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kill task_struct->thread_group

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Link: https://lkml.kernel.org/r/20230826111409.GA23243@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Oleg Nesterov 2023-08-26 13:14:09 +02:00 committed by Andrew Morton
parent e34a35ee1f
commit 8e1f385104
4 changed files with 0 additions and 6 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

1
include/linux/sched.h
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@ -1002,7 +1002,6 @@ struct task_struct {
/* PID/PID hash table linkage. */ /* PID/PID hash table linkage. */
struct pid *thread_pid; struct pid *thread_pid;
struct hlist_node pid_links[PIDTYPE_MAX]; struct hlist_node pid_links[PIDTYPE_MAX];
struct list_head thread_group;
struct list_head thread_node; struct list_head thread_node;
struct completion *vfork_done; struct completion *vfork_done;

1
init/init_task.c
View file

@ -132,7 +132,6 @@ struct task_struct init_task
.pi_lock = __RAW_SPIN_LOCK_UNLOCKED(init_task.pi_lock), .pi_lock = __RAW_SPIN_LOCK_UNLOCKED(init_task.pi_lock),
.timer_slack_ns = 50000, /* 50 usec default slack */ .timer_slack_ns = 50000, /* 50 usec default slack */
.thread_pid = &init_struct_pid, .thread_pid = &init_struct_pid,
.thread_group = LIST_HEAD_INIT(init_task.thread_group),
.thread_node = LIST_HEAD_INIT(init_signals.thread_head), .thread_node = LIST_HEAD_INIT(init_signals.thread_head),
#ifdef CONFIG_AUDIT #ifdef CONFIG_AUDIT
.loginuid = INVALID_UID, .loginuid = INVALID_UID,

1
kernel/exit.c
View file

@ -133,7 +133,6 @@ static void __unhash_process(struct task_struct *p, bool group_dead)
list_del_init(&p->sibling); list_del_init(&p->sibling);
__this_cpu_dec(process_counts); __this_cpu_dec(process_counts);
} }
list_del_rcu(&p->thread_group);
list_del_rcu(&p->thread_node); list_del_rcu(&p->thread_node);
} }

3
kernel/fork.c
View file

@ -2576,7 +2576,6 @@ __latent_entropy struct task_struct *copy_process(
p->dirty_paused_when = 0; p->dirty_paused_when = 0;
p->pdeath_signal = 0; p->pdeath_signal = 0;
INIT_LIST_HEAD(&p->thread_group);
p->task_works = NULL; p->task_works = NULL;
clear_posix_cputimers_work(p); clear_posix_cputimers_work(p);
@ -2704,8 +2703,6 @@ __latent_entropy struct task_struct *copy_process(
atomic_inc(&current->signal->live); atomic_inc(&current->signal->live);
refcount_inc(&current->signal->sigcnt); refcount_inc(&current->signal->sigcnt);
task_join_group_stop(p); task_join_group_stop(p);
list_add_tail_rcu(&p->thread_group,
&p->group_leader->thread_group);
list_add_tail_rcu(&p->thread_node, list_add_tail_rcu(&p->thread_node,
&p->signal->thread_head); &p->signal->thread_head);
} }