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remote TLB invalidation: follow migrated threads by affinity calls

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Balazs Gerofi bgerofi@riken.jp
2014-07-27 13:11:41 +09:00
parent 17730617e1
commit 07b07476b7
1 changed files with 9 additions and 0 deletions
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9
kernel/process.c
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@ -1781,6 +1781,7 @@ static void do_migrate(void)
ihk_mc_spinlock_lock_noirq(&cur_v->migq_lock);
list_for_each_entry_safe(req, tmp, &cur_v->migq, list) {
int cpu_id;
int old_cpu_id;
struct cpu_local_var *v;
/* 0. check if migration is necessary */
@ -1802,9 +1803,17 @@ static void do_migrate(void)
double_rq_lock(cur_v, v);
list_del(&req->proc->sched_list);
cur_v->runq_len -= 1;
old_cpu_id = req->proc->cpu_id;
req->proc->cpu_id = cpu_id;
list_add_tail(&req->proc->sched_list, &v->runq);
v->runq_len += 1;
/* update cpu_set of the VM for remote TLB invalidation */
cpu_clear(old_cpu_id, &req->proc->vm->cpu_set,
&req->proc->vm->cpu_set_lock);
cpu_set(cpu_id, &req->proc->vm->cpu_set,
&req->proc->vm->cpu_set_lock);
if (v->runq_len == 1)
ihk_mc_interrupt_cpu(get_x86_cpu_local_variable(cpu_id)->apic_id, 0xd1);
double_rq_unlock(cur_v, v);