mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-28 20:37:27 +00:00
9429ec96c2
The userspace part of UML uses the asm-offsets.h generator mechanism to
create definitions for UM_KERN_<LEVEL> that match the in-kernel
KERN_<LEVEL> constant definitions.
As of commit 04d2c8c83d ("printk: convert
the format for KERN_<LEVEL> to a 2 byte pattern"), KERN_<LEVEL> is no
longer expanded to the literal '"<LEVEL>"', but to '"\001" "LEVEL"', i.e.
it contains two parts.
However, the combo of DEFINE_STR() in
arch/x86/um/shared/sysdep/kernel-offsets.h and sed-y in Kbuild doesn't
support string literals consisting of multiple parts. Hence for all
UM_KERN_<LEVEL> definitions, only the SOH character is retained in the actual
definition, while the remainder ends up in the comment. E.g. in
include/generated/asm-offsets.h we get
#define UM_KERN_INFO "\001" /* "6" KERN_INFO */
instead of
#define UM_KERN_INFO "\001" "6" /* KERN_INFO */
This causes spurious '^A' output in some kernel messages:
Calibrating delay loop... 4640.76 BogoMIPS (lpj=23203840)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 256
^AChecking that host ptys support output SIGIO...Yes
^AChecking that host ptys support SIGIO on close...No, enabling workaround
^AUsing 2.6 host AIO
NET: Registered protocol family 16
bio: create slab <bio-0> at 0
Switching to clocksource itimer
To fix this:
- Move the mapping from UM_KERN_<LEVEL> to KERN_<LEVEL> from
arch/um/include/shared/common-offsets.h to
arch/um/include/shared/user.h, which is preincluded for all userspace
parts,
- Preinclude include/linux/kern_levels.h for all userspace parts, to
obtain the in-kernel KERN_<LEVEL> constant definitions. This doesn't
violate the kernel/userspace separation, as include/linux/kern_levels.h
is self-contained and doesn't expose any other kernel internals.
- Remove the now unused STR() and DEFINE_STR() macros.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
/*
|
|
* Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
|
|
* Licensed under the GPL
|
|
*/
|
|
|
|
#ifndef __USER_H__
|
|
#define __USER_H__
|
|
|
|
#include <generated/asm-offsets.h>
|
|
|
|
/*
|
|
* The usual definition - copied here because the kernel provides its own,
|
|
* fancier, type-safe, definition. Using that one would require
|
|
* copying too much infrastructure for my taste, so userspace files
|
|
* get less checking than kernel files.
|
|
*/
|
|
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
|
|
|
|
/* This is to get size_t */
|
|
#ifdef __KERNEL__
|
|
#include <linux/types.h>
|
|
#else
|
|
#include <stddef.h>
|
|
#endif
|
|
|
|
extern void panic(const char *fmt, ...)
|
|
__attribute__ ((format (printf, 1, 2)));
|
|
|
|
/* Requires preincluding include/linux/kern_levels.h */
|
|
#define UM_KERN_EMERG KERN_EMERG
|
|
#define UM_KERN_ALERT KERN_ALERT
|
|
#define UM_KERN_CRIT KERN_CRIT
|
|
#define UM_KERN_ERR KERN_ERR
|
|
#define UM_KERN_WARNING KERN_WARNING
|
|
#define UM_KERN_NOTICE KERN_NOTICE
|
|
#define UM_KERN_INFO KERN_INFO
|
|
#define UM_KERN_DEBUG KERN_DEBUG
|
|
#define UM_KERN_CONT KERN_CONT
|
|
|
|
#ifdef UML_CONFIG_PRINTK
|
|
extern int printk(const char *fmt, ...)
|
|
__attribute__ ((format (printf, 1, 2)));
|
|
#else
|
|
static inline int printk(const char *fmt, ...)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
extern int in_aton(char *str);
|
|
extern size_t strlcpy(char *, const char *, size_t);
|
|
extern size_t strlcat(char *, const char *, size_t);
|
|
|
|
/* Copied from linux/compiler-gcc.h since we can't include it directly */
|
|
#define barrier() __asm__ __volatile__("": : :"memory")
|
|
|
|
#endif
|