Kernel January 2025

kernel@openeuler.org

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[openeuler:OLK-6.6 1682/1682] arch/x86/kernel/cpu/hygon.c:480:6: warning: no previous prototype for 'set_c86_features_para_invalid'
by kernel test robot 01 Jan '25

01 Jan '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 1e531b8351b843cd4a160764c0f67e4c9805234d commit: 48fb9af1d04848a2583b2dbf3b7091eca38dd482 [1682/1682] mm: Enhanced copy capabilities for Hygon processor config: x86_64-randconfig-121-20250101 (https://download.01.org/0day-ci/archive/20250101/202501011605.BcpO7rIF-lkp@…) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250101/202501011605.BcpO7rIF-lkp@…) 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(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202501011605.BcpO7rIF-lkp@intel.com/ All warnings (new ones prefixed by >>): >> arch/x86/kernel/cpu/hygon.c:480:6: warning: no previous prototype for 'set_c86_features_para_invalid' [-Wmissing-prototypes] 480 | void set_c86_features_para_invalid(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> arch/x86/kernel/cpu/hygon.c:485:14: warning: no previous prototype for 'get_nt_block_copy_mini_len' [-Wmissing-prototypes] 485 | unsigned int get_nt_block_copy_mini_len(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ -- >> arch/x86/kernel/fpu/core.c:466:14: warning: no previous prototype for 'get_fpustate_free_space' [-Wmissing-prototypes] 466 | unsigned int get_fpustate_free_space(struct fpu *fpu) | ^~~~~~~~~~~~~~~~~~~~~~~ sparse warnings: (new ones prefixed by >>) >> arch/x86/kernel/cpu/hygon.c:480:6: sparse: sparse: symbol 'set_c86_features_para_invalid' was not declared. Should it be static? >> arch/x86/kernel/cpu/hygon.c:522:30: sparse: sparse: symbol 'hygon_c86_attr_group' was not declared. Should it be static? -- >> arch/x86/kernel/fpu/core.c:466:14: sparse: sparse: symbol 'get_fpustate_free_space' was not declared. Should it be static? arch/x86/kernel/fpu/core.c:656:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ arch/x86/kernel/fpu/core.c:656:39: sparse: expected struct spinlock [usertype] *lock arch/x86/kernel/fpu/core.c:656:39: sparse: got struct spinlock [noderef] __rcu * arch/x86/kernel/fpu/core.c:660:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ arch/x86/kernel/fpu/core.c:660:41: sparse: expected struct spinlock [usertype] *lock arch/x86/kernel/fpu/core.c:660:41: sparse: got struct spinlock [noderef] __rcu * vim +/set_c86_features_para_invalid +480 arch/x86/kernel/cpu/hygon.c 479 > 480 void set_c86_features_para_invalid(void) 481 { 482 memset((void *)&hygon_c86_data, 0, sizeof(struct hygon_c86_info)); 483 } 484 > 485 unsigned int get_nt_block_copy_mini_len(void) 486 { 487 unsigned int mini_len = hygon_c86_data.nt_cpy_mini_len; 488 489 return mini_len; 490 } 491 EXPORT_SYMBOL_GPL(get_nt_block_copy_mini_len); 492 493 static ssize_t show_nt_cpy_mini_len(struct kobject *kobj, 494 struct kobj_attribute *attr, char *buf) 495 { 496 return snprintf(buf, 40, "%d\n", hygon_c86_data.nt_cpy_mini_len); 497 } 498 499 static ssize_t store_nt_cpy_mini_len(struct kobject *kobj, 500 struct kobj_attribute *attr, 501 const char *buf, size_t count) 502 { 503 unsigned long val; 504 ssize_t ret; 505 506 ret = kstrtoul(buf, 0, &val); 507 if (ret) 508 return ret; 509 510 hygon_c86_data.nt_cpy_mini_len = val; 511 512 return count; 513 } 514 515 static struct kobj_attribute nt_cpy_mini_len_attribute = __ATTR( 516 nt_cpy_mini_len, 0600, show_nt_cpy_mini_len, store_nt_cpy_mini_len); 517 518 static struct attribute *c86_default_attrs[] = { 519 &nt_cpy_mini_len_attribute.attr, NULL 520 }; 521 > 522 const struct attribute_group hygon_c86_attr_group = { 523 .attrs = c86_default_attrs, 524 .name = "hygon_c86", 525 }; 526 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-5.10 2616/2616] mm/memcontrol.c:4167:5: warning: no previous prototype for 'memcg_swapmax_read'
by kernel test robot 01 Jan '25

