From: Sam Ravnborg <sam@ravnborg.org>
To: linux-kbuild@vger.kernel.org
Subject: Re: How to avoid "version generation failed" warning?
Date: Sat, 23 Mar 2024 16:03:50 +0100 [thread overview]
Message-ID: <20240323150350.GA936705@ravnborg.org> (raw)
In-Reply-To: <20240323131407.GA897267@ravnborg.org>
Hi all.
On Sat, Mar 23, 2024 at 02:14:07PM +0100, Sam Ravnborg wrote:
> Hi all.
>
> When building sparc32 allmodconfig I see a lot of warnings like these:
>
> WARNING: modpost: EXPORT symbol "empty_zero_page" [vmlinux] version generation failed, symbol will not be versioned.
> Is "empty_zero_page" prototyped in <asm/asm-prototypes.h>?
> WARNING: modpost: EXPORT symbol "__udelay" [vmlinux] version generation failed, symbol will not be versioned.
> Is "__udelay" prototyped in <asm/asm-prototypes.h>?
> WARNING: modpost: EXPORT symbol "__ndelay" [vmlinux] version generation failed, symbol will not be versioned.
> Is "__ndelay" prototyped in <asm/asm-prototypes.h>?
> WARNING: modpost: EXPORT symbol "__ashldi3" [vmlinux] version generation failed, symbol will not be versioned.
> Is "__ashldi3" prototyped in <asm/asm-prototypes.h>?
> WARNING: modpost: EXPORT symbol "__ashrdi3" [vmlinux] version generation failed, symbol will not be versioned.
> Is "__ashrdi3" prototyped in <asm/asm-prototypes.h>?
> WARNING: modpost: EXPORT symbol "__lshrdi3" [vmlinux] version generation failed, symbol will not be versioned.
> Is "__lshrdi3" prototyped in <asm/asm-prototypes.h>?
> WARNING: modpost: "__udelay" [kernel/locking/locktorture.ko] has no CRC!
> WARNING: modpost: "__udelay" [kernel/rcu/rcutorture.ko] has no CRC!
> WARNING: modpost: "__udelay" [kernel/rcu/rcuscale.ko] has no CRC!
> WARNING: modpost: "__udelay" [kernel/rcu/refscale.ko] has no CRC!
> WARNING: modpost: "__ndelay" [kernel/rcu/refscale.ko] has no CRC!
> WARNING: modpost: "__udelay" [kernel/time/test_udelay.ko] has no CRC!
> WARNING: modpost: "__udelay" [kernel/scftorture.ko] has no CRC!
> WARNING: modpost: "__ashrdi3" [fs/quota/quota_tree.ko] has no CRC!
> WARNING: modpost: "__ashldi3" [fs/ext4/ext4.ko] has no CRC!
> ...
>
> I already tried to add the prototypes to asm/asm-prototypes.h - but this
> did not have any effect.
When I triggered a re-build of the affected .S files it worked.
(I am used to kbuild handle all dependencies so well...)
Solution seems simple:
- Add missing includes and missing prototypes.
- Include the asm-prototypes in the relevant .S files to trigger rebuild
when the asm-prototype file changes.
I will prepare a patch and submit it to the sparc list.
Sam
prev parent reply other threads:[~2024-03-23 15:05 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-23 13:14 How to avoid "version generation failed" warning? Sam Ravnborg
2024-03-23 15:03 ` Sam Ravnborg [this message]
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