Messages in this thread Patch in this message | | | Date | Mon, 24 Oct 2005 16:33:36 -0700 | From | George Anzinger <> | Subject | [PATCH] 2.6.14-rc5 fails to build with out CONFIG_FUTEX |
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Both kernel/exit.c and fs/dcache.c refer to functions in kernel/futex.c which is not built unless CONFIG_FUTEX is true. This causes a build failure at link time: LD vmlinux kernel/built-in.o(.text+0xab58): In function `do_exit': /usr/src/linux-2.6.14-rc/kernel/exit.c:851: undefined reference to `exit_futex' fs/built-in.o(.text+0x1b2bf): In function `dput': /usr/src/linux-2.6.14-rc/fs/dcache.c:165: undefined reference to `futex_free_robust_list'
Attached patch "defines" away the problem. -- George Anzinger george@mvista.com HRT (High-res-timers): http://sourceforge.net/projects/high-res-timers/ Source: MontaVista Software, Inc.
Type: Defect Fix Description: CONFIG_FUTEX is an option but kernel/exit.c and fs/dcache.c refer to functions in kernel/futux.c unconditionally. This patch ties those request off and allows a build with CONFIG_FUTEX "not set".
Signed-off-by: George Anzinger <george@mvista.com>
include/linux/futex.h | 6 +++++- 1 files changed, 5 insertions(+), 1 deletion(-)
Index: linux-2.6.14-rc/include/linux/futex.h =================================================================== --- linux-2.6.14-rc.orig/include/linux/futex.h +++ linux-2.6.14-rc/include/linux/futex.h @@ -35,9 +35,13 @@ long do_futex(unsigned long uaddr, int op, int val, unsigned long timeout, unsigned long uaddr2, int val2, int val3); - +#ifdef CONFIG_FUTEX extern void futex_free_robust_list(struct inode *inode); extern void exit_futex(struct task_struct *tsk); +#else +#define futex_free_robust_list(a) +#define exit_futex(b) +#endif static inline void futex_init_inode(struct inode *inode) { INIT_LIST_HEAD(&inode->i_data.robust_list); | |