Hey Ben,
Just found, this patch needs a review,
Could you take a look~?
Thanks,
Alex Wang,
On Mon, Dec 29, 2014 at 4:06 PM, Alex Wang <al...@nicira.com> wrote:
> This commit makes handler threads always call poll_block() at
> the end of each handling cycle. If there are upcalls received
> in the current cycle, the handler will register to wake up
> immediately. Otherwise, it will wait on both the netlink
> socket and the exit latch.
>
> Calling poll_block() at every handling cycle makes sure that
> coverage counter stats are always timely attributed, and that
> the execution of ovsrcu-postponed events is not held by any
> busy handler thread.
>
> Signed-off-by: Alex Wang <al...@nicira.com>
> ---
> ofproto/ofproto-dpif-upcall.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/ofproto/ofproto-dpif-upcall.c b/ofproto/ofproto-dpif-upcall.c
> index 8577b0e..193e6b7 100644
> --- a/ofproto/ofproto-dpif-upcall.c
> +++ b/ofproto/ofproto-dpif-upcall.c
> @@ -526,8 +526,9 @@ udpif_upcall_handler(void *arg)
> if (!n_upcalls) {
> dpif_recv_wait(udpif->dpif, handler->handler_id);
> latch_wait(&udpif->exit_latch);
> - poll_block();
> } else {
> + poll_immediate_wake();
> +
> handle_upcalls(handler, &misses, upcalls, n_upcalls);
>
> HMAP_FOR_EACH (miss, hmap_node, &misses) {
> @@ -539,7 +540,7 @@ udpif_upcall_handler(void *arg)
> ofpbuf_uninit(&upcalls[i].upcall_buf);
> }
> }
> - coverage_clear();
> + poll_block();
> }
> hmap_destroy(&misses);
>
> --
> 1.7.9.5
>
>
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