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    SubjectRe: 2.6.32-rc5-git3 compile problems
    On Wed, Oct 28, 2009 at 11:07:13AM +0800, Xiaotian Feng wrote:
    > Try this patch, thanks.
    > ---
    > index b40ac57..04a4272 100644
    > --- a/kernel/rcutree.h
    > +++ b/kernel/rcutree.h
    > @@ -292,8 +292,24 @@ DECLARE_PER_CPU(struct rcu_data, rcu_preempt_data);
    >
    > #else /* #ifdef RCU_TREE_NONCORE */
    >
    > -/* Forward declarations for rcutree_plugin.h */
    > -static inline void rcu_bootup_announce(void);
    > +#ifdef CONFIG_TREE_PREEMPT_RCU
    > +/*
    > + * Tell them what RCU they are running.
    > + */
    > +static inline void rcu_bootup_announce(void)
    > +{
    > + printk(KERN_INFO
    > + "Experimental preemptable hierarchical RCU implementation.\n");
    > +}
    > +#else
    > +/*
    > + * Tell them what RCU they are running.
    > + */
    > +static inline void rcu_bootup_announce(void)
    > +{
    > + printk(KERN_INFO "Hierarchical RCU implementation.\n");
    > +}
    > +#endif
    > long rcu_batches_completed(void);
    > static void rcu_preempt_note_context_switch(int cpu);
    > static int rcu_preempted_readers(struct rcu_node *rnp);
    > diff --git a/kernel/rcutree_plugin.h b/kernel/rcutree_plugin.h
    > index c0cb783..1b96445 100644
    > --- a/kernel/rcutree_plugin.h
    > +++ b/kernel/rcutree_plugin.h
    > @@ -31,15 +31,6 @@ struct rcu_state rcu_preempt_state =
    > RCU_STATE_INITIALIZER(rcu_preempt_state);
    > DEFINE_PER_CPU(struct rcu_data, rcu_preempt_data);
    >
    > /*
    > - * Tell them what RCU they are running.
    > - */
    > -static inline void rcu_bootup_announce(void)

    Given that this is anything but performance-critical, could we instead
    remove the "inline" above and on the forward declaration, possibly
    also marking as __init?

    Or am I misunderstanding the problem?

    Thanx, Paul

    > -{
    > - printk(KERN_INFO
    > - "Experimental preemptable hierarchical RCU implementation.\n");
    > -}
    > -
    > -/*
    > * Return the number of RCU-preempt batches processed thus far
    > * for debug and statistics.
    > */
    > @@ -462,14 +453,6 @@ void exit_rcu(void)
    > #else /* #ifdef CONFIG_TREE_PREEMPT_RCU */
    >
    > /*
    > - * Tell them what RCU they are running.
    > - */
    > -static inline void rcu_bootup_announce(void)
    > -{
    > - printk(KERN_INFO "Hierarchical RCU implementation.\n");
    > -}
    > -
    > -/*
    > * Return the number of RCU batches processed thus far for debug & stats.
    > */
    > long rcu_batches_completed(void)
    >
    > On Wed, Oct 28, 2009 at 4:50 AM, Alex <mysqlstudent@gmail.com> wrote:
    > > Hi,
    > >
    > > I receive the following error when using defconfig on 2.6.32-rc5-git3:
    > >
    > >  CC      kernel/seccomp.o
    > >  CC      kernel/rcutree.o
    > > kernel/rcutree.c: In function `__rcu_init':
    > > kernel/rcutree.h:296: sorry, unimplemented: inlining failed in call to
    > > 'rcu_bootup_announce': function body not available
    > > kernel/rcutree.c:1702: sorry, unimplemented: called from here
    > > make[1]: *** [kernel/rcutree.o] Error 1
    > > make: *** [kernel] Error 2
    > >
    > > Is this something I'm doing wrong? I'm actually trying to compile
    > > 2.6.31.5 with the default config, and it too fails, for another
    > > reason. I'm having difficulty compiling 2.6.31 and 2.6.31.5 on x86
    > > with gcc-3.4.4 and binutils-2.20.51.0.2. I'm also using glibc-2.3.6.
    > >
    > >  AS      arch/x86/lib/thunk_32.o
    > >  CC      arch/x86/lib/usercopy_32.o
    > >  AR      arch/x86/lib/lib.a
    > >  LD      vmlinux.o
    > >  MODPOST vmlinux.o
    > >  GEN     .version
    > >  CHK     include/linux/compile.h
    > >  UPD     include/linux/compile.h
    > >  CC      init/version.o
    > >  LD      init/built-in.o
    > >  LD      .tmp_vmlinux1
    > > drivers/built-in.o: In function `con_init':
    > > vt.c:(.init.text+0x3c5b): undefined reference to `.L1446'
    > > make: *** [.tmp_vmlinux1] Error 1
    > >
    > > I'd sure appreciate any pointers on how to troubleshoot this.
    > >
    > > Thanks,
    > > Alex
    > > --
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    > >
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