diff options
| author |   Benoît Ganne <bganne@cisco.com> | 2020-06-30 18:17:06 +0200 |
|---|---|---|
| committer |   Dave Barach <openvpp@barachs.net> | 2020-07-01 20:39:01 +0000 |
| commit | d25147d58117a573fd2fc04cdfa76339fa1cdf22 (patch) | |
| tree | 0e44628d9499f7d45a8aa0944cc4847e137f90d6 /src/vlib | |
| parent | 126c88544103d3775252f741398111875f6a62d7 (diff) | |
vlib: wake up workers if interrupts are posted
Type: fix
Change-Id: If8dbbcb46193fd057fe8d704058609a3a8787d6c
Signed-off-by: Benoît Ganne <bganne@cisco.com>
Diffstat (limited to 'src/vlib')
| -rw-r--r-- | src/vlib/main.c | 5 | ||||
| -rw-r--r-- | src/vlib/node.h | 1 | ||||
| -rw-r--r-- | src/vlib/node_funcs.h | 1 | ||||
| -rw-r--r-- | src/vlib/unix/input.c | 3 |
4 files changed, 8 insertions, 2 deletions
diff --git a/src/vlib/main.c b/src/vlib/main.c index 2c397a29672..8d7c6c09275 100644 --- a/src/vlib/main.c +++ b/src/vlib/main.c @@ -1766,6 +1766,8 @@ vlib_main_or_worker_loop (vlib_main_t * vm, int is_main) /* Pre-allocate interupt runtime indices and lock. */ vec_alloc (nm->pending_local_interrupts, 32); vec_alloc (nm->pending_remote_interrupts, 32); + vec_alloc_aligned (nm->pending_remote_interrupts_notify, 1, + CLIB_CACHE_LINE_BYTES); clib_spinlock_init (&nm->pending_interrupt_lock); /* Pre-allocate expired nodes. */ @@ -1857,7 +1859,7 @@ vlib_main_or_worker_loop (vlib_main_t * vm, int is_main) cpu_time_now = dispatch_pending_interrupts (vm, nm, cpu_time_now); /* handle remote interruots */ - if (_vec_len (nm->pending_remote_interrupts)) + if (PREDICT_FALSE (_vec_len (nm->pending_remote_interrupts))) { vlib_node_interrupt_t *in; @@ -1868,6 +1870,7 @@ vlib_main_or_worker_loop (vlib_main_t * vm, int is_main) in = nm->pending_local_interrupts; nm->pending_local_interrupts = nm->pending_remote_interrupts; nm->pending_remote_interrupts = in; + *nm->pending_remote_interrupts_notify = 0; clib_spinlock_unlock (&nm->pending_interrupt_lock); cpu_time_now = dispatch_pending_interrupts (vm, nm, cpu_time_now); diff --git a/src/vlib/node.h b/src/vlib/node.h index ca7564a13e7..9c4cadd56f7 100644 --- a/src/vlib/node.h +++ b/src/vlib/node.h @@ -698,6 +698,7 @@ typedef struct /* Node runtime indices for input nodes with pending interrupts. */ vlib_node_interrupt_t *pending_local_interrupts; vlib_node_interrupt_t *pending_remote_interrupts; + volatile u32 *pending_remote_interrupts_notify; clib_spinlock_t pending_interrupt_lock; /* Input nodes are switched from/to interrupt to/from polling mode diff --git a/src/vlib/node_funcs.h b/src/vlib/node_funcs.h index b607ef252bd..89f212374e9 100644 --- a/src/vlib/node_funcs.h +++ b/src/vlib/node_funcs.h @@ -242,6 +242,7 @@ vlib_node_set_interrupt_pending_with_data (vlib_main_t * vm, u32 node_index, vec_add2 (nm->pending_remote_interrupts, i, 1); i->node_runtime_index = n->runtime_index; i->data = data; + *nm->pending_remote_interrupts_notify = 1; clib_spinlock_unlock (&nm->pending_interrupt_lock); } } diff --git a/src/vlib/unix/input.c b/src/vlib/unix/input.c index 98cb133409f..7531dd19749 100644 --- a/src/vlib/unix/input.c +++ b/src/vlib/unix/input.c @@ -249,7 +249,8 @@ linux_epoll_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node, while (nanosleep (&ts, &tsrem) < 0) ts = tsrem; - if (*vlib_worker_threads->wait_at_barrier) + if (*vlib_worker_threads->wait_at_barrier + || *nm->pending_remote_interrupts_notify) goto done; } } |