misc: add callback hooks and refactor pmc

Callbacks for monitoring and performance measurement:
- Add new callback list type, with context
- Add callbacks for API, CLI, and barrier sync
- Modify node dispatch callback to pass plugin-specific context
- Modify perfmon plugin to keep PMC samples local to the plugin
- Include process nodes in dispatch callback
- Pass dispatch function return value to callback

Type: refactor

Signed-off-by: Tom Seidenberg <tseidenb@cisco.com>
Change-Id: I28b06c58490611e08d76ff5b01b2347ba2109b22

1 files changed, 32 insertions, 6 deletions

diff --git a/src/plugins/perfmon/perfmon.h b/src/plugins/perfmon/perfmon.h
index 000e3c2849c..c8782023597 100644
--- a/src/plugins/perfmon/perfmon.h
+++ b/src/plugins/perfmon/perfmon.h
@@ -78,6 +78,32 @@ typedef struct
 
 typedef struct
 {
+  u64 ticks[2];
+  u64 vectors;
+} perfmon_counters_t;
+
+typedef struct
+{
+  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
+
+  /* Current counters */
+  u64 c[2];
+
+  /* Current perf_event file descriptors, per thread */
+  int pm_fds[2];
+
+  /* mmap base of mapped struct perf_event_mmap_page */
+  u8 *perf_event_pages[2];
+
+  u32 rdpmc_indices[2];
+
+  /* vector of counters by node index */
+  perfmon_counters_t *counters;
+
+} perfmon_thread_t;
+
+typedef struct
+{
   /* API message ID base */
   u16 msg_id_base;
 
@@ -112,17 +138,15 @@ typedef struct
   /* Current event (index) being collected */
   u32 current_event;
   int n_active;
-  u32 **rdpmc_indices;
-  /* mmap base / size of (mapped) struct perf_event_mmap_page */
-  u8 ***perf_event_pages;
+  /* mmap size of (mapped) struct perf_event_mmap_page */
   u32 page_size;
 
-  /* Current perf_event file descriptors, per thread */
-  int **pm_fds;
-
   /* thread bitmap */
   uword *thread_bitmap;
 
+  /* per-thread data */
+  perfmon_thread_t **threads;
+
   /* Logging */
   vlib_log_class_t log_class;
 
@@ -137,6 +161,8 @@ 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);
 
+uword unformat_processor_event (unformat_input_t * input, va_list * args);
+
 /* Periodic function events */
 #define PERFMON_START 1