sched/fair: Kill task_struct::numa_entry and numa_group::task_list (75389918) · Commits · 戴 / test

kernel/sched/core.c

+0 −1

Original line number	Diff line number	Diff line
		@@ -1861,7 +1861,6 @@ static void __sched_fork(unsigned long clone_flags, struct task_struct *p)
		p->last_task_numa_placement = 0;
		p->last_sum_exec_runtime = 0;

		INIT_LIST_HEAD(&p->numa_entry);
		p->numa_group = NULL;
		#endif /* CONFIG_NUMA_BALANCING */
		}

+0 −5

Original line number	Diff line number	Diff line
		@@ -873,7 +873,6 @@ struct numa_group {
		spinlock_t lock; /* nr_tasks, tasks */
		int nr_tasks;
		pid_t gid;
		struct list_head task_list;

		struct rcu_head rcu;
		nodemask_t active_nodes;
		@@ -1906,7 +1905,6 @@ static void task_numa_group(struct task_struct *p, int cpupid, int flags,

		atomic_set(&grp->refcount, 1);
		spin_lock_init(&grp->lock);
		INIT_LIST_HEAD(&grp->task_list);
		grp->gid = p->pid;
		/* Second half of the array tracks nids where faults happen */
		grp->faults_cpu = grp->faults + NR_NUMA_HINT_FAULT_TYPES *
		@@ -1919,7 +1917,6 @@ static void task_numa_group(struct task_struct *p, int cpupid, int flags,

		grp->total_faults = p->total_numa_faults;

		list_add(&p->numa_entry, &grp->task_list);
		grp->nr_tasks++;
		rcu_assign_pointer(p->numa_group, grp);
		}
		@@ -1980,7 +1977,6 @@ static void task_numa_group(struct task_struct *p, int cpupid, int flags,
		my_grp->total_faults -= p->total_numa_faults;
		grp->total_faults += p->total_numa_faults;

		list_move(&p->numa_entry, &grp->task_list);
		my_grp->nr_tasks--;
		grp->nr_tasks++;

		@@ -2010,7 +2006,6 @@ void task_numa_free(struct task_struct *p)
		grp->faults[i] -= p->numa_faults[i];
		grp->total_faults -= p->total_numa_faults;

		list_del(&p->numa_entry);
		grp->nr_tasks--;
		spin_unlock_irqrestore(&grp->lock, flags);
		RCU_INIT_POINTER(p->numa_group, NULL);