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>

1 files changed, 4 insertions, 83 deletions

diff --git a/include/linux/init_task.h b/include/linux/init_task.h
index 30a89b99a5af..9711611b831d 100644
--- a/include/linux/init_task.h
+++ b/include/linux/init_task.h
@@ -218,91 +218,12 @@ extern struct cred init_cred;
 #define INIT_TASK_SECURITY
 #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)							\
-	INIT_LIVEPATCH(tsk)						\
-	INIT_TASK_SECURITY						\
-}
-
-
 /* Attach to the init_task data structure for proper alignment */
+#ifdef CONFIG_ARCH_TASK_STRUCT_ON_STACK
 #define __init_task_data __attribute__((__section__(".data..init_task")))
+#else
+#define __init_task_data /**/
+#endif
 
 /* Attach to the thread_info data structure for proper alignment */
 #define __init_thread_info __attribute__((__section__(".data..init_thread_info")))