This series massages asm/param.h to simpler and more uniform shape.

By the end of it,
 	* all arch/*/include/uapi/asm/param.h are either generated includes
 of <asm-generic/param.h> or a #define or two followed by such include.
 	* no arch/*/include/asm/param.h anywhere, generated or not.
 	* include <asm/param.h> resolves to arch/*/include/uapi/asm/param.h
 of the architecture in question (or that of host in case of uml).
 	* include/asm-generic/param.h pulls uapi/asm-generic/param.h and
 deals with USER_HZ, CLOCKS_PER_SEC and with HZ redefinition after that.
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Merge tag 'pull-headers_param' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull asm/param cleanup from Al Viro:
 "This massages asm/param.h to simpler and more uniform shape:

   - all arch/*/include/uapi/asm/param.h are either generated includes
     of <asm-generic/param.h> or a #define or two followed by such
     include

   - no arch/*/include/asm/param.h anywhere, generated or not

   - include <asm/param.h> resolves to arch/*/include/uapi/asm/param.h
     of the architecture in question (or that of host in case of uml)

   - include/asm-generic/param.h pulls uapi/asm-generic/param.h and
     deals with USER_HZ, CLOCKS_PER_SEC and with HZ redefinition after
     that"

* tag 'pull-headers_param' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  loongarch, um, xtensa: get rid of generated arch/$ARCH/include/asm/param.h
  alpha: regularize the situation with asm/param.h
  xtensa: get rid uapi/asm/param.h

arch/alpha/include/asm/param.h

@@ -1,12 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_ALPHA_PARAM_H
-#define _ASM_ALPHA_PARAM_H
-
-#include <uapi/asm/param.h>
-
-# undef HZ
-# define HZ		CONFIG_HZ
-# define USER_HZ	1024
-# define CLOCKS_PER_SEC	USER_HZ	/* frequency at which times() counts */
-
-#endif /* _ASM_ALPHA_PARAM_H */

arch/alpha/include/uapi/asm/param.h

@@ -2,14 +2,9 @@
 #ifndef _UAPI_ASM_ALPHA_PARAM_H
 #define _UAPI_ASM_ALPHA_PARAM_H
 
-#define HZ		1024
-
+#define __USER_HZ	1024
 #define EXEC_PAGESIZE	8192
 
-#ifndef NOGROUP
-#define NOGROUP		(-1)
-#endif
-
-#define MAXHOSTNAMELEN	64	/* max length of hostname */
+#include <asm-generic/param.h>
 
 #endif /* _UAPI_ASM_ALPHA_PARAM_H */

arch/loongarch/include/asm/Kbuild

@@ -10,5 +10,4 @@ generic-y += user.h
 generic-y += ioctl.h
 generic-y += mmzone.h
 generic-y += statfs.h
-generic-y += param.h
 generic-y += text-patching.h

arch/um/include/asm/Kbuild

@@ -15,7 +15,6 @@ generic-y += mcs_spinlock.h
 generic-y += mmiowb.h
 generic-y += module.h
 generic-y += module.lds.h
-generic-y += param.h
 generic-y += parport.h
 generic-y += percpu.h
 generic-y += preempt.h

arch/xtensa/include/asm/Kbuild

@@ -3,7 +3,6 @@ generated-y += syscall_table.h
 generic-y += extable.h
 generic-y += kvm_para.h
 generic-y += mcs_spinlock.h
-generic-y += param.h
 generic-y += parport.h
 generic-y += qrwlock.h
 generic-y += qspinlock.h

arch/xtensa/include/uapi/asm/param.h

@@ -1,31 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-/*
- * include/asm-xtensa/param.h
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2001 - 2005 Tensilica Inc.
- */
-
-#ifndef _UAPI_XTENSA_PARAM_H
-#define _UAPI_XTENSA_PARAM_H
-
-#ifndef __KERNEL__
-# define HZ		100
-#endif
-
-#define EXEC_PAGESIZE	4096
-
-#ifndef NGROUPS
-#define NGROUPS		32
-#endif
-
-#ifndef NOGROUP
-#define NOGROUP		(-1)
-#endif
-
-#define MAXHOSTNAMELEN	64	/* max length of hostname */
-
-#endif /* _UAPI_XTENSA_PARAM_H */

include/asm-generic/param.h

@@ -6,6 +6,6 @@
 
 # undef HZ
 # define HZ		CONFIG_HZ	/* Internal kernel timer frequency */
-# define USER_HZ	100		/* some user interfaces are */
+# define USER_HZ	__USER_HZ	/* some user interfaces are */
 # define CLOCKS_PER_SEC	(USER_HZ)       /* in "ticks" like times() */
 #endif /* __ASM_GENERIC_PARAM_H */

include/uapi/asm-generic/param.h

@@ -2,8 +2,12 @@
 #ifndef _UAPI__ASM_GENERIC_PARAM_H
 #define _UAPI__ASM_GENERIC_PARAM_H
 
+#ifndef __USER_HZ
+#define __USER_HZ	100
+#endif
+
 #ifndef HZ
-#define HZ 100
+#define HZ __USER_HZ
 #endif
 
 #ifndef EXEC_PAGESIZE