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| author | David Howells <dhowells@redhat.com> | 2018-01-02 16:12:01 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2018-01-17 12:30:16 +0100 |
| commit | d11ed3ab3166a2bfad60681aebf3e13e1c3408a9 (patch) | |
| tree | 9554041f207fc79493f17b92e88d2dcebd107e94 /init | |
| parent | Construct init thread stack in the linker script rather than by union (diff) | |
| download | linux-d11ed3ab3166a2bfad60681aebf3e13e1c3408a9.tar.xz linux-d11ed3ab3166a2bfad60681aebf3e13e1c3408a9.zip | |
Expand INIT_TASK() in init/init_task.c and remove
It's no longer necessary to have an INIT_TASK() macro, and this can be
expanded into the one place it is now used and removed.
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: Tony Luck <tony.luck@intel.com>
Tested-by: Will Deacon <will.deacon@arm.com> (arm64)
Tested-by: Palmer Dabbelt <palmer@sifive.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'init')
| -rw-r--r-- | init/init_task.c | 85 |
1 files changed, 83 insertions, 2 deletions
diff --git a/init/init_task.c b/init/init_task.c index 2285aa42cbe1..7b2436f02dad 100644 --- a/init/init_task.c +++ b/init/init_task.c @@ -16,12 +16,93 @@ static struct signal_struct init_signals = INIT_SIGNALS(init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); -/* Initial task structure */ + +/* + * Set up the first task table, touch at your own risk!. Base=0, + * limit=0x1fffff (=2MB) + */ struct task_struct init_task #ifdef CONFIG_ARCH_TASK_STRUCT_ON_STACK __init_task_data #endif - = INIT_TASK(init_task); += { + INIT_TASK_TI(init_task) + .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(init_task.se.group_node), + }, + .rt = { + .run_list = LIST_HEAD_INIT(init_task.rt.run_list), + .time_slice = RR_TIMESLICE, + }, + .tasks = LIST_HEAD_INIT(init_task.tasks), + INIT_PUSHABLE_TASKS(init_task) + INIT_CGROUP_SCHED(init_task) + .ptraced = LIST_HEAD_INIT(init_task.ptraced), + .ptrace_entry = LIST_HEAD_INIT(init_task.ptrace_entry), + .real_parent = &init_task, + .parent = &init_task, + .children = LIST_HEAD_INIT(init_task.children), + .sibling = LIST_HEAD_INIT(init_task.sibling), + .group_leader = &init_task, + 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(init_task.pending.list), + .signal = {{0}} + }, + .blocked = {{0}}, + .alloc_lock = __SPIN_LOCK_UNLOCKED(init_task.alloc_lock), + .journal_info = NULL, + INIT_CPU_TIMERS(init_task) + .pi_lock = __RAW_SPIN_LOCK_UNLOCKED(init_task.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(init_task.thread_group), + .thread_node = LIST_HEAD_INIT(init_signals.thread_head), + INIT_IDS + INIT_PERF_EVENTS(init_task) + INIT_TRACE_IRQFLAGS + INIT_LOCKDEP + INIT_FTRACE_GRAPH + INIT_TRACE_RECURSION + INIT_TASK_RCU_PREEMPT(init_task) + INIT_TASK_RCU_TASKS(init_task) + INIT_CPUSET_SEQ(init_task) + INIT_RT_MUTEXES(init_task) + INIT_PREV_CPUTIME(init_task) + INIT_VTIME(init_task) + INIT_NUMA_BALANCING(init_task) + INIT_KASAN(init_task) + INIT_LIVEPATCH(init_task) + INIT_TASK_SECURITY +}; + EXPORT_SYMBOL(init_task); /* |