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kmsg_dump() fails to build when CONFIG_PRINTK=n; provide stubs for the kmsg_dump*() functions when CONFIG_PRINTK=n. kernel/printk.c: In function 'kmsg_dump': kernel/printk.c:1501: error: 'log_buf_len' undeclared (first use in this function) kernel/printk.c:1502: error: 'logged_chars' undeclared (first use in this function) kernel/printk.c:1506: error: 'log_buf' undeclared (first use in this function) Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Simon Kagstrom <simon.kagstrom@netinsight.net> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
/*
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* linux/include/kmsg_dump.h
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*
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* Copyright (C) 2009 Net Insight AB
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*
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* Author: Simon Kagstrom <simon.kagstrom@netinsight.net>
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive
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* for more details.
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*/
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#ifndef _LINUX_KMSG_DUMP_H
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#define _LINUX_KMSG_DUMP_H
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#include <linux/list.h>
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enum kmsg_dump_reason {
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KMSG_DUMP_OOPS,
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KMSG_DUMP_PANIC,
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};
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/**
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* struct kmsg_dumper - kernel crash message dumper structure
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* @dump: The callback which gets called on crashes. The buffer is passed
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* as two sections, where s1 (length l1) contains the older
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* messages and s2 (length l2) contains the newer.
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* @list: Entry in the dumper list (private)
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* @registered: Flag that specifies if this is already registered
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*/
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struct kmsg_dumper {
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void (*dump)(struct kmsg_dumper *dumper, enum kmsg_dump_reason reason,
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const char *s1, unsigned long l1,
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const char *s2, unsigned long l2);
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struct list_head list;
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int registered;
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};
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#ifdef CONFIG_PRINTK
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void kmsg_dump(enum kmsg_dump_reason reason);
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int kmsg_dump_register(struct kmsg_dumper *dumper);
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int kmsg_dump_unregister(struct kmsg_dumper *dumper);
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#else
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static inline void kmsg_dump(enum kmsg_dump_reason reason)
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{
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}
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static inline int kmsg_dump_register(struct kmsg_dumper *dumper)
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{
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return -EINVAL;
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}
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static inline int kmsg_dump_unregister(struct kmsg_dumper *dumper)
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{
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return -EINVAL;
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}
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#endif
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#endif /* _LINUX_KMSG_DUMP_H */
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