From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============2668575784862728187==" MIME-Version: 1.0 From: kernel test robot Subject: drivers/scsi/ufs/ufshpb.c:54:17: warning: Access to field 'is_last' results in a dereference of an undefined pointer value (loaded from variable 'srgn') [clang-analyzer-core.NullDereference] Date: Sun, 28 Nov 2021 00:52:50 +0800 Message-ID: <202111280002.PRuCKm9I-lkp@intel.com> List-Id: To: kbuild@lists.01.org --===============2668575784862728187== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable CC: llvm(a)lists.linux.dev CC: kbuild-all(a)lists.01.org CC: linux-kernel(a)vger.kernel.org TO: Daejun Park CC: "Martin K. Petersen" CC: "Greg Kroah-Hartman" CC: Bart Van Assche CC: Can Guo CC: Bean Huo CC: Stanley Chu tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git = master head: c5c17547b778975b3d83a73c8d84e8fb5ecf3ba5 commit: f02bc9754a6887bf5e286889265d24ce5e3b1952 scsi: ufs: ufshpb: Introdu= ce Host Performance Buffer feature date: 4 months ago :::::: branch date: 20 hours ago :::::: commit date: 4 months ago config: riscv-randconfig-c006-20211126 (https://download.01.org/0day-ci/arc= hive/20211128/202111280002.PRuCKm9I-lkp(a)intel.com/config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 5162b5= 58d8c0b542e752b037e72a69d5fd51eb1e) reproduce (this is a W=3D1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/= make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.gi= t/commit/?id=3Df02bc9754a6887bf5e286889265d24ce5e3b1952 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/gi= t/torvalds/linux.git git fetch --no-tags linus master git checkout f02bc9754a6887bf5e286889265d24ce5e3b1952 # save the config file to linux build tree COMPILER_INSTALL_PATH=3D$HOME/0day COMPILER=3Dclang make.cross ARCH= =3Driscv clang-analyzer = If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot clang-analyzer warnings: (new ones prefixed by >>) ^~~~~~~~~~~~~~~~~~ kernel/torture.c:342:2: note: Loop condition is false. Execution continu= es on line 344 for_each_online_cpu(cpu) ^ include/linux/cpumask.h:789:36: note: expanded from macro 'for_each_onli= ne_cpu' #define for_each_online_cpu(cpu) for_each_cpu((cpu), cpu_online_mask) ^ include/linux/cpumask.h:241:2: note: expanded from macro 'for_each_cpu' for ((cpu) =3D -1; \ ^ kernel/torture.c:346:6: note: 'maxcpu' is not equal to 0 if (maxcpu =3D=3D 0) { ^~~~~~ kernel/torture.c:346:2: note: Taking false branch if (maxcpu =3D=3D 0) { ^ kernel/torture.c:351:6: note: Assuming 'onoff_holdoff' is > 0 if (onoff_holdoff > 0) { ^~~~~~~~~~~~~~~~~ kernel/torture.c:351:2: note: Taking true branch if (onoff_holdoff > 0) { ^ kernel/torture.c:352:3: note: Assuming 'verbose' is 0 VERBOSE_TOROUT_STRING("torture_onoff begin holdoff"); ^ include/linux/torture.h:36:6: note: expanded from macro 'VERBOSE_TOROUT_= STRING' if (verbose) { = \ ^~~~~~~ kernel/torture.c:352:3: note: Taking false branch VERBOSE_TOROUT_STRING("torture_onoff begin holdoff"); ^ include/linux/torture.h:36:2: note: expanded from macro 'VERBOSE_TOROUT_= STRING' if (verbose) { = \ ^ kernel/torture.c:352:3: note: Loop condition is false. Exiting loop VERBOSE_TOROUT_STRING("torture_onoff