Re: [PATCH 3/9] lib: zstd: Upgrade to latest upstream zstd version 1.4.6

[kernel test robot]

Hi Nick,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on kdave/for-next]
[also build test WARNING on f2fs/dev-test linus/master v5.9-rc5 next-20200915]
[cannot apply to cryptodev/master crypto/master squashfs/master]
[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]

url:    https://github.com/0day-ci/linux/commits/Nick-Terrell/Update-to-zstd-1-4-6/20200916-114901
base:   https://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux.git for-next
config: h8300-randconfig-r024-20200916 (attached as .config)
compiler: h8300-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=h8300 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

   In file included from lib/zstd/compress/zstd_compress_internal.h:21,
                    from lib/zstd/compress/zstd_compress.c:22:
   lib/zstd/compress/../common/zstd_internal.h:193:18: warning: 'ML_bits' defined but not used [-Wunused-const-variable=]
     193 | static const U32 ML_bits[MaxML+1] = { 0, 0, 0, 0, 0, 0, 0, 0,
         |                  ^~~~~~~
   lib/zstd/compress/../common/zstd_internal.h:180:18: warning: 'LL_bits' defined but not used [-Wunused-const-variable=]
     180 | static const U32 LL_bits[MaxLL+1] = { 0, 0, 0, 0, 0, 0, 0, 0,
         |                  ^~~~~~~
   In file included from lib/zstd/compress/zstd_compress_internal.h:21,
                    from lib/zstd/compress/zstd_compress.c:22:
   lib/zstd/compress/../common/zstd_internal.h:148:21: warning: 'ZSTD_did_fieldSize' defined but not used [-Wunused-const-variable=]
     148 | static const size_t ZSTD_did_fieldSize[4] = { 0, 1, 2, 4 };
         |                     ^~~~~~~~~~~~~~~~~~
   lib/zstd/compress/../common/zstd_internal.h:147:21: warning: 'ZSTD_fcs_fieldSize' defined but not used [-Wunused-const-variable=]
     147 | static const size_t ZSTD_fcs_fieldSize[4] = { 0, 2, 4, 8 };
         |                     ^~~~~~~~~~~~~~~~~~
   lib/zstd/compress/zstd_compress.c: In function 'ZSTD_compress':
>> lib/zstd/compress/zstd_compress.c:3252:1: warning: the frame size of 1084 bytes is larger than 1024 bytes [-Wframe-larger-than=]
    3252 | }
         | ^
--
   In file included from lib/zstd/compress/zstd_compress_superblock.c:16:
   lib/zstd/compress/../common/zstd_internal.h:148:21: warning: 'ZSTD_did_fieldSize' defined but not used [-Wunused-const-variable=]
     148 | static const size_t ZSTD_did_fieldSize[4] = { 0, 1, 2, 4 };
         |                     ^~~~~~~~~~~~~~~~~~
   lib/zstd/compress/../common/zstd_internal.h:147:21: warning: 'ZSTD_fcs_fieldSize' defined but not used [-Wunused-const-variable=]
     147 | static const size_t ZSTD_fcs_fieldSize[4] = { 0, 2, 4, 8 };
         |                     ^~~~~~~~~~~~~~~~~~
   lib/zstd/compress/../common/zstd_internal.h:133:18: warning: 'repStartValue' defined but not used [-Wunused-const-variable=]
     133 | static const U32 repStartValue[ZSTD_REP_NUM] = { 1, 4, 8 };
         |                  ^~~~~~~~~~~~~
   In file included from lib/zstd/compress/zstd_compress_superblock.h:18,
                    from lib/zstd/compress/zstd_compress_superblock.c:14:
   include/linux/zstd.h:1377:29: warning: 'ZSTD_defaultCMem' defined but not used [-Wunused-const-variable=]
    1377 | static ZSTD_customMem const ZSTD_defaultCMem = { NULL, NULL, NULL };  /**< this constant defers to stdlib's functions */
         |                             ^~~~~~~~~~~~~~~~
   lib/zstd/compress/zstd_compress_superblock.c: In function 'ZSTD_compressSuperBlock':
>> lib/zstd/compress/zstd_compress_superblock.c:849:1: warning: the frame size of 1068 bytes is larger than 1024 bytes [-Wframe-larger-than=]
     849 | }
         | ^

# https://github.com/0day-ci/linux/commit/55f5799ba0242ead6cde3f9cd4d04b2a19384d37
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Nick-Terrell/Update-to-zstd-1-4-6/20200916-114901
git checkout 55f5799ba0242ead6cde3f9cd4d04b2a19384d37
vim +3252 lib/zstd/compress/zstd_compress.c

  3241	
  3242	size_t ZSTD_compress(void* dst, size_t dstCapacity,
  3243	               const void* src, size_t srcSize,
  3244	                     int compressionLevel)
  3245	{
  3246	    size_t result;
  3247	    ZSTD_CCtx ctxBody;
  3248	    ZSTD_initCCtx(&ctxBody, ZSTD_defaultCMem);
  3249	    result = ZSTD_compressCCtx(&ctxBody, dst, dstCapacity, src, srcSize, compressionLevel);
  3250	    ZSTD_freeCCtxContent(&ctxBody);   /* can't free ctxBody itself, as it's on stack; free only heap content */
  3251	    return result;
> 3252	}
  3253	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

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