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cgroup/cpuset: move common code to cpuset-internal.h
Move some declarations that will be used for cpuset v1 and v2, including 'cpuset struct', 'cpuset_flagbits_t', cpuset_filetype_t,etc. No logical change. Signed-off-by: Chen Ridong <chenridong@huawei.com> Acked-by: Waiman Long <longman@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Chen Ridong
Tejun Heo
parent
71e934a808
commit
619a33efa0
@ -3,4 +3,239 @@
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#ifndef __CPUSET_INTERNAL_H
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#define __CPUSET_INTERNAL_H
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#include <linux/union_find.h>
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#include <linux/cpumask.h>
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#include <linux/spinlock.h>
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#include <linux/cpuset.h>
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#include <linux/cgroup.h>
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/* See "Frequency meter" comments, below. */
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struct fmeter {
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int cnt; /* unprocessed events count */
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int val; /* most recent output value */
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time64_t time; /* clock (secs) when val computed */
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spinlock_t lock; /* guards read or write of above */
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};
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/*
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* Invalid partition error code
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*/
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enum prs_errcode {
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PERR_NONE = 0,
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PERR_INVCPUS,
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PERR_INVPARENT,
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PERR_NOTPART,
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PERR_NOTEXCL,
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PERR_NOCPUS,
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PERR_HOTPLUG,
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PERR_CPUSEMPTY,
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PERR_HKEEPING,
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PERR_ACCESS,
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};
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/* bits in struct cpuset flags field */
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typedef enum {
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CS_ONLINE,
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CS_CPU_EXCLUSIVE,
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CS_MEM_EXCLUSIVE,
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CS_MEM_HARDWALL,
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CS_MEMORY_MIGRATE,
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CS_SCHED_LOAD_BALANCE,
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CS_SPREAD_PAGE,
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CS_SPREAD_SLAB,
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} cpuset_flagbits_t;
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/* The various types of files and directories in a cpuset file system */
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typedef enum {
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FILE_MEMORY_MIGRATE,
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FILE_CPULIST,
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FILE_MEMLIST,
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FILE_EFFECTIVE_CPULIST,
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FILE_EFFECTIVE_MEMLIST,
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FILE_SUBPARTS_CPULIST,
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FILE_EXCLUSIVE_CPULIST,
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FILE_EFFECTIVE_XCPULIST,
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FILE_ISOLATED_CPULIST,
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FILE_CPU_EXCLUSIVE,
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FILE_MEM_EXCLUSIVE,
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FILE_MEM_HARDWALL,
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FILE_SCHED_LOAD_BALANCE,
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FILE_PARTITION_ROOT,
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FILE_SCHED_RELAX_DOMAIN_LEVEL,
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FILE_MEMORY_PRESSURE_ENABLED,
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FILE_MEMORY_PRESSURE,
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FILE_SPREAD_PAGE,
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FILE_SPREAD_SLAB,
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} cpuset_filetype_t;
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struct cpuset {
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struct cgroup_subsys_state css;
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unsigned long flags; /* "unsigned long" so bitops work */
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/*
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* On default hierarchy:
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*
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* The user-configured masks can only be changed by writing to
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* cpuset.cpus and cpuset.mems, and won't be limited by the
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* parent masks.
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*
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* The effective masks is the real masks that apply to the tasks
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* in the cpuset. They may be changed if the configured masks are
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* changed or hotplug happens.
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*
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* effective_mask == configured_mask & parent's effective_mask,
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* and if it ends up empty, it will inherit the parent's mask.
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*
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*
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* On legacy hierarchy:
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*
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* The user-configured masks are always the same with effective masks.
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*/
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/* user-configured CPUs and Memory Nodes allow to tasks */
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cpumask_var_t cpus_allowed;
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nodemask_t mems_allowed;
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/* effective CPUs and Memory Nodes allow to tasks */
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cpumask_var_t effective_cpus;
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nodemask_t effective_mems;
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/*
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* Exclusive CPUs dedicated to current cgroup (default hierarchy only)
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*
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* The effective_cpus of a valid partition root comes solely from its
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* effective_xcpus and some of the effective_xcpus may be distributed
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* to sub-partitions below & hence excluded from its effective_cpus.
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* For a valid partition root, its effective_cpus have no relationship
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* with cpus_allowed unless its exclusive_cpus isn't set.
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*
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* This value will only be set if either exclusive_cpus is set or
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* when this cpuset becomes a local partition root.
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*/
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cpumask_var_t effective_xcpus;
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/*
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* Exclusive CPUs as requested by the user (default hierarchy only)
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*
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* Its value is independent of cpus_allowed and designates the set of
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* CPUs that can be granted to the current cpuset or its children when
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* it becomes a valid partition root. The effective set of exclusive
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* CPUs granted (effective_xcpus) depends on whether those exclusive
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* CPUs are passed down by its ancestors and not yet taken up by
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* another sibling partition root along the way.
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*
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* If its value isn't set, it defaults to cpus_allowed.
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*/
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cpumask_var_t exclusive_cpus;
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/*
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* This is old Memory Nodes tasks took on.
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*
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* - top_cpuset.old_mems_allowed is initialized to mems_allowed.
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* - A new cpuset's old_mems_allowed is initialized when some
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* task is moved into it.
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* - old_mems_allowed is used in cpuset_migrate_mm() when we change
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* cpuset.mems_allowed and have tasks' nodemask updated, and
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* then old_mems_allowed is updated to mems_allowed.
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*/
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nodemask_t old_mems_allowed;
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struct fmeter fmeter; /* memory_pressure filter */
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/*
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* Tasks are being attached to this cpuset. Used to prevent
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* zeroing cpus/mems_allowed between ->can_attach() and ->attach().
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*/
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int attach_in_progress;
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/* for custom sched domain */
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int relax_domain_level;
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/* number of valid local child partitions */
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int nr_subparts;
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/* partition root state */
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int partition_root_state;
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/*
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* number of SCHED_DEADLINE tasks attached to this cpuset, so that we
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* know when to rebuild associated root domain bandwidth information.
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*/
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int nr_deadline_tasks;
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int nr_migrate_dl_tasks;
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u64 sum_migrate_dl_bw;
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/* Invalid partition error code, not lock protected */
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enum prs_errcode prs_err;
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/* Handle for cpuset.cpus.partition */
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struct cgroup_file partition_file;
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/* Remote partition silbling list anchored at remote_children */
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struct list_head remote_sibling;
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/* Used to merge intersecting subsets for generate_sched_domains */
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struct uf_node node;
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};
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static inline struct cpuset *css_cs(struct cgroup_subsys_state *css)
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{
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return css ? container_of(css, struct cpuset, css) : NULL;
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}
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/* Retrieve the cpuset for a task */
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static inline struct cpuset *task_cs(struct task_struct *task)
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{
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return css_cs(task_css(task, cpuset_cgrp_id));
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}
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static inline struct cpuset *parent_cs(struct cpuset *cs)
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{
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return css_cs(cs->css.parent);
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}
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/* convenient tests for these bits */
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static inline bool is_cpuset_online(struct cpuset *cs)
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{
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return test_bit(CS_ONLINE, &cs->flags) && !css_is_dying(&cs->css);
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}
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static inline int is_cpu_exclusive(const struct cpuset *cs)
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{
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return test_bit(CS_CPU_EXCLUSIVE, &cs->flags);
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}
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static inline int is_mem_exclusive(const struct cpuset *cs)
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{
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return test_bit(CS_MEM_EXCLUSIVE, &cs->flags);
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}
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static inline int is_mem_hardwall(const struct cpuset *cs)
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{
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return test_bit(CS_MEM_HARDWALL, &cs->flags);
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}
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static inline int is_sched_load_balance(const struct cpuset *cs)
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{
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return test_bit(CS_SCHED_LOAD_BALANCE, &cs->flags);
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}
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static inline int is_memory_migrate(const struct cpuset *cs)
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{
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return test_bit(CS_MEMORY_MIGRATE, &cs->flags);
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}
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static inline int is_spread_page(const struct cpuset *cs)
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{
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return test_bit(CS_SPREAD_PAGE, &cs->flags);
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}
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static inline int is_spread_slab(const struct cpuset *cs)
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{
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return test_bit(CS_SPREAD_SLAB, &cs->flags);
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}
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#endif /* __CPUSET_INTERNAL_H */
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@ -22,11 +22,9 @@
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* distribution for more details.