begin holdoff"); ^ include/linux/torture.h:34:34: note: expanded from macro 'VERBOSE_TOROUT= _STRING' #define VERBOSE_TOROUT_STRING(s) \ ^ kernel/torture.c:354:3: note: Assuming 'verbose' is 0 VERBOSE_TOROUT_STRING("torture_onoff end holdoff"); ^ include/linux/torture.h:36:6: note: expanded from macro 'VERBOSE_TOROUT_= STRING' if (verbose) { = \ ^~~~~~~ kernel/torture.c:354:3: note: Taking false branch VERBOSE_TOROUT_STRING("torture_onoff end holdoff"); ^ include/linux/torture.h:36:2: note: expanded from macro 'VERBOSE_TOROUT_= STRING' if (verbose) { = \ ^ kernel/torture.c:354:3: note: Loop condition is false. Exiting loop VERBOSE_TOROUT_STRING("torture_onoff end holdoff"); ^ include/linux/torture.h:34:34: note: expanded from macro 'VERBOSE_TOROUT= _STRING' #define VERBOSE_TOROUT_STRING(s) \ ^ kernel/torture.c:356:10: note: Calling 'torture_must_stop' while (!torture_must_stop()) { ^~~~~~~~~~~~~~~~~~~ kernel/torture.c:889:9: note: Left side of '||' is false return torture_must_stop_irq() || kthread_should_stop(); ^ kernel/torture.c:889:36: note: Value assigned to 'disable_onoff_at_boot'= , which participates in a condition later return torture_must_stop_irq() || kthread_should_stop(); ^~~~~~~~~~~~~~~~~~~~~ kernel/torture.c:889:2: note: Returning value, which participates in a c= ondition later return torture_must_stop_irq() || kthread_should_stop(); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ kernel/torture.c:356:10: note: Returning from 'torture_must_stop' while (!torture_must_stop()) { ^~~~~~~~~~~~~~~~~~~ kernel/torture.c:356:9: note: Assuming the condition is true while (!torture_must_stop()) { ^~~~~~~~~~~~~~~~~~~~ kernel/torture.c:356:2: note: Loop condition is true. Entering loop body while (!torture_must_stop()) { ^ kernel/torture.c:357:7: note: Assuming 'disable_onoff_at_boot' is false if (disable_onoff_at_boot && !rcu_inkernel_boot_has_ende= d()) { ^~~~~~~~~~~~~~~~~~~~~ kernel/torture.c:357:29: note: Left side of '&&' is false if (disable_onoff_at_boot && !rcu_inkernel_boot_has_ende= d()) { ^ kernel/torture.c:361:38: note: Division by zero cpu =3D (torture_random(&rand) >> 4) % (maxcpu + 1); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~ Suppressed 6 warnings (6 in non-user code). Use -header-filter=3D.* to display errors from all non-system headers. U= se -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=3D.* to display errors from all non-system headers. U= se -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=3D.* to display errors from all non-system headers. U= se -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=3D.* to display errors from all non-system headers. U= se -system-headers to display errors from system headers as well. 13 warnings generated. >> drivers/scsi/ufs/ufshpb.c:54:17: warning: Access to field 'is_last' resu= lts in a dereference of an undefined pointer value (loaded from variable 's= rgn') [clang-analyzer-core.NullDereference] srgn->is_last =3D true; ^ drivers/scsi/ufs/ufshpb.c:475:6: note: Assuming 'lun' is < field 'max_lu= _supported' if (lun >=3D hba->dev_info.max_lu_supported) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/ufs/ufshpb.c:475:2: