[PATCH v4 13/35] wait.h: move declarations to wait_types.h

[Max Kellermann <max.kellermann@ionos.com>]

By providing declarations in a lean header, we can reduce header
dependencies.

Signed-off-by: Max Kellermann <max.kellermann@ionos.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ih.h |  2 +-
 include/drm/gpu_scheduler.h            |  2 +-
 include/linux/backing-dev-defs.h       |  2 +-
 include/linux/blkdev.h                 |  2 +-
 include/linux/buffer_head.h            |  2 +-
 include/linux/ceph/libceph.h           |  2 +-
 include/linux/cgroup-defs.h            |  2 +-
 include/linux/console_struct.h         |  2 +-
 include/linux/counter.h                |  2 +-
 include/linux/dcache.h                 |  2 +-
 include/linux/dma-buf.h                |  2 +-
 include/linux/eventfd.h                |  2 +-
 include/linux/gnss.h                   |  2 +-
 include/linux/libps2.h                 |  2 +-
 include/linux/lp.h                     |  2 +-
 include/linux/mempool.h                |  2 +-
 include/linux/mhi.h                    |  2 +-
 include/linux/mmzone.h                 |  2 +-
 include/linux/net.h                    |  2 +-
 include/linux/nfs_fs_sb.h              |  2 +-
 include/linux/parport.h                |  2 +-
 include/linux/pid.h                    |  2 +-
 include/linux/pm.h                     |  2 +-
 include/linux/poll.h                   |  2 +-
 include/linux/psi_types.h              |  2 +-
 include/linux/relay.h                  |  2 +-
 include/linux/rtnetlink.h              |  2 +-
 include/linux/sbitmap.h                |  2 +-
 include/linux/sunrpc/rpc_pipe_fs.h     |  2 +-
 include/linux/syslog.h                 |  2 +-
 include/linux/tty_port.h               |  2 +-
 include/linux/wait.h                   | 23 +------------------
 include/linux/wait_bit.h               |  2 +-
 include/linux/wait_types.h             | 31 ++++++++++++++++++++++++++
 include/media/dvb_ringbuffer.h         |  2 +-
 include/net/smc.h                      |  2 +-
 include/net/sock.h                     |  2 +-
 include/scsi/libiscsi.h                |  2 +-
 include/sound/control.h                |  2 +-
 include/sound/rawmidi.h                |  2 +-
 40 files changed, 70 insertions(+), 60 deletions(-)
 create mode 100644 include/linux/wait_types.h

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.h
index 59a5bc9b1120..6e01527b2be5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.h
@@ -25,7 +25,7 @@
 #define __AMDGPU_IH_H__
 
 #include <linux/types.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 
 /* Maximum number of IVs processed at once */
 #define AMDGPU_IH_MAX_NUM_IVS	32
diff --git a/include/drm/gpu_scheduler.h b/include/drm/gpu_scheduler.h
index 4edd7ac64b62..05591cc987c2 100644
--- a/include/drm/gpu_scheduler.h
+++ b/include/drm/gpu_scheduler.h
@@ -28,7 +28,7 @@
 #include <linux/dma-fence.h>
 #include <linux/completion.h>
 #include <linux/xarray.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 #include <linux/workqueue_types.h>
 
 #define MAX_WAIT_SCHED_ENTITY_Q_EMPTY msecs_to_jiffies(1000)
diff --git a/include/linux/backing-dev-defs.h b/include/linux/backing-dev-defs.h
index 720a88bb3513..ffdd82f2f3e6 100644
--- a/include/linux/backing-dev-defs.h
+++ b/include/linux/backing-dev-defs.h
@@ -10,7 +10,7 @@
 #include <linux/percpu-refcount.h>
 #include <linux/flex_proportions.h>
 #include <linux/timer_types.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 #include <linux/workqueue_types.h>
 #include <linux/kref_types.h>
 
