summaryrefslogtreecommitdiffstats
path: root/src/plugins/perfmon/intel/core.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/plugins/perfmon/intel/core.c')
-rw-r--r--src/plugins/perfmon/intel/core.c81
1 files changed, 81 insertions, 0 deletions
diff --git a/src/plugins/perfmon/intel/core.c b/src/plugins/perfmon/intel/core.c
new file mode 100644
index 00000000000..b4267e8170c
--- /dev/null
+++ b/src/plugins/perfmon/intel/core.c
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2020 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <vnet/vnet.h>
+#include <perfmon/perfmon.h>
+#include <perfmon/intel/core.h>
+#include <linux/perf_event.h>
+
+static perfmon_event_t events[] = {
+#define _(event, umask, edge, any, inv, cmask, n, suffix, desc) \
+ [INTEL_CORE_E_##n##_##suffix] = { \
+ .type = PERF_TYPE_RAW, \
+ .config = PERF_INTEL_CODE (event, umask, edge, any, inv, cmask), \
+ .name = #n "." #suffix, \
+ .description = desc, \
+ },
+
+ foreach_perf_intel_core_event
+#undef _
+};
+
+u8 *
+format_intel_core_config (u8 *s, va_list *args)
+{
+ u64 config = va_arg (*args, u64);
+ u8 v;
+
+ s = format (s, "event=0x%02x, umask=0x%02x", config & 0xff,
+ (config >> 8) & 0xff);
+
+ if ((v = (config >> 18) & 1))
+ s = format (s, ", edge=%u", v);
+
+ if ((v = (config >> 19) & 1))
+ s = format (s, ", pc=%u", v);
+
+ if ((v = (config >> 21) & 1))
+ s = format (s, ", any=%u", v);
+
+ if ((v = (config >> 23) & 1))
+ s = format (s, ", inv=%u", v);
+
+ if ((v = (config >> 24) & 0xff))
+ s = format (s, ", cmask=0x%02x", v);
+
+ return s;
+}
+
+static clib_error_t *
+intel_core_init (vlib_main_t *vm, perfmon_source_t *src)
+{
+ u32 eax, ebx, ecx, edx;
+ if (__get_cpuid (0, &eax, &ebx, &ecx, &edx) == 0)
+ return clib_error_return (0, "unknown CPU (missing cpuid)");
+
+ // GenuineIntel
+ if (ebx != 0x756e6547 || ecx != 0x6c65746e || edx != 0x49656e69)
+ return clib_error_return (0, "not a IA-32 CPU");
+ return 0;
+}
+
+PERFMON_REGISTER_SOURCE (intel_core) = {
+ .name = "intel-core",
+ .description = "intel arch core events",
+ .events = events,
+ .n_events = ARRAY_LEN (events),
+ .init_fn = intel_core_init,
+ .format_config = format_intel_core_config,
+};