)
#include I(REQUEST_END)
+#ifdef ENABLE_EVENTS_COUNTERINFO_V6
/*
* Not available for counter_info_version >= 0x8, use
* run_instruction_cycles_by_partition(0x100) instead.
__count(0x10, 8, cycles)
)
#include I(REQUEST_END)
+#endif
#define REQUEST_NAME system_performance_capabilities
#define REQUEST_NUM 0x40
)
#include I(REQUEST_END)
+#ifdef ENABLE_EVENTS_COUNTERINFO_V6
#define REQUEST_NAME processor_bus_utilization_abc_links
#define REQUEST_NUM 0x50
#define REQUEST_IDX_KIND "hw_chip_id=?"
__count(0x28, 8, instructions_completed)
)
#include I(REQUEST_END)
+#endif
/* Processor_core_power_mode (0x95) skipped, no counters */
/* Affinity_domain_information_by_virtual_processor (0xA0) skipped,
.attrs = format_attrs,
};
-static const struct attribute_group event_group = {
+static struct attribute_group event_group = {
.name = "events",
- .attrs = hv_gpci_event_attrs,
+ /* .attrs is set in init */
};
#define HV_CAPS_ATTR(_name, _format) \
int r;
unsigned long hret;
struct hv_perf_caps caps;
+ struct hv_gpci_request_buffer *arg;
hv_gpci_assert_offsets_correct();
/* sampling not supported */
h_gpci_pmu.capabilities |= PERF_PMU_CAP_NO_INTERRUPT;
+ arg = (void *)get_cpu_var(hv_gpci_reqb);
+ memset(arg, 0, HGPCI_REQ_BUFFER_SIZE);
+
+ /*
+ * hcall H_GET_PERF_COUNTER_INFO populates the output
+ * counter_info_version value based on the system hypervisor.
+ * Pass the counter request 0x10 corresponds to request type
+ * 'Dispatch_timebase_by_processor', to get the supported
+ * counter_info_version.
+ */
+ arg->params.counter_request = cpu_to_be32(0x10);
+
+ r = plpar_hcall_norets(H_GET_PERF_COUNTER_INFO,
+ virt_to_phys(arg), HGPCI_REQ_BUFFER_SIZE);
+ if (r) {
+ pr_devel("hcall failed, can't get supported counter_info_version: 0x%x\n", r);
+ arg->params.counter_info_version_out = 0x8;
+ }
+
+ /*
+ * Use counter_info_version_out value to assign
+ * required hv-gpci event list.
+ */
+ if (arg->params.counter_info_version_out >= 0x8)
+ event_group.attrs = hv_gpci_event_attrs;
+ else
+ event_group.attrs = hv_gpci_event_attrs_v6;
+
+ put_cpu_var(hv_gpci_reqb);
+
r = perf_pmu_register(&h_gpci_pmu, h_gpci_pmu.name, -1);
if (r)
return r;
#define REQUEST_(r_name, r_value, r_idx_1, r_fields) \
r_fields
+/* Generate event list for platforms with counter_info_version 0x6 or below */
+static __maybe_unused struct attribute *hv_gpci_event_attrs_v6[] = {
+#include REQUEST_FILE
+ NULL
+};
+
+/*
+ * Based on getPerfCountInfo v1.018 documentation, some of the hv-gpci
+ * events were deprecated for platform firmware that supports
+ * counter_info_version 0x8 or above.
+ * Those deprecated events are still part of platform firmware that
+ * support counter_info_version 0x6 and below. As per the getPerfCountInfo
+ * v1.018 documentation there is no counter_info_version 0x7.
+ * Undefining macro ENABLE_EVENTS_COUNTERINFO_V6, to disable the addition of
+ * deprecated events in "hv_gpci_event_attrs" attribute group, for platforms
+ * that supports counter_info_version 0x8 or above.
+ */
+#undef ENABLE_EVENTS_COUNTERINFO_V6
+
+/* Generate event list for platforms with counter_info_version 0x8 or above*/
static __maybe_unused struct attribute *hv_gpci_event_attrs[] = {
#include REQUEST_FILE
NULL