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 26344147adec..2a8df9c0e87b 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -13,7 +13,7 @@
 #include <linux/minmax.h>
 #include <linux/timer_types.h>
 #include <linux/workqueue_types.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 #include <linux/bio.h>
 #include <linux/gfp_types.h>
 #include <linux/kdev_t.h>
diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index d78454a4dd1f..15dffb5374fb 100644
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -13,7 +13,7 @@
 #include <linux/fs.h>
 #include <linux/linkage.h>
 #include <linux/pagemap.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 #include <linux/atomic.h>
 
 enum bh_state_bits {
diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h
index d01be9103e56..12eb9c9f6620 100644
--- a/include/linux/ceph/libceph.h
+++ b/include/linux/ceph/libceph.h
@@ -11,7 +11,7 @@
 #include <linux/fs.h>
 #include <linux/mempool.h>
 #include <linux/pagemap.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 #include <linux/writeback.h>
 #include <linux/slab.h>
 #include <linux/refcount_types.h>
diff --git a/include/linux/cgroup-defs.h b/include/linux/cgroup-defs.h
index 380a59b31624..99e24f3034df 100644
--- a/include/linux/cgroup-defs.h
+++ b/include/linux/cgroup-defs.h
@@ -11,7 +11,7 @@
 #include <linux/limits.h>
 #include <linux/list.h>
 #include <linux/idr.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 #include <linux/mutex_types.h>
 #include <linux/rcupdate.h>
 #include <linux/refcount_types.h>
diff --git a/include/linux/console_struct.h b/include/linux/console_struct.h
index a0142b93eaf9..8babdd50a4ca 100644
--- a/include/linux/console_struct.h
+++ b/include/linux/console_struct.h
@@ -13,7 +13,7 @@
 #ifndef _LINUX_CONSOLE_STRUCT_H
 #define _LINUX_CONSOLE_STRUCT_H
 
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 #include <linux/vt.h>
 #include <linux/workqueue_types.h>
 
diff --git a/include/linux/counter.h b/include/linux/counter.h
index 846b94517c5b..638ebb5b4d27 100644
--- a/include/linux/counter.h
+++ b/include/linux/counter.h
@@ -13,7 +13,7 @@
 #include <linux/mutex_types.h>
 #include <linux/spinlock_types.h>
 #include <linux/types.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 #include <uapi/linux/counter.h>
 
 struct counter_device;
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 04ab9e67046c..560ca5e16f1e 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -13,7 +13,7 @@
 #include <linux/rcupdate.h>
 #include <linux/lockref.h>
 #include <linux/stringhash.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 
 struct path;
 struct file;
diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h
index 8ff4add71f88..ab67e5a4b0ec 100644
--- a/include/linux/dma-buf.h
+++ b/include/linux/dma-buf.h
@@ -21,7 +21,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/fs.h>
 #include <linux/dma-fence.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 
 struct device;
 struct dma_buf;
diff --git a/include/linux/eventfd.h b/include/linux/eventfd.h
index 7199c5039561..5f41551db2f1 100644
--- a/include/linux/eventfd.h
+++ b/include/linux/eventfd.h
@@ -9,7 +9,7 @@
 #ifndef _LINUX_EVENTFD_H
 #define _LINUX_EVENTFD_H
 
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 #include <linux/err.h>
 #include <linux/sched.h>
 #include <uapi/linux/eventfd.h>
diff --git a/include/linux/gnss.h b/include/linux/gnss.h
index 9f38ff948d78..3c24e934b732 100644
--- a/include/linux/gnss.h
+++ b/include/linux/gnss.h
@@ -14,7 +14,7 @@
 #include <linux/mutex_types.h>
 #include <linux/rwsem_types.h>
 #include <linux/types.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 
 struct gnss_device;
 
diff --git a/include/linux/libps2.h b/include/linux/libps2.h
index 006c38667e75..c2f438730ae1 100644
--- a/include/linux/libps2.h
+++ b/include/linux/libps2.h
@@ -11,7 +11,7 @@
 #include <linux/interrupt.h>
 #include <linux/mutex_types.h>
 #include <linux/types.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 
 struct ps2dev;
 
diff --git a/include/linux/lp.h b/include/linux/lp.h
index 337573412852..d700bf3255b1 100644
--- a/include/linux/lp.h
+++ b/include/linux/lp.h
@@ -9,7 +9,7 @@
 #define _LINUX_LP_H
 
