linux-kernel - [ammarfaizi2-block:dhowells/linux-fs/netfs-maple 19/44] lib/maple_tree.c:76:28: warning: unused variable 'mt

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Date:   Sat, 23 Apr 2022 09:04:33 +0800
From:   kernel test robot <lkp@...el.com>
To:     "Liam R. Howlett" <Liam.Howlett@...cle.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        GNU/Weeb Mailing List <gwml@...r.gnuweeb.org>,
        linux-kernel@...r.kernel.org, David Howells <dhowells@...hat.com>,
        "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux Memory Management List <linux-mm@...ck.org>
Subject: [ammarfaizi2-block:dhowells/linux-fs/netfs-maple 19/44]
 lib/maple_tree.c:76:28: warning: unused variable 'mt_max'

tree:   https://github.com/ammarfaizi2/linux-block dhowells/linux-fs/netfs-maple
head:   931e50676c6598d0eda1954ead465519ff91874d
commit: 6c45be03ed6456efda93c06956d586eecae0e51a [19/44] Maple Tree: add new data structure
config: hexagon-randconfig-r012-20220422 (https://download.01.org/0day-ci/archive/20220423/202204230954.HDq6NK6c-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 5bd87350a5ae429baf8f373cb226a57b62f87280)
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
        # https://github.com/ammarfaizi2/linux-block/commit/6c45be03ed6456efda93c06956d586eecae0e51a
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block dhowells/linux-fs/netfs-maple
        git checkout 6c45be03ed6456efda93c06956d586eecae0e51a
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash

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

All warnings (new ones prefixed by >>):

>> lib/maple_tree.c:76:28: warning: unused variable 'mt_max' [-Wunused-const-variable]
   static const unsigned long mt_max[] = {
                              ^
   lib/maple_tree.c:322:20: warning: unused function 'mte_set_full' [-Wunused-function]
   static inline void mte_set_full(const struct maple_enode *node)
                      ^
   lib/maple_tree.c:327:20: warning: unused function 'mte_clear_full' [-Wunused-function]
   static inline void mte_clear_full(const struct maple_enode *node)
                      ^
>> lib/maple_tree.c:4199:20: warning: stack frame size (1096) exceeds limit (1024) in 'mas_wr_modify' [-Wframe-larger-than]
   static inline void mas_wr_modify(struct ma_wr_state *wr_mas)
                      ^
   4 warnings generated.


vim +/mt_max +76 lib/maple_tree.c

    75	
  > 76	static const unsigned long mt_max[] = {
    77		[maple_dense]		= MAPLE_NODE_SLOTS,
    78		[maple_leaf_64]		= ULONG_MAX,
    79		[maple_range_64]	= ULONG_MAX,
    80		[maple_arange_64]	= ULONG_MAX,
    81	};
    82	#define mt_node_max(x) mt_max[mte_node_type(x)]
    83	

-- 
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https://01.org/lkp