01 Jan '25

tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: 55bf638d3d29c53ddd64ed89efda8b70b47ccbbc commit: 5361bef36768820fb029e081a669749b8001769e [2616/2616] memcg: add restrict to swap to cgroup1 config: arm64-randconfig-r052-20250101 (https://download.01.org/0day-ci/archive/20250101/202501011625.6qilIzlu-lkp@…) compiler: aarch64-linux-gcc (GCC) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250101/202501011625.6qilIzlu-lkp@…) 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(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202501011625.6qilIzlu-lkp@intel.com/ All warnings (new ones prefixed by >>): >> mm/memcontrol.c:4167:5: warning: no previous prototype for 'memcg_swapmax_read' [-Wmissing-prototypes] 4167 | u64 memcg_swapmax_read(struct cgroup_subsys_state *css, struct cftype *cft) | ^~~~~~~~~~~~~~~~~~ vim +/memcg_swapmax_read +4167 mm/memcontrol.c 4166 > 4167 u64 memcg_swapmax_read(struct cgroup_subsys_state *css, struct cftype *cft) 4168 { 4169 struct mem_cgroup *memcg = mem_cgroup_from_css(css); 4170 4171 if (!static_branch_likely(&memcg_swap_qos_key)) 4172 return PAGE_COUNTER_MAX * PAGE_SIZE; 4173 4174 return READ_ONCE(memcg->swap_dev->max) * PAGE_SIZE; 4175 } 4176 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6 1682/1682] mm/dynamic_pool.c:1577:25: sparse: sparse: symbol 'pagelist_dpool_ops' was not declared. Should it be static?
by kernel test robot 01 Jan '25

01 Jan '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 1e531b8351b843cd4a160764c0f67e4c9805234d commit: cf98ffbc116bc49dc4506c68e20b02e26519ad35 [1682/1682] mm/dynamic_pool: fill dpool with pagelist config: x86_64-randconfig-121-20250101 (https://download.01.org/0day-ci/archive/20250101/202501011500.zzJzjVne-lkp@…) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250101/202501011500.zzJzjVne-lkp@…) 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(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202501011500.zzJzjVne-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) mm/dynamic_pool.c:999:55: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct cgroup_subsys_state *css @@ got struct cgroup_subsys_state [noderef] __rcu * @@ mm/dynamic_pool.c:999:55: sparse: expected struct cgroup_subsys_state *css mm/dynamic_pool.c:999:55: sparse: got struct cgroup_subsys_state [noderef] __rcu * >> mm/dynamic_pool.c:1577:25: sparse: sparse: symbol 'pagelist_dpool_ops' was not declared. Should it be static? vim +/pagelist_dpool_ops +1577 mm/dynamic_pool.c 1576 > 1577 struct dynamic_pool_ops pagelist_dpool_ops = { 1578 .fill_pool = dpool_fill_from_pagelist, 1579 .drain_pool = dpool_drain_to_pagelist, 1580 .restore_pool = dpool_migrate_used_pages, 1581 }; 1582 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6 1682/1682] mm/dynamic_pool.c:118:55: sparse: sparse: incorrect type in initializer (different address spaces)
by kernel test robot 01 Jan '25

