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-rw-r--r--mm/backing-dev.c1
-rw-r--r--mm/highmem.c7
-rw-r--r--mm/memory-failure.c33
-rw-r--r--mm/mmap.c6
-rw-r--r--mm/percpu.c85
-rw-r--r--mm/slab.c1
-rw-r--r--mm/slob.c5
-rw-r--r--mm/slub.c1
-rw-r--r--mm/vmalloc.c2
9 files changed, 98 insertions, 43 deletions
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 123bcef13e51..f9fd3dd3916b 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -665,7 +665,6 @@ int bdi_init(struct backing_dev_info *bdi)
bdi->max_ratio = 100;
bdi->max_prop_frac = PROP_FRAC_BASE;
spin_lock_init(&bdi->wb_lock);
- INIT_RCU_HEAD(&bdi->rcu_head);
INIT_LIST_HEAD(&bdi->bdi_list);
INIT_LIST_HEAD(&bdi->wb_list);
INIT_LIST_HEAD(&bdi->work_list);
diff --git a/mm/highmem.c b/mm/highmem.c
index 66baa20f78f5..7a0aa1be4993 100644
--- a/mm/highmem.c
+++ b/mm/highmem.c
@@ -26,6 +26,7 @@
#include <linux/init.h>
#include <linux/hash.h>
#include <linux/highmem.h>
+#include <linux/kgdb.h>
#include <asm/tlbflush.h>
/*
@@ -470,6 +471,12 @@ void debug_kmap_atomic(enum km_type type)
warn_count--;
}
}
+#ifdef CONFIG_KGDB_KDB
+ if (unlikely(type == KM_KDB && atomic_read(&kgdb_active) == -1)) {
+ WARN_ON(1);
+ warn_count--;
+ }
+#endif /* CONFIG_KGDB_KDB */
}
#endif
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 620b0b461593..6b44e52cacaa 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -45,6 +45,7 @@
#include <linux/page-isolation.h>
#include <linux/suspend.h>
#include <linux/slab.h>
+#include <linux/swapops.h>
#include "internal.h"
int sysctl_memory_failure_early_kill __read_mostly = 0;
@@ -1296,3 +1297,35 @@ done:
/* keep elevated page count for bad page */
return ret;
}
+
+/*
+ * The caller must hold current->mm->mmap_sem in read mode.
+ */
+int is_hwpoison_address(unsigned long addr)
+{
+ pgd_t *pgdp;
+ pud_t pud, *pudp;
+ pmd_t pmd, *pmdp;
+ pte_t pte, *ptep;
+ swp_entry_t entry;
+
+ pgdp = pgd_offset(current->mm, addr);
+ if (!pgd_present(*pgdp))
+ return 0;
+ pudp = pud_offset(pgdp, addr);
+ pud = *pudp;
+ if (!pud_present(pud) || pud_large(pud))
+ return 0;
+ pmdp = pmd_offset(pudp, addr);
+ pmd = *pmdp;
+ if (!pmd_present(pmd) || pmd_large(pmd))
+ return 0;
+ ptep = pte_offset_map(pmdp, addr);
+ pte = *ptep;
+ pte_unmap(ptep);
+ if (!is_swap_pte(pte))
+ return 0;
+ entry = pte_to_swp_entry(pte);
+ return is_hwpoison_entry(entry);
+}
+EXPORT_SYMBOL_GPL(is_hwpoison_address);
diff --git a/mm/mmap.c b/mm/mmap.c
index 456ec6f27889..e38e910cb756 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1734,8 +1734,10 @@ int expand_upwards(struct vm_area_struct *vma, unsigned long address)
grow = (address - vma->vm_end) >> PAGE_SHIFT;
error = acct_stack_growth(vma, size, grow);
- if (!error)
+ if (!error) {
vma->vm_end = address;
+ perf_event_mmap(vma);
+ }
}
anon_vma_unlock(vma);
return error;
@@ -1781,6 +1783,7 @@ static int expand_downwards(struct vm_area_struct *vma,
if (!error) {
vma->vm_start = address;
vma->vm_pgoff -= grow;
+ perf_event_mmap(vma);
}
}
anon_vma_unlock(vma);
@@ -2208,6 +2211,7 @@ unsigned long do_brk(unsigned long addr, unsigned long len)
vma->vm_page_prot = vm_get_page_prot(flags);
vma_link(mm, vma, prev, rb_link, rb_parent);
out:
+ perf_event_mmap(vma);
