diff options
| author |   Colin Tregenza Dancer <ctd@metaswitch.com> | 2017-09-04 15:27:49 +0100 |
|---|---|---|
| committer |   Dave Barach <openvpp@barachs.net> | 2017-09-05 13:33:51 +0000 |
| commit | 215961829c4ae5f738ffcd01a8d1afcab13bd0e2 (patch) | |
| tree | 1cd897089bd30491ea362b4e827bd9401f34afae /src/vlib/threads.h | |
| parent | f7a55ad74c90928d86f1bbf56590d9571c1b828f (diff) | |
Refork worker thread data structures in parallel (VPP-970)
Change the rebuilding of worker thread clone datastructures
to run in parallel on the workers, instead of serially
on main.
Change-Id: Ib76bcfbef1e51f2399972090f4057be7aaa84e08
Signed-off-by: Colin Tregenza Dancer <ctd@metaswitch.com>
Diffstat (limited to 'src/vlib/threads.h')
| -rw-r--r-- | src/vlib/threads.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/vlib/threads.h b/src/vlib/threads.h index 572ce77ffcc..c3f1cadee16 100644 --- a/src/vlib/threads.h +++ b/src/vlib/threads.h @@ -102,6 +102,7 @@ typedef struct vlib_thread_registration_t *registration; u8 *name; u64 barrier_sync_count; + volatile u32 *node_reforks_required; long lwp; int lcore_id; @@ -180,6 +181,7 @@ u32 vlib_frame_queue_main_init (u32 node_index, u32 frame_queue_nelts); void vlib_worker_thread_barrier_sync (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) @@ -369,6 +371,15 @@ vlib_worker_thread_barrier_check (void) 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)) + { + vlib_worker_thread_node_refork (); + clib_smp_atomic_add (vlib_worker_threads->node_reforks_required, + -1); + while (*vlib_worker_threads->node_reforks_required) + ; + } } } |