platforms/pseries/pseries_energy.c

9  * This pseries platform device driver provides access to
36  * Routine to detect firmware support for hcall
52 	hypertas = of_get_property(rtas, "ibm,hypertas-functions", &length);  in check_for_h_best_energy()
60 		if (!strncmp("hcall-best-energy-1", s, 19)) {  in check_for_h_best_energy()
69 /* Helper Routines to convert between drc_index to cpu numbers */
82 	indexes = of_get_property(dn, "ibm,drc-indexes", NULL);  in cpu_to_drc_index()
85 	/* Convert logical cpu number to core number */  in cpu_to_drc_index()
90 	 * corresponding to core number i.  in cpu_to_drc_index()
114 	indexes = of_get_property(dn, "ibm,drc-indexes", NULL);  in drc_index_to_cpu()
119 	 * returned.  Search through the list to find the matching  in drc_index_to_cpu()
126 	/* Convert core number to logical cpu number */  in drc_index_to_cpu()
139  * pseries hypervisor call H_BEST_ENERGY provides hints to OS on
140  * preferred logical cpus to activate or deactivate for optimized
148 static ssize_t get_best_energy_list(char *page, int activate)  in get_best_energy_list()  argument
158 		return -ENOMEM;  in get_best_energy_list()
161 	if (activate)  in get_best_energy_list()
168 		return -EINVAL;  in get_best_energy_list()
174 		if ((cpu_online(cpu) && !activate) ||  in get_best_energy_list()
175 		    (!cpu_online(cpu) && activate))  in get_best_energy_list()
178 	if (s > page) { /* Something to show */  in get_best_energy_list()
179 		s--; /* Suppress last comma */  in get_best_energy_list()
184 	return s-page;  in get_best_energy_list()
188 					char *page, int activate)  in get_best_energy_data()  argument
195 	if (activate)  in get_best_energy_data()
199 				cpu_to_drc_index(dev->id),  in get_best_energy_data()
203 		return -EINVAL;  in get_best_energy_data()
238  *	Comma separated list of cpus to activate or deactivate
241  *	Per-cpu value of the hint
312 		sysfs_remove_file(&cpu_dev->kobj,  in pseries_energy_cleanup()
314 		sysfs_remove_file(&cpu_dev->kobj,  in pseries_energy_cleanup()