diff options
Diffstat (limited to 'sys/kern/kern_sched.c')
| -rw-r--r-- | sys/kern/kern_sched.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/sys/kern/kern_sched.c b/sys/kern/kern_sched.c index 16daae2..4bbe5a0 100644 --- a/sys/kern/kern_sched.c +++ b/sys/kern/kern_sched.c @@ -33,8 +33,10 @@ #include <sys/cdefs.h> #include <sys/param.h> #include <sys/syslog.h> +#include <sys/atomic.h> #include <machine/frame.h> #include <machine/cpu.h> +#include <machine/cdefs.h> #include <vm/pmap.h> #include <dev/timer.h> #include <assert.h> @@ -44,7 +46,7 @@ void sched_switch(struct trapframe *tf); -static sched_policy_t policy = SCHED_POLICY_RR; +static sched_policy_t policy = SCHED_POLICY_MLFQ; /* * Thread ready queues - all threads ready to be @@ -105,12 +107,14 @@ sched_dequeue_td(void) if (!TAILQ_EMPTY(&queue->q)) { td = TAILQ_FIRST(&queue->q); TAILQ_REMOVE(&queue->q, td, link); - break; + spinlock_release(&tdq_lock); + return td; } } + /* We got nothing */ spinlock_release(&tdq_lock); - return td; + return NULL; } /* @@ -237,8 +241,12 @@ sched_switch(struct trapframe *tf) void sched_enter(void) { - sched_oneshot(false); - for (;;); + md_inton(); + md_sync_all(); + for (;;) { + sched_oneshot(false); + md_pause(); + } } void |