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*参照元 [#ab08d774] *参照元 [#yff00dde] #backlinks *説明 [#ibe9b87c] -パス: 複数あり --arm 版: [[linux-2.6.33/task_struct(arm)]] *説明 [#je0669e6] -パス: [[linux-2.6.33/include/linux/sched.h]] -FIXME: これは何？ --説明 **参考 [#g21655af] **参考 [#j77f137c] *実装 [#y4671fd0] -各アーキテクチャのページを参照してください。 *実装 [#x8adc4a3] struct task_struct { volatile long state; /* -1 unrunnable, 0 runnable, >0 stopped */ void *stack; atomic_t usage; - --[[linux-2.6.33/atomic_t]] unsigned int flags; /* per process flags, defined below */ unsigned int ptrace; int lock_depth; /* BKL lock depth */ #ifdef CONFIG_SMP #ifdef __ARCH_WANT_UNLOCKED_CTXSW - --[[linux-2.6.33/CONFIG_SMP]] - --[[linux-2.6.33/__ARCH_WANT_UNLOCKED_CTXSW]] *コメント [#rfb014d7] int oncpu; #endif #endif int prio, static_prio, normal_prio; unsigned int rt_priority; const struct sched_class *sched_class; struct sched_entity se; struct sched_rt_entity rt; - --[[linux-2.6.33/sched_class]] - --[[linux-2.6.33/sched_entity]] - --[[linux-2.6.33/sched_rt_entity]] #ifdef CONFIG_PREEMPT_NOTIFIERS - --[[linux-2.6.33/CONFIG_PREEMPT_NOTIFIERS]] /* list of struct preempt_notifier: */ struct hlist_head preempt_notifiers; - --[[linux-2.6.33/hlist_head]] #endif /* * fpu_counter contains the number of consecutive context switches * that the FPU is used. If this is over a threshold, the lazy fpu * saving becomes unlazy to save the trap. This is an unsigned char * so that after 256 times the counter wraps and the behavior turns * lazy again; this to deal with bursty apps that only use FPU for * a short time */ unsigned char fpu_counter; #ifdef CONFIG_BLK_DEV_IO_TRACE - --[[linux-2.6.33/CONFIG_BLK_DEV_IO_TRACE]] unsigned int btrace_seq; #endif unsigned int policy; cpumask_t cpus_allowed; - --[[linux-2.6.33/cpumask_t]] #ifdef CONFIG_TREE_PREEMPT_RCU - --[[linux-2.6.33/CONFIG_TREE_PREEMPT_RCU]] int rcu_read_lock_nesting; char rcu_read_unlock_special; struct rcu_node *rcu_blocked_node; struct list_head rcu_node_entry; - --[[linux-2.6.33/rcu_node]] - --[[linux-2.6.33/list_head]] #endif /* #ifdef CONFIG_TREE_PREEMPT_RCU */ #if defined(CONFIG_SCHEDSTATS) || defined(CONFIG_TASK_DELAY_ACCT) - --[[linux-2.6.33/CONFIG_SCHEDSTATS]] - --[[linux-2.6.33/CONFIG_TASK_DELAY_ACCT]] struct sched_info sched_info; - --[[linux-2.6.33/sched_info]] #endif struct list_head tasks; struct plist_node pushable_tasks; - --[[linux-2.6.33/list_head]] - --[[linux-2.6.33/plist_node]] struct mm_struct *mm, *active_mm; - --[[linux-2.6.33/mm_struct]] /* task state */ int exit_state; int exit_code, exit_signal; int pdeath_signal; /* The signal sent when the parent dies */ /* ??? */ unsigned int personality; unsigned did_exec:1; unsigned in_execve:1; /* Tell the LSMs that the process is doing an * execve */ unsigned in_iowait:1; /* Revert to default priority/policy when forking */ unsigned sched_reset_on_fork:1; pid_t pid; pid_t tgid; - --[[linux-2.6.33/pid_t]] #ifdef CONFIG_CC_STACKPROTECTOR - --[[linux-2.6.33/CONFIG_CC_STACKPROTECTOR]] /* Canary value for the -fstack-protector gcc feature */ unsigned long stack_canary; #endif /* * pointers to (original) parent process, youngest child, younger sibling, * older sibling, respectively. (p->father can be replaced with * p->real_parent->pid) */ struct task_struct *real_parent; /* real parent process */ struct task_struct *parent; /* recipient of SIGCHLD, wait4() reports */ - --[[linux-2.6.33/task_struct]] /* * children/sibling forms the list of my natural children */ struct list_head children; /* list of my children */ struct list_head sibling; /* linkage in my parent's children list */ struct task_struct *group_leader; /* threadgroup leader */ - --[[linux-2.6.33/list_head]] /* * ptraced is the list of tasks this task is using ptrace on. * This includes both natural children and PTRACE_ATTACH targets. * p->ptrace_entry is p's link on the p->parent->ptraced list. */ struct list_head ptraced; struct list_head ptrace_entry; /* * This is the tracer handle for the ptrace BTS extension. * This field actually belongs to the ptracer task. */ struct bts_context *bts; - --[[linux-2.6.33/bts_context]] /* PID/PID hash table linkage. */ struct pid_link pids[PIDTYPE_MAX]; struct list_head thread_group; - --[[linux-2.6.33/pid_link]] struct completion *vfork_done; /* for vfork() */ int __user *set_child_tid; /* CLONE_CHILD_SETTID */ int __user *clear_child_tid; /* CLONE_CHILD_CLEARTID */ - --[[linux-2.6.33/completion]] - --[[linux-2.6.33/__user]] cputime_t utime, stime, utimescaled, stimescaled; cputime_t gtime; - --[[linux-2.6.33/cputime_t]] #ifndef CONFIG_VIRT_CPU_ACCOUNTING - --[[linux-2.6.33/CONFIG_VIRT_CPU_ACCOUNTING]] cputime_t prev_utime, prev_stime; #endif unsigned long nvcsw, nivcsw; /* context switch counts */ struct timespec start_time; /* monotonic time */ struct timespec real_start_time; /* boot based time */ - --[[linux-2.6.33/timespec]] /* mm fault and swap info: this can arguably be seen as either mm-specific or thread-specific */ unsigned long min_flt, maj_flt; struct task_cputime cputime_expires; struct list_head cpu_timers[3]; - --[[linux-2.6.33/task_cputime]] /* process credentials */ const struct cred *real_cred; /* objective and real subjective task * credentials (COW) */ const struct cred *cred; /* effective (overridable) subjective task * credentials (COW) */ - --[[linux-2.6.33/cred]] struct mutex cred_guard_mutex; /* guard against foreign influences on * credential calculations * (notably. ptrace) */ struct cred *replacement_session_keyring; /* for KEYCTL_SESSION_TO_PARENT */ - --[[linux-2.6.33/cred]] - --[[linux-2.6.33/mutex]] char comm[TASK_COMM_LEN]; /* executable name excluding path - access with [gs]et_task_comm (which lock it with task_lock()) - initialized normally by setup_new_exec */ /* file system info */ int link_count, total_link_count; #ifdef CONFIG_SYSVIPC - --[[linux-2.6.33/CONFIG_SYSVIPC]] /* ipc stuff */ struct sysv_sem sysvsem; - --[[linux-2.6.33/sysv_sem]] #endif #ifdef CONFIG_DETECT_HUNG_TASK - --[[linux-2.6.33/CONFIG_DETECT_HUNG_TASK]] /* hung task detection */ unsigned long last_switch_count; #endif /* CPU-specific state of this task */ struct thread_struct thread; - --[[linux-2.6.33/thread_struct]] /* filesystem information */ struct fs_struct *fs; - --[[linux-2.6.33/fs_struct]] /* open file information */ struct files_struct *files; - --[[linux-2.6.33/files_struct]] /* namespaces */ struct nsproxy *nsproxy; - --[[linux-2.6.33/nsproxy]] /* signal handlers */ struct signal_struct *signal; struct sighand_struct *sighand; - --[[linux-2.6.33/signal_struct]] - --[[linux-2.6.33/sighand_struct]] sigset_t blocked, real_blocked; sigset_t saved_sigmask; /* restored if