forked from Minki/linux
efc557570d
xfs_fs_vcmn_err can be called under a spinlock, but does a sleeping memory allocation to create buffer for it's internal sprintf. Fortunately it's the only caller of icmn_err, so we can merge the two and have one single static buffer and spinlock protecting it. While we're at it make sure we proper __attribute__ format annotations so that the compiler can detect mismatched format strings. Reported-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
73 lines
2.2 KiB
C
73 lines
2.2 KiB
C
/*
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* Copyright (c) 2000-2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __XFS_SUPPORT_DEBUG_H__
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#define __XFS_SUPPORT_DEBUG_H__
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#include <stdarg.h>
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#define CE_DEBUG 7 /* debug */
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#define CE_CONT 6 /* continuation */
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#define CE_NOTE 5 /* notice */
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#define CE_WARN 4 /* warning */
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#define CE_ALERT 1 /* alert */
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#define CE_PANIC 0 /* panic */
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extern void cmn_err(int, char *, ...)
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__attribute__ ((format (printf, 2, 3)));
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extern void assfail(char *expr, char *f, int l);
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#define ASSERT_ALWAYS(expr) \
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(unlikely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__))
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#ifndef DEBUG
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#define ASSERT(expr) ((void)0)
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#ifndef STATIC
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# define STATIC static noinline
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#endif
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#ifndef STATIC_INLINE
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# define STATIC_INLINE static inline
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#endif
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#else /* DEBUG */
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#define ASSERT(expr) \
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(unlikely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__))
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#ifndef STATIC
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# define STATIC noinline
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#endif
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/*
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* We stop inlining of inline functions in debug mode.
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* Unfortunately, this means static inline in header files
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* get multiple definitions, so they need to remain static.
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* This then gives tonnes of warnings about unused but defined
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* functions, so we need to add the unused attribute to prevent
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* these spurious warnings.
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*/
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#ifndef STATIC_INLINE
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# define STATIC_INLINE static __attribute__ ((unused)) noinline
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#endif
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#endif /* DEBUG */
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#endif /* __XFS_SUPPORT_DEBUG_H__ */
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