irqwork: Move data struct to a types header

... to avoid header recursion hell.

Signed-off-by: Thomas Gleixner <[e-mail]>
Signed-off-by: Peter Zijlstra (Intel) <[e-mail]>
Signed-off-by: Thomas Gleixner <[e-mail]>
Reviewed-by: Mathieu Desnoyers <[e-mail]>
Link: https://patch.msgid.link/[e-mail]

include/linux/irq_work.h

···
 #ifndef _LINUX_IRQ_WORK_H
 #define _LINUX_IRQ_WORK_H
 
-#include <linux/smp_types.h>
+#include <linux/irq_work_types.h>
 #include <linux/rcuwait.h>
+#include <linux/smp_types.h>
 
 /*
  * An entry can be in one of four states:
···
  * pending   next, 3 -> {busy}          : queued, pending callback
  * busy      NULL, 2 -> {free, claimed} : callback in progress, can be claimed
  */
-
-struct irq_work {
-	struct __call_single_node node;
-	void (*func)(struct irq_work *);
-	struct rcuwait irqwait;
-};
 
 #define __IRQ_WORK_INIT(_func, _flags) (struct irq_work){	\
 	.node = { .u_flags = (_flags), },			\

include/linux/irq_work_types.h

···
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_IRQ_WORK_TYPES_H
+#define _LINUX_IRQ_WORK_TYPES_H
+
+#include <linux/smp_types.h>
+#include <linux/types.h>
+
+struct irq_work {
+	struct __call_single_node	node;
+	void				(*func)(struct irq_work *);
+	struct rcuwait			irqwait;
+};
+
+#endif