X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvlib%2Fthreads.h;h=71b5d0c82613fb00ca5dd104c37d809ec6e74ac3;hb=5d64c786;hp=a032311c6892e0f917452f6962407fa6f6d50900;hpb=80f54e20270ed0628ee725e3e3c515731a0188f2;p=vpp.git

diff --git a/src/vlib/threads.h b/src/vlib/threads.h
index a032311c689..71b5d0c8261 100644
--- a/src/vlib/threads.h
+++ b/src/vlib/threads.h
@@ -62,7 +62,7 @@ typedef struct vlib_thread_registration_
 #define VLIB_CPU_MASK (VLIB_MAX_CPUS - 1)	/* 0x3f, max */
 #define VLIB_OFFSET_MASK (~VLIB_CPU_MASK)
 
-#define VLIB_LOG2_THREAD_STACK_SIZE (20)
+#define VLIB_LOG2_THREAD_STACK_SIZE (21)
 #define VLIB_THREAD_STACK_SIZE (1<<VLIB_LOG2_THREAD_STACK_SIZE)
 
 typedef enum
@@ -102,9 +102,15 @@ typedef struct
   vlib_thread_registration_t *registration;
   u8 *name;
   u64 barrier_sync_count;
+  u8 barrier_elog_enabled;
+  const char *barrier_caller;
+  const char *barrier_context;
+  volatile u32 *node_reforks_required;
 
   long lwp;
-  int lcore_id;
+  int cpu_id;
+  int core_id;
+  int socket_id;
   pthread_t thread_id;
 } vlib_worker_thread_t;
 
@@ -140,36 +146,42 @@ typedef struct
 }
 vlib_frame_queue_t;
 
+typedef struct
+{
+  vlib_frame_queue_elt_t **handoff_queue_elt_by_thread_index;
+  vlib_frame_queue_t **congested_handoff_queue_by_thread_index;
+} vlib_frame_queue_per_thread_data_t;
+
 typedef struct
 {
   u32 node_index;
+  u32 frame_queue_nelts;
+  u32 queue_hi_thresh;
+
   vlib_frame_queue_t **vlib_frame_queues;
+  vlib_frame_queue_per_thread_data_t *per_thread_data;
 
   /* for frame queue tracing */
   frame_queue_trace_t *frame_queue_traces;
   frame_queue_nelt_counter_t *frame_queue_histogram;
 } vlib_frame_queue_main_t;
 
+typedef struct
+{
+  uword node_index;
+  uword type_opaque;
+  uword data;
+} vlib_process_signal_event_mt_args_t;
+
 /* Called early, in thread 0's context */
 clib_error_t *vlib_thread_init (vlib_main_t * vm);
 
-vlib_worker_thread_t *vlib_alloc_thread (vlib_main_t * vm);
-
 int vlib_frame_queue_enqueue (vlib_main_t * vm, u32 node_runtime_index,
 			      u32 frame_queue_index, vlib_frame_t * frame,
 			      vlib_frame_queue_msg_type_t type);
 
-int vlib_frame_queue_dequeue (int thread_id,
-			      vlib_main_t * vm, vlib_node_main_t * nm);
-
-u64 dispatch_node (vlib_main_t * vm,
-		   vlib_node_runtime_t * node,
-		   vlib_node_type_t type,
-		   vlib_node_state_t dispatch_state,
-		   vlib_frame_t * frame, u64 last_time_stamp);
-
-u64 dispatch_pending_node (vlib_main_t * vm,
-			   vlib_pending_frame_t * p, u64 last_time_stamp);
+int
+vlib_frame_queue_dequeue (vlib_main_t * vm, vlib_frame_queue_main_t * fqm);
 
 void vlib_worker_thread_node_runtime_update (void);
 
@@ -189,15 +201,24 @@ u32 vlib_frame_queue_main_init (u32 node_index, u32 frame_queue_nelts);
 #define BARRIER_SYNC_TIMEOUT (1.0)
 #endif
 
