f7e4217b00
This finally renames the thread_info field in task structure to stack, so that the assumptions about this field are gone and archs have more freedom about placing the thread_info structure. Nonbroken archs which have a proper thread pointer can do the access to both current thread and task structure via a single pointer. It'll allow for a few more cleanups of the fork code, from which e.g. ia64 could benefit. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> [akpm@linux-foundation.org: build fix] Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ian Molton <spyro@f2s.com> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Mikael Starvik <starvik@axis.com> Cc: David Howells <dhowells@redhat.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Greg Ungerer <gerg@uclinux.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp> Cc: Richard Curnow <rc@rc0.org.uk> Cc: William Lee Irwin III <wli@holomorphy.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp> Cc: Andi Kleen <ak@muc.de> Cc: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
156 lines
4.3 KiB
C
156 lines
4.3 KiB
C
#ifndef _LINUX__INIT_TASK_H
|
|
#define _LINUX__INIT_TASK_H
|
|
|
|
#include <linux/file.h>
|
|
#include <linux/rcupdate.h>
|
|
#include <linux/irqflags.h>
|
|
#include <linux/utsname.h>
|
|
#include <linux/lockdep.h>
|
|
#include <linux/ipc.h>
|
|
#include <linux/pid_namespace.h>
|
|
|
|
#define INIT_FDTABLE \
|
|
{ \
|
|
.max_fds = NR_OPEN_DEFAULT, \
|
|
.fd = &init_files.fd_array[0], \
|
|
.close_on_exec = (fd_set *)&init_files.close_on_exec_init, \
|
|
.open_fds = (fd_set *)&init_files.open_fds_init, \
|
|
.rcu = RCU_HEAD_INIT, \
|
|
.next = NULL, \
|
|
}
|
|
|
|
#define INIT_FILES \
|
|
{ \
|
|
.count = ATOMIC_INIT(1), \
|
|
.fdt = &init_files.fdtab, \
|
|
.fdtab = INIT_FDTABLE, \
|
|
.file_lock = __SPIN_LOCK_UNLOCKED(init_task.file_lock), \
|
|
.next_fd = 0, \
|
|
.close_on_exec_init = { { 0, } }, \
|
|
.open_fds_init = { { 0, } }, \
|
|
.fd_array = { NULL, } \
|
|
}
|
|
|
|
#define INIT_KIOCTX(name, which_mm) \
|
|
{ \
|
|
.users = ATOMIC_INIT(1), \
|
|
.dead = 0, \
|
|
.mm = &which_mm, \
|
|
.user_id = 0, \
|
|
.next = NULL, \
|
|
.wait = __WAIT_QUEUE_HEAD_INITIALIZER(name.wait), \
|
|
.ctx_lock = __SPIN_LOCK_UNLOCKED(name.ctx_lock), \
|
|
.reqs_active = 0U, \
|
|
.max_reqs = ~0U, \
|
|
}
|
|
|
|
#define INIT_MM(name) \
|
|
{ \
|
|
.mm_rb = RB_ROOT, \
|
|
.pgd = swapper_pg_dir, \
|
|
.mm_users = ATOMIC_INIT(2), \
|
|
.mm_count = ATOMIC_INIT(1), \
|
|
.mmap_sem = __RWSEM_INITIALIZER(name.mmap_sem), \
|
|
.page_table_lock = __SPIN_LOCK_UNLOCKED(name.page_table_lock), \
|
|
.mmlist = LIST_HEAD_INIT(name.mmlist), \
|
|
.cpu_vm_mask = CPU_MASK_ALL, \
|
|
}
|
|
|
|
#define INIT_SIGNALS(sig) { \
|
|
.count = ATOMIC_INIT(1), \
|
|
.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, \
|
|
.pgrp = 1, \
|
|
.tty_old_pgrp = NULL, \
|
|
{ .__session = 1}, \
|
|
}
|
|
|
|
extern struct nsproxy init_nsproxy;
|
|
#define INIT_NSPROXY(nsproxy) { \
|
|
.pid_ns = &init_pid_ns, \
|
|
.count = ATOMIC_INIT(1), \
|
|
.nslock = __SPIN_LOCK_UNLOCKED(nsproxy.nslock), \
|
|
.uts_ns = &init_uts_ns, \
|
|
.mnt_ns = NULL, \
|
|
INIT_IPC_NS(ipc_ns) \
|
|
}
|
|
|
|
#define INIT_SIGHAND(sighand) { \
|
|
.count = ATOMIC_INIT(1), \
|
|
.action = { { { .sa_handler = NULL, } }, }, \
|
|
.siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \
|
|
}
|
|
|
|
extern struct group_info init_groups;
|
|
|
|
/*
|
|
* 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 = 0, \
|
|
.lock_depth = -1, \
|
|
.prio = MAX_PRIO-20, \
|
|
.static_prio = MAX_PRIO-20, \
|
|
.normal_prio = MAX_PRIO-20, \
|
|
.policy = SCHED_NORMAL, \
|
|
.cpus_allowed = CPU_MASK_ALL, \
|
|
.mm = NULL, \
|
|
.active_mm = &init_mm, \
|
|
.run_list = LIST_HEAD_INIT(tsk.run_list), \
|
|
.ioprio = 0, \
|
|
.time_slice = HZ, \
|
|
.tasks = LIST_HEAD_INIT(tsk.tasks), \
|
|
.ptrace_children= LIST_HEAD_INIT(tsk.ptrace_children), \
|
|
.ptrace_list = LIST_HEAD_INIT(tsk.ptrace_list), \
|
|
.real_parent = &tsk, \
|
|
.parent = &tsk, \
|
|
.children = LIST_HEAD_INIT(tsk.children), \
|
|
.sibling = LIST_HEAD_INIT(tsk.sibling), \
|
|
.group_leader = &tsk, \
|
|
.group_info = &init_groups, \
|
|
.cap_effective = CAP_INIT_EFF_SET, \
|
|
.cap_inheritable = CAP_INIT_INH_SET, \
|
|
.cap_permitted = CAP_FULL_SET, \
|
|
.keep_capabilities = 0, \
|
|
.user = INIT_USER, \
|
|
.comm = "swapper", \
|
|
.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), \
|
|
.fs_excl = ATOMIC_INIT(0), \
|
|
.pi_lock = __SPIN_LOCK_UNLOCKED(tsk.pi_lock), \
|
|
INIT_TRACE_IRQFLAGS \
|
|
INIT_LOCKDEP \
|
|
}
|
|
|
|
|
|
#define INIT_CPU_TIMERS(cpu_timers) \
|
|
{ \
|
|
LIST_HEAD_INIT(cpu_timers[0]), \
|
|
LIST_HEAD_INIT(cpu_timers[1]), \
|
|
LIST_HEAD_INIT(cpu_timers[2]), \
|
|
}
|
|
|
|
|
|
#endif
|