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Add a sysctl that records and reports the CPU clock rate calculated

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at boot.  Funny how often this trivial piece of information crops up
in embedded boxen.

Sponsored by:   St. Bernard Software
This commit is contained in:
Wes Peters 2003-04-10 07:05:24 +00:00
parent 227e700639
commit c2ff1e1682
2 changed files with 12 additions and 0 deletions
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6
sys/amd64/amd64/identcpu.c
View File

@ -95,6 +95,10 @@ static char cpu_model[128];
SYSCTL_STRING(_hw, HW_MODEL, model, CTLFLAG_RD,
cpu_model, 0, "Machine model");
static int hw_clockrate;
SYSCTL_INT(_hw, OID_AUTO, clockrate, CTLFLAG_RD,
&hw_clockrate, 0, "CPU instruction clock rate");
#if defined(I486_CPU) || defined(I586_CPU) || defined(I686_CPU)
static char cpu_brand[48];
@ -568,6 +572,7 @@ printcpuinfo(void)
#endif
#if defined(I586_CPU)
case CPUCLASS_586:
hw_clockrate = (tsc_freq + 5000) / 1000000;
printf("%jd.%02d-MHz ",
(intmax_t)(tsc_freq + 4999) / 1000000,
(u_int)((tsc_freq + 4999) / 10000) % 100);
@ -576,6 +581,7 @@ printcpuinfo(void)
#endif
#if defined(I686_CPU)
case CPUCLASS_686:
hw_clockrate = (tsc_freq + 5000) / 1000000;
printf("%jd.%02d-MHz ",
(intmax_t)(tsc_freq + 4999) / 1000000,
(u_int)((tsc_freq + 4999) / 10000) % 100);

6
sys/i386/i386/identcpu.c
View File

@ -95,6 +95,10 @@ static char cpu_model[128];
SYSCTL_STRING(_hw, HW_MODEL, model, CTLFLAG_RD,
cpu_model, 0, "Machine model");
static int hw_clockrate;
SYSCTL_INT(_hw, OID_AUTO, clockrate, CTLFLAG_RD,
&hw_clockrate, 0, "CPU instruction clock rate");
#if defined(I486_CPU) || defined(I586_CPU) || defined(I686_CPU)
static char cpu_brand[48];
@ -568,6 +572,7 @@ printcpuinfo(void)
#endif
#if defined(I586_CPU)
case CPUCLASS_586:
hw_clockrate = (tsc_freq + 5000) / 1000000;
printf("%jd.%02d-MHz ",
(intmax_t)(tsc_freq + 4999) / 1000000,
(u_int)((tsc_freq + 4999) / 10000) % 100);
@ -576,6 +581,7 @@ printcpuinfo(void)
#endif
#if defined(I686_CPU)
case CPUCLASS_686:
hw_clockrate = (tsc_freq + 5000) / 1000000;
printf("%jd.%02d-MHz ",
(intmax_t)(tsc_freq + 4999) / 1000000,
(u_int)((tsc_freq + 4999) / 10000) % 100);