include/linux/init_task.h - kernel/msm-4.19 - Gitiles

 #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 <linux/sched/autogroup.h>
 #include <net/net_namespace.h>
 #include <linux/sched/rt.h>
 #include <linux/mm_types.h>

 #include <asm/thread_info.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

 #ifndef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
 #define INIT_PREV_CPUTIME(x)	.prev_cputime = {			\
 	.lock = __RAW_SPIN_LOCK_UNLOCKED(x.prev_cputime.lock),		\
 },
 #else
 #define INIT_PREV_CPUTIME(x)
 #endif

 #ifdef CONFIG_POSIX_TIMERS
 #define INIT_POSIX_TIMERS(s)						\
 	.posix_timers = LIST_HEAD_INIT(s.posix_timers),
 #define INIT_CPU_TIMERS(s)						\
 	.cpu_timers = {							\
 		LIST_HEAD_INIT(s.cpu_timers[0]),			\
 		LIST_HEAD_INIT(s.cpu_timers[1]),			\
 		LIST_HEAD_INIT(s.cpu_timers[2]),								\
 	},
 #define INIT_CPUTIMER(s)						\
 	.cputimer	= { 						\
 		.cputime_atomic	= INIT_CPUTIME_ATOMIC,			\
 		.running	= false,				\
 		.checking_timer = false,				\
 	},
 #else
 #define INIT_POSIX_TIMERS(s)
 #define INIT_CPU_TIMERS(s)
 #define INIT_CPUTIMER(s)
 #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}}},					\
 	INIT_POSIX_TIMERS(sig)						\
 	INIT_CPU_TIMERS(sig)						\
 	.rlim		= INIT_RLIMITS,					\
 	INIT_CPUTIMER(sig)						\
 	INIT_PREV_CPUTIME(sig)						\
 	.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;

 #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_seqcount = SEQCNT_ZERO(tsk.vtime_seqcount),	\
 	.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

 #ifdef CONFIG_THREAD_INFO_IN_TASK
 # define INIT_TASK_TI(tsk)			\
 	.thread_info = INIT_THREAD_INFO(tsk),	\
 	.stack_refcount = ATOMIC_INIT(1),
 #else
 # define INIT_TASK_TI(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)	\
 {									\
 	INIT_TASK_TI(tsk)						\
 	.state		= 0,						\
 	.stack		= init_stack,					\
 	.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,						\
 	INIT_CPU_TIMERS(tsk)						\
 	.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_PREV_CPUTIME(tsk)						\
 	INIT_VTIME(tsk)							\
 	INIT_NUMA_BALANCING(tsk)					\
 	INIT_KASAN(tsk)							\
 }


 /* Attach to the init_task data structure for proper alignment */
 #define __init_task_data __attribute__((__section__(".data..init_task")))


 #endif
	#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 <linux/sched/autogroup.h>
	#include <net/net_namespace.h>
	#include <linux/sched/rt.h>
	#include <linux/mm_types.h>

	#include <asm/thread_info.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

	#ifndef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
	#define INIT_PREV_CPUTIME(x) .prev_cputime = { \
	.lock = __RAW_SPIN_LOCK_UNLOCKED(x.prev_cputime.lock), \
	},
	#else
	#define INIT_PREV_CPUTIME(x)
	#endif

	#ifdef CONFIG_POSIX_TIMERS
	#define INIT_POSIX_TIMERS(s) \
	.posix_timers = LIST_HEAD_INIT(s.posix_timers),
	#define INIT_CPU_TIMERS(s) \
	.cpu_timers = { \
	LIST_HEAD_INIT(s.cpu_timers[0]), \
	LIST_HEAD_INIT(s.cpu_timers[1]), \
	LIST_HEAD_INIT(s.cpu_timers[2]), \
	},
	#define INIT_CPUTIMER(s) \
	.cputimer = { \
	.cputime_atomic = INIT_CPUTIME_ATOMIC, \
	.running = false, \
	.checking_timer = false, \
	},
	#else
	#define INIT_POSIX_TIMERS(s)
	#define INIT_CPU_TIMERS(s)
	#define INIT_CPUTIMER(s)
	#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}}}, \
	INIT_POSIX_TIMERS(sig) \
	INIT_CPU_TIMERS(sig) \
	.rlim = INIT_RLIMITS, \
	INIT_CPUTIMER(sig) \
	INIT_PREV_CPUTIME(sig) \
	.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;

	#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_seqcount = SEQCNT_ZERO(tsk.vtime_seqcount), \
	.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

	#ifdef CONFIG_THREAD_INFO_IN_TASK
	# define INIT_TASK_TI(tsk) \
	.thread_info = INIT_THREAD_INFO(tsk), \
	.stack_refcount = ATOMIC_INIT(1),
	#else
	# define INIT_TASK_TI(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) \
	{ \
	INIT_TASK_TI(tsk) \
	.state = 0, \
	.stack = init_stack, \
	.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, \
	INIT_CPU_TIMERS(tsk) \
	.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_PREV_CPUTIME(tsk) \
	INIT_VTIME(tsk) \
	INIT_NUMA_BALANCING(tsk) \
	INIT_KASAN(tsk) \
	}


	/* Attach to the init_task data structure for proper alignment */
	#define __init_task_data __attribute__((__section__(".data..init_task")))


	#endif