X86_64 perf counter plugin

Change-Id: Ie5a00c15ee9536cc61afab57f6cadc1aa1972f3c
Signed-off-by: Dave Barach <dave@barachs.net>

1 files changed, 145 insertions, 0 deletions

diff --git a/src/plugins/perfmon/perfmon.h b/src/plugins/perfmon/perfmon.h
new file mode 100644
index 00000000000..47ee471d5fc
--- /dev/null
+++ b/src/plugins/perfmon/perfmon.h
@@ -0,0 +1,145 @@
+/*
+ * perfmon.h - performance monitor
+ *
+ * Copyright (c) 2018 Cisco Systems 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 __included_perfmon_h__
+#define __included_perfmon_h__
+
+#include <vnet/vnet.h>
+#include <vnet/ip/ip.h>
+#include <vnet/ethernet/ethernet.h>
+#include <vlib/log.h>
+
+#include <vppinfra/hash.h>
+#include <vppinfra/error.h>
+
+#include <linux/perf_event.h>
+
+#define foreach_perfmon_event                                           \
+_(PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES, "cpu-cycles")           \
+_(PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS, "instructions")       \
+_(PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_REFERENCES,                   \
+  "cache-references")                                                   \
+_(PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES, "cache-misses")       \
+_(PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS, "branches")    \
+ _(PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES, "branch-misses")    \
+_(PERF_TYPE_HARDWARE, PERF_COUNT_HW_BUS_CYCLES, "bus-cycles")           \
+_(PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND,            \
+  "stall-frontend")                                                     \
+_(PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_BACKEND,             \
+  "stall-backend")                                                      \
+_(PERF_TYPE_HARDWARE, PERF_COUNT_HW_REF_CPU_CYCLES, "ref-cpu-cycles")   \
+_(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS, "page-faults")         \
+_(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CONTEXT_SWITCHES, "context-switches") \
+_(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_MIGRATIONS, "cpu-migrations")   \
+_(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MIN, "minor-pagefaults") \
+_(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MAJ, "major-pagefaults") \
+_(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_EMULATION_FAULTS, "emulation-faults")
+
+typedef struct
+{
+  char *name;
+  int pe_type;
+  int pe_config;
+} perfmon_event_config_t;
+
+typedef enum
+{
+  PERFMON_STATE_OFF = 0,
+  PERFMON_STATE_RUNNING,
+} perfmon_state_t;
+
+typedef struct
+{
+  u8 *thread_and_node_name;
+  u8 **counter_names;
+  u64 *counter_values;
+  u64 *vectors_this_counter;
+} perfmon_capture_t;
+
+typedef struct
+{
+  u32 cpuid;
+  const char **table;
+} perfmon_cpuid_and_table_t;
+
+typedef struct
+{
+  u8 *name;
+  u8 *value;
+} name_value_pair_t;
+
+typedef struct
+{
+  /* API message ID base */
+  u16 msg_id_base;
+
+  /* on/off switch for the periodic function */
+  volatile u8 state;
+
+  /* capture pool, hash table */
+  perfmon_capture_t *capture_pool;
+  uword *capture_by_thread_and_node_name;
+
+  /* CPU-specific event tables, hash table of selected table (if any)  */
+  perfmon_cpuid_and_table_t *perfmon_tables;
+  uword *perfmon_table;
+
+  /* vector of events to collect */
+  perfmon_event_config_t *events_to_collect;
+
+  /* Base indices of synthetic event tuples */
+  u32 ipc_event_index;
+  u32 mispredict_event_index;
+
+  /* Length of time to capture a single event */
+  f64 timeout_interval;
+
+  /* Current event (index) being collected */
+  u32 current_event;
+  u32 *rdpmc_indices;
+  /* mmap base / size of (mapped) struct perf_event_mmap_page */
+  u8 **perf_event_pages;
+  u32 page_size;
+
+  /* Current perf_event file descriptors, per thread */
+  int *pm_fds;
+
+  /* Logging */
+  vlib_log_class_t log_class;
+
+  /* convenience */
+  vlib_main_t *vlib_main;
+  vnet_main_t *vnet_main;
+  ethernet_main_t *ethernet_main;
+} perfmon_main_t;
+
+extern perfmon_main_t perfmon_main;
+
+extern vlib_node_registration_t perfmon_periodic_node;
+uword *perfmon_parse_table (perfmon_main_t * pm, char *path, char *filename);
+
+/* Periodic function events */
+#define PERFMON_START 1
+
+#endif /* __included_perfmon_h__ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */