mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-21 21:53:28 +07:00
bbe179f88d
Pull cgroup updates from Tejun Heo: - threadgroup_lock got reorganized so that its users can pick the actual locking mechanism to use. Its only user - cgroups - is updated to use a percpu_rwsem instead of per-process rwsem. This makes things a bit lighter on hot paths and allows cgroups to perform and fail multi-task (a process) migrations atomically. Multi-task migrations are used in several places including the unified hierarchy. - Delegation rule and documentation added to unified hierarchy. This will likely be the last interface update from the cgroup core side for unified hierarchy before lifting the devel mask. - Some groundwork for the pids controller which is scheduled to be merged in the coming devel cycle. * 'for-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: cgroup: add delegation section to unified hierarchy documentation cgroup: require write perm on common ancestor when moving processes on the default hierarchy cgroup: separate out cgroup_procs_write_permission() from __cgroup_procs_write() kernfs: make kernfs_get_inode() public MAINTAINERS: add a cgroup core co-maintainer cgroup: fix uninitialised iterator in for_each_subsys_which cgroup: replace explicit ss_mask checking with for_each_subsys_which cgroup: use bitmask to filter for_each_subsys cgroup: add seq_file forward declaration for struct cftype cgroup: simplify threadgroup locking sched, cgroup: replace signal_struct->group_rwsem with a global percpu_rwsem sched, cgroup: reorganize threadgroup locking cgroup: switch to unsigned long for bitmasks cgroup: reorganize include/linux/cgroup.h cgroup: separate out include/linux/cgroup-defs.h cgroup: fix some comment typos
267 lines
7.0 KiB
C
267 lines
7.0 KiB
C
#ifndef _LINUX__INIT_TASK_H
|
|
#define _LINUX__INIT_TASK_H
|
|
|
|
#include <linux/rcupdate.h>
|
|
#include <linux/irqflags.h>
|
|
#include <linux/utsname.h>
|
|
#include <linux/lockdep.h>
|
|
#include <linux/ftrace.h>
|
|
#include <linux/ipc.h>
|
|
#include <linux/pid_namespace.h>
|
|
#include <linux/user_namespace.h>
|
|
#include <linux/securebits.h>
|
|
#include <linux/seqlock.h>
|
|
#include <linux/rbtree.h>
|
|
#include <net/net_namespace.h>
|
|
#include <linux/sched/rt.h>
|
|
|
|
#ifdef CONFIG_SMP
|
|
# define INIT_PUSHABLE_TASKS(tsk) \
|
|
.pushable_tasks = PLIST_NODE_INIT(tsk.pushable_tasks, MAX_PRIO),
|
|
#else
|
|
# define INIT_PUSHABLE_TASKS(tsk)
|
|
#endif
|
|
|
|
extern struct files_struct init_files;
|
|
extern struct fs_struct init_fs;
|
|
|
|
#ifdef CONFIG_CPUSETS
|
|
#define INIT_CPUSET_SEQ(tsk) \
|
|
.mems_allowed_seq = SEQCNT_ZERO(tsk.mems_allowed_seq),
|
|
#else
|
|
#define INIT_CPUSET_SEQ(tsk)
|
|
#endif
|
|
|
|
#define INIT_SIGNALS(sig) { \
|
|
.nr_threads = 1, \
|
|
.thread_head = LIST_HEAD_INIT(init_task.thread_node), \
|
|
.wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\
|
|
.shared_pending = { \
|
|
.list = LIST_HEAD_INIT(sig.shared_pending.list), \
|
|
.signal = {{0}}}, \
|
|
.posix_timers = LIST_HEAD_INIT(sig.posix_timers), \
|
|
.cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \
|
|
.rlim = INIT_RLIMITS, \
|
|
.cputimer = { \
|
|
.cputime_atomic = INIT_CPUTIME_ATOMIC, \
|
|
.running = 0, \
|
|
}, \
|
|
.cred_guard_mutex = \
|
|
__MUTEX_INITIALIZER(sig.cred_guard_mutex), \
|
|
}
|
|
|
|
extern struct nsproxy init_nsproxy;
|
|
|
|
#define INIT_SIGHAND(sighand) { \
|
|
.count = ATOMIC_INIT(1), \
|
|
.action = { { { .sa_handler = SIG_DFL, } }, }, \
|
|
.siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \
|
|
.signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(sighand.signalfd_wqh), \
|
|
}
|
|
|
|
extern struct group_info init_groups;
|
|
|
|
#define INIT_STRUCT_PID { \
|
|
.count = ATOMIC_INIT(1), \
|
|
.tasks = { \
|
|
{ .first = NULL }, \
|
|
{ .first = NULL }, \
|
|
{ .first = NULL }, \
|
|
}, \
|
|
.level = 0, \
|
|
.numbers = { { \
|
|
.nr = 0, \
|
|
.ns = &init_pid_ns, \
|
|
.pid_chain = { .next = NULL, .pprev = NULL }, \
|
|
}, } \
|
|
}
|
|
|
|
#define INIT_PID_LINK(type) \
|
|
{ \
|
|
.node = { \
|
|
.next = NULL, \
|
|
.pprev = NULL, \
|
|
}, \
|
|
.pid = &init_struct_pid, \
|
|
}
|
|
|
|
#ifdef CONFIG_AUDITSYSCALL
|
|
#define INIT_IDS \
|
|
.loginuid = INVALID_UID, \
|
|
.sessionid = (unsigned int)-1,
|
|
#else
|
|
#define INIT_IDS
|
|
#endif
|
|
|
|
#ifdef CONFIG_PREEMPT_RCU
|
|
#define INIT_TASK_RCU_TREE_PREEMPT() \
|
|
.rcu_blocked_node = NULL,
|
|
#else
|
|
#define INIT_TASK_RCU_TREE_PREEMPT(tsk)
|
|
#endif
|
|
#ifdef CONFIG_PREEMPT_RCU
|
|
#define INIT_TASK_RCU_PREEMPT(tsk) \
|
|
.rcu_read_lock_nesting = 0, \
|
|
.rcu_read_unlock_special.s = 0, \
|
|
.rcu_node_entry = LIST_HEAD_INIT(tsk.rcu_node_entry), \
|
|
INIT_TASK_RCU_TREE_PREEMPT()
|
|
#else
|
|
#define INIT_TASK_RCU_PREEMPT(tsk)
|
|
#endif
|
|
#ifdef CONFIG_TASKS_RCU
|
|
#define INIT_TASK_RCU_TASKS(tsk) \
|
|
.rcu_tasks_holdout = false, \
|
|
.rcu_tasks_holdout_list = \
|
|
LIST_HEAD_INIT(tsk.rcu_tasks_holdout_list), \
|
|
.rcu_tasks_idle_cpu = -1,
|
|
#else
|
|
#define INIT_TASK_RCU_TASKS(tsk)
|
|
#endif
|
|
|
|
extern struct cred init_cred;
|
|
|
|
extern struct task_group root_task_group;
|
|
|
|
#ifdef CONFIG_CGROUP_SCHED
|
|
# define INIT_CGROUP_SCHED(tsk) \
|
|
.sched_task_group = &root_task_group,
|
|
#else
|
|
# define INIT_CGROUP_SCHED(tsk)
|
|
#endif
|
|
|
|
#ifdef CONFIG_PERF_EVENTS
|
|
# define INIT_PERF_EVENTS(tsk) \
|
|
.perf_event_mutex = \
|
|
__MUTEX_INITIALIZER(tsk.perf_event_mutex), \
|
|
.perf_event_list = LIST_HEAD_INIT(tsk.perf_event_list),
|
|
#else
|
|
# define INIT_PERF_EVENTS(tsk)
|
|
#endif
|
|
|
|
#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN
|
|
# define INIT_VTIME(tsk) \
|
|
.vtime_seqlock = __SEQLOCK_UNLOCKED(tsk.vtime_seqlock), \
|
|
.vtime_snap = 0, \
|
|
.vtime_snap_whence = VTIME_SYS,
|
|
#else
|
|
# define INIT_VTIME(tsk)
|
|
#endif
|
|
|
|
#define INIT_TASK_COMM "swapper"
|
|
|
|
#ifdef CONFIG_RT_MUTEXES
|
|
# define INIT_RT_MUTEXES(tsk) \
|
|
.pi_waiters = RB_ROOT, \
|
|
.pi_waiters_leftmost = NULL,
|
|
#else
|
|
# define INIT_RT_MUTEXES(tsk)
|
|
#endif
|
|
|
|
#ifdef CONFIG_NUMA_BALANCING
|
|
# define INIT_NUMA_BALANCING(tsk) \
|
|
.numa_preferred_nid = -1, \
