/* SPDX-License-Identifier: GPL-2.0-or-later */
  #ifndef __LINUX_KMOD_H__
  #define __LINUX_KMOD_H__
  
  /*
   *	include/linux/kmod.h
   */
  
  #include <linux/umh.h>
  #include <linux/gfp.h>
  #include <linux/stddef.h>
  #include <linux/errno.h>
  #include <linux/compiler.h>
  #include <linux/workqueue.h>
  #include <linux/sysctl.h>
  
  #define KMOD_PATH_LEN 256
  
  #ifdef CONFIG_MODULES
  extern char modprobe_path[]; /* for sysctl */
  /* modprobe exit status on success, -ve on error.  Return value
   * usually useless though. */
  extern __printf(2, 3)
  int __request_module(bool wait, const char *name, ...);
  #define request_module(mod...) __request_module(true, mod)
  #define request_module_nowait(mod...) __request_module(false, mod)
  #define try_then_request_module(x, mod...) \
  	((x) ?: (__request_module(true, mod), (x)))
  #else
  static inline int request_module(const char *name, ...) { return -ENOSYS; }
  static inline int request_module_nowait(const char *name, ...) { return -ENOSYS; }
  #define try_then_request_module(x, mod...) (x)
  #endif
  
  #endif /* __LINUX_KMOD_H__ */