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*/
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#include "cgroup-internal.h"
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#include "cpuset-internal.h"
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#include <linux/cpu.h>
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#include <linux/cpumask.h>
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#include <linux/cpuset.h>
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#include <linux/delay.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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@ -40,13 +38,10 @@
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#include <linux/sched/mm.h>
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#include <linux/sched/task.h>
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#include <linux/security.h>
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#include <linux/spinlock.h>
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#include <linux/oom.h>
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#include <linux/sched/isolation.h>
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#include <linux/cgroup.h>
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#include <linux/wait.h>
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#include <linux/workqueue.h>
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#include <linux/union_find.h>
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DEFINE_STATIC_KEY_FALSE(cpusets_pre_enable_key);
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DEFINE_STATIC_KEY_FALSE(cpusets_enabled_key);
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@ -58,31 +53,6 @@ DEFINE_STATIC_KEY_FALSE(cpusets_enabled_key);
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*/
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DEFINE_STATIC_KEY_FALSE(cpusets_insane_config_key);
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/* See "Frequency meter" comments, below. */
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struct fmeter {
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int cnt; /* unprocessed events count */
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int val; /* most recent output value */
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time64_t time; /* clock (secs) when val computed */
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spinlock_t lock; /* guards read or write of above */
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};
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/*
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* Invalid partition error code
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*/
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enum prs_errcode {
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PERR_NONE = 0,
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PERR_INVCPUS,
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PERR_INVPARENT,
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PERR_NOTPART,
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PERR_NOTEXCL,
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PERR_NOCPUS,
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PERR_HOTPLUG,
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PERR_CPUSEMPTY,
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PERR_HKEEPING,
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PERR_ACCESS,
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};
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static const char * const perr_strings[] = {
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[PERR_INVCPUS] = "Invalid cpu list in cpuset.cpus.exclusive",
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[PERR_INVPARENT] = "Parent is an invalid partition root",
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@ -95,117 +65,6 @@ static const char * const perr_strings[] = {
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[PERR_ACCESS] = "Enable partition not permitted",
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};
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struct cpuset {
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struct cgroup_subsys_state css;
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unsigned long flags; /* "unsigned long" so bitops work */
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/*
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* On default hierarchy:
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*
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* The user-configured masks can only be changed by writing to
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* cpuset.cpus and cpuset.mems, and won't be limited by the
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* parent masks.
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*
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* The effective masks is the real masks that apply to the tasks
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* in the cpuset. They may be changed if the configured masks are
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* changed or hotplug happens.
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*
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* effective_mask == configured_mask & parent's effective_mask,
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* and if it ends up empty, it will inherit the parent's mask.
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*
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*
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* On legacy hierarchy:
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*
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* The user-configured masks are always the same with effective masks.
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*/
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/* user-configured CPUs and Memory Nodes allow to tasks */
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cpumask_var_t cpus_allowed;
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nodemask_t mems_allowed;
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/* effective CPUs and Memory Nodes allow to tasks */
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cpumask_var_t effective_cpus;
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nodemask_t effective_mems;
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/*
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* Exclusive CPUs dedicated to current cgroup (default hierarchy only)
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*
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* The effective_cpus of a valid partition root comes solely from its
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* effective_xcpus and some of the effective_xcpus may be distributed
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* to sub-partitions below & hence excluded from its effective_cpus.
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* For a valid partition root, its effective_cpus have no relationship
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* with cpus_allowed unless its exclusive_cpus isn't set.
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*
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* This value will only be set if either exclusive_cpus is set or
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* when this cpuset becomes a local partition root.
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*/
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cpumask_var_t effective_xcpus;
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/*
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* Exclusive CPUs as requested by the user (default hierarchy only)
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*
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* Its value is independent of cpus_allowed and designates the set of
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* CPUs that can be granted to the current cpuset or its children when
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* it becomes a valid partition root. The effective set of exclusive
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* CPUs granted (effective_xcpus) depends on whether those exclusive
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* CPUs are passed down by its ancestors and not yet taken up by
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* another sibling partition root along the way.
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*
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* If its value isn't set, it defaults to cpus_allowed.
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*/
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cpumask_var_t exclusive_cpus;
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/*
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* This is old Memory Nodes tasks took on.
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*
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* - top_cpuset.old_mems_allowed is initialized to mems_allowed.
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* - A new cpuset's old_mems_allowed is initialized when some
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* task is moved into it.
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* - old_mems_allowed is used in cpuset_migrate_mm() when we change
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* cpuset.mems_allowed and have tasks' nodemask updated, and
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* then old_mems_allowed is updated to mems_allowed.
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*/
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nodemask_t old_mems_allowed;
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struct fmeter fmeter; /* memory_pressure filter */
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/*
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* Tasks are being attached to this cpuset. Used to prevent
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* zeroing cpus/mems_allowed between ->can_attach() and ->attach().
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*/
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int attach_in_progress;
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/* for custom sched domain */
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int relax_domain_level;
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/* number of valid local child partitions */
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int nr_subparts;
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/* partition root state */
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int partition_root_state;
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/*
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* number of SCHED_DEADLINE tasks attached to this cpuset, so that we
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* know when to rebuild associated root domain bandwidth information.
