Date: Sun, 1 Apr 2001 19:49:02 +0200 (CEST) From: Maxime Henrion <mux@qualys.com> To: FreeBSD-gnats-submit@freebsd.org Subject: i386/26272: [PATCH] Adds a sysctl to get the cpu frequency Message-ID: <200104011749.f31Hn2200759@nebula.cybercable.fr>
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>Number: 26272
>Category: i386
>Synopsis: Adds a sysctl to get the cpu frequency
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: change-request
>Submitter-Id: current-users
>Arrival-Date: Sun Apr 01 10:50:00 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator: Maxime Henrion
>Release: FreeBSD 4.3-RC i386
>Organization:
>Environment:
System: FreeBSD nebula.cybercable.fr 4.3-RC FreeBSD 4.3-RC #14: Sun Apr 1 19:14:00 CEST 2001 mux@nebula.cybercable.fr:/usr/src/sys/compile/NEBULA i386
>Description:
There are severl sysctl's that provide cpu information but
none of them gives its frequency.
>How-To-Repeat:
>Fix:
Patch for RELENG_4 :
diff -cr /usr/src/sys/i386/i386/identcpu.c ./i386/i386/identcpu.c
*** /usr/src/sys/i386/i386/identcpu.c Sat Sep 30 05:32:21 2000
--- ./i386/i386/identcpu.c Sun Apr 1 19:18:00 2001
***************
*** 86,91 ****
--- 86,95 ----
SYSCTL_STRING(_hw, HW_MODEL, model, CTLFLAG_RD,
cpu_model, 0, "Machine model");
+ static char cpu_freq[32] = "unknown";
+ SYSCTL_STRING(_hw, HW_FREQUENCY, frequency, CTLFLAG_RD,
+ cpu_freq, 0, "Machine frequency");
+
static struct cpu_nameclass i386_cpus[] = {
{ "Intel 80286", CPUCLASS_286 }, /* CPU_286 */
{ "i386SX", CPUCLASS_386 }, /* CPU_386SX */
***************
*** 509,526 ****
#endif
#if defined(I586_CPU)
case CPUCLASS_586:
! printf("%d.%02d-MHz ",
(tsc_freq + 4999) / 1000000,
((tsc_freq + 4999) / 10000) % 100);
! printf("586");
break;
#endif
#if defined(I686_CPU)
case CPUCLASS_686:
! printf("%d.%02d-MHz ",
(tsc_freq + 4999) / 1000000,
((tsc_freq + 4999) / 10000) % 100);
! printf("686");
break;
#endif
default:
--- 513,530 ----
#endif
#if defined(I586_CPU)
case CPUCLASS_586:
! sprintf(cpu_freq, "%d.%02d-MHz ",
(tsc_freq + 4999) / 1000000,
((tsc_freq + 4999) / 10000) % 100);
! printf("%s586", cpu_freq);
break;
#endif
#if defined(I686_CPU)
case CPUCLASS_686:
! sprintf(cpu_freq, "%d.%02d-MHz ",
(tsc_freq + 4999) / 1000000,
((tsc_freq + 4999) / 10000) % 100);
! printf("%s686", cpu_freq);
break;
#endif
default:
diff -cr /usr/src/sys/sys/sysctl.h ./sys/sysctl.h
*** /usr/src/sys/sys/sysctl.h Thu Feb 22 10:29:42 2001
--- ./sys/sysctl.h Sun Apr 1 19:18:21 2001
***************
*** 416,421 ****
--- 416,422 ----
#define HW_FLOATINGPT 10 /* int: has HW floating point? */
#define HW_MACHINE_ARCH 11 /* string: machine architecture */
#define HW_MAXID 12 /* number of valid hw ids */
+ #define HW_FREQUENCY 13 /* cpu frequency */
#define CTL_HW_NAMES { \
{ 0, 0 }, \
>Release-Note:
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