 
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 #include <linux/mutex_types.h>
 #include <uapi/linux/lp.h>
 
diff --git a/include/linux/mempool.h b/include/linux/mempool.h
index 16c5cc807ff6..d3df002ac3b7 100644
--- a/include/linux/mempool.h
+++ b/include/linux/mempool.h
@@ -5,7 +5,7 @@
 #ifndef _LINUX_MEMPOOL_H
 #define _LINUX_MEMPOOL_H
 
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 #include <linux/compiler.h>
 
 struct kmem_cache;
diff --git a/include/linux/mhi.h b/include/linux/mhi.h
index bd99f47726dc..243bfae1a94c 100644
--- a/include/linux/mhi.h
+++ b/include/linux/mhi.h
@@ -12,7 +12,7 @@
 #include <linux/skbuff.h>
 #include <linux/slab.h>
 #include <linux/spinlock_types.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 #include <linux/workqueue_types.h>
 
 #define MHI_MAX_OEM_PK_HASH_SEGMENTS 16
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index ce11c2dab2bc..fa41c34f16da 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -8,7 +8,7 @@
 #include <linux/spinlock_types.h>
 #include <linux/list.h>
 #include <linux/list_nulls.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 #include <linux/bitops.h>
 #include <linux/cache.h>
 #include <linux/threads.h>
diff --git a/include/linux/net.h b/include/linux/net.h
index c9b4a63791a4..139a936fb772 100644
--- a/include/linux/net.h
+++ b/include/linux/net.h
@@ -16,7 +16,7 @@
 
 #include <linux/stringify.h>
 #include <linux/random.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 #include <linux/fcntl.h>	/* For O_CLOEXEC and O_NONBLOCK */
 #include <linux/rcupdate.h>
 #include <linux/once.h>
diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index 08860ceda787..1c9a1e28b13e 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -5,7 +5,7 @@
 #include <linux/list.h>
 #include <linux/backing-dev.h>
 #include <linux/idr.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 #include <linux/nfs_xdr.h>
 #include <linux/sunrpc/xprt.h>
 
diff --git a/include/linux/parport.h b/include/linux/parport.h
index c8e3b71a3b49..783835d05d9b 100644
--- a/include/linux/parport.h
+++ b/include/linux/parport.h
@@ -10,7 +10,7 @@
 #include <linux/jiffies.h>
 #include <linux/proc_fs.h>
 #include <linux/spinlock_types.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 #include <linux/irqreturn.h>
 #include <linux/semaphore.h>
 #include <linux/device.h>
diff --git a/include/linux/pid.h b/include/linux/pid.h
index 8124d57752b9..fd9d9c054585 100644
--- a/include/linux/pid.h
+++ b/include/linux/pid.h
@@ -7,7 +7,7 @@
 #include <linux/rcupdate.h>
 #include <linux/refcount.h>
 #include <linux/sched.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 
 /*
  * What is struct pid?
diff --git a/include/linux/pm.h b/include/linux/pm.h
index 303a143c4e04..c1533ce86893 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -13,7 +13,7 @@
 #include <linux/list.h>
 #include <linux/workqueue_types.h>
 #include <linux/spinlock_types.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 #include <linux/hrtimer_types.h>
 #include <linux/completion.h>
 
diff --git a/include/linux/poll.h b/include/linux/poll.h
index a9e0e1c2d1f2..043aa684b09c 100644
--- a/include/linux/poll.h
+++ b/include/linux/poll.h
@@ -5,7 +5,7 @@
 
 #include <linux/compiler.h>
 #include <linux/ktime.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 #include <linux/string.h>
 #include <linux/fs.h>
 #include <linux/uaccess.h>
diff --git a/include/linux/psi_types.h b/include/linux/psi_types.h
index 8af6452b36e2..de72dcc6e0bf 100644
--- a/include/linux/psi_types.h
+++ b/include/linux/psi_types.h
@@ -5,7 +5,7 @@
 #include <linux/kthread.h>
 #include <linux/seqlock_types.h>
 #include <linux/types.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 
 #ifdef CONFIG_PSI
 
diff --git a/include/linux/relay.h b/include/linux/relay.h
index d33735edc3cb..79ecc446ed48 100644
--- a/include/linux/relay.h
+++ b/include/linux/relay.h
@@ -13,7 +13,7 @@
 