note: Taking false branch if (lun >=3D hba->dev_info.max_lu_supported) ^ drivers/scsi/ufs/ufshpb.c:479:6: note: 'ret' is 0 if (ret) ^~~ drivers/scsi/ufs/ufshpb.c:479:2: note: Taking false branch if (ret) ^ drivers/scsi/ufs/ufshpb.c:482:8: note: Calling 'ufshpb_alloc_hpb_lu' hpb =3D ufshpb_alloc_hpb_lu(hba, lun, &hba->ufshpb_dev, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/ufs/ufshpb.c:257:6: note: Assuming 'hpb' is non-null if (!hpb) ^~~~ drivers/scsi/ufs/ufshpb.c:257:2: note: Taking false branch if (!hpb) ^ drivers/scsi/ufs/ufshpb.c:264:8: note: Calling 'ufshpb_lu_hpb_init' ret =3D ufshpb_lu_hpb_init(hba, hpb); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/ufs/ufshpb.c:241:8: note: Calling 'ufshpb_alloc_region_tbl' ret =3D ufshpb_alloc_region_tbl(hba, hpb); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/ufs/ufshpb.c:120:6: note: Assuming 'rgn_table' is non-null if (!rgn_table) ^~~~~~~~~~ drivers/scsi/ufs/ufshpb.c:120:2: note: Taking false branch if (!rgn_table) ^ drivers/scsi/ufs/ufshpb.c:125:20: note: Assuming 'rgn_idx' is < field 'r= gns_per_lu' for (rgn_idx =3D 0; rgn_idx < hpb->rgns_per_lu; rgn_idx++) { ^~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/ufs/ufshpb.c:125:2: note: Loop condition is true. Entering= loop body for (rgn_idx =3D 0; rgn_idx < hpb->rgns_per_lu; rgn_idx++) { ^ drivers/scsi/ufs/ufshpb.c:132:7: note: Assuming the condition is true if (rgn_idx =3D=3D hpb->rgns_per_lu - 1) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/ufs/ufshpb.c:132:3: note: Taking true branch if (rgn_idx =3D=3D hpb->rgns_per_lu - 1) { ^ drivers/scsi/ufs/ufshpb.c:139:7: note: 'ret' is 0 if (ret) ^~~ drivers/scsi/ufs/ufshpb.c:139:3: note: Taking false branch if (ret) ^ drivers/scsi/ufs/ufshpb.c:141:3: note: Calling 'ufshpb_init_subregion_tb= l' ufshpb_init_subregion_tbl(hpb, rgn, last_srgn); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/ufs/ufshpb.c:43:2: note: 'srgn' declared without an initial= value struct ufshpb_subregion *srgn; ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/ufs/ufshpb.c:45:21: note: Assuming 'srgn_idx' is >=3D field= 'srgn_cnt' for (srgn_idx =3D 0; srgn_idx < rgn->srgn_cnt; srgn_idx++) { ^~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/ufs/ufshpb.c:45:2: note: Loop condition is false. Execution= continues on line 53 for (srgn_idx =3D 0; srgn_idx < rgn->srgn_cnt; srgn_idx++) { ^ drivers/scsi/ufs/ufshpb.c:53:15: note: 'last' is true if (unlikely(last && hpb->last_srgn_entries)) ^ include/linux/compiler.h:78:42: note: expanded from macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ drivers/scsi/ufs/ufshpb.c:53:15: note: Left side of '&&' is true if (unlikely(last && hpb->last_srgn_entries)) ^ drivers/scsi/ufs/ufshpb.c:53:6: note: Assuming the condition is false if (unlikely(last && hpb->last_srgn_entries)) ^ include/linux/compiler.h:78:40: note: expanded from macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^~~~ drivers/scsi/ufs/ufshpb.c:53:2: note: Taking true branch if (unlikely(last && hpb->last_srgn_entries)) ^ drivers/scsi/ufs/ufshpb.c:54:17: note: Access to field 'is_last' results= in a dereference of an