From 5d52c9f23a260fb297e5a1a40574dd4f590de276 Mon Sep 17 00:00:00 2001 From: Ian Moffett Date: Sat, 31 May 2025 01:54:40 -0400 Subject: kernel: sched: Implement better sched_yield() Signed-off-by: Ian Moffett --- sys/kern/kern_sched.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) (limited to 'sys/kern') diff --git a/sys/kern/kern_sched.c b/sys/kern/kern_sched.c index b66bdf8..8e456d2 100644 --- a/sys/kern/kern_sched.c +++ b/sys/kern/kern_sched.c @@ -253,12 +253,20 @@ sched_enter(void) void sched_yield(void) { - struct proc *td = this_td(); + struct proc *td; + struct cpu_info *ci = this_cpu(); - if (td != NULL) { - td->rested = true; - sched_switch(&td->tf); + if ((td = ci->curtd) == NULL) { + return; } + + td->rested = true; + ci->curtd = NULL; + + md_inton(); + sched_oneshot(false); + md_hlt(); + ci->curtd = td; } void -- cgit v1.2.3