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Diffstat (limited to 'src/plugins/perfmon/intel/core.c')
-rw-r--r--src/plugins/perfmon/intel/core.c50
1 files changed, 50 insertions, 0 deletions
diff --git a/src/plugins/perfmon/intel/core.c b/src/plugins/perfmon/intel/core.c
index 08a27b6a73f..5c4c336e2e8 100644
--- a/src/plugins/perfmon/intel/core.c
+++ b/src/plugins/perfmon/intel/core.c
@@ -16,6 +16,7 @@
#include <vnet/vnet.h>
#include <perfmon/perfmon.h>
#include <perfmon/intel/core.h>
+#include <perfmon/intel/dispatch_wrapper.h>
#include <linux/perf_event.h>
static perfmon_event_t events[] = {
@@ -95,6 +96,53 @@ intel_core_get_event_type (u32 event)
return PERFMON_EVENT_TYPE_GENERAL;
}
+static u8
+is_enough_counters (perfmon_bundle_t *b)
+{
+ u8 bl[PERFMON_EVENT_TYPE_MAX];
+ u8 cpu[PERFMON_EVENT_TYPE_MAX];
+
+ clib_memset (&bl, 0, sizeof (bl));
+ clib_memset (&cpu, 0, sizeof (cpu));
+
+ /* how many does this uarch support */
+ if (!clib_get_pmu_counter_count (&cpu[PERFMON_EVENT_TYPE_FIXED],
+ &cpu[PERFMON_EVENT_TYPE_GENERAL]))
+ return 0;
+
+ /* how many does the bundle require */
+ for (u16 i = 0; i < b->n_events; i++)
+ {
+ /* if source allows us to identify events, otherwise assume general */
+ if (b->src->get_event_type)
+ bl[b->src->get_event_type (b->events[i])]++;
+ else
+ bl[PERFMON_EVENT_TYPE_GENERAL]++;
+ }
+
+ /* consciously ignoring pseudo events here */
+ return cpu[PERFMON_EVENT_TYPE_GENERAL] >= bl[PERFMON_EVENT_TYPE_GENERAL] &&
+ cpu[PERFMON_EVENT_TYPE_FIXED] >= bl[PERFMON_EVENT_TYPE_FIXED];
+}
+
+u8
+intel_bundle_supported (perfmon_bundle_t *b)
+{
+ perfmon_cpu_supports_t *supports = b->cpu_supports;
+
+ if (!is_enough_counters (b))
+ return 0;
+
+ if (!b->cpu_supports)
+ return 1;
+
+ for (int i = 0; i < b->n_cpu_supports; ++i)
+ if (supports[i].cpu_supports ())
+ return 1;
+
+ return 0;
+}
+
PERFMON_REGISTER_SOURCE (intel_core) = {
.name = "intel-core",
.description = "intel arch core events",
@@ -103,4 +151,6 @@ PERFMON_REGISTER_SOURCE (intel_core) = {
.init_fn = intel_core_init,
.get_event_type = intel_core_get_event_type,
.format_config = format_intel_core_config,
+ .bundle_support = intel_bundle_supported,
+ .config_dispatch_wrapper = intel_config_dispatch_wrapper,
};