 #include <linux/types.h>
 #include <linux/sched.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 #include <linux/list.h>
 #include <linux/irq_work.h>
 #include <linux/bug.h>
diff --git a/include/linux/rtnetlink.h b/include/linux/rtnetlink.h
index d1c42219429c..4b1f01916825 100644
--- a/include/linux/rtnetlink.h
+++ b/include/linux/rtnetlink.h
@@ -3,7 +3,7 @@
 #define __LINUX_RTNETLINK_H
 
 #include <linux/netdevice.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 #include <linux/refcount.h>
 #include <uapi/linux/rtnetlink.h>
 
diff --git a/include/linux/sbitmap.h b/include/linux/sbitmap.h
index d7d3fba174f8..f7279f7632fe 100644
--- a/include/linux/sbitmap.h
+++ b/include/linux/sbitmap.h
@@ -18,7 +18,7 @@
 #include <linux/percpu.h>
 #include <linux/slab.h>
 #include <linux/types.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 
 struct seq_file;
 
diff --git a/include/linux/sunrpc/rpc_pipe_fs.h b/include/linux/sunrpc/rpc_pipe_fs.h
index c26733d8fde7..3f4d6fc0a8a3 100644
--- a/include/linux/sunrpc/rpc_pipe_fs.h
+++ b/include/linux/sunrpc/rpc_pipe_fs.h
@@ -4,7 +4,7 @@
 
 #include <linux/list.h>
 #include <linux/spinlock_types.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 
 struct rpc_pipe_dir_head {
 	struct list_head pdh_entries;
diff --git a/include/linux/syslog.h b/include/linux/syslog.h
index 955f80e34d4f..2a4c9199d718 100644
--- a/include/linux/syslog.h
+++ b/include/linux/syslog.h
@@ -8,7 +8,7 @@
 #ifndef _LINUX_SYSLOG_H
 #define _LINUX_SYSLOG_H
 
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 
 /* Close the log.  Currently a NOP. */
 #define SYSLOG_ACTION_CLOSE          0
diff --git a/include/linux/tty_port.h b/include/linux/tty_port.h
index a76a5b6a5cf2..8622638452cb 100644
--- a/include/linux/tty_port.h
+++ b/include/linux/tty_port.h
@@ -6,7 +6,7 @@
 #include <linux/kref.h>
 #include <linux/mutex_types.h>
 #include <linux/tty_buffer.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 
 struct attribute_group;
 struct tty_driver;
diff --git a/include/linux/wait.h b/include/linux/wait.h
index 8aa3372f21a0..b36000bb012c 100644
--- a/include/linux/wait.h
+++ b/include/linux/wait.h
@@ -4,17 +4,12 @@
 /*
  * Linux wait queue related types and methods
  */
-#include <linux/list.h>
+#include <linux/wait_types.h>
 #include <linux/stddef.h>
 #include <linux/spinlock.h>
 
 #include <asm/current.h>
 
-typedef struct wait_queue_entry wait_queue_entry_t;
-
-typedef int (*wait_queue_func_t)(struct wait_queue_entry *wq_entry, unsigned mode, int flags, void *key);
-int default_wake_function(struct wait_queue_entry *wq_entry, unsigned mode, int flags, void *key);
-
 /* wait_queue_entry::flags */
 #define WQ_FLAG_EXCLUSIVE	0x01
 #define WQ_FLAG_WOKEN		0x02
@@ -22,22 +17,6 @@ int default_wake_function(struct wait_queue_entry *wq_entry, unsigned mode, int
 #define WQ_FLAG_DONE		0x08
 #define WQ_FLAG_PRIORITY	0x10
 
-/*
- * A single wait-queue entry structure:
- */
-struct wait_queue_entry {
-	unsigned int		flags;
-	void			*private;
-	wait_queue_func_t	func;
-	struct list_head	entry;
-};
-
-struct wait_queue_head {
-	spinlock_t		lock;
-	struct list_head	head;
-};
-typedef struct wait_queue_head wait_queue_head_t;
-
 struct task_struct;
 