-void vlib_worker_thread_barrier_sync (vlib_main_t * vm);
+#define vlib_worker_thread_barrier_sync(X) {vlib_worker_threads[0].barrier_caller=__FUNCTION__;vlib_worker_thread_barrier_sync_int(X);}
+
+void vlib_worker_thread_barrier_sync_int (vlib_main_t * vm);
 void vlib_worker_thread_barrier_release (vlib_main_t * vm);
+void vlib_worker_thread_node_refork (void);
+
+static_always_inline uword
+vlib_get_thread_index (void)
+{
+  return __os_thread_index;
+}
 
 always_inline void
 vlib_smp_unsafe_warning (void)
 {
   if (CLIB_DEBUG > 0)
     {
-      if (os_get_cpu_number ())
+      if (vlib_get_thread_index ())
 	fformat (stderr, "%s: SMP unsafe warning...\n", __FUNCTION__);
     }
 }
@@ -210,18 +231,6 @@ typedef enum
 
 void vlib_worker_thread_fork_fixup (vlib_fork_fixup_t which);
 
-static inline void
-vlib_worker_thread_barrier_check (void)
-{
-  if (PREDICT_FALSE (*vlib_worker_threads->wait_at_barrier))
-    {
-      clib_smp_atomic_add (vlib_worker_threads->workers_at_barrier, 1);
-      while (*vlib_worker_threads->wait_at_barrier)
-	;
-      clib_smp_atomic_add (vlib_worker_threads->workers_at_barrier, -1);
-    }
-}
-
 #define foreach_vlib_main(body)                         \
 do {                                                    \
   vlib_main_t ** __vlib_mains = 0, *this_vlib_main;     \
@@ -230,6 +239,8 @@ do {                                                    \
   for (ii = 0; ii < vec_len (vlib_mains); ii++)         \
     {                                                   \
       this_vlib_main = vlib_mains[ii];                  \
+      ASSERT (ii == 0 ||                                \
+	      this_vlib_main->parked_at_barrier == 1);  \
       if (this_vlib_main)                               \
         vec_add1 (__vlib_mains, this_vlib_main);        \
     }                                                   \
@@ -261,8 +272,8 @@ typedef enum
 typedef struct
 {
   clib_error_t *(*vlib_launch_thread_cb) (void *fp, vlib_worker_thread_t * w,
-					  unsigned lcore_id);
-  clib_error_t *(*vlib_thread_set_lcore_cb) (u32 thread, u16 lcore);
+					  unsigned cpu_id);
+  clib_error_t *(*vlib_thread_set_lcore_cb) (u32 thread, u16 cpu);
 } vlib_thread_callbacks_t;
 
 typedef struct
@@ -302,7 +313,7 @@ typedef struct
   u8 *thread_prefix;
 
   /* main thread lcore */
-  u8 main_lcore;
+  u32 main_lcore;
 
   /* Bitmap of available CPU cores */
   uword *cpu_core_bitmap;
@@ -329,6 +340,8 @@ typedef struct
 
 extern vlib_thread_main_t vlib_thread_main;
 
+#include <vlib/global_funcs.h>
+
 #define VLIB_REGISTER_THREAD(x,...)                     \
   __VA_ARGS__ vlib_thread_registration_t x;             \
 static void __vlib_add_thread_registration_##x (void)   \
@@ -339,6 +352,13 @@ static void __vlib_add_thread_registration_##x (void)   \
   x.next = tm->next;                                    \
   tm->next = &x;                                        \
 }                                                       \
+static void __vlib_rm_thread_registration_##x (void)    \
+  __attribute__((__destructor__)) ;                     \
+static void __vlib_rm_thread_registration_##x (void)    \
+{                                                       \
+  vlib_thread_main_t * tm = &vlib_thread_main;          \
+  VLIB_REMOVE_FROM_LINKED_LIST (tm->next, &x, next);    \
+}                                                       \
 __VA_ARGS__ vlib_thread_registration_t x
 
 always_inline u32
@@ -348,21 +368,116 @@ vlib_num_workers ()
 }
 
 always_inline u32
-vlib_get_worker_cpu_index (u32 worker_index)
+vlib_get_worker_thread_index (u32 worker_index)
 {
   return worker_index + 1;
 }
 
 always_inline u32
-vlib_get_worker_index (u32 cpu_index)
+vlib_get_worker_index (u32 thread_index)
 {
-  return cpu_index - 1;
+  return thread_index - 1;
 }
 