set_restore_sigmask() was used */ struct sigpending pending; - --[[linux-2.6.33/sigset_t]] - --[[linux-2.6.33/sigpending]] unsigned long sas_ss_sp; size_t sas_ss_size; int (*notifier)(void *priv); void *notifier_data; sigset_t *notifier_mask; struct audit_context *audit_context; - --[[linux-2.6.33/audit_context]] #ifdef CONFIG_AUDITSYSCALL - --[[linux-2.6.33/CONFIG_AUDITSYSCALL]] uid_t loginuid; unsigned int sessionid; #endif seccomp_t seccomp; - --[[linux-2.6.33/seccomp_t]] /* Thread group tracking */ u32 parent_exec_id; u32 self_exec_id; /* Protection of (de-)allocation: mm, files, fs, tty, keyrings, mems_allowed, * mempolicy */ spinlock_t alloc_lock; - --[[linux-2.6.33/spinlock_t]] #ifdef CONFIG_GENERIC_HARDIRQS - --[[linux-2.6.33/CONFIG_GENERIC_HARDIRQS]] /* IRQ handler threads */ struct irqaction *irqaction; - --[[linux-2.6.33/irqaction]] #endif /* Protection of the PI data structures: */ raw_spinlock_t pi_lock; - --[[linux-2.6.33/raw_spinlock_t]] #ifdef CONFIG_RT_MUTEXES - --[[linux-2.6.33/CONFIG_RT_MUTEXES]] /* PI waiters blocked on a rt_mutex held by this task */ struct plist_head pi_waiters; /* Deadlock detection and priority inheritance handling */ struct rt_mutex_waiter *pi_blocked_on; - --[[linux-2.6.33/plist_head]] - --[[linux-2.6.33/rt_mutex_waiter]] #endif #ifdef CONFIG_DEBUG_MUTEXES - --[[linux-2.6.33/CONFIG_DEBUG_MUTEXES]] /* mutex deadlock detection */ struct mutex_waiter *blocked_on; - --[[linux-2.6.33/mutex_waiter]] #endif #ifdef CONFIG_TRACE_IRQFLAGS - --[[linux-2.6.33/CONFIG_TRACE_IRQFLAGS]] unsigned int irq_events; unsigned long hardirq_enable_ip; unsigned long hardirq_disable_ip; unsigned int hardirq_enable_event; unsigned int hardirq_disable_event; int hardirqs_enabled; int hardirq_context; unsigned long softirq_disable_ip; unsigned long softirq_enable_ip; unsigned int softirq_disable_event; unsigned int softirq_enable_event; int softirqs_enabled; int softirq_context; #endif #ifdef CONFIG_LOCKDEP - --[[linux-2.6.33/CONFIG_LOCKDEP]] # define MAX_LOCK_DEPTH 48UL u64 curr_chain_key; int lockdep_depth; unsigned int lockdep_recursion; struct held_lock held_locks[MAX_LOCK_DEPTH]; gfp_t lockdep_reclaim_gfp; - --[[linux-2.6.33/held_lock]] - --[[linux-2.6.33/gfp_t]] #endif /* journalling filesystem info */ void *journal_info; /* stacked block device info */ struct bio *bio_list, **bio_tail; - --[[linux-2.6.33/bio]] /* VM state */ struct reclaim_state *reclaim_state; - --[[linux-2.6.33/reclaim_state]] struct backing_dev_info *backing_dev_info; - --[[linux-2.6.33/backing_dev_info]] struct io_context *io_context; - --[[linux-2.6.33/io_context]] unsigned long ptrace_message; siginfo_t *last_siginfo; /* For ptrace use. */ struct task_io_accounting ioac; - --[[linux-2.6.33/siginfo_t]] - --[[linux-2.6.33/task_io_accounting]] #if defined(CONFIG_TASK_XACCT) - --[[linux-2.6.33/CONFIG_TASK_XACCT]] u64 acct_rss_mem1; /* accumulated rss usage */ u64 acct_vm_mem1; /* accumulated virtual memory usage */ cputime_t acct_timexpd; /* stime + utime since last update */ - --[[linux-2.6.33/cputime_t]] #endif #ifdef CONFIG_CPUSETS - --[[linux-2.6.33/CONFIG_CPUSETS]] nodemask_t mems_allowed; /* Protected by alloc_lock */ int cpuset_mem_spread_rotor; - --[[linux-2.6.33/nodemask_t]] #endif #ifdef CONFIG_CGROUPS - --[[linux-2.6.33/CONFIG_CGROUPS]] /* Control Group info protected by