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cpu voltage patch

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git-svn-id: https://conky.svn.sourceforge.net/svnroot/conky/trunk/conky1@657 7f574dfc-610e-0410-a909-a81674777703
This commit is contained in:
Brenden Matthews 2006-05-24 00:23:47 +00:00
parent 20828ce587
commit 39d836dcb1
8 changed files with 168 additions and 0 deletions
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1
AUTHORS
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@ -138,6 +138,7 @@ Pascal Eberhard <pascal dor eberhard at gmail dot com>
Peter Tarjan <ptarjan at citromail dot hu>
IBM acpi support patch
SMP support for freq stuff
CPU voltage patch
Petr Holub <hopet@users.sourceforge.net>
fix autotools on FreeBSD in autogen.sh

4
ChangeLog
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@ -1,5 +1,9 @@
# $Id$
2006-05-23
* CPU voltage support via $voltage_mv and $voltage_v (thanks to Peter
Tarjan for the patch)
2006-05-21
* SMP support for $freq and $freq_g (thanks to Peter Tarjan for the
patch)

10
README
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@ -561,6 +561,16 @@ VARIABLES
omitted, the parameter defaults to 1.
voltage_mv (n)
Returns CPU #n's voltage in mV. CPUs are counted from 1. If
omitted, the parameter defaults to 1.
voltage_v (n)
Returns CPU #n's voltage in V. CPUs are counted from 1. If omit-
ted, the parameter defaults to 1.
freq_dyn
Returns CPU frequency in MHz, but is calculated by counting to
clock cycles to complete an instruction. Only available for

12
doc/conky.1
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@ -512,6 +512,18 @@ Returns CPU #n's frequency in GHz. CPUs are
counted from 1. If omitted, the parameter
defaults to 1.
.TP
\fBvoltage_mv\fR \fB(n)\fR
Returns CPU #n's voltage in mV. CPUs are
counted from 1. If omitted, the parameter
defaults to 1.
.TP
\fBvoltage_v\fR \fB(n)\fR
Returns CPU #n's voltage in V. CPUs are
counted from 1. If omitted, the parameter
defaults to 1.
.TP
\fBfreq_dyn\fR
Returns CPU frequency in MHz, but is calculated by counting to clock cycles to complete an instruction. Only available for x86/amd64.

23
doc/variables.xml
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@ -385,6 +385,29 @@
<para></para></listitem>
</varlistentry>
<varlistentry>
<term>
<command><option>voltage_mv</option></command>
<option>(n)</option>
</term>
<listitem>
Returns CPU #n's voltage in mV. CPUs are
counted from 1. If omitted, the parameter
defaults to 1.
<para></para></listitem>
</varlistentry>
<varlistentry>
<term>
<command><option>voltage_v</option></command>
<option>(n)</option>
</term>
<listitem>
Returns CPU #n's voltage in V. CPUs are
counted from 1. If omitted, the parameter
defaults to 1.
<para></para></listitem>
</varlistentry>
<varlistentry>
<term>
<command><option>freq_dyn</option></command>

