diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/damon/dbgfs-test.h | 16 | ||||
| -rw-r--r-- | mm/debug.c | 4 | ||||
| -rw-r--r-- | mm/kasan/hw_tags.c | 29 | ||||
| -rw-r--r-- | mm/kasan/kasan.h | 32 | ||||
| -rw-r--r-- | mm/kasan/report.c | 2 | ||||
| -rw-r--r-- | mm/ksm.c | 2 | ||||
| -rw-r--r-- | mm/memblock.c | 16 | ||||
| -rw-r--r-- | mm/memcontrol.c | 10 | ||||
| -rw-r--r-- | mm/memory-failure.c | 12 | ||||
| -rw-r--r-- | mm/memory.c | 1 | ||||
| -rw-r--r-- | mm/shmem.c | 4 | ||||
| -rw-r--r-- | mm/swap.c | 19 | ||||
| -rw-r--r-- | mm/util.c | 4 | ||||
| -rw-r--r-- | mm/workingset.c | 1 |
14 files changed, 100 insertions, 52 deletions
diff --git a/mm/damon/dbgfs-test.h b/mm/damon/dbgfs-test.h index 930e83bceef0..4eddcfa73996 100644 --- a/mm/damon/dbgfs-test.h +++ b/mm/damon/dbgfs-test.h @@ -20,27 +20,27 @@ static void damon_dbgfs_test_str_to_target_ids(struct kunit *test) ssize_t nr_integers = 0, i; question = "123"; - answers = str_to_target_ids(question, strnlen(question, 128), + answers = str_to_target_ids(question, strlen(question), &nr_integers); KUNIT_EXPECT_EQ(test, (ssize_t)1, nr_integers); KUNIT_EXPECT_EQ(test, 123ul, answers[0]); kfree(answers); question = "123abc"; - answers = str_to_target_ids(question, strnlen(question, 128), + answers = str_to_target_ids(question, strlen(question), &nr_integers); KUNIT_EXPECT_EQ(test, (ssize_t)1, nr_integers); KUNIT_EXPECT_EQ(test, 123ul, answers[0]); kfree(answers); question = "a123"; - answers = str_to_target_ids(question, strnlen(question, 128), + answers = str_to_target_ids(question, strlen(question), &nr_integers); KUNIT_EXPECT_EQ(test, (ssize_t)0, nr_integers); kfree(answers); question = "12 35"; - answers = str_to_target_ids(question, strnlen(question, 128), + answers = str_to_target_ids(question, strlen(question), &nr_integers); KUNIT_EXPECT_EQ(test, (ssize_t)2, nr_integers); for (i = 0; i < nr_integers; i++) @@ -48,7 +48,7 @@ static void damon_dbgfs_test_str_to_target_ids(struct kunit *test) kfree(answers); question = "12 35 46"; - answers = str_to_target_ids(question, strnlen(question, 128), + answers = str_to_target_ids(question, strlen(question), &nr_integers); KUNIT_EXPECT_EQ(test, (ssize_t)3, nr_integers); for (i = 0; i < nr_integers; i++) @@ -56,7 +56,7 @@ static void damon_dbgfs_test_str_to_target_ids(struct kunit *test) kfree(answers); question = "12 35 abc 46"; - answers = str_to_target_ids(question, strnlen(question, 128), + answers = str_to_target_ids(question, strlen(question), &nr_integers); KUNIT_EXPECT_EQ(test, (ssize_t)2, nr_integers); for (i = 0; i < 2; i++) @@ -64,13 +64,13 @@ static void damon_dbgfs_test_str_to_target_ids(struct kunit *test) kfree(answers); question = ""; - answers = str_to_target_ids(question, strnlen(question, 128), + answers = str_to_target_ids(question, strlen(question), &nr_integers); KUNIT_EXPECT_EQ(test, (ssize_t)0, nr_integers); kfree(answers); question = "\n"; - answers = str_to_target_ids(question, strnlen(question, 128), + answers = str_to_target_ids(question, strlen(question), &nr_integers); KUNIT_EXPECT_EQ(test, (ssize_t)0, nr_integers); kfree(answers); diff --git a/mm/debug.c b/mm/debug.c index