usr.sbin/powerd/powerd.c

92 static int	set_freq(int freq);
260 set_freq(int freq)
263 	if (sysctl(freq_mib, 4, NULL, NULL, &freq, sizeof(freq))) {
272 get_freq_id(int freq, int *freqs, int numfreqs)
277 		if (freqs[i] < freq)
474 "usage: powerd [-v] [-a mode] [-b mode] [-i %%] [-m freq] [-M freq] [-n mode] [-p ival] [-r %%] [-s source] [-P pidfile]\n");
486 	int freq, curfreq, initfreq, *freqs, i, j, *mwatts, numfreqs, load;
578 	if (sysctlnametomib("dev.cpu.0.freq", freq_mib, &len))
622 	freq = initfreq = curfreq = get_freq();
624 	if (freq < 1)
625 		freq = 1;
653 				warn("error setting CPU freq %d",
663 				warn("error setting CPU freq %d",
730 			freq = freqs[numfreqs - 1];
731 			if (curfreq != freq) {
735 					    modes[acline_status], freq);
738 				if (set_freq(freq) != 0) {
739 					warn("error setting CPU freq %d",
740 					    freq);
749 			freq = freqs[0];
750 			if (curfreq != freq) {
754 					    modes[acline_status], freq);
757 				if (set_freq(freq) != 0) {
758 					warn("error setting CPU freq %d",
759 					    freq);
776 					freq *= 2;
778 					freq = freq * load / cpu_running_mark;
779 				if (freq > freqs[0])
780 					freq = freqs[0];
783 			    freq * 7 / 8, freqs, numfreqs)] *
785 				freq = freq * 7 / 8;
786 				if (freq < freqs[numfreqs - 1])
787 					freq = freqs[numfreqs - 1];
792 					freq *= 4;
794 					freq = freq * load * 2 / cpu_running_mark;
795 				if (freq > freqs[0] * 2)
796 					freq = freqs[0] * 2;
799 			    freq * 31 / 32, freqs, numfreqs)] *
801 				freq = freq * 31 / 32;
802 				if (freq < freqs[numfreqs - 1])
803 					freq = freqs[numfreqs - 1];
807 		    printf("load %3d%%, current freq %4d MHz (%2d), wanted freq %4d MHz\n",
808 			load, curfreq, i, freq);
810 		j = get_freq_id(freq, freqs, numfreqs);