39
src/conky.c
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@ -873,6 +873,8 @@ enum text_object_type {
OBJ_ibm_volume,
OBJ_ibm_brightness,
OBJ_pb_battery,
OBJ_voltage_mv,
OBJ_voltage_v,
#endif /* __linux__ */
OBJ_if_existing,
OBJ_if_mounted,
@ -2009,6 +2011,36 @@ static struct text_object *construct_text_object(const char *s, const char *arg,
{
obj->data.cpu_index=atoi(&arg[0]);
}
END OBJ(voltage_mv, 0)
get_cpu_count();
if (!arg
|| !isdigit(arg[0])
|| strlen(arg) >=2
|| atoi(&arg[0])==0
|| (unsigned int)atoi(&arg[0])>info.cpu_count)
{
obj->data.cpu_index=1;
ERR("voltage_mv: Invalid CPU number or you don't have that many CPUs! Displaying voltage for CPU 1.");
}
else
{
obj->data.cpu_index=atoi(&arg[0]);
}
END OBJ(voltage_v, 0)
get_cpu_count();
if (!arg
|| !isdigit(arg[0])
|| strlen(arg) >=2
|| atoi(&arg[0])==0
|| (unsigned int)atoi(&arg[0])>info.cpu_count)
{
obj->data.cpu_index=1;
ERR("voltage_v: Invalid CPU number or you don't have that many CPUs! Displaying voltage for CPU 1.");
}
else
{
obj->data.cpu_index=atoi(&arg[0]);
}
#else
END OBJ(freq, 0);
END OBJ(freq_g, 0);
@ -3128,6 +3160,13 @@ static void generate_text_internal(char *p, int p_max_size, struct text_object *
OBJ(freq_g) {
get_freq(p, p_max_size, "%'.2f", 1000, obj->data.cpu_index); /* pk */
}
OBJ(voltage_mv) {
get_voltage(p, p_max_size, "%.0f", 1, obj->data.cpu_index); /* ptarjan */
}
OBJ(voltage_v) {
get_voltage(p, p_max_size, "%'.3f", 1000, obj->data.cpu_index); /* ptarjan */
}
OBJ(freq_dyn) {
if (use_spacer) {
get_freq_dynamic(p, 6, "%.0f ", 1 ); /* pk */

1
src/conky.h
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@ -463,6 +463,7 @@ void update_running_processes(void);
void update_i8k(void);
void get_freq( char *, size_t, char *, int, unsigned int ); /* pk */
void get_freq_dynamic( char *, size_t, char *, int ); /* pk */
void get_voltage(char *, size_t, char *, int, unsigned int ); /* ptarjan */
void update_load_average();
int open_i2c_sensor(const char *dev, const char *type, int n, int *div,
char *devtype);

78
src/linux.c
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@ -918,6 +918,84 @@ void get_freq( char * p_client_buffer, size_t client_buffer_size, char * p_forma
return;
}
#define CPUFREQ_VOLTAGE "cpufreq/scaling_voltages"
/* return cpu voltage in mV (use divisor=1) or V (use divisor=1000) */
void get_voltage( char * p_client_buffer, size_t client_buffer_size, char * p_format, int divisor, unsigned int cpu )
{
/* /sys/devices/system/cpu/cpu0/cpufreq/scaling_voltages looks
something like this:
# frequency voltage
1800000 1340
1600000 1292
1400000 1100
1200000 988
1000000 1116
800000 1004
600000 988
*/
/* Peter Tarjan (ptarjan@citromail.hu) */
FILE *f;
char s[256];
int freq = 0;
int voltage = 0;
char current_freq_file[128];
int freq_comp = 0;
/* build the voltage file name */
cpu--;
snprintf(current_freq_file, 127, "%s/cpu%d/%s",
CPUFREQ_PREFIX, cpu, CPUFREQ_POSTFIX);
if ( !p_client_buffer || client_buffer_size <= 0 || !p_format || divisor <= 0 )
return;
/* read the current cpu frequency from the /sys node */
f = fopen(current_freq_file, "r");
if (f) {
if (fgets(s, sizeof(s), f)) {
s[strlen(s)-1] = '\0';
freq = strtod(s, NULL);
}
fclose(f);
}
else
{
ERR("voltage: No %s.", current_freq_file);
fclose(f);
return;
}
snprintf(current_freq_file, 127, "%s/cpu%d/%s",
CPUFREQ_PREFIX, cpu, CPUFREQ_VOLTAGE);
/* use the current cpu frequency to find the corresponding voltage */
f = fopen(current_freq_file, "r");
if (f)
{
while (!feof(f))
{
char line[256];
if (fgets(line, 255, f) == NULL) break;
sscanf(line, "%d %d", &freq_comp, &voltage);
if(freq_comp == freq) break;
}
fclose(f);
}
else
{
ERR("voltage: No %s.", current_freq_file);
fclose(f);
return;
}
snprintf( p_client_buffer, client_buffer_size, p_format, (float)voltage/divisor );
return;
}
#define ACPI_FAN_DIR "/proc/acpi/fan/"