perfmon: new perfmon plugin

Type: feature
Change-Id: I2c14f82393d11fc05c6d229f5c58603ab5c0f14d
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 172 insertions, 0 deletions

diff --git a/src/plugins/perfmon/perfmon.h b/src/plugins/perfmon/perfmon.h
new file mode 100644
index 00000000000..61e44ea43d3
--- /dev/null
+++ b/src/plugins/perfmon/perfmon.h
@@ -0,0 +1,172 @@
+/*
+ * 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.
+ */
+
+#ifndef __perfmon_perfmon_h
+#define __perfmon_perfmon_h
+
+#include <linux/perf_event.h>
+#include <vppinfra/clib.h>
+#include <vppinfra/format.h>
+#include <vppinfra/error.h>
+#include <vlib/vlib.h>
+
+#define PERF_MAX_EVENTS 7 /* 3 fixed and 4 programmable */
+
+typedef enum
+{
+  PERFMON_BUNDLE_TYPE_UNKNOWN,
+  PERFMON_BUNDLE_TYPE_NODE,
+  PERFMON_BUNDLE_TYPE_THREAD,
+  PERFMON_BUNDLE_TYPE_SYSTEM,
+} perfmon_bundle_type_t;
+
+typedef struct
+{
+  u32 type_from_instance : 1;
+  u32 exclude_kernel : 1;
+  union
+  {
+    u32 type;
+    u32 instance_type;
+  };
+  u64 config;
+  char *name;
+  char *description;
+} perfmon_event_t;
+
+typedef struct
+{
+  u32 type;
+  int cpu;
+  pid_t pid;
+  char *name;
+} perfmon_instance_t;
+
+typedef struct
+{
+  char *name;
+  perfmon_instance_t *instances;
+} perfmon_instance_type_t;
+
+struct perfmon_source;
+vlib_node_function_t perfmon_dispatch_wrapper;
+
+typedef clib_error_t *(perfmon_source_init_fn_t) (vlib_main_t *vm,
+						  struct perfmon_source *);
+typedef struct perfmon_source
+{
+  char *name;
+  char *description;
+  struct perfmon_source *next;
+  perfmon_event_t *events;
+  u32 n_events;
+  perfmon_instance_type_t *instances_by_type;
+  format_function_t *format_config;
+  perfmon_source_init_fn_t *init_fn;
+} perfmon_source_t;
+
+struct perfmon_bundle;
+typedef clib_error_t *(perfmon_bundle_init_fn_t) (vlib_main_t *vm,
+						  struct perfmon_bundle *);
+typedef struct perfmon_bundle
+{
+  char *name;
+  char *description;
+  char *source;
+  char *footer;
+  perfmon_bundle_type_t type;
+  u32 events[PERF_MAX_EVENTS];
+  u32 n_events;
+
+  perfmon_bundle_init_fn_t *init_fn;
+
+  char **column_headers;
+  format_function_t *format_fn;
+
+  /* do not set manually */
+  perfmon_source_t *src;
+  struct perfmon_bundle *next;
+} perfmon_bundle_t;
+
+typedef struct
+{
+  u64 nr;
+  u64 time_enabled;
+  u64 time_running;
+  u64 value[PERF_MAX_EVENTS];
+} perfmon_reading_t;
+
+typedef struct
+{
+  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
+  u64 n_calls;
+  u64 n_packets;
+  u64 value[PERF_MAX_EVENTS];
+} perfmon_node_stats_t;
+
+typedef struct
+{
+  u8 n_events;
+  u16 n_nodes;
+  perfmon_node_stats_t *node_stats;
+  struct perf_event_mmap_page *mmap_pages[PERF_MAX_EVENTS];
+} perfmon_thread_runtime_t;
+
+typedef struct
+{
+  perfmon_thread_runtime_t *thread_runtimes;
+  perfmon_bundle_t *bundles;
+  uword *bundle_by_name;
+  perfmon_source_t *sources;
+  uword *source_by_name;
+  perfmon_bundle_t *active_bundle;
+  int is_running;
+  int *group_fds;
+  int *fds_to_close;
+  perfmon_instance_type_t *default_instance_type;
+  perfmon_instance_type_t *active_instance_type;
+} perfmon_main_t;
+
+extern perfmon_main_t perfmon_main;
+
+#define PERFMON_REGISTER_SOURCE(x)                                            \
+  perfmon_source_t __perfmon_source_##x;                                      \
+  static void __clib_constructor __perfmon_source_registration_##x (void)     \
+  {                                                                           \
+    perfmon_main_t *pm = &perfmon_main;                                       \
+    __perfmon_source_##x.next = pm->sources;                                  \
+    pm->sources = &__perfmon_source_##x;                                      \
+  }                                                                           \
+  perfmon_source_t __perfmon_source_##x
+
+#define PERFMON_REGISTER_BUNDLE(x)                                            \
+  perfmon_bundle_t __perfmon_bundle_##x;                                      \
+  static void __clib_constructor __perfmon_bundle_registration_##x (void)     \
+  {                                                                           \
+    perfmon_main_t *pm = &perfmon_main;                                       \
+    __perfmon_bundle_##x.next = pm->bundles;                                  \
+    pm->bundles = &__perfmon_bundle_##x;                                      \
+  }                                                                           \
+  perfmon_bundle_t __perfmon_bundle_##x
+
+void perfmon_reset (vlib_main_t *vm);
+clib_error_t *perfmon_set (vlib_main_t *vm, perfmon_bundle_t *);
+clib_error_t *perfmon_start (vlib_main_t *vm);
+clib_error_t *perfmon_stop (vlib_main_t *vm);
+
+#define PERFMON_STRINGS(...)                                                  \
+  (char *[]) { __VA_ARGS__, 0 }
+
+#endif