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 09:08:00 -0900 (AKST)
From:	"Mr. James W. Laferriere" <babydr@...y-dragons.com>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.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

 	Hello Paul ,

On Fri, 18 Dec 2009, Paul E. McKenney wrote:
> On Fri, Dec 18, 2009 at 08:07:51AM -0900, Mr. James W. Laferriere wrote:
>> 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

 	This is with your patch applied on top of linux-2.6.32.1.tar.gz
 	no other patches or additions .

 	OK ,  it looks like I wandered right by the first file ie: 
'kernel/rcutree.h' so I need to patch that as well .  Doing this by hand as the 
offending system is not online and all I have is serial console access presently 
.
 	But ,  the last two you've changed to 'void __init' instead of just 
'void' .
 	Do you want me to add those changes to the file 
'kernel/rcutree_plugin.h' as well ?

# grep rcu_bootup_announce kernel/rcu*
kernel/rcutree.c:       rcu_bootup_announce();
kernel/rcutree.h:static inline void rcu_bootup_announce(void);
kernel/rcutree_plugin.h:static void rcu_bootup_announce(void)
kernel/rcutree_plugin.h:static void rcu_bootup_announce(void)

 		Tia ,  JimL
-- 
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| James   W.   Laferriere | System    Techniques | Give me VMS     |
| Network&System Engineer | 3237     Holden Road |  Give me Linux  |
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