[PATCH 1/2] block: track per-node I/O latency
kernel test robot
lkp at intel.com
Wed Apr 3 19:55:25 PDT 2024
Hi Hannes,
kernel test robot noticed the following build warnings:
[auto build test WARNING on axboe-block/for-next]
[also build test WARNING on linus/master v6.9-rc2 next-20240403]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Hannes-Reinecke/block-track-per-node-I-O-latency/20240403-222254
base: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next
patch link: https://lore.kernel.org/r/20240403141756.88233-2-hare%40kernel.org
patch subject: [PATCH 1/2] block: track per-node I/O latency
config: s390-allnoconfig (https://download.01.org/0day-ci/archive/20240404/202404041045.bLSpHDFH-lkp@intel.com/config)
compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 546dc2245ffc4cccd0b05b58b7a5955e355a3b27)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240404/202404041045.bLSpHDFH-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 at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202404041045.bLSpHDFH-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from block/bdev.c:9:
In file included from include/linux/mm.h:2208:
include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
In file included from block/bdev.c:15:
In file included from include/linux/blk-integrity.h:5:
In file included from include/linux/blk-mq.h:8:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:78:
include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
547 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
560 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
| ^
include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
102 | #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
| ^
In file included from block/bdev.c:15:
In file included from include/linux/blk-integrity.h:5:
In file included from include/linux/blk-mq.h:8:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:78:
include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
573 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
| ^
include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
115 | #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
| ^
In file included from block/bdev.c:15:
In file included from include/linux/blk-integrity.h:5:
In file included from include/linux/blk-mq.h:8:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:78:
include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
584 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
594 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
604 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:692:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
692 | readsb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:700:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
700 | readsw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:708:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
708 | readsl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:717:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
717 | writesb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:726:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
726 | writesw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:735:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
735 | writesl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
In file included from block/bdev.c:15:
In file included from include/linux/blk-integrity.h:5:
>> include/linux/blk-mq.h:1242:5: warning: no previous prototype for function 'blk_nlat_latency' [-Wmissing-prototypes]
1242 | u64 blk_nlat_latency(struct gendisk *disk, int node) { return 0; }
| ^
include/linux/blk-mq.h:1242:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
1242 | u64 blk_nlat_latency(struct gendisk *disk, int node) { return 0; }
| ^
| static
include/linux/blk-mq.h:1243:15: error: unknown type name 'in'
1243 | static inline in blk_nlat_init(struct gendisk *disk) { return -ENOTSUPP; }
| ^
14 warnings and 1 error generated.
vim +/blk_nlat_latency +1242 include/linux/blk-mq.h
1233
1234 #ifdef CONFIG_BLK_NODE_LATENCY
1235 int blk_nlat_enable(struct gendisk *disk);
1236 void blk_nlat_disable(struct gendisk *disk);
1237 u64 blk_nlat_latency(struct gendisk *disk, int node);
1238 int blk_nlat_init(struct gendisk *disk);
1239 #else
1240 static inline int blk_nlat_enable(struct gendisk *disk) { return 0; }
1241 static inline void blk_nlat_disable(struct gendisk *disk) {}
> 1242 u64 blk_nlat_latency(struct gendisk *disk, int node) { return 0; }
--
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