undefined pointer value (loaded from variable 'srgn= ') srgn->is_last =3D true; ~~~~ ^ >> drivers/scsi/ufs/ufshpb.c:104:22: warning: Division by zero [clang-analy= zer-core.DivideZero] hpb->srgns_per_lu =3D DIV_ROUND_UP(hpb_lu_info->num_blocks, ^ include/linux/math.h:36:22: note: expanded from macro 'DIV_ROUND_UP' #define DIV_ROUND_UP __KERNEL_DIV_ROUND_UP ^ include/uapi/linux/const.h:34:54: note: expanded from macro '__KERNEL_DI= V_ROUND_UP' #define __KERNEL_DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d)) ~~~~~~~~~~~~~~~~^~~~~ drivers/scsi/ufs/ufshpb.c:78:23: note: Assuming field 'num_pinned' is 0 hpb->lu_pinned_end =3D hpb_lu_info->num_pinned ? ^~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/ufs/ufshpb.c:78:23: note: '?' condition is false drivers/scsi/ufs/ufshpb.c:84:2: note: Left side of '&&' is false do_div(rgn_mem_size, HPB_ENTRY_BLOCK_SIZE); ^ include/asm-generic/div64.h:229:35: note: expanded from macro 'do_div' if (__builtin_constant_p(__base) && \ ^ drivers/scsi/ufs/ufshpb.c:84:2: note: 4 is >=3D 4 do_div(rgn_mem_size, HPB_ENTRY_BLOCK_SIZE); ^ include/asm-generic/div64.h:233:13: note: expanded from macro 'do_div' } else if (__div64_const32_is_OK && \ ^~~~~~~~~~~~~~~~~~~~~ include/asm-generic/div64.h:68:32: note: expanded from macro '__div64_co= nst32_is_OK' #define __div64_const32_is_OK (__GNUC__ >=3D 4) ^~~~~~~~ note: expanded from here drivers/scsi/ufs/ufshpb.c:84:2: note: Left side of '&&' is true do_div(rgn_mem_size, HPB_ENTRY_BLOCK_SIZE); ^ include/asm-generic/div64.h:233:13: note: expanded from macro 'do_div' } else if (__div64_const32_is_OK && \ ^ include/asm-generic/div64.h:68:31: note: expanded from macro '__div64_co= nst32_is_OK' #define __div64_const32_is_OK (__GNUC__ >=3D 4) ^ drivers/scsi/ufs/ufshpb.c:84:2: note: Left side of '&&' is false do_div(rgn_mem_size, HPB_ENTRY_BLOCK_SIZE); ^ include/asm-generic/div64.h:234:35: note: expanded from macro 'do_div' __builtin_constant_p(__base) && \ ^ drivers/scsi/ufs/ufshpb.c:84:2: note: Assuming the condition is false do_div(rgn_mem_size, HPB_ENTRY_BLOCK_SIZE); ^ include/asm-generic/div64.h:241:20: note: expanded from macro 'do_div' } else if (likely(((n) >> 32) =3D=3D 0)) { \ ~~~~~~~^~~~~~~~~~~~~~~~~ include/linux/compiler.h:77:40: note: expanded from macro 'likely' # define likely(x) __builtin_expect(!!(x), 1) ^ drivers/scsi/ufs/ufshpb.c:84:2: note: Taking false branch do_div(rgn_mem_size, HPB_ENTRY_BLOCK_SIZE); ^ include/asm-generic/div64.h:241:9: note: expanded from macro 'do_div' } else if (likely(((n) >> 32) =3D=3D 0)) { \ ^ drivers/scsi/ufs/ufshpb.c:89:2: note: Left side of '&&' is false do_div(tmp, HPB_ENTRY_SIZE); ^ include/asm-generic/div64.h:229:35: note: expanded from macro 'do_div' if (__builtin_constant_p(__base) && \ ^ drivers/scsi/ufs/ufshpb.c:89:2: note: 4 is >=3D 4 do_div(tmp, HPB_ENTRY_SIZE); ^ include/asm-generic/div64.h:233:13: note: expanded from macro 'do_div' } else if (__div64_const32_is_OK && \ ^~~~~~~~~~~~~~~~~~~~~ include/asm-generic/div64.h:68:32: note: expanded from macro '__div64_co= nst32_is_OK' #define __div64_const32_is_OK (__GNUC__ >=3D 4) ^~~~~~~~ note: expanded from here drivers/scsi/ufs/ufshpb.c:89:2: note: Left side of '&&' is true do_div(tmp, HPB_ENTRY_SIZE); ^ include/asm-generic/div64.h:233:13: note: expanded from macro 'do_div' } else if (__div64_const32_is_OK && \ ^ include/asm-generic/div64.h:68:31: note: expanded from macro '__div64_co= nst32_is_OK' #define __div64_const32_is_OK (__GNUC__ >=3D 4) ^ drivers/scsi/ufs/ufshpb.c:89:2: note: Left side of '&&' is false do_div(tmp, HPB_ENTRY_SIZE); ^ include/asm-generic/div64.h:234:35: note: expanded from macro 'do_div' __builtin_constant_p(__base) && \ ^ drivers/scsi/ufs/ufshpb.c:89:2: note: Assuming the condition is false do_div(tmp, HPB_ENTRY_SIZE); ^ include/asm-generic/div64.h:241:20: note: expanded from macro 'do_div' } else if (likely(((n) >> 32) =3D=3D 0)) { \ ~~~~~~~^~~~~~~~~~~~~~~~~ include/linux/compiler.h:77:40: note: expanded from macro 'likely' # define likely(x) __builtin_expect(!!(x), 1) ^ drivers/scsi/ufs/ufshpb.c:89:2: note: Taking false branch do_div(tmp, HPB_ENTRY_SIZE); vim +54 drivers/scsi/ufs/ufshpb.c f02bc9754a6887 Daejun Park 2021-07-12 38 = f02bc9754a6887 Daejun Park 2021-07-12 39 static void ufshpb_init_subregi= on_tbl(struct ufshpb_lu *hpb, f02bc9754a6887 Daejun Park 2021-07-12 40 struct ufshpb_region = *rgn, bool last) f02bc9754a6887 Daejun Park 2021-07-12 41 { f02bc9754a6887 Daejun Park 2021-07-12 42 int srgn_idx; f02bc9754a6887 Daejun Park 2021-07-12 43 struct ufshpb_subregion *srgn; f02bc9754a6887 Daejun Park 2021-07-12 44 = f02bc9754a6887 Daejun Park 2021-07-12 45 for (srgn_idx =3D 0; srgn_idx = < rgn->srgn_cnt; srgn_idx++) { f02bc9754a6887 Daejun Park 2021-07-12 46 srgn =3D rgn->srgn_tbl + srgn= _idx; f02bc9754a6887 Daejun Park 2021-07-12 47 = f02bc9754a6887 Daejun Park 2021-07-12 48 srgn->rgn_idx =3D rgn->rgn_id= x; f02bc9754a6887 Daejun Park 2021-07-12 49 srgn->srgn_idx =3D srgn_idx; f02bc9754a6887 Daejun Park 2021-07-12 50 srgn->srgn_state =3D HPB_SRGN= _UNUSED; f02bc9754a6887 Daejun Park 2021-07-12 51 } f02bc9754a6887 Daejun Park 2021-07-12 52 = f02bc9754a6887 Daejun Park 2021-07-12 @53 if (unlikely(last && hpb->last= _srgn_entries)) f02bc9754a6887 Daejun Park 2021-07-12 @54 srgn->is_last =3D true; f02bc9754a6887 Daejun Park 2021-07-12 55 } f02bc9754a6887 Daejun Park 2021-07-12 56 = f02bc9754a6887 Daejun Park 2021-07-12 57 static int ufshpb_alloc_subregi= on_tbl(struct ufshpb_lu *hpb, f02bc9754a6887 Daejun Park 2021-07-12 58 struct ufshpb_region = *rgn, int srgn_cnt) f02bc9754a6887 Daejun Park 2021-07-12 59 { f02bc9754a6887 Daejun Park 2021-07-12 60 rgn->srgn_tbl =3D kvcalloc(srg= n_cnt, sizeof(struct ufshpb_subregion), f02bc9754a6887 Daejun Park 2021-07-12 61 GFP_KERNEL); f02bc9754a6887 Daejun Park 2021-07-12 62 if (!rgn->srgn_tbl) f02bc9754a6887 Daejun Park 2021-07-12 63 return -ENOMEM; f02bc9754a6887 Daejun Park 2021-07-12 64 = f02bc9754a6887 Daejun Park 2021-07-12 65 rgn->srgn_cnt =3D srgn_cnt; f02bc9754a6887 Daejun Park 2021-07-12 66 return 0; f02bc9754a6887 Daejun Park 2021-07-12 67 } f02bc9754a6887 Daejun Park 2021-07-12 68 = f02bc9754a6887 Daejun Park 2021-07-12 69 static void ufshpb_lu_parameter= _init(struct ufs_hba *hba, f02bc9754a6887 Daejun Park 2021-07-12 70 struct ufshpb_lu *hpb, f02bc9754a6887 Daejun Park 