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2c4704756c
To access these fields the code always has to go to group leader so going to signal struct is no loss and is actually a fundamental simplification. This saves a little bit of memory by only allocating the pid pointer array once instead of once for every thread, and even better this removes a few potential races caused by the fact that group_leader can be changed by de_thread, while signal_struct can not. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX__INIT_TASK_H
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#define _LINUX__INIT_TASK_H
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#include <linux/rcupdate.h>
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#include <linux/irqflags.h>
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#include <linux/utsname.h>
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#include <linux/lockdep.h>
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#include <linux/ftrace.h>
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#include <linux/ipc.h>
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#include <linux/pid_namespace.h>
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#include <linux/user_namespace.h>
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#include <linux/securebits.h>
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#include <linux/seqlock.h>
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#include <linux/rbtree.h>
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#include <linux/sched/autogroup.h>
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#include <net/net_namespace.h>
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#include <linux/sched/rt.h>
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#include <linux/livepatch.h>
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#include <linux/mm_types.h>
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#include <asm/thread_info.h>
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extern struct files_struct init_files;
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extern struct fs_struct init_fs;
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extern struct nsproxy init_nsproxy;
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extern struct group_info init_groups;
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extern struct cred init_cred;
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#ifndef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
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#define INIT_PREV_CPUTIME(x) .prev_cputime = { \
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.lock = __RAW_SPIN_LOCK_UNLOCKED(x.prev_cputime.lock), \
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},
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#else
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#define INIT_PREV_CPUTIME(x)
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#endif
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#ifdef CONFIG_POSIX_TIMERS
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#define INIT_CPU_TIMERS(s) \
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.cpu_timers = { \
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LIST_HEAD_INIT(s.cpu_timers[0]), \
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LIST_HEAD_INIT(s.cpu_timers[1]), \
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LIST_HEAD_INIT(s.cpu_timers[2]), \
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},
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#else
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#define INIT_CPU_TIMERS(s)
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#endif
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#define INIT_TASK_COMM "swapper"
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/* Attach to the init_task data structure for proper alignment */
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#ifdef CONFIG_ARCH_TASK_STRUCT_ON_STACK
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#define __init_task_data __attribute__((__section__(".data..init_task")))
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#else
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#define __init_task_data /**/
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#endif
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/* Attach to the thread_info data structure for proper alignment */
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#define __init_thread_info __attribute__((__section__(".data..init_thread_info")))
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#endif
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