From: kernel test robot <lkp@intel.com>
To: Ye Liu <liuye@kylinos.cn>
Cc: oe-kbuild-all@lists.linux.dev,
Andrew Morton <akpm@linux-foundation.org>,
Linux Memory Management List <linux-mm@kvack.org>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
Dev Jain <dev.jain@arm.com>
Subject: [linux-next:master 3830/4234] include/linux/mm.h:78: warning: "PAGES_TO_MB" redefined
Date: Fri, 22 Aug 2025 18:26:33 +0800 [thread overview]
Message-ID: <202508221819.lYpl8jIM-lkp@intel.com> (raw)
Hi Ye,
FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 0f4c93f7eb861acab537dbe94441817a270537bf
commit: b91db3a36f79ab7fb796fc3fbbe0950a04ff9589 [3830/4234] mm: replace (20 - PAGE_SHIFT) with common macros for pages<->MB conversion
config: arc-randconfig-001-20250822 (https://download.01.org/0day-ci/archive/20250822/202508221819.lYpl8jIM-lkp@intel.com/config)
compiler: arc-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250822/202508221819.lYpl8jIM-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202508221819.lYpl8jIM-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from arch/arc/kernel/asm-offsets.c:7:
>> include/linux/mm.h:78: warning: "PAGES_TO_MB" redefined
#define PAGES_TO_MB(pages) ((pages) >> (20 - PAGE_SHIFT))
In file included from arch/arc/include/asm/irqflags-arcv2.h:9,
from arch/arc/include/asm/irqflags.h:13,
from include/linux/irqflags.h:18,
from include/linux/spinlock.h:59,
from include/linux/sched.h:37,
from arch/arc/kernel/asm-offsets.c:6:
arch/arc/include/asm/arcregs.h:155: note: this is the location of the previous definition
#define PAGES_TO_MB(n_pages) (PAGES_TO_KB(n_pages) >> 10)
--
In file included from include/sound/pcm.h:15,
from sound/usb/pcm.c:14:
>> include/linux/mm.h:78: warning: "PAGES_TO_MB" redefined
#define PAGES_TO_MB(pages) ((pages) >> (20 - PAGE_SHIFT))
In file included from arch/arc/include/asm/irqflags-arcv2.h:9,
from arch/arc/include/asm/irqflags.h:13,
from include/linux/irqflags.h:18,
from include/linux/spinlock.h:59,
from include/linux/mmzone.h:8,
from include/linux/gfp.h:7,
from include/linux/slab.h:16,
from sound/usb/pcm.c:6:
arch/arc/include/asm/arcregs.h:155: note: this is the location of the previous definition
#define PAGES_TO_MB(n_pages) (PAGES_TO_KB(n_pages) >> 10)
during RTL pass: mach
sound/usb/pcm.c: In function 'retire_capture_urb':
sound/usb/pcm.c:1390:1: internal compiler error: in arc_ifcvt, at config/arc/arc.c:9110
}
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
--
In file included from include/sound/pcm.h:15,
from sound/usb/quirks.c:15:
>> include/linux/mm.h:78: warning: "PAGES_TO_MB" redefined
#define PAGES_TO_MB(pages) ((pages) >> (20 - PAGE_SHIFT))
In file included from arch/arc/include/asm/irqflags-arcv2.h:9,
from arch/arc/include/asm/irqflags.h:13,
from include/linux/irqflags.h:18,
from include/linux/spinlock.h:59,
from include/linux/mmzone.h:8,
from include/linux/gfp.h:7,
from include/linux/slab.h:16,
from sound/usb/quirks.c:6:
arch/arc/include/asm/arcregs.h:155: note: this is the location of the previous definition
#define PAGES_TO_MB(n_pages) (PAGES_TO_KB(n_pages) >> 10)
during RTL pass: mach
sound/usb/quirks.c: In function 'snd_usb_apply_boot_quirk':
sound/usb/quirks.c:1675:1: internal compiler error: in arc_ifcvt, at config/arc/arc.c:9110
}
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
--
In file included from include/sound/pcm.h:15,
from sound/usb/clock.c:16:
>> include/linux/mm.h:78: warning: "PAGES_TO_MB" redefined
#define PAGES_TO_MB(pages) ((pages) >> (20 - PAGE_SHIFT))
In file included from arch/arc/include/asm/irqflags-arcv2.h:9,
from arch/arc/include/asm/irqflags.h:13,
from include/linux/irqflags.h:18,
from include/linux/spinlock.h:59,
from include/linux/sched.h:37,
from include/linux/delay.h:13,
from include/linux/usb.h:15,
from sound/usb/clock.c:9:
arch/arc/include/asm/arcregs.h:155: note: this is the location of the previous definition
#define PAGES_TO_MB(n_pages) (PAGES_TO_KB(n_pages) >> 10)
during RTL pass: mach
sound/usb/clock.c: In function '__uac_clock_find_source':
sound/usb/clock.c:435:1: internal compiler error: in arc_ifcvt, at config/arc/arc.c:9110
}
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
--
In file included from include/sound/pcm.h:15,
from pcm.c:14:
>> include/linux/mm.h:78: warning: "PAGES_TO_MB" redefined
#define PAGES_TO_MB(pages) ((pages) >> (20 - PAGE_SHIFT))
In file included from arch/arc/include/asm/irqflags-arcv2.h:9,
from arch/arc/include/asm/irqflags.h:13,
from include/linux/irqflags.h:18,
from include/linux/spinlock.h:59,
from include/linux/mmzone.h:8,
from include/linux/gfp.h:7,
from include/linux/slab.h:16,
from pcm.c:6:
arch/arc/include/asm/arcregs.h:155: note: this is the location of the previous definition
#define PAGES_TO_MB(n_pages) (PAGES_TO_KB(n_pages) >> 10)
during RTL pass: mach
pcm.c: In function 'retire_capture_urb':
pcm.c:1390:1: internal compiler error: in arc_ifcvt, at config/arc/arc.c:9110
}
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
--
In file included from include/sound/pcm.h:15,
from quirks.c:15:
>> include/linux/mm.h:78: warning: "PAGES_TO_MB" redefined
#define PAGES_TO_MB(pages) ((pages) >> (20 - PAGE_SHIFT))
In file included from arch/arc/include/asm/irqflags-arcv2.h:9,
from arch/arc/include/asm/irqflags.h:13,
from include/linux/irqflags.h:18,
from include/linux/spinlock.h:59,
from include/linux/mmzone.h:8,
from include/linux/gfp.h:7,
from include/linux/slab.h:16,
from quirks.c:6:
arch/arc/include/asm/arcregs.h:155: note: this is the location of the previous definition
#define PAGES_TO_MB(n_pages) (PAGES_TO_KB(n_pages) >> 10)
during RTL pass: mach
quirks.c: In function 'snd_usb_apply_boot_quirk':
quirks.c:1675:1: internal compiler error: in arc_ifcvt, at config/arc/arc.c:9110
}
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
--
In file included from include/sound/pcm.h:15,
from clock.c:16:
>> include/linux/mm.h:78: warning: "PAGES_TO_MB" redefined
#define PAGES_TO_MB(pages) ((pages) >> (20 - PAGE_SHIFT))
In file included from arch/arc/include/asm/irqflags-arcv2.h:9,
from arch/arc/include/asm/irqflags.h:13,
from include/linux/irqflags.h:18,
from include/linux/spinlock.h:59,
from include/linux/sched.h:37,
from include/linux/delay.h:13,
from include/linux/usb.h:15,
from clock.c:9:
arch/arc/include/asm/arcregs.h:155: note: this is the location of the previous definition
#define PAGES_TO_MB(n_pages) (PAGES_TO_KB(n_pages) >> 10)
during RTL pass: mach
clock.c: In function '__uac_clock_find_source':
clock.c:435:1: internal compiler error: in arc_ifcvt, at config/arc/arc.c:9110
}
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
--
In file included from arch/arc/kernel/asm-offsets.c:7:
>> include/linux/mm.h:78: warning: "PAGES_TO_MB" redefined
#define PAGES_TO_MB(pages) ((pages) >> (20 - PAGE_SHIFT))
In file included from arch/arc/include/asm/irqflags-arcv2.h:9,
from arch/arc/include/asm/irqflags.h:13,
from include/linux/irqflags.h:18,
from include/linux/spinlock.h:59,
from include/linux/sched.h:37,
from arch/arc/kernel/asm-offsets.c:6:
arch/arc/include/asm/arcregs.h:155: note: this is the location of the previous definition
#define PAGES_TO_MB(n_pages) (PAGES_TO_KB(n_pages) >> 10)
vim +/PAGES_TO_MB +78 include/linux/mm.h
71
72 /*
73 * Convert between pages and MB
74 * 20 is the shift for 1MB (2^20 = 1MB)
75 * PAGE_SHIFT is the shift for page size (e.g., 12 for 4KB pages)
76 * So (20 - PAGE_SHIFT) converts between pages and MB
77 */
> 78 #define PAGES_TO_MB(pages) ((pages) >> (20 - PAGE_SHIFT))
79 #define MB_TO_PAGES(mb) ((mb) << (20 - PAGE_SHIFT))
80
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2025-08-22 10:26 UTC|newest]
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