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um: kernel: ksyms: Export symbol syscall() for fixing modpost issue

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syscall() is implemented in libc.so/a (e.g. for glibc, in "syscall.o"),
so for normal ".o" files, it is undefined, neither can be found within
kernel wide, so will break modpost.

Since ".o" files is OK, can simply export 'syscall' symbol, let modpost
know about that, then can fix this issue.

The related error (with allmodconfig under um):

    MODPOST 1205 modules
  ERROR: "syscall" [fs/hostfs/hostfs.ko] undefined!

Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Chen Gang 2014-10-04 21:11:31 +08:00 committed by Richard Weinberger
parent 5f32943b5e
commit a791b1565f
1 changed files with 3 additions and 0 deletions
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arch/um/kernel/ksyms.c
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@ -42,3 +42,6 @@ EXPORT_SYMBOL(os_makedev);
EXPORT_SYMBOL(add_sigio_fd);
EXPORT_SYMBOL(ignore_sigio_fd);
EXPORT_SYMBOL(sigio_broken);
extern long int syscall (long int __sysno, ...);
EXPORT_SYMBOL(syscall);