* Re: 2.6.32-rc5-git3 compile problems
2009-10-28 3:07 ` Xiaotian Feng
@ 2009-10-28 6:37 ` Paul E. McKenney
2009-10-28 16:00 ` Alex
1 sibling, 0 replies; 4+ messages in thread
From: Paul E. McKenney @ 2009-10-28 6:37 UTC (permalink / raw)
To: Xiaotian Feng; +Cc: Alex, lkml
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
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> > the body of a message to majordomo@vger.kernel.org
> > More majordomo info at http://vger.kernel.org/majordomo-info.html
> > Please read the FAQ at http://www.tux.org/lkml/
> >
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: 2.6.32-rc5-git3 compile problems
2009-10-28 3:07 ` Xiaotian Feng
2009-10-28 6:37 ` Paul E. McKenney
@ 2009-10-28 16:00 ` Alex
1 sibling, 0 replies; 4+ messages in thread
From: Alex @ 2009-10-28 16:00 UTC (permalink / raw)
To: Xiaotian Feng; +Cc: lkml, paulmck
Hi,
> Try this patch, thanks.
I believe your patch to rcutree_plugin.h and rcutree.h worked, but I'm
now still having difficulty with con_init():
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+0x3a6b): undefined reference to `.L1626'
make: *** [.tmp_vmlinux1] Error 1
Is this also a bug, or am I doing something wrong? Is there something
I can do to produce more debugging info, or troubleshoot it further?
This is 2.6.32-rc5-git3, gcc-3.4.4, glibc-2.3.6, and binutils-2.20.51.0.2.
Thanks,
Alex
> ---
> 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.
> + */
^ permalink raw reply [flat|nested] 4+ messages in thread