From 4266d4d5ff96043f6d2fbd217e97eddf8916e346 Mon Sep 17 00:00:00 2001 From: hanlin Date: Tue, 19 May 2020 17:34:17 +0800 Subject: vcl: nest vcl_mq_epfd to support epoll_wait without high CPU usage Now, libc epfd and vls epfd are independent and can only epoll_wait independently without timeout, then app calling epoll_wait will occupy high CPU. So we nest vcl_mq_epfd into libc epfd when using eventfd with VPP, and then we can only epoll_wait libc epfd with specified timeout. Type: feature Signed-off-by: hanlin Change-Id: I6b6e0f501c769e186714bfbc187cfaed2533b4c2 Signed-off-by: hanlin --- src/vcl/vcl_locked.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'src/vcl/vcl_locked.c') diff --git a/src/vcl/vcl_locked.c b/src/vcl/vcl_locked.c index ae9c9762dc1..19522c05d61 100644 --- a/src/vcl/vcl_locked.c +++ b/src/vcl/vcl_locked.c @@ -1381,6 +1381,12 @@ vls_app_create (char *app_name) return VPPCOM_OK; } +unsigned char +vls_use_eventfd (void) +{ + return vcm->cfg.use_mq_eventfd; +} + /* * fd.io coding-style-patch-verification: ON * -- cgit 1.2.3-korg