linux-kernel - Re: [kernel] Re: kernel/rcutree.h:301: sorry, unimplemented: inlining failed in call to 'rcu_bootup

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Date:	Fri, 18 Dec 2009 09:27:50 -0800
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	"Mr. James W. Laferriere" <babydr@...y-dragons.com>
Cc:	Américo Wang <xiyou.wangcong@...il.com>,
	Linux Kernel Maillist <linux-kernel@...r.kernel.org>
Subject: Re: [kernel] Re: kernel/rcutree.h:301: sorry, unimplemented:
	inlining failed in call to 'rcu_bootup_announce': function body not
	available

On Fri, Dec 18, 2009 at 08:07:51AM -0900, Mr. James W. Laferriere wrote:
> 	Hello Paul (& Americo, ALL) ,
>
> On Fri, 18 Dec 2009, Paul E. McKenney wrote:
>> On Fri, Dec 18, 2009 at 05:52:51PM +0800, Américo Wang wrote:
>>> On Fri, Dec 18, 2009 at 1:45 PM, Mr. James W. Laferriere
>>> <babydr@...y-dragons.com> wrote:
>>>>        Hello All ,
>>>>
>>>>  gcc -Wp,-MD,kernel/.rcutree.o.d  -nostdinc -isystem
>>>> /usr/lib/gcc/i486-slackware-linux/3.4.6/include -Iinclude
>>>> -I/usr/src/linux-2.6.32.1/arch/x86/include -include 
>>>> include/linux/autoconf.h
>>>> -D__KERNEL__ -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs
>>>> -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration
>>>> -Wno-format-security -fno-delete-null-pointer-checks -O2 -m32 
>>>> -msoft-float
>>>> -mregparm=3 -freg-struct-return -mpreferred-stack-boundary=2
>>>> -fno-unit-at-a-time -march=i686 -ffreestanding -DCONFIG_AS_CFI=1 -pipe
>>>> -Wno-sign-compare -fno-asynchronous-unwind-tables -mno-sse -mno-mmx
>>>> -mno-sse2 -mno-3dnow -fno-omit-frame-pointer -fno-optimize-sibling-calls 
>>>> -g
>>>> -Wdeclaration-after-statement   -D"KBUILD_STR(s)=#s"
>>>> -D"KBUILD_BASENAME=KBUILD_STR(rcutree)"
>>>>  -D"KBUILD_MODNAME=KBUILD_STR(rcutree)" -c -o kernel/rcutree.o
>>>> kernel/rcutree.c
>>>> kernel/rcutree.c: In function `__rcu_init':
>>>> kernel/rcutree.h:301: sorry, unimplemented: inlining failed in call to
>>>> 'rcu_bootup_announce': function body not available
>>>> kernel/rcutree.c:1740: sorry, unimplemented: called from here
>>>> make[1]: *** [kernel/rcutree.o] Error 1
>>>> make: *** [kernel] Error 2
>>>>
>>>>        There is no way ,  thru the 'make *config' methods to 
>>>> disable this
>>>> broken stuff ,  So How may I get past this brokeness ?
>>>>        And looking the posts for the 2.6.32-pre/rc the old rcu has 
>>>> been
>>>> trashed completely .  So I am not able to even try using that .
>>>>
>>>>        Would someone please shed some light on this .  I really 
>>>> need the
>>>> updates for the Fusion/mpt driver & the changes in the /md/ tree as well 
>>>> .
>>>
>>> Hmm, I see the problem, but not sure how to fix it...
>>>
>>> Paul, why do we have #include "rcutree_plugin.h" at the bottom
>>> of rcutree.c? This looks strange for me...
>>>
>>> How about moving it up? At least just move upper to rcu_init().
>>
>> Could you please apply commit #dbe01350fa8ce0c11948ab7d6be71a4d901be151
>> from Linus's git tree?  Corresponding diff attached.
>>
>> 							Thanx, Paul
>>
>> ------------------------------------------------------------------------
>>
>> diff --git a/kernel/rcutree.h b/kernel/rcutree.h
>> index c1891c3..ddb79ec 100644
>> --- a/kernel/rcutree.h
>> +++ b/kernel/rcutree.h
>> @@ -301,7 +301,7 @@ 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);
>> +static void rcu_bootup_announce(void);
>> 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 ef2a58c..c03edf7 100644
>> --- a/kernel/rcutree_plugin.h
>> +++ b/kernel/rcutree_plugin.h
>> @@ -33,7 +33,7 @@ DEFINE_PER_CPU(struct rcu_data, rcu_preempt_data);
>> /*
>>  * Tell them what RCU they are running.
>>  */
>> -static inline void rcu_bootup_announce(void)
>> +static void rcu_bootup_announce(void)
>> {
>> 	printk(KERN_INFO
>> 	       "Experimental preemptable hierarchical RCU implementation.\n");
>> @@ -481,7 +481,7 @@ void exit_rcu(void)
>> /*
>>  * Tell them what RCU they are running.
>>  */
>> -static inline void rcu_bootup_announce(void)
>> +static void rcu_bootup_announce(void)
>> {
>> 	printk(KERN_INFO "Hierarchical RCU implementation.\n");
>> }
>
> 	Thank you & Americo for responding .
>
> 	Patch applied & same error as far as I can tell .
> 	did
>
> 	make mrproper
> 	cp ../old.config .config	(same as in previous email)
> 	make oldconfig
> 	( time make V=1 KBUILD_VERBOSE=1 INSTALL_PATH=/boot clean all install 
> modules_install ) >../linux-2.6.32.1d.log 2>&1
> 	error'd (See below) ...
>
> 	If there is any further info I can provide or something I can do to
> 	provide ,  Please request it .

