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| author | Al Viro <viro@zeniv.linux.org.uk> | 2024-12-01 19:28:34 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2025-06-24 22:02:05 -0400 |
| commit | f65bbf05392b44714ccdcc4b5b1bebfd471d2665 (patch) | |
| tree | 9b4a2ee494b0c92ba886d6626ed236cf53283cc1 | |
| parent | xtensa: get rid uapi/asm/param.h (diff) | |
| download | linux-f65bbf05392b44714ccdcc4b5b1bebfd471d2665.tar.gz linux-f65bbf05392b44714ccdcc4b5b1bebfd471d2665.zip | |
alpha: regularize the situation with asm/param.h
The only reason why alpha can't do what sparc et.al. are doing
is that include/asm-generic/param.h relies upon the value of HZ
set for userland header in uapi/asm/param.h being 100.
We need that value to define USER_HZ and we need that definition
to outlive the redefinition of HZ kernel-side. And alpha needs
it to be 1024, not 100 like everybody else.
So let's add __USER_HZ to uapi/asm-generic/param.h, defaulting to
100 and used to define HZ. That way include/asm-generic/param.h
can use that thing instead of open-coding it - it won't be affected
by undefining and redefining HZ.
That done, alpha asm/param.h can be removed and uapi/asm/param.h
switched to defining __USER_HZ and EXEC_PAGESIZE and then including
<asm-generic/param.h> - asm/param.h will resolve to uapi/asm/param.h,
which pulls <asm-generic/param.h>, which will do the right thing
both in the kernel and userland contexts.
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | arch/alpha/include/asm/param.h | 12 | ||||
| -rw-r--r-- | arch/alpha/include/uapi/asm/param.h | 9 | ||||
| -rw-r--r-- | include/asm-generic/param.h | 2 | ||||
| -rw-r--r-- | include/uapi/asm-generic/param.h | 6 |
4 files changed, 8 insertions, 21 deletions
diff --git a/arch/alpha/include/asm/param.h b/arch/alpha/include/asm/param.h deleted file mode 100644 index cfe947ce9461..000000000000 --- a/arch/alpha/include/asm/param.h +++ /dev/null @@ -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 */ diff --git a/arch/alpha/include/uapi/asm/param.h b/arch/alpha/include/uapi/asm/param.h index 49c7119934e2..e4e410f9bf85 100644 --- a/arch/alpha/include/uapi/asm/param.h +++ b/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 */ diff --git a/include/asm-generic/param.h b/include/asm-generic/param.h index 8d3009dd28ff..8348c116aa3b 100644 --- a/include/asm-generic/param.h +++ b/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 */ diff --git a/include/uapi/asm-generic/param.h b/include/uapi/asm-generic/param.h index baad02ea7f93..3ed505dfea13 100644 --- a/include/uapi/asm-generic/param.h +++ b/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 |