e73fe0a8ec3d..fae0f81ad831 100644 --- a/mm/debug.c +++ b/mm/debug.c @@ -24,7 +24,9 @@ const char *migrate_reason_names[MR_TYPES] = { "syscall_or_cpuset", "mempolicy_mbind", "numa_misplaced", - "cma", + "contig_range", + "longterm_pin", + "demotion", }; const struct trace_print_flags pageflag_names[] = { diff --git a/mm/kasan/hw_tags.c b/mm/kasan/hw_tags.c index 05d1e9460e2e..dc892119e88f 100644 --- a/mm/kasan/hw_tags.c +++ b/mm/kasan/hw_tags.c @@ -29,6 +29,7 @@ enum kasan_arg_mode { KASAN_ARG_MODE_DEFAULT, KASAN_ARG_MODE_SYNC, KASAN_ARG_MODE_ASYNC, + KASAN_ARG_MODE_ASYMM, }; enum kasan_arg_stacktrace { @@ -45,9 +46,9 @@ static enum kasan_arg_stacktrace kasan_arg_stacktrace __ro_after_init; DEFINE_STATIC_KEY_FALSE(kasan_flag_enabled); EXPORT_SYMBOL(kasan_flag_enabled); -/* Whether the asynchronous mode is enabled. */ -bool kasan_flag_async __ro_after_init; -EXPORT_SYMBOL_GPL(kasan_flag_async); +/* Whether the selected mode is synchronous/asynchronous/asymmetric.*/ +enum kasan_mode kasan_mode __ro_after_init; +EXPORT_SYMBOL_GPL(kasan_mode); /* Whether to collect alloc/free stack traces. */ DEFINE_STATIC_KEY_FALSE(kasan_flag_stacktrace); @@ -69,7 +70,7 @@ static int __init early_kasan_flag(char *arg) } early_param("kasan", early_kasan_flag); -/* kasan.mode=sync/async */ +/* kasan.mode=sync/async/asymm */ static int __init early_kasan_mode(char *arg) { if (!arg) @@ -79,6 +80,8 @@ static int __init early_kasan_mode(char *arg) kasan_arg_mode = KASAN_ARG_MODE_SYNC; else if (!strcmp(arg, "async")) kasan_arg_mode = KASAN_ARG_MODE_ASYNC; + else if (!strcmp(arg, "asymm")) + kasan_arg_mode = KASAN_ARG_MODE_ASYMM; else return -EINVAL; @@ -116,11 +119,13 @@ void kasan_init_hw_tags_cpu(void) return; /* - * Enable async mode only when explicitly requested through - * the command line. + * Enable async or asymm modes only when explicitly requested + * through the command line. */ if (kasan_arg_mode == KASAN_ARG_MODE_ASYNC) hw_enable_tagging_async(); + else if (kasan_arg_mode == KASAN_ARG_MODE_ASYMM) + hw_enable_tagging_asymm(); else hw_enable_tagging_sync(); } @@ -143,15 +148,19 @@ void __init kasan_init_hw_tags(void) case KASAN_ARG_MODE_DEFAULT: /* * Default to sync mode. - * Do nothing, kasan_flag_async keeps its default value. */ - break; + fallthrough; case KASAN_ARG_MODE_SYNC: - /* Do nothing, kasan_flag_async keeps its default value. */ + /* Sync mode enabled. */ + kasan_mode = KASAN_MODE_SYNC; break; case KASAN_ARG_MODE_ASYNC: /* Async mode enabled. */ - kasan_flag_async = true; + kasan_mode = KASAN_MODE_ASYNC; + break; + case KASAN_ARG_MODE_ASYMM: + /* Asymm mode enabled. */ + kasan_mode = KASAN_MODE_ASYMM; break; } diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h index 8bf568a80eb8..b495e17445ad 100644 --- a/mm/kasan/kasan.h +++ b/mm/kasan/kasan.h @@ -13,16 +13,28 @@ #include "../slab.h" DECLARE_STATIC_KEY_FALSE(kasan_flag_stacktrace); -extern bool kasan_flag_async __ro_after_init; + +enum kasan_mode { + KASAN_MODE_SYNC, + KASAN_MODE_ASYNC, + KASAN_MODE_ASYMM, +}; + +extern enum kasan_mode kasan_mode __ro_after_init; static inline bool kasan_stack_collection_enabled(void) { return static_branch_unlikely(&kasan_flag_stacktrace); } -static