Hmmm....  Yes.  Could you please execute the following command from
the top-level directory of your patched kernel source tree?

	grep rcu_bootup_announce kernel/rcu*

I would expect the following output:

	kernel/rcutree.c:       rcu_bootup_announce();
	kernel/rcutree.h:static void rcu_bootup_announce(void);
	kernel/rcutree_plugin.h:static void __init rcu_bootup_announce(void)
	kernel/rcutree_plugin.h:static void __init rcu_bootup_announce(void)

							Thanx, Paul

> 		Tia ,  JimL
>
>   gcc -Wp,-MD,kernel/.rcutree.o.d  -nostdinc -isystem 
> /usr/lib/gcc/i486-slackware-linux/3.4.6/include -Iinclude  
> -I/usr/src/linux-2.6.32.1/arch/x86/include -include 
> include/linux/autoconf.h -D__KERNEL__ -Wall -Wundef -Wstrict-prototypes 
> -Wno-trigraphs -fno-strict-aliasing -fno-common 
> -Werror-implicit-function-declaration -Wno-format-security 
> -fno-delete-null-pointer-checks -O2 -m32 -msoft-float -mregparm=3 
> -freg-struct-return -mpreferred-stack-boundary=2 -fno-unit-at-a-time 
> -march=i686 -ffreestanding -DCONFIG_AS_CFI=1 -pipe -Wno-sign-compare 
> -fno-asynchronous-unwind-tables -mno-sse -mno-mmx -mno-sse2 -mno-3dnow 
> -fno-omit-frame-pointer -fno-optimize-sibling-calls -g 
> -Wdeclaration-after-statement   -D"KBUILD_STR(s)=#s" 
> -D"KBUILD_BASENAME=KBUILD_STR(rcutree)"  
> -D"KBUILD_MODNAME=KBUILD_STR(rcutree)"  -c -o kernel/rcutree.o 
> kernel/rcutree.c
> kernel/rcutree.c: In function `__rcu_init':
> kernel/rcutree.h:301: sorry, unimplemented: inlining failed in call to 
> 'rcu_bootup_announce': function body not available
> kernel/rcutree.c:1740: sorry, unimplemented: called from here
> make[1]: *** [kernel/rcutree.o] Error 1
> make: *** [kernel] Error 2
>
>
> -- 
> +------------------------------------------------------------------+
> | James   W.   Laferriere | System    Techniques | Give me VMS     |
> | Network&System Engineer | 3237     Holden Road |  Give me Linux  |
> | babydr@...y-dragons.com | Fairbanks, AK. 99709 |   only  on  AXP |
> +------------------------------------------------------------------+

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