[PATCH 22/50] pid: Split out pid_types.h

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Trimming down sched.h dependencies: we dont't want to include more than
the base types.

Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxxxxxx>
Cc: Will Drewry <wad@xxxxxxxxxxxx>
Signed-off-by: Kent Overstreet <kent.overstreet@xxxxxxxxx>
---
 drivers/target/target_core_xcopy.c |  1 +
 include/linux/pid.h                | 15 ++-------------
 include/linux/pid_types.h          | 16 ++++++++++++++++
 include/linux/sched.h              |  2 +-
 include/linux/seccomp.h            |  2 ++
 5 files changed, 22 insertions(+), 14 deletions(-)
 create mode 100644 include/linux/pid_types.h

diff --git a/drivers/target/target_core_xcopy.c b/drivers/target/target_core_xcopy.c
index 91ed015b588c..4128631c9dfd 100644
--- a/drivers/target/target_core_xcopy.c
+++ b/drivers/target/target_core_xcopy.c
@@ -15,6 +15,7 @@
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/list.h>
+#include <linux/rculist.h>
 #include <linux/configfs.h>
 #include <linux/ratelimit.h>
 #include <scsi/scsi_proto.h>
diff --git a/include/linux/pid.h b/include/linux/pid.h
index 653a527574c4..f254c3a45b9b 100644
--- a/include/linux/pid.h
+++ b/include/linux/pid.h
@@ -2,18 +2,10 @@
 #ifndef _LINUX_PID_H
 #define _LINUX_PID_H
 
+#include <linux/pid_types.h>
 #include <linux/rculist.h>
-#include <linux/wait.h>
 #include <linux/refcount.h>
-
-enum pid_type
-{
-	PIDTYPE_PID,
-	PIDTYPE_TGID,
-	PIDTYPE_PGID,
-	PIDTYPE_SID,
-	PIDTYPE_MAX,
-};
+#include <linux/wait.h>
 
 /*
  * What is struct pid?
@@ -110,9 +102,6 @@ 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;
 
diff --git a/include/linux/pid_types.h b/include/linux/pid_types.h
new file mode 100644
index 000000000000..c2aee1d91dcf
--- /dev/null
+++ b/include/linux/pid_types.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_PID_TYPES_H
+#define _LINUX_PID_TYPES_H
+
+enum pid_type {
+	PIDTYPE_PID,
+	PIDTYPE_TGID,
+	PIDTYPE_PGID,
+	PIDTYPE_SID,
+	PIDTYPE_MAX,
+};
+
+struct pid_namespace;
+extern struct pid_namespace init_pid_ns;
+
+#endif /* _LINUX_PID_TYPES_H */
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 436f7ce1450a..37cc9d257073 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -11,7 +11,7 @@
 
 #include <asm/current.h>
 
-#include <linux/pid.h>
+#include <linux/pid_types.h>
 #include <linux/sem.h>
 #include <linux/shm.h>
 #include <linux/kmsan_types.h>
diff --git a/include/linux/seccomp.h b/include/linux/seccomp.h
index 175079552f68..1ec0d8dc4b69 100644
--- a/include/linux/seccomp.h
+++ b/include/linux/seccomp.h
@@ -126,6 +126,8 @@ static inline long seccomp_get_metadata(struct task_struct *task,
 
 #ifdef CONFIG_SECCOMP_CACHE_DEBUG
 struct seq_file;
+struct pid_namespace;
+struct pid;
 
 int proc_pid_seccomp_cache(struct seq_file *m, struct pid_namespace *ns,
 			   struct pid *pid, struct task_struct *task);
-- 
2.43.0





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