoni Polanczyk 		if (sysinfo(SI_ARCHITECTURE_32, buf, BIT_DEPTH_BUF) == -1)
142bcde4861SRafael Vanoni Polanczyk 			return (-2);
143bcde4861SRafael Vanoni Polanczyk 
144bcde4861SRafael Vanoni Polanczyk 	if (strcmp(buf, "sparc") == 0 || strcmp(buf, "i386") == 0)
145bcde4861SRafael Vanoni Polanczyk 		return (32);
146bcde4861SRafael Vanoni Polanczyk 
147bcde4861SRafael Vanoni Polanczyk 	if (strcmp(buf, "sparcv9") == 0 || strcmp(buf, "amd64") == 0)
148bcde4861SRafael Vanoni Polanczyk 		return (64);
149bcde4861SRafael Vanoni Polanczyk 
150bcde4861SRafael Vanoni Polanczyk 	return (-3);
151bcde4861SRafael Vanoni Polanczyk }
152bcde4861SRafael Vanoni Polanczyk 
153bcde4861SRafael Vanoni Polanczyk /*
154bcde4861SRafael Vanoni Polanczyk  * Simple integer comparison routine for the event report qsort(3C).
155bcde4861SRafael Vanoni Polanczyk  */
156bcde4861SRafael Vanoni Polanczyk int
pt_event_compare(const void * p1,const void * p2)157*2d83778aSRafael Vanoni pt_event_compare(const void *p1, const void *p2)
158bcde4861SRafael Vanoni Polanczyk {
159bcde4861SRafael Vanoni Polanczyk 	event_info_t i = *((event_info_t *)p1);
160bcde4861SRafael Vanoni Polanczyk 	event_info_t j = *((event_info_t *)p2);
161bcde4861SRafael Vanoni Polanczyk 
162bcde4861SRafael Vanoni Polanczyk 	if (i.total_count > j.total_count)
163bcde4861SRafael Vanoni Polanczyk 		return (-1);
164bcde4861SRafael Vanoni Polanczyk 
165bcde4861SRafael Vanoni Polanczyk 	if (i.total_count < j.total_count)
166bcde4861SRafael Vanoni Polanczyk 		return (1);
167bcde4861SRafael Vanoni Polanczyk 
168bcde4861SRafael Vanoni Polanczyk 	return (0);
169bcde4861SRafael Vanoni Polanczyk }
170