C++ (Cpp) res_counter_init Examples

Example #1

File: tcp_memcontrol.c Project: mikuhatsune001/linux2.6.32

int tcp_init_cgroup(struct mem_cgroup *memcg, struct cgroup_subsys *ss)
{
	/*
	 * The root cgroup does not use res_counters, but rather,
	 * rely on the data already collected by the network
	 * subsystem
	 */
	struct res_counter *res_parent = NULL;
	struct cg_proto *cg_proto, *parent_cg;
	struct mem_cgroup *parent = parent_mem_cgroup(memcg);

	cg_proto = tcp_prot.proto_cgroup(memcg);
	if (!cg_proto)
		return 0;

	cg_proto->sysctl_mem[0] = sysctl_tcp_mem[0];
	cg_proto->sysctl_mem[1] = sysctl_tcp_mem[1];
	cg_proto->sysctl_mem[2] = sysctl_tcp_mem[2];
	cg_proto->memory_pressure = 0;
	cg_proto->memcg = memcg;

	parent_cg = tcp_prot.proto_cgroup(parent);
	if (parent_cg)
		res_parent = &parent_cg->memory_allocated;

	res_counter_init(&cg_proto->memory_allocated, res_parent);
	percpu_counter_init(&cg_proto->sockets_allocated, 0);

	return 0;
}

Example #2

File: tcp_memcontrol.c Project: 0xroot/Blackphone-BP1-Kernel

int tcp_init_cgroup(struct cgroup *cgrp, struct cgroup_subsys *ss)
{
	/*
	 * The root cgroup does not use res_counters, but rather,
	 * rely on the data already collected by the network
	 * subsystem
	 */
	struct res_counter *res_parent = NULL;
	struct cg_proto *cg_proto, *parent_cg;
	struct tcp_memcontrol *tcp;
	struct mem_cgroup *memcg = mem_cgroup_from_cont(cgrp);
	struct mem_cgroup *parent = parent_mem_cgroup(memcg);
	struct net *net = current->nsproxy->net_ns;

	cg_proto = tcp_prot.proto_cgroup(memcg);
	if (!cg_proto)
		goto create_files;

	tcp = tcp_from_cgproto(cg_proto);

	tcp->tcp_prot_mem[0] = net->ipv4.sysctl_tcp_mem[0];
	tcp->tcp_prot_mem[1] = net->ipv4.sysctl_tcp_mem[1];
	tcp->tcp_prot_mem[2] = net->ipv4.sysctl_tcp_mem[2];
	tcp->tcp_memory_pressure = 0;

	parent_cg = tcp_prot.proto_cgroup(parent);
	if (parent_cg)
		res_parent = parent_cg->memory_allocated;

	res_counter_init(&tcp->tcp_memory_allocated, res_parent);
	percpu_counter_init(&tcp->tcp_sockets_allocated, 0);

	cg_proto->enter_memory_pressure = memcg_tcp_enter_memory_pressure;
	cg_proto->memory_pressure = &tcp->tcp_memory_pressure;
	cg_proto->sysctl_mem = tcp->tcp_prot_mem;
	cg_proto->memory_allocated = &tcp->tcp_memory_allocated;
	cg_proto->sockets_allocated = &tcp->tcp_sockets_allocated;
	cg_proto->memcg = memcg;

create_files:
	return cgroup_add_files(cgrp, ss, tcp_files,
				ARRAY_SIZE(tcp_files));
}