mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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a95743b530
Some libc's like musl libc don't provide execinfo.h since it's not part of POSIX. In order to fix compilation on musl, only include execinfo.h if available (HAVE_BACKTRACE_SUPPORT) This was discovered withc104c16073("Kunit to check the longest symbol length") which starts to include linux/kallsyms.h with Alpine Linux' configs. Link: https://lkml.kernel.org/r/20250622014608.448718-1-fossdd@pwned.life Fixes:c104c16073("Kunit to check the longest symbol length") Signed-off-by: Achill Gilgenast <fossdd@pwned.life> Cc: Luis Henriques <luis@igalia.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
39 lines
762 B
C
39 lines
762 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LIBLOCKDEP_LINUX_KALLSYMS_H_
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#define _LIBLOCKDEP_LINUX_KALLSYMS_H_
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#include <linux/kernel.h>
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#include <stdio.h>
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#include <unistd.h>
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#define KSYM_NAME_LEN 512
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struct module;
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static inline const char *kallsyms_lookup(unsigned long addr,
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unsigned long *symbolsize,
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unsigned long *offset,
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char **modname, char *namebuf)
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{
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return NULL;
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}
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#ifdef HAVE_BACKTRACE_SUPPORT
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#include <execinfo.h>
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#include <stdlib.h>
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static inline void print_ip_sym(const char *loglvl, unsigned long ip)
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{
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char **name;
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name = backtrace_symbols((void **)&ip, 1);
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dprintf(STDOUT_FILENO, "%s\n", *name);
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free(name);
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}
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#else
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static inline void print_ip_sym(const char *loglvl, unsigned long ip) {}
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#endif
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#endif
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