diff options
| -rw-r--r-- | sys/kern/kern_sched.c | 33 |
1 files changed, 29 insertions, 4 deletions
diff --git a/sys/kern/kern_sched.c b/sys/kern/kern_sched.c index 214032a..1d9ba11 100644 --- a/sys/kern/kern_sched.c +++ b/sys/kern/kern_sched.c @@ -104,7 +104,7 @@ sched_enqueue_td(struct proc *td) spinlock_acquire(&tdq_lock); - td->pid = ++nthread; + td->pid = nthread++; TAILQ_INSERT_TAIL(&td_queue, td, link); spinlock_release(&tdq_lock); @@ -130,6 +130,13 @@ sched_dequeue_td(void) return td; } +__noreturn static void +sched_idle(void) +{ + for (;;) { + hint_spinwait(); + } +} /* * Processor awaiting tasks to be assigned will be here spinning. @@ -138,9 +145,8 @@ __noreturn static void sched_enter(void) { sched_oneshot(); - for (;;) { - hint_spinwait(); - } + sched_idle(); + __builtin_unreachable(); } static uintptr_t @@ -322,6 +328,24 @@ sched_destroy_td(struct proc *td) dynfree(td); } +/* + * Create the idle thread. + */ +static void +sched_make_idletd(void) +{ + char *argv[] = {NULL}; + char *envp[] = {NULL}; + struct auxval auxv = {0}; + struct vm_range range; + struct proc *td; + + td = sched_create_td((uintptr_t)sched_idle, argv, envp, + auxv, pmap_read_vas(), false, &range); + + sched_enqueue_td(td); +} + void sched_exit(void) { @@ -419,6 +443,7 @@ sched_init(void) char *envp[] = {NULL}; TAILQ_INIT(&td_queue); + sched_make_idletd(); if ((init_bin = initramfs_open("/usr/sbin/init")) == NULL) { panic("Could not open /usr/boot/init\n"); |