1 // SPDX-License-Identifier: GPL-2.0
3 #include <asm/hvcall.h>
8 unsigned long hv_perf_caps_get(struct hv_perf_caps *caps)
12 struct hv_get_perf_counter_info_params params;
13 struct hv_gpci_system_performance_capabilities caps;
14 } __packed __aligned(sizeof(uint64_t));
18 .counter_request = cpu_to_be32(
19 HV_GPCI_system_performance_capabilities),
20 .starting_index = cpu_to_be32(-1),
21 .counter_info_version_in = 0,
25 r = plpar_hcall_norets(H_GET_PERF_COUNTER_INFO,
26 virt_to_phys(&arg), sizeof(arg));
31 pr_devel("capability_mask: 0x%x\n", arg.caps.capability_mask);
33 caps->version = arg.params.counter_info_version_out;
34 caps->collect_privileged = !!arg.caps.perf_collect_privileged;
35 caps->ga = !!(arg.caps.capability_mask & HV_GPCI_CM_GA);
36 caps->expanded = !!(arg.caps.capability_mask & HV_GPCI_CM_EXPANDED);
37 caps->lab = !!(arg.caps.capability_mask & HV_GPCI_CM_LAB);