vlib: remove external thread management support

Now DPDK have API to register external threads so we can remove this
mess...

Type: improvement
Change-Id: I71a21f0cd94bd668aa406710c75a0bcc63fdc840
Signed-off-by: Damjan Marion <damarion@cisco.com>

2 files changed, 6 insertions, 53 deletions

diff --git a/src/vlib/threads.c b/src/vlib/threads.c
index 760aa8b5776..f4d95c45059 100644
--- a/src/vlib/threads.c
+++ b/src/vlib/threads.c
@@ -175,6 +175,7 @@ vlib_thread_init (vlib_main_t * vm)
   vlib_thread_main_t *tm = &vlib_thread_main;
   vlib_worker_thread_t *w;
   vlib_thread_registration_t *tr;
+  cpu_set_t cpuset;
   u32 n_vlib_mains = 1;
   u32 first_index = 1;
   u32 i;
@@ -223,17 +224,9 @@ vlib_thread_init (vlib_main_t * vm)
     tm->cpu_socket_bitmap = clib_bitmap_set (0, 0, 1);
 
   /* pin main thread to main_lcore  */
-  if (tm->cb.vlib_thread_set_lcore_cb)
-    {
-      tm->cb.vlib_thread_set_lcore_cb (0, tm->main_lcore);
-    }
-  else
-    {
-      cpu_set_t cpuset;
-      CPU_ZERO (&cpuset);
-      CPU_SET (tm->main_lcore, &cpuset);
-      pthread_setaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset);
-    }
+  CPU_ZERO (&cpuset);
+  CPU_SET (tm->main_lcore, &cpuset);
+  pthread_setaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset);
 
   /* Set up thread 0 */
   vec_validate_aligned (vlib_worker_threads, 0, CLIB_CACHE_LINE_BYTES);
@@ -463,6 +456,8 @@ vlib_launch_thread_int (void *fp, vlib_worker_thread_t * w, unsigned cpu_id)
 {
   clib_mem_main_t *mm = &clib_mem_main;
   vlib_thread_main_t *tm = &vlib_thread_main;
+  pthread_t worker;
+  cpu_set_t cpuset;
   void *(*fp_arg) (void *) = fp;
   void *numa_heap;
 
@@ -489,12 +484,6 @@ vlib_launch_thread_int (void *fp, vlib_worker_thread_t * w, unsigned cpu_id)
 	}
     }
 
-  if (tm->cb.vlib_launch_thread_cb && !w->registration->use_pthreads)
-    return tm->cb.vlib_launch_thread_cb (fp, (void *) w, cpu_id);
-  else
-    {
-      pthread_t worker;
-      cpu_set_t cpuset;
       CPU_ZERO (&cpuset);
       CPU_SET (cpu_id, &cpuset);
 
@@ -505,7 +494,6 @@ vlib_launch_thread_int (void *fp, vlib_worker_thread_t * w, unsigned cpu_id)
 	return clib_error_return_unix (0, "pthread_setaffinity_np");
 
       return 0;
-    }
 }
 
 static clib_error_t *
@@ -1520,7 +1508,6 @@ vlib_worker_thread_fn (void *arg)
 {
   vlib_global_main_t *vgm = vlib_get_global_main ();
   vlib_worker_thread_t *w = (vlib_worker_thread_t *) arg;
-  vlib_thread_main_t *tm = vlib_get_thread_main ();
   vlib_main_t *vm = vlib_get_main ();
   clib_error_t *e;
 
@@ -1540,10 +1527,6 @@ vlib_worker_thread_fn (void *arg)
   if (e)
     clib_error_report (e);
 
-  /* Wait until the dpdk init sequence is complete */
-  while (tm->extern_thread_mgmt && tm->worker_thread_release == 0)
-    vlib_worker_thread_barrier_check ();
-
   vlib_worker_loop (vm);
 }
 
@@ -1586,19 +1569,6 @@ vlib_frame_queue_main_init (u32 node_index, u32 frame_queue_nelts)
   return (fqm - tm->frame_queue_mains);
 }
 
-int
-vlib_thread_cb_register (struct vlib_main_t *vm, vlib_thread_callbacks_t * cb)
-{
-  vlib_thread_main_t *tm = vlib_get_thread_main ();
-
-  if (tm->extern_thread_mgmt)
-    return -1;
-
-  tm->cb.vlib_launch_thread_cb = cb->vlib_launch_thread_cb;
-  tm->extern_thread_mgmt = 1;
-  return 0;
-}
-
 void
 vlib_process_signal_event_mt_helper (vlib_process_signal_event_mt_args_t *
 				     args)
diff --git a/src/vlib/threads.h b/src/vlib/threads.h
index 91727bacc23..e406dde5b07 100644
--- a/src/vlib/threads.h
+++ b/src/vlib/threads.h
@@ -235,13 +235,6 @@ typedef enum
 
 typedef struct
 {
-  clib_error_t *(*vlib_launch_thread_cb) (void *fp, vlib_worker_thread_t * w,
-					  unsigned cpu_id);
-  clib_error_t *(*vlib_thread_set_lcore_cb) (u32 thread, u16 cpu);
-} vlib_thread_callbacks_t;
-
-typedef struct
-{
   /* Link list of registrations, built by constructors */
   vlib_thread_registration_t *next;
 
@@ -252,10 +245,6 @@ typedef struct
 
   vlib_worker_thread_t *worker_threads;
 
-  /*
-   * Launch all threads as pthreads,
-   * not eal_rte_launch (strict affinity) threads
-   */
   int use_pthreads;
 
   /* Number of vlib_main / vnet_main clones */
@@ -297,10 +286,6 @@ typedef struct
   /* scheduling policy priority */
   u32 sched_priority;
 
-  /* callbacks */
-  vlib_thread_callbacks_t cb;
-  int extern_thread_mgmt;
-
   /* NUMA-bound heap size */
   uword numa_heap_size;
 
@@ -490,8 +475,6 @@ vlib_thread_is_main_w_barrier (void)
 }
 
 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