tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git pending-fixes head: 0b86d65557b6f9fb73ce357f14e0f22e9f47a072 commit: fad84e39f116035ae8d550c6020107b8ac113b45 [34/128] ARC: boot log: eliminate struct cpuinfo_arc #4: boot log per ISA config: arc-randconfig-001-20230822 (https://download.01.org/0day-ci/archive/20230822/202308221549.XKufWEWp-lkp@xxxxxxxxx/config) compiler: arceb-elf-gcc (GCC) 13.2.0 reproduce: (https://download.01.org/0day-ci/archive/20230822/202308221549.XKufWEWp-lkp@xxxxxxxxx/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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202308221549.XKufWEWp-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): arch/arc/kernel/setup.c: In function 'arcompact_mumbojumbo': >> arch/arc/kernel/setup.c:82:13: warning: variable 'atomic' set but not used [-Wunused-but-set-variable] 82 | int atomic = 0, be, present; | ^~~~~~ vim +/atomic +82 arch/arc/kernel/setup.c 74 75 static int 76 arcompact_mumbojumbo(int c, struct cpuinfo_arc *info, char *buf, int len) 77 { 78 int n = 0; 79 #ifdef CONFIG_ISA_ARCOMPACT 80 char *cpu_nm, *isa_nm = "ARCompact"; 81 struct bcr_fp_arcompact fpu_sp, fpu_dp; > 82 int atomic = 0, be, present; 83 int bpu_full, bpu_cache, bpu_pred; 84 struct bcr_bpu_arcompact bpu; 85 struct bcr_iccm_arcompact iccm; 86 struct bcr_dccm_arcompact dccm; 87 struct bcr_generic isa; 88 89 READ_BCR(ARC_REG_ISA_CFG_BCR, isa); 90 91 if (!isa.ver) /* ISA BCR absent, use Kconfig info */ 92 atomic = IS_ENABLED(CONFIG_ARC_HAS_LLSC); 93 else { 94 /* ARC700_BUILD only has 2 bits of isa info */ 95 atomic = isa.info & 1; 96 } 97 98 be = IS_ENABLED(CONFIG_CPU_BIG_ENDIAN); 99 100 if (info->arcver < 0x34) 101 cpu_nm = "ARC750"; 102 else 103 cpu_nm = "ARC770"; 104 105 n += scnprintf(buf + n, len - n, "processor [%d]\t: %s (%s ISA) %s\n", 106 c, cpu_nm, isa_nm, IS_AVAIL1(be, "[Big-Endian]")); 107 108 READ_BCR(ARC_REG_FP_BCR, fpu_sp); 109 READ_BCR(ARC_REG_DPFP_BCR, fpu_dp); 110 111 if (fpu_sp.ver | fpu_dp.ver) 112 n += scnprintf(buf + n, len - n, "FPU\t\t: %s%s\n", 113 IS_AVAIL1(fpu_sp.ver, "SP "), 114 IS_AVAIL1(fpu_dp.ver, "DP ")); 115 116 READ_BCR(ARC_REG_BPU_BCR, bpu); 117 bpu_full = bpu.fam ? 1 : 0; 118 bpu_cache = 256 << (bpu.ent - 1); 119 bpu_pred = 256 << (bpu.ent - 1); 120 121 n += scnprintf(buf + n, len - n, 122 "BPU\t\t: %s%s match, cache:%d, Predict Table:%d\n", 123 IS_AVAIL1(bpu_full, "full"), 124 IS_AVAIL1(!bpu_full, "partial"), 125 bpu_cache, bpu_pred); 126 127 READ_BCR(ARC_REG_ICCM_BUILD, iccm); 128 if (iccm.ver) { 129 info->iccm.sz = 4096 << iccm.sz; /* 8K to 512K */ 130 info->iccm.base = iccm.base << 16; 131 } 132 133 READ_BCR(ARC_REG_DCCM_BUILD, dccm); 134 if (dccm.ver) { 135 unsigned long base; 136 info->dccm.sz = 2048 << dccm.sz; /* 2K to 256K */ 137 138 base = read_aux_reg(ARC_REG_DCCM_BASE_BUILD); 139 info->dccm.base = base & ~0xF; 140 } 141 142 /* ARCompact ISA specific sanity checks */ 143 present = fpu_dp.ver; /* SP has no arch visible regs */ 144 CHK_OPT_STRICT(CONFIG_ARC_FPU_SAVE_RESTORE, present); 145 #endif 146 return n; 147 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