 always_inline u32
 vlib_get_current_worker_index ()
 {
-  return os_get_cpu_number () - 1;
+  return vlib_get_thread_index () - 1;
+}
+
+static inline void
+vlib_worker_thread_barrier_check (void)
+{
+  if (PREDICT_FALSE (*vlib_worker_threads->wait_at_barrier))
+    {
+      vlib_main_t *vm = vlib_get_main ();
+      u32 thread_index = vm->thread_index;
+      f64 t = vlib_time_now (vm);
+
+      if (PREDICT_FALSE (vlib_worker_threads->barrier_elog_enabled))
+	{
+	  vlib_worker_thread_t *w = vlib_worker_threads + thread_index;
+	  /* *INDENT-OFF* */
+	  ELOG_TYPE_DECLARE (e) = {
+	    .format = "barrier-wait-thread-%d",
+	    .format_args = "i4",
+	  };
+	  /* *INDENT-ON* */
+
+	  struct
+	  {
+	    u32 thread_index;
+	  } __clib_packed *ed;
+
+	  ed = ELOG_TRACK_DATA (&vlib_global_main.elog_main, e,
+				w->elog_track);
+	  ed->thread_index = thread_index;
+	}
+
+      clib_smp_atomic_add (vlib_worker_threads->workers_at_barrier, 1);
+      if (CLIB_DEBUG > 0)
+	{
+	  vm = vlib_get_main ();
+	  vm->parked_at_barrier = 1;
+	}
+      while (*vlib_worker_threads->wait_at_barrier)
+	;
+      if (CLIB_DEBUG > 0)
+	vm->parked_at_barrier = 0;
+      clib_smp_atomic_add (vlib_worker_threads->workers_at_barrier, -1);
+
+      if (PREDICT_FALSE (*vlib_worker_threads->node_reforks_required))
+	{
+	  if (PREDICT_FALSE (vlib_worker_threads->barrier_elog_enabled))
+	    {
+	      t = vlib_time_now (vm) - t;
+	      vlib_worker_thread_t *w = vlib_worker_threads + thread_index;
+              /* *INDENT-OFF* */
+              ELOG_TYPE_DECLARE (e) = {
+                .format = "barrier-refork-thread-%d",
+                .format_args = "i4",
+              };
+              /* *INDENT-ON* */
+
+	      struct
+	      {
+		u32 thread_index;
+	      } __clib_packed *ed;
+
+	      ed = ELOG_TRACK_DATA (&vlib_global_main.elog_main, e,
+				    w->elog_track);
+	      ed->thread_index = thread_index;
+	    }
+
+	  vlib_worker_thread_node_refork ();
+	  clib_smp_atomic_add (vlib_worker_threads->node_reforks_required,
+			       -1);
+	  while (*vlib_worker_threads->node_reforks_required)
+	    ;
+	}
+      if (PREDICT_FALSE (vlib_worker_threads->barrier_elog_enabled))
+	{
+	  t = vlib_time_now (vm) - t;
+	  vlib_worker_thread_t *w = vlib_worker_threads + thread_index;
+	  /* *INDENT-OFF* */
+	  ELOG_TYPE_DECLARE (e) = {
+	    .format = "barrier-released-thread-%d: %dus",
+	    .format_args = "i4i4",
+	  };
+	  /* *INDENT-ON* */
+
+	  struct
+	  {
+	    u32 thread_index;
+	    u32 duration;
+	  } __clib_packed *ed;
+
+	  ed = ELOG_TRACK_DATA (&vlib_global_main.elog_main, e,
+				w->elog_track);
+	  ed->thread_index = thread_index;
+	  ed->duration = (int) (1000000.0 * t);
+	}
+    }
 }
 
 always_inline vlib_main_t *
@@ -376,6 +491,14 @@ vlib_get_worker_vlib_main (u32 worker_index)
   return vm;
 }
 
+static inline u8
+vlib_thread_is_main_w_barrier (void)
+{
+  return (!vlib_num_workers ()
+	  || ((vlib_get_thread_index () == 0
+	       && vlib_worker_threads->wait_at_barrier[0])));
+}
+
 static inline void
 vlib_put_frame_queue_elt (vlib_frame_queue_elt_t * hf)
 {
@@ -464,8 +587,15 @@ vlib_get_worker_handoff_queue_elt (u32 frame_queue_index,
   return elt;
 }
 
+u8 *vlib_thread_stack_init (uword thread_index);
 int vlib_thread_cb_register (struct vlib_main_t *vm,
 			     vlib_thread_callbacks_t * cb);
+extern void *rpc_call_main_thread_cb_fn;
+
+void
+vlib_process_signal_event_mt_helper (vlib_process_signal_event_mt_args_t *
+				     args);
+void vlib_rpc_call_main_thread (void *function, u8 * args, u32 size);
 
 #endif /* included_vlib_threads_h */