From 6778948f9de86c3cfaf36725a7c87dcff9ba247f Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 08:20:59 +0000
Subject: [PATCH] kernel_5.10 no rt
---
kernel/include/linux/pid.h | 25 ++++++++++++++++++++-----
1 files changed, 20 insertions(+), 5 deletions(-)
diff --git a/kernel/include/linux/pid.h b/kernel/include/linux/pid.h
index a85b65f..fa10acb 100644
--- a/kernel/include/linux/pid.h
+++ b/kernel/include/linux/pid.h
@@ -4,7 +4,7 @@
#include <linux/rculist.h>
#include <linux/wait.h>
-#include <linux/atomic.h>
+#include <linux/refcount.h>
enum pid_type
{
@@ -58,10 +58,12 @@
struct pid
{
- atomic_t count;
+ refcount_t count;
unsigned int level;
+ spinlock_t lock;
/* lists of tasks that use this pid */
struct hlist_head tasks[PIDTYPE_MAX];
+ struct hlist_head inodes;
/* wait queue for pidfd notifications */
wait_queue_head_t wait_pidfd;
struct rcu_head rcu;
@@ -72,15 +74,24 @@
extern const struct file_operations pidfd_fops;
+struct file;
+
+extern struct pid *pidfd_pid(const struct file *file);
+struct pid *pidfd_get_pid(unsigned int fd, unsigned int *flags);
+
static inline struct pid *get_pid(struct pid *pid)
{
if (pid)
- atomic_inc(&pid->count);
+ refcount_inc(&pid->count);
return pid;
}
extern void put_pid(struct pid *pid);
extern struct task_struct *pid_task(struct pid *pid, enum pid_type);
+static inline bool pid_has_task(struct pid *pid, enum pid_type type)
+{
+ return !hlist_empty(&pid->tasks[type]);
+}
extern struct task_struct *get_pid_task(struct pid *pid, enum pid_type);
extern struct pid *get_task_pid(struct task_struct *task, enum pid_type type);
@@ -92,11 +103,15 @@
extern void detach_pid(struct task_struct *task, enum pid_type);
extern void change_pid(struct task_struct *task, enum pid_type,
struct pid *pid);
+extern void exchange_tids(struct task_struct *task, struct task_struct *old);
extern void transfer_pid(struct task_struct *old, struct task_struct *new,
enum pid_type);
struct pid_namespace;
extern struct pid_namespace init_pid_ns;
+
+extern int pid_max;
+extern int pid_max_min, pid_max_max;
/*
* look up a PID in the hash table. Must be called with the tasklist_lock
@@ -115,9 +130,9 @@
*/
extern struct pid *find_get_pid(int nr);
extern struct pid *find_ge_pid(int nr, struct pid_namespace *);
-int next_pidmap(struct pid_namespace *pid_ns, unsigned int last);
-extern struct pid *alloc_pid(struct pid_namespace *ns);
+extern struct pid *alloc_pid(struct pid_namespace *ns, pid_t *set_tid,
+ size_t set_tid_size);
extern void free_pid(struct pid *pid);
extern void disable_pid_allocation(struct pid_namespace *ns);
--
Gitblit v1.6.2