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*/
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int nr_deadline_tasks;
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int nr_migrate_dl_tasks;
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u64 sum_migrate_dl_bw;
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/* Invalid partition error code, not lock protected */
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enum prs_errcode prs_err;
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/* Handle for cpuset.cpus.partition */
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struct cgroup_file partition_file;
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/* Remote partition silbling list anchored at remote_children */
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struct list_head remote_sibling;
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/* Used to merge intersecting subsets for generate_sched_domains */
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struct uf_node node;
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};
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/*
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* Legacy hierarchy call to cgroup_transfer_tasks() is handled asynchrously
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*/
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@ -280,22 +139,6 @@ struct tmpmasks {
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cpumask_var_t new_cpus; /* For update_cpumasks_hier() */
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};
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static inline struct cpuset *css_cs(struct cgroup_subsys_state *css)
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{
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return css ? container_of(css, struct cpuset, css) : NULL;
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}
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/* Retrieve the cpuset for a task */
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static inline struct cpuset *task_cs(struct task_struct *task)
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{
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return css_cs(task_css(task, cpuset_cgrp_id));
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}
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static inline struct cpuset *parent_cs(struct cpuset *cs)
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{
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return css_cs(cs->css.parent);
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}
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void inc_dl_tasks_cs(struct task_struct *p)
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{
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struct cpuset *cs = task_cs(p);
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@ -310,59 +153,6 @@ void dec_dl_tasks_cs(struct task_struct *p)
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cs->nr_deadline_tasks--;
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}
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/* bits in struct cpuset flags field */
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typedef enum {
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CS_ONLINE,
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CS_CPU_EXCLUSIVE,
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CS_MEM_EXCLUSIVE,
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CS_MEM_HARDWALL,
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CS_MEMORY_MIGRATE,
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CS_SCHED_LOAD_BALANCE,
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CS_SPREAD_PAGE,
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CS_SPREAD_SLAB,
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} cpuset_flagbits_t;
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/* convenient tests for these bits */
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static inline bool is_cpuset_online(struct cpuset *cs)
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{
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return test_bit(CS_ONLINE, &cs->flags) && !css_is_dying(&cs->css);
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}
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static inline int is_cpu_exclusive(const struct cpuset *cs)
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{
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return test_bit(CS_CPU_EXCLUSIVE, &cs->flags);
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}
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static inline int is_mem_exclusive(const struct cpuset *cs)
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{
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return test_bit(CS_MEM_EXCLUSIVE, &cs->flags);
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}
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static inline int is_mem_hardwall(const struct cpuset *cs)
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{
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return test_bit(CS_MEM_HARDWALL, &cs->flags);
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}
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||||
|
||||
static inline int is_sched_load_balance(const struct cpuset *cs)
|
||||
{
|
||||
return test_bit(CS_SCHED_LOAD_BALANCE, &cs->flags);
|
||||
}
|
||||
|
||||
static inline int is_memory_migrate(const struct cpuset *cs)
|
||||
{
|
||||
return test_bit(CS_MEMORY_MIGRATE, &cs->flags);
|
||||
}
|
||||
|
||||
static inline int is_spread_page(const struct cpuset *cs)
|
||||
{
|
||||
return test_bit(CS_SPREAD_PAGE, &cs->flags);
|
||||
}
|
||||
|
||||
static inline int is_spread_slab(const struct cpuset *cs)
|
||||
{
|
||||
return test_bit(CS_SPREAD_SLAB, &cs->flags);
|
||||
}
|
||||
|
||||
static inline int is_partition_valid(const struct cpuset *cs)
|
||||
{
|
||||
return cs->partition_root_state > 0;
|
||||
@ -3535,30 +3325,6 @@ out:
|
||||
mutex_unlock(&cpuset_mutex);
|
||||
}
|
||||
|
||||
/* The various types of files and directories in a cpuset file system */
|
||||
|
||||
typedef enum {
|
||||
FILE_MEMORY_MIGRATE,
|
||||
FILE_CPULIST,
|
||||
FILE_MEMLIST,
|
||||
FILE_EFFECTIVE_CPULIST,
|
||||
FILE_EFFECTIVE_MEMLIST,
|
||||
FILE_SUBPARTS_CPULIST,
|
||||
FILE_EXCLUSIVE_CPULIST,
|
||||
FILE_EFFECTIVE_XCPULIST,
|
||||
FILE_ISOLATED_CPULIST,
|
||||
FILE_CPU_EXCLUSIVE,
|
||||
FILE_MEM_EXCLUSIVE,
|
||||
FILE_MEM_HARDWALL,
|
||||
FILE_SCHED_LOAD_BALANCE,
|
||||
FILE_PARTITION_ROOT,
|
||||
FILE_SCHED_RELAX_DOMAIN_LEVEL,
|
||||
FILE_MEMORY_PRESSURE_ENABLED,
|
||||
FILE_MEMORY_PRESSURE,
|
||||
FILE_SPREAD_PAGE,
|
||||
FILE_SPREAD_SLAB,
|
||||
} cpuset_filetype_t;
|
||||
|
||||
static int cpuset_write_u64(struct cgroup_subsys_state *css, struct cftype *cft,
|
||||
u64 val)
|
||||
{
|
||||
|
||||
Loading…
Reference in New Issue
Block a user