inline bool kasan_async_mode_enabled(void) +static inline bool kasan_async_fault_possible(void) +{ + return kasan_mode == KASAN_MODE_ASYNC || kasan_mode == KASAN_MODE_ASYMM; +} + +static inline bool kasan_sync_fault_possible(void) { - return kasan_flag_async; + return kasan_mode == KASAN_MODE_SYNC || kasan_mode == KASAN_MODE_ASYMM; } #else @@ -31,14 +43,17 @@ static inline bool kasan_stack_collection_enabled(void) return true; } -static inline bool kasan_async_mode_enabled(void) +static inline bool kasan_async_fault_possible(void) { return false; } -#endif +static inline bool kasan_sync_fault_possible(void) +{ + return true; +} -extern bool kasan_flag_async __ro_after_init; +#endif #if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS) #define KASAN_GRANULE_SIZE (1UL << KASAN_SHADOW_SCALE_SHIFT) @@ -289,6 +304,9 @@ static inline const void *arch_kasan_set_tag(const void *addr, u8 tag) #ifndef arch_enable_tagging_async #define arch_enable_tagging_async() #endif +#ifndef arch_enable_tagging_asymm +#define arch_enable_tagging_asymm() +#endif #ifndef arch_force_async_tag_fault #define arch_force_async_tag_fault() #endif @@ -304,6 +322,7 @@ static inline const void *arch_kasan_set_tag(const void *addr, u8 tag) #define hw_enable_tagging_sync() arch_enable_tagging_sync() #define hw_enable_tagging_async() arch_enable_tagging_async() +#define hw_enable_tagging_asymm() arch_enable_tagging_asymm() #define hw_force_async_tag_fault() arch_force_async_tag_fault() #define hw_get_random_tag() arch_get_random_tag() #define hw_get_mem_tag(addr) arch_get_mem_tag(addr) @@ -314,6 +333,7 @@ static inline const void *arch_kasan_set_tag(const void *addr, u8 tag) #define hw_enable_tagging_sync() #define hw_enable_tagging_async() +#define hw_enable_tagging_asymm() #endif /* CONFIG_KASAN_HW_TAGS */ diff --git a/mm/kasan/report.c b/mm/kasan/report.c index 884a950c7026..9da071ad930c 100644 --- a/mm/kasan/report.c +++ b/mm/kasan/report.c @@ -112,7 +112,7 @@ static void start_report(unsigned long *flags) static void end_report(unsigned long *flags, unsigned long addr) { - if (!kasan_async_mode_enabled()) + if (!kasan_async_fault_possible()) trace_error_report_end(ERROR_DETECTOR_KASAN, addr); pr_err("==================================================================\n"); add_taint(TAINT_BAD_PAGE, LOCKDEP_NOW_UNRELIABLE); @@ -651,10 +651,8 @@ static void remove_node_from_stable_tree(struct stable_node *stable_node) * from &migrate_nodes. This will verify that future list.h changes * don't break STABLE_NODE_DUP_HEAD. Only recent gcc can handle it. */ -#if defined(GCC_VERSION) && GCC_VERSION >= 40903 BUILD_BUG_ON(STABLE_NODE_DUP_HEAD <= &migrate_nodes); BUILD_BUG_ON(STABLE_NODE_DUP_HEAD >= &migrate_nodes + 1); -#endif if (stable_node->head == &migrate_nodes) list_del(&stable_node->list); diff --git a/mm/memblock.c b/mm/memblock.c index 0ab5a749bfa6..184dcd2e5d99 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -472,7 +472,7 @@ static int __init_memblock memblock_double_array(struct memblock_type *type, kfree(old_array); else if (old_array != memblock_memory_init_regions && old_array != memblock_reserved_init_regions) - memblock_free(__pa(old_array), old_alloc_size); + memblock_free_ptr(old_array, old_alloc_size); /* * Reserve the new array if that comes from the memblock. Otherwise, we @@ -796,6 +796,20 @@ int __init_memblock memblock_remove(phys_addr_t base, phys_addr_t size) } /** + * memblock_free_ptr - free boot memory allocation + * @ptr: starting address of the boot memory allocation + * @size: size of the boot memory block in bytes + * + * Free boot memory block previously allocated by memblock_alloc_xx() API. + * The freeing memory will not be released to the buddy allocator. + */ +void __init_memblock memblock_free_ptr(void *ptr, size_t size) +{ + if (ptr) + memblock_free(__pa(ptr), size); +} + +/** * memblock_free - free boot memory block * @base: phys starting address of the boot memory block * @size: size of the boot memory block in bytes diff --git a/mm/memcontrol.c b/mm/memcontrol.c index b762215d73eb..6da5020a8656 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -106,9 +106,6 @@ static bool do_memsw_account(void) /* memcg and lruvec stats flushing */ static void flush_memcg_stats_dwork(struct work_struct *w); static DECLARE_DEFERRABLE_WORK(stats_flush_dwork, flush_memcg_stats_dwork); -static void flush_memcg_stats_work(struct work_struct *w); -static DECLARE_WORK(stats_flush_work, flush_memcg_stats_work); -static DEFINE_PER_CPU(unsigned int, stats_flush_threshold); static DEFINE_SPINLOCK(stats_flush_lock); #define THRESHOLDS_EVENTS_TARGET 128 @@ -682,8 +679,6 @@ void __mod_memcg_lruvec_state(struct lruvec *lruvec, enum node_stat_item idx, /* Update lruvec */ __this_cpu_add(pn->lruvec_stats_percpu->state[idx], val); - if (!(__this_cpu_inc_return(stats_flush_threshold) % MEMCG_CHARGE_BATCH)) - queue_work(system_unbound_wq, &stats_flush_work); } /** @@ -5361,11 +5356,6 @@ static void flush_memcg_stats_dwork(struct work_struct *w) queue_delayed_work(system_unbound_wq, &stats_flush_dwork, 2UL*HZ); } -static void flush_memcg_stats_work(struct work_struct *w) -{ - mem_cgroup_flush_stats(); -} - static void mem_cgroup_css_rstat_flush(struct cgroup_subsys_state *css, int cpu) { struct mem_cgroup *memcg = mem_cgroup_from_css(css); diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 54879c339024..3e6449f2102a 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -306,6 +306,7 @@ static unsigned long dev_pagemap_mapping_shift(struct page *page, struct vm_area_struct *vma) { unsigned long address = vma_address(page, vma); + unsigned long ret = 0; pgd_t *pgd; p4d_t *p4d; pud_t *pud; @@ -329,11 +330,10 @@ static unsigned long dev_pagemap_mapping_shift(struct page *page, if (pmd_devmap(*pmd)) return PMD_SHIFT; pte = pte_offset_map(pmd, address); - if (!pte_present(*pte)) - return 0; - if (pte_devmap(*pte)) - return PAGE_SHIFT; - return 0; + if (pte_present(*pte) && pte_devmap(*pte)) + ret = PAGE_SHIFT; + pte_unmap(pte); + return ret; } /* @@ -1126,7 +1126,7 @@ static int page_action(struct page_state *ps, struct page *p, */ static inline bool HWPoisonHandlable(struct page *page) { - return PageLRU(page) || __PageMovable(page); + return PageLRU(page) || __PageMovable(page) || is_free_buddy_page(page); } static int __get_hwpoison_page(struct