/* * linux/include/asm-generic/topology.h * * Written by: Matthew Dobson, IBM Corporation * * Copyright (C) 2002, IBM Corp. * * All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or * NON INFRINGEMENT. See the GNU General Public License for more * details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * Send feedback to */ #ifndef _ASM_GENERIC_TOPOLOGY_H #define _ASM_GENERIC_TOPOLOGY_H #ifndef CONFIG_NUMA /* Other architectures wishing to use this simple topology API should fill in the below functions as appropriate in their own file. */ #ifndef cpu_to_node #define cpu_to_node(cpu) ((void)(cpu),0) #endif #ifndef set_numa_node #define set_numa_node(node) #endif #ifndef set_cpu_numa_node #define set_cpu_numa_node(cpu, node) #endif #ifndef cpu_to_mem #define cpu_to_mem(cpu) ((void)(cpu),0) #endif #ifndef parent_node #define parent_node(node) ((void)(node),0) #endif #ifndef cpumask_of_node #define cpumask_of_node(node) ((void)node, cpu_online_mask) #endif #ifndef pcibus_to_node #define pcibus_to_node(bus) ((void)(bus), -1) #endif #ifndef cpumask_of_pcibus #define cpumask_of_pcibus(bus) (pcibus_to_node(bus) == -1 ? \ cpu_all_mask : \ cpumask_of_node(pcibus_to_node(bus))) #endif #endif /* CONFIG_NUMA */ #if !defined(CONFIG_NUMA) || !defined(CONFIG_HAVE_MEMORYLESS_NODES) #ifndef set_numa_mem #define set_numa_mem(node) #endif #ifndef set_cpu_numa_mem #define set_cpu_numa_mem(cpu, node) #endif #endif /* !CONFIG_NUMA || !CONFIG_HAVE_MEMORYLESS_NODES */ #endif /* _ASM_GENERIC_TOPOLOGY_H */ ck/rk3036-cru.h?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>diff
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authorTejun Heo <tj@kernel.org>2017-01-26 16:47:28 -0500
committerTejun Heo <tj@kernel.org>2017-01-26 16:47:28 -0500
commit07cd12945551b63ecb1a349d50a6d69d1d6feb4a (patch)
tree75f65eba7eac9277971082a2d5a4cf1370562c0c /include/dt-bindings/clock/rk3036-cru.h
parent7ce7d89f48834cefece7804d38fc5d85382edf77 (diff)
cgroup: don't online subsystems before cgroup_name/path() are operational
While refactoring cgroup creation, a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()") incorrectly onlined subsystems before the new cgroup is associated with it kernfs_node. This is fine for cgroup proper but cgroup_name/path() depend on the associated kernfs_node and if a subsystem makes the new cgroup_subsys_state visible, which they're allowed to after onlining, it can lead to NULL dereference. The current code performs cgroup creation and subsystem onlining in cgroup_create() and cgroup_mkdir() makes the cgroup and subsystems visible afterwards. There's no reason to online the subsystems early and we can simply drop cgroup_apply_control_enable() call from cgroup_create() so that the subsystems are onlined and made visible at the same time. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Fixes: a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()") Cc: stable@vger.kernel.org # v4.6+
Diffstat (limited to 'include/dt-bindings/clock/rk3036-cru.h')