 /*
diff --git a/include/linux/wait_bit.h b/include/linux/wait_bit.h
index 96c90fbcf652..514f68eff79d 100644
--- a/include/linux/wait_bit.h
+++ b/include/linux/wait_bit.h
@@ -8,7 +8,7 @@
 #include <linux/bitops.h>
 #include <linux/init.h> // for __init
 #include <linux/kernel.h> // for might_sleep()
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 
 struct wait_bit_key {
 	void			*flags;
diff --git a/include/linux/wait_types.h b/include/linux/wait_types.h
new file mode 100644
index 000000000000..4b43e7bc6dac
--- /dev/null
+++ b/include/linux/wait_types.h
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_WAIT_TYPES_H
+#define _LINUX_WAIT_TYPES_H
+/*
+ * Linux wait queue related types and methods
+ */
+#include <linux/list.h>
+#include <linux/spinlock_types.h>
+
+typedef struct wait_queue_entry wait_queue_entry_t;
+
+typedef int (*wait_queue_func_t)(struct wait_queue_entry *wq_entry, unsigned mode, int flags, void *key);
+int default_wake_function(struct wait_queue_entry *wq_entry, unsigned mode, int flags, void *key);
+
+/*
+ * A single wait-queue entry structure:
+ */
+struct wait_queue_entry {
+	unsigned int		flags;
+	void			*private;
+	wait_queue_func_t	func;
+	struct list_head	entry;
+};
+
+struct wait_queue_head {
+	spinlock_t		lock;
+	struct list_head	head;
+};
+typedef struct wait_queue_head wait_queue_head_t;
+
+#endif /* _LINUX_WAIT_TYPES_H */
diff --git a/include/media/dvb_ringbuffer.h b/include/media/dvb_ringbuffer.h
index 131997d1f131..22da81bff624 100644
--- a/include/media/dvb_ringbuffer.h
+++ b/include/media/dvb_ringbuffer.h
@@ -24,7 +24,7 @@
 #define _DVB_RINGBUFFER_H_
 
 #include <linux/spinlock_types.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 
 /**
  * struct dvb_ringbuffer - Describes a ring buffer used at DVB framework
diff --git a/include/net/smc.h b/include/net/smc.h
index 44a01bd3da10..92611a9cf0e9 100644
--- a/include/net/smc.h
+++ b/include/net/smc.h
@@ -13,7 +13,7 @@
 
 #include <linux/spinlock_types.h>
 #include <linux/types.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 #include "linux/ism.h"
 
 struct device;
diff --git a/include/net/sock.h b/include/net/sock.h
index bebdc45cf622..008a6c5a3bfc 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -53,7 +53,7 @@
 #include <linux/memcontrol.h>
 #include <linux/static_key.h>
 #include <linux/sched.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 #include <linux/cgroup-defs.h>
 #include <linux/rbtree_types.h>
 #include <linux/rculist_nulls.h>
diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h
index 01f13729ad24..d30e65c5f137 100644
--- a/include/scsi/libiscsi.h
+++ b/include/scsi/libiscsi.h
@@ -11,7 +11,7 @@
 #define LIBISCSI_H
 
 #include <linux/types.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 #include <linux/mutex_types.h>
 #include <linux/timer_types.h>
 #include <linux/workqueue_types.h>
diff --git a/include/sound/control.h b/include/sound/control.h
index 9a4f4f7138da..b921cdb94082 100644
--- a/include/sound/control.h
+++ b/include/sound/control.h
@@ -7,7 +7,7 @@
  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
  */
 
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 #include <linux/nospec.h>
 #include <sound/asound.h>
 
diff --git a/include/sound/rawmidi.h b/include/sound/rawmidi.h
index 46678a38dbb9..6c380196bff4 100644
--- a/include/sound/rawmidi.h
+++ b/include/sound/rawmidi.h
@@ -10,7 +10,7 @@
 #include <sound/asound.h>
 #include <linux/interrupt.h>
 #include <linux/spinlock_types.h>
-#include <linux/wait.h>
+#include <linux/wait_types.h>
 #include <linux/mutex_types.h>
 #include <linux/workqueue_types.h>
 #include <linux/device.h>
-- 
2.39.2