2021-07-12 71 struct ufshpb_dev_info= *hpb_dev_info, f02bc9754a6887 Daejun Park 2021-07-12 72 struct ufshpb_lu_info = *hpb_lu_info) f02bc9754a6887 Daejun Park 2021-07-12 73 { f02bc9754a6887 Daejun Park 2021-07-12 74 u32 entries_per_rgn; f02bc9754a6887 Daejun Park 2021-07-12 75 u64 rgn_mem_size, tmp; f02bc9754a6887 Daejun Park 2021-07-12 76 = f02bc9754a6887 Daejun Park 2021-07-12 77 hpb->lu_pinned_start =3D hpb_l= u_info->pinned_start; f02bc9754a6887 Daejun Park 2021-07-12 78 hpb->lu_pinned_end =3D hpb_lu_= info->num_pinned ? f02bc9754a6887 Daejun Park 2021-07-12 79 (hpb_lu_info->pinned_start + = hpb_lu_info->num_pinned - 1) f02bc9754a6887 Daejun Park 2021-07-12 80 : PINNED_NOT_SET; f02bc9754a6887 Daejun Park 2021-07-12 81 = f02bc9754a6887 Daejun Park 2021-07-12 82 rgn_mem_size =3D (1ULL << hpb_= dev_info->rgn_size) * HPB_RGN_SIZE_UNIT f02bc9754a6887 Daejun Park 2021-07-12 83 * HPB_ENTRY_SIZE; f02bc9754a6887 Daejun Park 2021-07-12 84 do_div(rgn_mem_size, HPB_ENTRY= _BLOCK_SIZE); f02bc9754a6887 Daejun Park 2021-07-12 85 hpb->srgn_mem_size =3D (1ULL <= < hpb_dev_info->srgn_size) f02bc9754a6887 Daejun Park 2021-07-12 86 * HPB_RGN_SIZE_UNIT / HPB_ENT= RY_BLOCK_SIZE * HPB_ENTRY_SIZE; f02bc9754a6887 Daejun Park 2021-07-12 87 = f02bc9754a6887 Daejun Park 2021-07-12 88 tmp =3D rgn_mem_size; f02bc9754a6887 Daejun Park 2021-07-12 89 do_div(tmp, HPB_ENTRY_SIZE); f02bc9754a6887 Daejun Park 2021-07-12 90 entries_per_rgn =3D (u32)tmp; f02bc9754a6887 Daejun Park 2021-07-12 91 hpb->entries_per_rgn_shift =3D= ilog2(entries_per_rgn); f02bc9754a6887 Daejun Park 2021-07-12 92 hpb->entries_per_rgn_mask =3D = entries_per_rgn - 1; f02bc9754a6887 Daejun Park 2021-07-12 93 = f02bc9754a6887 Daejun Park 2021-07-12 94 hpb->entries_per_srgn =3D hpb-= >srgn_mem_size / HPB_ENTRY_SIZE; f02bc9754a6887 Daejun Park 2021-07-12 95 hpb->entries_per_srgn_shift = =3D ilog2(hpb->entries_per_srgn); f02bc9754a6887 Daejun Park 2021-07-12 96 hpb->entries_per_srgn_mask =3D= hpb->entries_per_srgn - 1; f02bc9754a6887 Daejun Park 2021-07-12 97 = f02bc9754a6887 Daejun Park 2021-07-12 98 tmp =3D rgn_mem_size; f02bc9754a6887 Daejun Park 2021-07-12 99 do_div(tmp, hpb->srgn_mem_size= ); f02bc9754a6887 Daejun Park 2021-07-12 100 hpb->srgns_per_rgn =3D (int)tm= p; f02bc9754a6887 Daejun Park 2021-07-12 101 = f02bc9754a6887 Daejun Park 2021-07-12 102 hpb->rgns_per_lu =3D DIV_ROUND= _UP(hpb_lu_info->num_blocks, f02bc9754a6887 Daejun Park 2021-07-12 103 entries_per_rgn); f02bc9754a6887 Daejun Park 2021-07-12 @104 hpb->srgns_per_lu =3D DIV_ROUN= D_UP(hpb_lu_info->num_blocks, f02bc9754a6887 Daejun Park 2021-07-12 105 (hpb->srgn_mem_size / HPB_E= NTRY_SIZE)); f02bc9754a6887 Daejun Park 2021-07-12 106 hpb->last_srgn_entries =3D hpb= _lu_info->num_blocks f02bc9754a6887 Daejun Park 2021-07-12 107 % (hpb->srgn_mem_size / HP= B_ENTRY_SIZE); f02bc9754a6887 Daejun Park 2021-07-12 108 = f02bc9754a6887 Daejun Park 2021-07-12 109 hpb->pages_per_srgn =3D DIV_RO= UND_UP(hpb->srgn_mem_size, PAGE_SIZE); f02bc9754a6887 Daejun Park 2021-07-12 110 } f02bc9754a6887 Daejun Park 2021-07-12 111 = --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org --===============2668575784862728187==--