linux-kernel - Re: arch/alpha/include/asm/page.h:9:25: error: 'CONFIG_PAGE_SHIFT' undeclared; did you mean 'CONFIG_HAVE

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Date: Sun, 14 Apr 2024 17:46:54 +0200
From: "Arnd Bergmann" <arnd@...db.de>
To: "kernel test robot" <lkp@...el.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
 "Thomas Gleixner" <tglx@...utronix.de>
Subject: Re: arch/alpha/include/asm/page.h:9:25: error: 'CONFIG_PAGE_SHIFT' undeclared;
 did you mean 'CONFIG_HAVE_PCI'?

On Sun, Apr 14, 2024, at 16:52, kernel test robot wrote:
> tree:   
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
> master
> head:   7efd0a74039fb6b584be2cb91c1d0ef0bd796ee1
> commit: 5394f1e9b687bcf26595cabf83483e568676128d arch: define 
> CONFIG_PAGE_SIZE_*KB on all architectures
> date:   6 weeks ago
> config: alpha-randconfig-r016-20220816 
> (https://download.01.org/0day-ci/archive/20240414/202404142258.3CWV3f05-lkp@intel.com/config)
> compiler: alpha-linux-gcc (GCC) 13.2.0
> reproduce (this is a W=1 build): 
> (https://download.01.org/0day-ci/archive/20240414/202404142258.3CWV3f05-lkp@intel.com/reproduce)
>
> If you fix the issue in a separate patch/commit (i.e. not just a new 
> version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@...el.com>
> | Closes: 
> https://lore.kernel.org/oe-kbuild-all/202404142258.3CWV3f05-lkp@intel.com/
>
> All errors (new ones prefixed by >>):
>
>    In file included from include/linux/thread_info.h:60,
>                     from include/asm-generic/current.h:6,
>                     from ./arch/alpha/include/generated/asm/current.h:1,
>                     from include/linux/sched.h:12,
>                     from arch/alpha/kernel/asm-offsets.c:10:
>    arch/alpha/include/asm/thread_info.h:43: warning: 
> "current_thread_info" redefined
>       43 | #define current_thread_info()  __current_thread_info
>          | 
>    include/linux/thread_info.h:24: note: this is the location of the 
> previous definition
>       24 | #define current_thread_info() ((struct thread_info *)current)
>          | 
>    In file included from include/linux/shm.h:6,
>                     from include/linux/sched.h:23:
>    include/asm-generic/getorder.h: In function 'get_order':
>>> arch/alpha/include/asm/page.h:9:25: error: 'CONFIG_PAGE_SHIFT' undeclared (first use in this function); did you mean 'CONFIG_HAVE_PCI'?
>        9 | #define PAGE_SHIFT      CONFIG_PAGE_SHIFT
>          |                         ^~~~~~~~~~~~~~~~~

I tried reproducing this, but it always works for me here,
using my own gcc-13.2 build. I tried both the latest linux-next
and the 5394f1e9b commit.

    Arnd