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    SubjectRe: 2.6.21-rc5-mm2 - compile error on x86-64
    On Thu, 29 Mar 2007 20:20:20 +0200
    Helge Hafting <helgehaf@aitel.hist.no> wrote:

    > I tried compiling this on x86-64, and got this compile error:
    > CC init/version.o
    > CC init/missing_syscalls.o
    > In file included from init/missing_syscalls.c:97:
    > init/missing_syscalls.h:279:2: warning: #warning syscall ssetmask not
    > implemented
    > init/missing_syscalls.h:1263:2: warning: #warning syscall getcpu not
    > implemented
    > init/missing_syscalls.h:1267:2: warning: #warning syscall epoll_pwait not
    > implemented
    > init/missing_syscalls.h:1271:2: warning: #warning syscall lutimesat not
    > implemented
    > init/missing_syscalls.h:1275:2: warning: #warning syscall revokeat not
    > implemented
    > init/missing_syscalls.h:1279:2: warning: #warning syscall frevoke not
    > implemented

    yup, people will presumably work on fixing these things up after the
    feature hits mainline.

    > LD init/built-in.o
    > LD .tmp_vmlinux1
    > fs/built-in.o: In function `proc_root_init':
    > /usr/src/linux/fs/proc/root.c:83: undefined reference to `proc_sys_init'

    Ah. I assume you have CONFIG_SYSCTL=y, CONFIG_PROC_SYSCTL=n?




    From: Andrew Morton <akpm@linux-foundation.org>

    We're using #ifdef CONFIG_SYSCTL, but we should be using CONFIG_PROC_SYSCTL,
    so we get

    fs/built-in.o: In function `proc_root_init':
    /usr/src/linux/fs/proc/root.c:83: undefined reference to `proc_sys_init'

    Fix that up and remove an ifdef-in-C.

    Cc: "Eric W. Biederman" <ebiederm@xmission.com>
    Cc: Helge Hafting <helgehaf@aitel.hist.no>
    Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
    ---

    fs/proc/internal.h | 4 ++++
    fs/proc/root.c | 2 --
    2 files changed, 4 insertions(+), 2 deletions(-)

    diff -puN fs/proc/root.c~proc-fix-linkage-with-config_sysctl=y-config_proc_sysctl=n fs/proc/root.c
    --- a/fs/proc/root.c~proc-fix-linkage-with-config_sysctl=y-config_proc_sysctl=n
    +++ a/fs/proc/root.c
    @@ -79,9 +79,7 @@ void __init proc_root_init(void)
    proc_device_tree_init();
    #endif
    proc_bus = proc_mkdir("bus", NULL);
    -#ifdef CONFIG_SYSCTL
    proc_sys_init();
    -#endif
    }

    static int proc_root_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat
    diff -puN fs/proc/internal.h~proc-fix-linkage-with-config_sysctl=y-config_proc_sysctl=n fs/proc/internal.h
    --- a/fs/proc/internal.h~proc-fix-linkage-with-config_sysctl=y-config_proc_sysctl=n
    +++ a/fs/proc/internal.h
    @@ -11,7 +11,11 @@

    #include <linux/proc_fs.h>

    +#ifdef CONFIG_PROC_SYSCTL
    extern int proc_sys_init(void);
    +#else
    +static inline void proc_sys_init(void) { }
    +#endif

    struct vmalloc_info {
    unsigned long used;
    _
    -
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