page *page) diff --git a/mm/memory.c b/mm/memory.c index 25fc46e87214..adf9b9ef8277 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -3403,6 +3403,7 @@ void unmap_mapping_pages(struct address_space *mapping, pgoff_t start, unmap_mapping_range_tree(&mapping->i_mmap, &details); i_mmap_unlock_write(mapping); } +EXPORT_SYMBOL_GPL(unmap_mapping_pages); /** * unmap_mapping_range - unmap the portion of all mmaps in the specified diff --git a/mm/shmem.c b/mm/shmem.c index 88742953532c..b5860f4a2738 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -490,9 +490,9 @@ bool shmem_is_huge(struct vm_area_struct *vma, case SHMEM_HUGE_ALWAYS: return true; case SHMEM_HUGE_WITHIN_SIZE: - index = round_up(index, HPAGE_PMD_NR); + index = round_up(index + 1, HPAGE_PMD_NR); i_size = round_up(i_size_read(inode), PAGE_SIZE); - if (i_size >= HPAGE_PMD_SIZE && (i_size >> PAGE_SHIFT) >= index) + if (i_size >> PAGE_SHIFT >= index) return true; fallthrough; case SHMEM_HUGE_ADVISE: diff --git a/mm/swap.c b/mm/swap.c index 897200d27dd0..af3cad4e5378 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -620,7 +620,6 @@ void lru_add_drain_cpu(int cpu) pagevec_lru_move_fn(pvec, lru_lazyfree_fn); activate_page_drain(cpu); - invalidate_bh_lrus_cpu(cpu); } /** @@ -703,6 +702,20 @@ void lru_add_drain(void) local_unlock(&lru_pvecs.lock); } +/* + * It's called from per-cpu workqueue context in SMP case so + * lru_add_drain_cpu and invalidate_bh_lrus_cpu should run on + * the same cpu. It shouldn't be a problem in !SMP case since + * the core is only one and the locks will disable preemption. + */ +static void lru_add_and_bh_lrus_drain(void) +{ + local_lock(&lru_pvecs.lock); + lru_add_drain_cpu(smp_processor_id()); + local_unlock(&lru_pvecs.lock); + invalidate_bh_lrus_cpu(); +} + void lru_add_drain_cpu_zone(struct zone *zone) { local_lock(&lru_pvecs.lock); @@ -717,7 +730,7 @@ static DEFINE_PER_CPU(struct work_struct, lru_add_drain_work); static void lru_add_drain_per_cpu(struct work_struct *dummy) { - lru_add_drain(); + lru_add_and_bh_lrus_drain(); } /* @@ -858,7 +871,7 @@ void lru_cache_disable(void) */ __lru_add_drain_all(true); #else - lru_add_drain(); + lru_add_and_bh_lrus_drain(); #endif } diff --git a/mm/util.c b/mm/util.c index 499b6b5767ed..bacabe446906 100644 --- a/mm/util.c +++ b/mm/util.c @@ -787,7 +787,7 @@ int overcommit_policy_handler(struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table t; - int new_policy; + int new_policy = -1; int ret; /* @@ -805,7 +805,7 @@ int overcommit_policy_handler(struct ctl_table *table, int write, void *buffer, t = *table; t.data = &new_policy; ret = proc_dointvec_minmax(&t, write, buffer, lenp, ppos); - if (ret) + if (ret || new_policy == -1) return ret; mm_compute_batch(new_policy); diff --git a/mm/workingset.c b/mm/workingset.c index d4268d8e9a82..d5b81e4f4cbe 100644 --- a/mm/workingset.c +++ b/mm/workingset.c @@ -352,6 +352,7 @@ void workingset_refault(struct page *page, void *shadow) inc_lruvec_state(lruvec, WORKINGSET_REFAULT_BASE + file); + mem_cgroup_flush_stats(); /* * Compare the distance to the existing workingset size. We * don't activate pages that couldn't stay resident even if |