|
|
.numa_group = NULL, \
|
|
.numa_faults = NULL,
|
|
#else
|
|
# define INIT_NUMA_BALANCING(tsk)
|
|
#endif
|
|
|
|
#ifdef CONFIG_KASAN
|
|
# define INIT_KASAN(tsk) \
|
|
.kasan_depth = 1,
|
|
#else
|
|
# define INIT_KASAN(tsk)
|
|
#endif
|
|
|
|
/*
|
|
* INIT_TASK is used to set up the first task table, touch at
|
|
* your own risk!. Base=0, limit=0x1fffff (=2MB)
|
|
*/
|
|
#define INIT_TASK(tsk) \
|
|
{ \
|
|
.state = 0, \
|
|
.stack = &init_thread_info, \
|
|
.usage = ATOMIC_INIT(2), \
|
|
.flags = PF_KTHREAD, \
|
|
.prio = MAX_PRIO-20, \
|
|
.static_prio = MAX_PRIO-20, \
|
|
.normal_prio = MAX_PRIO-20, \
|
|
.policy = SCHED_NORMAL, \
|
|
.cpus_allowed = CPU_MASK_ALL, \
|
|
.nr_cpus_allowed= NR_CPUS, \
|
|
.mm = NULL, \
|
|
.active_mm = &init_mm, \
|
|
.restart_block = { \
|
|
.fn = do_no_restart_syscall, \
|
|
}, \
|
|
.se = { \
|
|
.group_node = LIST_HEAD_INIT(tsk.se.group_node), \
|
|
}, \
|
|
.rt = { \
|
|
.run_list = LIST_HEAD_INIT(tsk.rt.run_list), \
|
|
.time_slice = RR_TIMESLICE, \
|
|
}, \
|
|
.tasks = LIST_HEAD_INIT(tsk.tasks), \
|
|
INIT_PUSHABLE_TASKS(tsk) \
|
|
INIT_CGROUP_SCHED(tsk) \
|
|
.ptraced = LIST_HEAD_INIT(tsk.ptraced), \
|
|
.ptrace_entry = LIST_HEAD_INIT(tsk.ptrace_entry), \
|
|
.real_parent = &tsk, \
|
|
.parent = &tsk, \
|
|
.children = LIST_HEAD_INIT(tsk.children), \
|
|
.sibling = LIST_HEAD_INIT(tsk.sibling), \
|
|
.group_leader = &tsk, \
|
|
RCU_POINTER_INITIALIZER(real_cred, &init_cred), \
|
|
RCU_POINTER_INITIALIZER(cred, &init_cred), \
|
|
.comm = INIT_TASK_COMM, \
|
|
.thread = INIT_THREAD, \
|
|
.fs = &init_fs, \
|
|
.files = &init_files, \
|
|
.signal = &init_signals, \
|
|
.sighand = &init_sighand, \
|
|
.nsproxy = &init_nsproxy, \
|
|
.pending = { \
|
|
.list = LIST_HEAD_INIT(tsk.pending.list), \
|
|
.signal = {{0}}}, \
|
|
.blocked = {{0}}, \
|
|
.alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \
|
|
.journal_info = NULL, \
|
|
.cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \
|
|
.pi_lock = __RAW_SPIN_LOCK_UNLOCKED(tsk.pi_lock), \
|
|
.timer_slack_ns = 50000, /* 50 usec default slack */ \
|
|
.pids = { \
|
|
[PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), \
|
|
[PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \
|
|
[PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \
|
|
}, \
|
|
.thread_group = LIST_HEAD_INIT(tsk.thread_group), \
|
|
.thread_node = LIST_HEAD_INIT(init_signals.thread_head), \
|
|
INIT_IDS \
|
|
INIT_PERF_EVENTS(tsk) \
|
|
INIT_TRACE_IRQFLAGS \
|
|
INIT_LOCKDEP \
|
|
INIT_FTRACE_GRAPH \
|
|
INIT_TRACE_RECURSION \
|
|
INIT_TASK_RCU_PREEMPT(tsk) \
|
|
INIT_TASK_RCU_TASKS(tsk) \
|
|
INIT_CPUSET_SEQ(tsk) \
|
|
INIT_RT_MUTEXES(tsk) \
|
|
INIT_VTIME(tsk) \
|
|
INIT_NUMA_BALANCING(tsk) \
|
|
INIT_KASAN(tsk) \
|
|
}
|
|
|
|
|
|
#define INIT_CPU_TIMERS(cpu_timers) \
|
|
{ \
|
|
LIST_HEAD_INIT(cpu_timers[0]), \
|
|
LIST_HEAD_INIT(cpu_timers[1]), \
|
|
LIST_HEAD_INIT(cpu_timers[2]), \
|
|
}
|
|
|
|
/* Attach to the init_task data structure for proper alignment */
|
|
#define __init_task_data __attribute__((__section__(".data..init_task")))
|
|
|
|
|
|
#endif
|