mm->total_vm += len >> PAGE_SHIFT;
if (flags & VM_LOCKED) {
if (!mlock_vma_pages_range(vma, addr, addr + len))
diff --git a/mm/percpu.c b/mm/percpu.c
index 6470e7710231..e61dc2cc5873 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -282,6 +282,9 @@ static void __maybe_unused pcpu_next_pop(struct pcpu_chunk *chunk,
*/
static void *pcpu_mem_alloc(size_t size)
{
+ if (WARN_ON_ONCE(!slab_is_available()))
+ return NULL;
+
if (size <= PAGE_SIZE)
return kzalloc(size, GFP_KERNEL);
else {
@@ -392,13 +395,6 @@ static int pcpu_extend_area_map(struct pcpu_chunk *chunk, int new_alloc)
old_size = chunk->map_alloc * sizeof(chunk->map[0]);
memcpy(new, chunk->map, old_size);
- /*
- * map_alloc < PCPU_DFL_MAP_ALLOC indicates that the chunk is
- * one of the first chunks and still using static map.
- */
- if (chunk->map_alloc >= PCPU_DFL_MAP_ALLOC)
- old = chunk->map;
-
chunk->map_alloc = new_alloc;
chunk->map = new;
new = NULL;
@@ -604,7 +600,7 @@ static struct pcpu_chunk *pcpu_alloc_chunk(void)
{
struct pcpu_chunk *chunk;
- chunk = kzalloc(pcpu_chunk_struct_size, GFP_KERNEL);
+ chunk = pcpu_mem_alloc(pcpu_chunk_struct_size);
if (!chunk)
return NULL;
@@ -1013,20 +1009,6 @@ phys_addr_t per_cpu_ptr_to_phys(void *addr)
return page_to_phys(pcpu_addr_to_page(addr));
}
-static inline size_t pcpu_calc_fc_sizes(size_t static_size,
- size_t reserved_size,
- ssize_t *dyn_sizep)
-{
- size_t size_sum;
-
- size_sum = PFN_ALIGN(static_size + reserved_size +
- (*dyn_sizep >= 0 ? *dyn_sizep : 0));
- if (*dyn_sizep != 0)
- *dyn_sizep = size_sum - static_size - reserved_size;
-
- return size_sum;
-}
-
/**
* pcpu_alloc_alloc_info - allocate percpu allocation info
* @nr_groups: the number of groups
@@ -1085,7 +1067,7 @@ void __init pcpu_free_alloc_info(struct pcpu_alloc_info *ai)
/**
* pcpu_build_alloc_info - build alloc_info considering distances between CPUs
* @reserved_size: the size of reserved percpu area in bytes
- * @dyn_size: free size for dynamic allocation in bytes, -1 for auto
+ * @dyn_size: minimum free size for dynamic allocation in bytes
* @atom_size: allocation atom size
* @cpu_distance_fn: callback to determine distance between cpus, optional
*
@@ -1103,8 +1085,8 @@ void __init pcpu_free_alloc_info(struct pcpu_alloc_info *ai)
* On success, pointer to the new allocation_info is returned. On
* failure, ERR_PTR value is returned.
*/
-struct pcpu_alloc_info * __init pcpu_build_alloc_info(
- size_t reserved_size, ssize_t dyn_size,
+static struct pcpu_alloc_info * __init pcpu_build_alloc_info(
+ size_t reserved_size, size_t dyn_size,
size_t atom_size,
pcpu_fc_cpu_distance_fn_t cpu_distance_fn)
{
@@ -1123,13 +1105,17 @@ struct pcpu_alloc_info * __init pcpu_build_alloc_info(
memset(group_map, 0, sizeof(group_map));
memset(group_cnt, 0, sizeof(group_cnt));
+ /* calculate size_sum and ensure dyn_size is enough for early alloc */
+ size_sum = PFN_ALIGN(static_size + reserved_size +
+ max_t(size_t, dyn_size, PERCPU_DYNAMIC_EARLY_SIZE));
+ dyn_size = size_sum - static_size - reserved_size;
+
/*
* Determine min_unit_size, alloc_size and max_upa such that
* alloc_size is multiple of atom_size and is the smallest
* which can accomodate 4k aligned segments which are equal to
* or larger than min_unit_size.
