1 // SPDX-License-Identifier: GPL-2.0-only
26 #include <asm/intel-family.h>
49 /* Handles CPU hotplug on multi-socket systems.
54  * per-domain level.
58 	struct rapl_package *rp;  in rapl_cpu_online()  local
60 	rp = rapl_find_package_domain(cpu, &rapl_msr_priv);  in rapl_cpu_online()
61 	if (!rp) {  in rapl_cpu_online()
62 		rp = rapl_add_package(cpu, &rapl_msr_priv);  in rapl_cpu_online()
63 		if (IS_ERR(rp))  in rapl_cpu_online()
64 			return PTR_ERR(rp);  in rapl_cpu_online()
66 	cpumask_set_cpu(cpu, &rp->cpumask);  in rapl_cpu_online()
72 	struct rapl_package *rp;  in rapl_cpu_down_prep()  local
75 	rp = rapl_find_package_domain(cpu, &rapl_msr_priv);  in rapl_cpu_down_prep()
76 	if (!rp)  in rapl_cpu_down_prep()
79 	cpumask_clear_cpu(cpu, &rp->cpumask);  in rapl_cpu_down_prep()
80 	lead_cpu = cpumask_first(&rp->cpumask);  in rapl_cpu_down_prep()
82 		rapl_remove_package(rp);  in rapl_cpu_down_prep()
83 	else if (rp->lead_cpu == cpu)  in rapl_cpu_down_prep()
84 		rp->lead_cpu = lead_cpu;  in rapl_cpu_down_prep()
90 	u32 msr = (u32)ra->reg;  in rapl_msr_read_raw()
92 	if (rdmsrl_safe_on_cpu(cpu, msr, &ra->value)) {  in rapl_msr_read_raw()
93 		pr_debug("failed to read msr 0x%x on cpu %d\n", msr, cpu);  in rapl_msr_read_raw()
94 		return -EIO;  in rapl_msr_read_raw()
96 	ra->value &= ra->mask;  in rapl_msr_read_raw()
103 	u32 msr = (u32)ra->reg;  in rapl_msr_update_func()
106 	ra->err = rdmsrl_safe(msr, &val);  in rapl_msr_update_func()
107 	if (ra->err)  in rapl_msr_update_func()
110 	val &= ~ra->mask;  in rapl_msr_update_func()
111 	val |= ra->value;  in rapl_msr_update_func()
113 	ra->err = wrmsrl_safe(msr, val);  in rapl_msr_update_func()
124 	return ra->err;  in rapl_msr_write_raw()
148 	rapl_msr_priv.control_type = powercap_register_control_type(NULL, "intel-rapl", NULL);  in rapl_msr_probe()