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Message-ID: <202408191739.UV22bvQV-lkp@intel.com>
Date: Mon, 19 Aug 2024 17:20:23 +0800
From: kernel test robot <lkp@...el.com>
To: alexs@...nel.org, linux-kernel@...r.kernel.org
Cc: oe-kbuild-all@...ts.linux.dev, Alex Shi <alexs@...nel.org>,
linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] mm: skip less than check for MAX_NR_ZONES
Hi,
kernel test robot noticed the following build errors:
[auto build test ERROR on akpm-mm/mm-everything]
url: https://github.com/intel-lab-lkp/linux/commits/alexs-kernel-org/mm-skip-less-than-check-for-MAX_NR_ZONES/20240819-111528
base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link: https://lore.kernel.org/r/20240819031911.367900-1-alexs%40kernel.org
patch subject: [PATCH] mm: skip less than check for MAX_NR_ZONES
config: openrisc-allnoconfig (https://download.01.org/0day-ci/archive/20240819/202408191739.UV22bvQV-lkp@intel.com/config)
compiler: or1k-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240819/202408191739.UV22bvQV-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/202408191739.UV22bvQV-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from include/linux/mm_types.h:18,
from include/linux/sched/signal.h:14,
from include/linux/ptrace.h:7,
from arch/openrisc/kernel/asm-offsets.c:28:
>> include/linux/page-flags-layout.h:17:20: error: token "=" is not valid in preprocessor expressions
17 | #elif MAX_NR_ZONES = 2
| ^
make[3]: *** [scripts/Makefile.build:117: arch/openrisc/kernel/asm-offsets.s] Error 1
make[3]: Target 'prepare' not remade because of errors.
make[2]: *** [Makefile:1193: prepare0] Error 2
make[2]: Target 'prepare' not remade because of errors.
make[1]: *** [Makefile:224: __sub-make] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:224: __sub-make] Error 2
make: Target 'prepare' not remade because of errors.
vim +17 include/linux/page-flags-layout.h
7
8 /*
9 * When a memory allocation must conform to specific limitations (such
10 * as being suitable for DMA) the caller will pass in hints to the
11 * allocator in the gfp_mask, in the zone modifier bits. These bits
12 * are used to select a priority ordered list of memory zones which
13 * match the requested limits. See gfp_zone() in include/linux/gfp.h
14 */
15 #if MAX_NR_ZONES < 2
16 #define ZONES_SHIFT 0
> 17 #elif MAX_NR_ZONES = 2
18 #define ZONES_SHIFT 1
19 #elif MAX_NR_ZONES <= 4
20 #define ZONES_SHIFT 2
21 #elif MAX_NR_ZONES <= 8
22 #define ZONES_SHIFT 3
23 #else
24 #error ZONES_SHIFT "Too many zones configured"
25 #endif
26
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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