c31a0bf3e1
This makes x86-64 use the generic BUG machinery. The main advantage in using the generic BUG machinery for x86-64 is that the inlined overhead of BUG is just the ud2a instruction; the file+line information are no longer inlined into the instruction stream. This reduces cache pollution. Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Andi Kleen <ak@muc.de> Cc: Hugh Dickens <hugh@veritas.com> Cc: Michael Ellerman <michael@ellerman.id.au> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
34 lines
725 B
C
34 lines
725 B
C
#ifndef __ASM_X8664_BUG_H
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#define __ASM_X8664_BUG_H 1
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#ifdef CONFIG_BUG
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#define HAVE_ARCH_BUG
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#ifdef CONFIG_DEBUG_BUGVERBOSE
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#define BUG() \
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do { \
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asm volatile("1:\tud2\n" \
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".pushsection __bug_table,\"a\"\n" \
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"2:\t.quad 1b, %c0\n" \
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"\t.word %c1, 0\n" \
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"\t.org 2b+%c2\n" \
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".popsection" \
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: : "i" (__FILE__), "i" (__LINE__), \
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"i" (sizeof(struct bug_entry))); \
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for(;;) ; \
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} while(0)
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#else
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#define BUG() \
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do { \
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asm volatile("ud2"); \
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for(;;) ; \
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} while(0)
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#endif
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void out_of_line_bug(void);
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#else
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static inline void out_of_line_bug(void) { }
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#endif
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#include <asm-generic/bug.h>
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#endif
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