css_set_lock */ struct css_set *cgroups; /* cg_list protected by css_set_lock and tsk->alloc_lock */ struct list_head cg_list; - --[[linux-2.6.33/css_set]] - --[[linux-2.6.33/list_head]] #endif #ifdef CONFIG_FUTEX - --[[linux-2.6.33/CONFIG_FUTEX]] struct robust_list_head __user *robust_list; - --[[linux-2.6.33/robust_list_head]] #ifdef CONFIG_COMPAT - --[[linux-2.6.33/CONFIG_COMPAT]] struct compat_robust_list_head __user *compat_robust_list; - --[[linux-2.6.33/compat_robust_list_head]] #endif struct list_head pi_state_list; struct futex_pi_state *pi_state_cache; - --[[linux-2.6.33/list_head]] - --[[linux-2.6.33/futex_pi_state]] #endif #ifdef CONFIG_PERF_EVENTS - --[[linux-2.6.33/CONFIG_PREF_EVENTS]] struct perf_event_context *perf_event_ctxp; struct mutex perf_event_mutex; struct list_head perf_event_list; - --[[linux-2.6.33/perf_event_context]] - --[[linux-2.6.33/mutex]] - --[[linux-2.6.33/list_head]] #endif #ifdef CONFIG_NUMA - --[[linux-2.6.33/CONFIG_NUMA]] struct mempolicy *mempolicy; /* Protected by alloc_lock */ short il_next; - --[[linux-2.6.33/mempolicy]] #endif atomic_t fs_excl; /* holding fs exclusive resources */ struct rcu_head rcu; - --[[linux-2.6.33/atomic_t]] - --[[linux-2.6.33/rcu_head]] /* * cache last used pipe for splice */ struct pipe_inode_info *splice_pipe; - --[[linux-2.6.33/pipe_inode_info]] #ifdef CONFIG_TASK_DELAY_ACCT - --[[linux-2.6.33/CONFIG_TASK_DELAY_ACCT]] struct task_delay_info *delays; - --[[linux-2.6.33/task_delay_info]] #endif #ifdef CONFIG_FAULT_INJECTION - --[[linux-2.6.33/CONFIG_FAULT_INJECTION]] int make_it_fail; #endif struct prop_local_single dirties; - --[[linux-2.6.33/prop_local_single]] #ifdef CONFIG_LATENCYTOP - --[[linux-2.6.33/CONFIG_LATENCYTOP]] int latency_record_count; struct latency_record latency_record[LT_SAVECOUNT]; - --[[linux-2.6.33/latency_record]] - --[[linux-2.6.33/LT_SAVECOUNT]] #endif /* * time slack values; these are used to round up poll() and * select() etc timeout values. These are in nanoseconds. */ unsigned long timer_slack_ns; unsigned long default_timer_slack_ns; struct list_head *scm_work_list; #ifdef CONFIG_FUNCTION_GRAPH_TRACER - --[[linux-2.6.33/CONFIG_FUNCTION_GRAPH_TRACER]] /* Index of current stored adress in ret_stack */ int curr_ret_stack; /* Stack of return addresses for return function tracing */ struct ftrace_ret_stack *ret_stack; /* time stamp for last schedule */ unsigned long long ftrace_timestamp; - --[[linux-2.6.33/ftrace_ret_stack]] /* * Number of functions that haven't been traced * because of depth overrun. */ atomic_t trace_overrun; /* Pause for the tracing */ atomic_t tracing_graph_pause; - --[[linux-2.6.33/atomic_t]] #endif #ifdef CONFIG_TRACING - --[[linux-2.6.33/CONFIG_TRACING]] /* state flags for use by tracers */ unsigned long trace; /* bitmask of trace recursion */ unsigned long trace_recursion; #endif /* CONFIG_TRACING */ unsigned long stack_start; #ifdef CONFIG_CGROUP_MEM_RES_CTLR /* memcg uses this to do batch job */ - --[[linux-2.6.33/CONFIG_CGROUP_MEM_RES_CTLR]] struct memcg_batch_info { int do_batch; /* incremented when batch uncharge started */ struct mem_cgroup *memcg; /* target memcg of uncharge */ unsigned long bytes; /* uncharged usage */ unsigned long memsw_bytes; /* uncharged mem+swap usage */ } memcg_batch; - --[[linux-2.6.33/mem_cgroup]] #endif }; *コメント [#lf590df6]