*/
- size_sum = pcpu_calc_fc_sizes(static_size, reserved_size, &dyn_size);
min_unit_size = max_t(size_t, size_sum, PCPU_MIN_UNIT_SIZE);
alloc_size = roundup(min_unit_size, atom_size);
@@ -1350,7 +1336,8 @@ int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,
void *base_addr)
{
static char cpus_buf[4096] __initdata;
- static int smap[2], dmap[2];
+ static int smap[PERCPU_DYNAMIC_EARLY_SLOTS] __initdata;
+ static int dmap[PERCPU_DYNAMIC_EARLY_SLOTS] __initdata;
size_t dyn_size = ai->dyn_size;
size_t size_sum = ai->static_size + ai->reserved_size + dyn_size;
struct pcpu_chunk *schunk, *dchunk = NULL;
@@ -1373,14 +1360,13 @@ int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,
} while (0)
/* sanity checks */
- BUILD_BUG_ON(ARRAY_SIZE(smap) >= PCPU_DFL_MAP_ALLOC ||
- ARRAY_SIZE(dmap) >= PCPU_DFL_MAP_ALLOC);
PCPU_SETUP_BUG_ON(ai->nr_groups <= 0);
PCPU_SETUP_BUG_ON(!ai->static_size);
PCPU_SETUP_BUG_ON(!base_addr);
PCPU_SETUP_BUG_ON(ai->unit_size < size_sum);
PCPU_SETUP_BUG_ON(ai->unit_size & ~PAGE_MASK);
PCPU_SETUP_BUG_ON(ai->unit_size < PCPU_MIN_UNIT_SIZE);
+ PCPU_SETUP_BUG_ON(ai->dyn_size < PERCPU_DYNAMIC_EARLY_SIZE);
PCPU_SETUP_BUG_ON(pcpu_verify_alloc_info(ai) < 0);
/* process group information and build config tables accordingly */
@@ -1532,7 +1518,7 @@ early_param("percpu_alloc", percpu_alloc_setup);
/**
* pcpu_embed_first_chunk - embed the first percpu chunk into bootmem
* @reserved_size: the size of reserved percpu area in bytes
- * @dyn_size: free size for dynamic allocation in bytes, -1 for auto
+ * @dyn_size: minimum free size for dynamic allocation in bytes
* @atom_size: allocation atom size
* @cpu_distance_fn: callback to determine distance between cpus, optional
* @alloc_fn: function to allocate percpu page
@@ -1553,10 +1539,7 @@ early_param("percpu_alloc", percpu_alloc_setup);
* vmalloc space is not orders of magnitude larger than distances
* between node memory addresses (ie. 32bit NUMA machines).
*
- * When @dyn_size is positive, dynamic area might be larger than
- * specified to fill page alignment. When @dyn_size is auto,
- * @dyn_size is just big enough to fill page alignment after static
- * and reserved areas.
+ * @dyn_size specifies the minimum dynamic area size.
*
* If the needed size is smaller than the minimum or specified unit
* size, the leftover is returned using @free_fn.
@@ -1564,7 +1547,7 @@ early_param("percpu_alloc", percpu_alloc_setup);
* RETURNS:
* 0 on success, -errno on failure.
