@@ -708,6 +708,44 @@ void start_gather_func(int argc, char *argv[])
pause();
}
+static void calculate_hwp_activity_window(const xc_hwp_para_t *hwp,
+ unsigned int *activity_window,
+ const char **units)
+{
+ unsigned int mantissa = hwp->activity_window & HWP_ACT_WINDOW_MANTISSA_MASK;
+ unsigned int exponent =
+ (hwp->activity_window >> HWP_ACT_WINDOW_EXPONENT_SHIFT) &
+ HWP_ACT_WINDOW_EXPONENT_MASK;
+ unsigned int multiplier = 1;
+ unsigned int i;
+
+ if ( hwp->activity_window == 0 )
+ {
+ *units = "hardware selected";
+ *activity_window = 0;
+
+ return;
+ }
+
+ if ( exponent >= 6 )
+ {
+ *units = "s";
+ exponent -= 6;
+ }
+ else if ( exponent >= 3 )
+ {
+ *units = "ms";
+ exponent -= 3;
+ }
+ else
+ *units = "us";
+
+ for ( i = 0; i < exponent; i++ )
+ multiplier *= 10;
+
+ *activity_window = mantissa * multiplier;
+}
+
/* print out parameters about cpu frequency */
static void print_cpufreq_para(int cpuid, struct xc_get_cpufreq_para *p_cpufreq)
{
@@ -773,6 +811,33 @@ static void print_cpufreq_para(int cpuid, struct xc_get_cpufreq_para *p_cpufreq)
p_cpufreq->scaling_cur_freq);
}
+ if ( strcmp(p_cpufreq->scaling_governor, XEN_HWP_GOVERNOR) == 0 )
+ {
+ const xc_hwp_para_t *hwp = &p_cpufreq->u.hwp_para;
+
+ printf("hwp variables :\n");
+ printf(" hardware limits : lowest [%u] most_efficient [%u]\n",
+ hwp->lowest, hwp->most_efficient);
+ printf(" : guaranteed [%u] highest [%u]\n",
+ hwp->guaranteed, hwp->highest);
+ printf(" configured limits : min [%u] max [%u] energy_perf [%u]\n",
+ hwp->minimum, hwp->maximum, hwp->energy_perf);
+
+ if ( hwp->features & XEN_SYSCTL_HWP_FEAT_ACT_WINDOW )
+ {
+ unsigned int activity_window;
+ const char *units;
+
+ calculate_hwp_activity_window(hwp, &activity_window, &units);
+ printf(" : activity_window [%u %s]\n",
+ activity_window, units);
+ }
+
+ printf(" : desired [%u%s]\n",
+ hwp->desired,
+ hwp->desired ? "" : " hw autonomous");
+ }
+
printf("turbo mode : %s\n",
p_cpufreq->turbo_enabled ? "enabled" : "disabled or n/a");
printf("\n");
Print HWP-specific parameters. Some are always present, but others depend on hardware support. Signed-off-by: Jason Andryuk <jandryuk@gmail.com> --- v2: Style fixes Declare i outside loop Replace repearted hardware/configured limits with spaces Fixup for hw_ removal Use XEN_HWP_GOVERNOR Use HWP_ACT_WINDOW_EXPONENT_* Remove energy_perf hw autonomous - 0 doesn't mean autonomous --- tools/misc/xenpm.c | 65 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+)