b4a461e72b
As it stands if you include printk.h by itself it will fail to compile because it requires definitions from ratelimit.h. However, simply including ratelimit.h from printk.h does not work due to inclusion loops involving sched.h and kernel.h. This patch solves this by moving bits from ratelimit.h into a new header file which can then be included by printk.h without any worries about header loops. The build bot then revealed some intriguing failures arising out of this patch. On s390 there is an inclusion loop with asm/bug.h and linux/kernel.h that triggers a compile failure, because kernel.h will cause asm-generic/bug.h to be included before s390's own asm/bug.h has finished processing. This has been fixed by not including kernel.h in arch/s390/include/asm/bug.h. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Acked-by: Petr Mladek <pmladek@suse.com> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Link: https://lore.kernel.org/r/20200721062248.GA18383@gondor.apana.org.au
71 lines
1.5 KiB
C
71 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_S390_BUG_H
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#define _ASM_S390_BUG_H
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#include <linux/compiler.h>
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#ifdef CONFIG_BUG
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#ifdef CONFIG_DEBUG_BUGVERBOSE
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#define __EMIT_BUG(x) do { \
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asm_inline volatile( \
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"0: mc 0,0\n" \
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".section .rodata.str,\"aMS\",@progbits,1\n" \
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"1: .asciz \""__FILE__"\"\n" \
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".previous\n" \
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".section __bug_table,\"awM\",@progbits,%2\n" \
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"2: .long 0b-2b,1b-2b\n" \
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" .short %0,%1\n" \
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" .org 2b+%2\n" \
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".previous\n" \
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: : "i" (__LINE__), \
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"i" (x), \
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"i" (sizeof(struct bug_entry))); \
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} while (0)
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#else /* CONFIG_DEBUG_BUGVERBOSE */
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#define __EMIT_BUG(x) do { \
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asm_inline volatile( \
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"0: mc 0,0\n" \
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".section __bug_table,\"awM\",@progbits,%1\n" \
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"1: .long 0b-1b\n" \
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" .short %0\n" \
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" .org 1b+%1\n" \
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".previous\n" \
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: : "i" (x), \
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"i" (sizeof(struct bug_entry))); \
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} while (0)
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#endif /* CONFIG_DEBUG_BUGVERBOSE */
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#define BUG() do { \
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__EMIT_BUG(0); \
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unreachable(); \
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} while (0)
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#define __WARN_FLAGS(flags) do { \
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__EMIT_BUG(BUGFLAG_WARNING|(flags)); \
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} while (0)
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#define WARN_ON(x) ({ \
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int __ret_warn_on = !!(x); \
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if (__builtin_constant_p(__ret_warn_on)) { \
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if (__ret_warn_on) \
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__WARN(); \
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} else { \
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if (unlikely(__ret_warn_on)) \
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__WARN(); \
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} \
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unlikely(__ret_warn_on); \
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})
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#define HAVE_ARCH_BUG
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#define HAVE_ARCH_WARN_ON
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#endif /* CONFIG_BUG */
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#include <asm-generic/bug.h>
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#endif /* _ASM_S390_BUG_H */
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