*/
-int __init pcpu_embed_first_chunk(size_t reserved_size, ssize_t dyn_size,
+int __init pcpu_embed_first_chunk(size_t reserved_size, size_t dyn_size,
size_t atom_size,
pcpu_fc_cpu_distance_fn_t cpu_distance_fn,
pcpu_fc_alloc_fn_t alloc_fn,
@@ -1695,7 +1678,7 @@ int __init pcpu_page_first_chunk(size_t reserved_size,
snprintf(psize_str, sizeof(psize_str), "%luK", PAGE_SIZE >> 10);
- ai = pcpu_build_alloc_info(reserved_size, -1, PAGE_SIZE, NULL);
+ ai = pcpu_build_alloc_info(reserved_size, 0, PAGE_SIZE, NULL);
if (IS_ERR(ai))
return PTR_ERR(ai);
BUG_ON(ai->nr_groups != 1);
@@ -1821,3 +1804,33 @@ void __init setup_per_cpu_areas(void)
__per_cpu_offset[cpu] = delta + pcpu_unit_offsets[cpu];
}
#endif /* CONFIG_HAVE_SETUP_PER_CPU_AREA */
+
+/*
+ * First and reserved chunks are initialized with temporary allocation
+ * map in initdata so that they can be used before slab is online.
+ * This function is called after slab is brought up and replaces those
+ * with properly allocated maps.
+ */
+void __init percpu_init_late(void)
+{
+ struct pcpu_chunk *target_chunks[] =
+ { pcpu_first_chunk, pcpu_reserved_chunk, NULL };
+ struct pcpu_chunk *chunk;
+ unsigned long flags;
+ int i;
+
+ for (i = 0; (chunk = target_chunks[i]); i++) {
+ int *map;
+ const size_t size = PERCPU_DYNAMIC_EARLY_SLOTS * sizeof(map[0]);
+
+ BUILD_BUG_ON(size > PAGE_SIZE);
+
+ map = pcpu_mem_alloc(size);
+ BUG_ON(!map);
+
+ spin_lock_irqsave(&pcpu_lock, flags);
+ memcpy(map, chunk->map, size);
+ chunk->map = map;
+ spin_unlock_irqrestore(&pcpu_lock, flags);
+ }
+}
diff --git a/mm/slab.c b/mm/slab.c
index 29aad44a55c2..736e497733d6 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -102,7 +102,6 @@
#include <linux/cpu.h>
#include <linux/sysctl.h>
#include <linux/module.h>
-#include <linux/kmemtrace.h>
#include <linux/rcupdate.h>
#include <linux/string.h>
#include <linux/uaccess.h>
diff --git a/mm/slob.c b/mm/slob.c
index 6a208f81888a..d582171c8101 100644
--- a/mm/slob.c
+++ b/mm/slob.c
@@ -66,8 +66,10 @@
#include <linux/module.h>
#include <linux/rcupdate.h>
#include <linux/list.h>
-#include <linux/kmemtrace.h>
#include <linux/kmemleak.h>
+
+#include <trace/events/kmem.h>
+
#include <asm/atomic.h>
/*
@@ -646,7 +648,6 @@ void kmem_cache_free(struct kmem_cache *c, void *b)
if (unlikely(c->flags & SLAB_DESTROY_BY_RCU)) {
struct slob_rcu *slob_rcu;
slob_rcu = b + (c->size - sizeof(struct slob_rcu));
- INIT_RCU_HEAD(&slob_rcu->head);
slob_rcu->size = c->size;
call_rcu(&slob_rcu->head, kmem_rcu_free);
} else {
diff --git a/mm/slub.c b/mm/slub.c
index fba51d6d4cc4..13fffe1f0f3d 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -17,7 +17,6 @@
#include <linux/slab.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
-#include <linux/kmemtrace.h>
#include <linux/kmemcheck.h>
#include <linux/cpu.h>
#include <linux/cpuset.h>
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index ae007462b7f6..b7e314b1009f 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -2403,7 +2403,7 @@ static int s_show(struct seq_file *m, void *p)
seq_printf(m, " pages=%d", v->nr_pages);
if (v->phys_addr)
- seq_printf(m, " phys=%lx", v->phys_addr);
+ seq_printf(m, " phys=%llx", (unsigned long long)v->phys_addr);
if (v->flags & VM_IOREMAP)
seq_printf(m, " ioremap");
generated by cgit v1.2.3 (git 2.39.0) at 2025-02-06 13:14:45 +0300