b2be05273a
WARN() is used in some places to report firmware or hardware bugs that are then worked-around. These bugs do not affect the stability of the kernel and should not set the flag for TAINT_WARN. To allow for this, add WARN_TAINT() and WARN_TAINT_ONCE() macros that take a taint number as argument. Architectures that implement warnings using trap instructions instead of calls to warn_slowpath_*() now implement __WARN_TAINT(taint) instead of __WARN(). Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Acked-by: Helge Deller <deller@gmx.de> Tested-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
71 lines
1.4 KiB
C
71 lines
1.4 KiB
C
#ifndef _ASM_S390_BUG_H
|
|
#define _ASM_S390_BUG_H
|
|
|
|
#include <linux/kernel.h>
|
|
|
|
#ifdef CONFIG_BUG
|
|
|
|
#ifdef CONFIG_DEBUG_BUGVERBOSE
|
|
|
|
#define __EMIT_BUG(x) do { \
|
|
asm volatile( \
|
|
"0: j 0b+2\n" \
|
|
"1:\n" \
|
|
".section .rodata.str,\"aMS\",@progbits,1\n" \
|
|
"2: .asciz \""__FILE__"\"\n" \
|
|
".previous\n" \
|
|
".section __bug_table,\"a\"\n" \
|
|
"3: .long 1b-3b,2b-3b\n" \
|
|
" .short %0,%1\n" \
|
|
" .org 3b+%2\n" \
|
|
".previous\n" \
|
|
: : "i" (__LINE__), \
|
|
"i" (x), \
|
|
"i" (sizeof(struct bug_entry))); \
|
|
} while (0)
|
|
|
|
#else /* CONFIG_DEBUG_BUGVERBOSE */
|
|
|
|
#define __EMIT_BUG(x) do { \
|
|
asm volatile( \
|
|
"0: j 0b+2\n" \
|
|
"1:\n" \
|
|
".section __bug_table,\"a\"\n" \
|
|
"2: .long 1b-2b\n" \
|
|
" .short %0\n" \
|
|
" .org 2b+%1\n" \
|
|
".previous\n" \
|
|
: : "i" (x), \
|
|
"i" (sizeof(struct bug_entry))); \
|
|
} while (0)
|
|
|
|
#endif /* CONFIG_DEBUG_BUGVERBOSE */
|
|
|
|
#define BUG() do { \
|
|
__EMIT_BUG(0); \
|
|
unreachable(); \
|
|
} while (0)
|
|
|
|
#define __WARN_TAINT(taint) do { \
|
|
__EMIT_BUG(BUGFLAG_TAINT(taint)); \
|
|
} while (0)
|
|
|
|
#define WARN_ON(x) ({ \
|
|
int __ret_warn_on = !!(x); \
|
|
if (__builtin_constant_p(__ret_warn_on)) { \
|
|
if (__ret_warn_on) \
|
|
__WARN(); \
|
|
} else { \
|
|
if (unlikely(__ret_warn_on)) \
|
|
__WARN(); \
|
|
} \
|
|
unlikely(__ret_warn_on); \
|
|
})
|
|
|
|
#define HAVE_ARCH_BUG
|
|
#define HAVE_ARCH_WARN_ON
|
|
#endif /* CONFIG_BUG */
|
|
|
|
#include <asm-generic/bug.h>
|
|
|
|
#endif /* _ASM_S390_BUG_H */
|