01 Jan '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 1e531b8351b843cd4a160764c0f67e4c9805234d commit: 8822f3476adadcf84c7cb3db0d1a0a39a6fdc398 [1682/1682] mm/dynamic_pool: introduce per-memcg memory pool config: x86_64-randconfig-121-20250101 (https://download.01.org/0day-ci/archive/20250101/202501011211.fyQq3kNY-lkp@…) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250101/202501011211.fyQq3kNY-lkp@…) 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(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202501011211.fyQq3kNY-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) >> mm/dynamic_pool.c:118:55: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct cgroup_subsys_state *css @@ got struct cgroup_subsys_state [noderef] __rcu * @@ mm/dynamic_pool.c:118:55: sparse: expected struct cgroup_subsys_state *css mm/dynamic_pool.c:118:55: sparse: got struct cgroup_subsys_state [noderef] __rcu * vim +118 mm/dynamic_pool.c 115 116 int dynamic_pool_destroy(struct cgroup *cgrp, bool *clear_css_online) 117 { > 118 struct cgroup_subsys_state *css = cgrp->subsys[memory_cgrp_id]; 119 struct mem_cgroup *memcg = mem_cgroup_from_css(css); 120 struct dynamic_pool *dpool; 121 int ret = 0; 122 123 if (!dpool_enabled || !memcg) 124 return 0; 125 126 mutex_lock(&dpool_mutex); 127 dpool = dpool_get_from_memcg(memcg); 128 if (!dpool) 129 goto unlock; 130 131 if (dpool->memcg != memcg) { 132 memcg->dpool = NULL; 133 goto put; 134 } 135 136 /* A offline dpool is not allowed for allocation */ 137 dpool->online = false; 138 139 memcg->dpool = NULL; 140 141 /* Release the initial reference count */ 142 dpool_put(dpool); 143 144 /* 145 * Since dpool is destroyed and the memcg will be freed then, 146 * clear CSS_ONLINE immediately to prevent race with create. 147 */ 148 if (cgrp->self.flags & CSS_ONLINE) { 149 cgrp->self.flags &= ~CSS_ONLINE; 150 *clear_css_online = true; 151 } 152 153 put: 154 dpool_put(dpool); 155 unlock: 156 mutex_unlock(&dpool_mutex); 157 158 return ret; 159 } 160 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6 1682/1682] kernel/sched/fair.c:8325:23: error: implicit declaration of function 'sched_idle_cpu'; did you mean 'sched_idle_rq'?
by kernel test robot 01 Jan '25

01 Jan '25

Hi Zhang, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 1e531b8351b843cd4a160764c0f67e4c9805234d commit: 926b9b0cd97e640ee680347cf449c3dc152dddd2 [1682/1682] sched: Throttle qos cfs_rq when current cpu is running online task config: x86_64-randconfig-121-20250101 (https://download.01.org/0day-ci/archive/20250101/202501010909.j7gDYmAD-lkp@…) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250101/202501010909.j7gDYmAD-lkp@…) 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(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202501010909.j7gDYmAD-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from include/linux/export.h:5, from include/linux/linkage.h:7, from include/linux/kernel.h:17, from include/linux/cpumask.h:10, from include/linux/energy_model.h:4, from kernel/sched/fair.c:23: kernel/sched/fair.c: In function 'check_qos_cfs_rq': >> kernel/sched/fair.c:8325:23: error: implicit declaration of function 'sched_idle_cpu'; did you mean 'sched_idle_rq'? [-Werror=implicit-function-declaration] 8325 | !sched_idle_cpu(smp_processor_id()) && | ^~~~~~~~~~~~~~ include/linux/compiler.h:77:45: note: in definition of macro 'unlikely' 77 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ >> kernel/sched/fair.c:8328:35: error: 'struct rq' has no member named 'online' 8328 | if (!rq_of(cfs_rq)->online) | ^~ kernel/sched/fair.c: In function 'pick_next_task_fair': >> kernel/sched/fair.c:8531:19: error: 'struct rq' has no member named 'idle_stamp' 8531 | rq->idle_stamp = 0; | ^~ kernel/sched/fair.c: At top level: kernel/sched/fair.c:8166:13: warning: 'start_qos_hrtimer' used but never defined 8166 | static void start_qos_hrtimer(int cpu); | ^~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +8325 kernel/sched/fair.c 8321 8322 static bool check_qos_cfs_rq(struct cfs_rq *cfs_rq) 8323 { 8324 if (unlikely(cfs_rq && cfs_rq->tg->qos_level < 0 && > 8325 !sched_idle_cpu(smp_processor_id()) && 8326 cfs_rq->h_nr_running == cfs_rq->idle_h_nr_running)) { 8327 > 8328 if (!rq_of(cfs_rq)->online) 8329 return false; 8330 8331 throttle_qos_cfs_rq(cfs_rq); 8332 return true; 8333 } 8334 8335 return false; 8336 } 8337 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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