summaryrefslogtreecommitdiffstats
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/acpi/acpi_memhotplug.c3
-rw-r--r--drivers/base/memory.c3
-rw-r--r--drivers/base/node.c33
-rw-r--r--drivers/block/zram/zram_drv.c2
-rw-r--r--drivers/dax/kmem.c50
-rw-r--r--drivers/hv/hv_balloon.c2
-rw-r--r--drivers/infiniband/core/uverbs_main.c3
-rw-r--r--drivers/rapidio/devices/rio_mport_cdev.c18
-rw-r--r--drivers/s390/char/sclp_cmd.c2
-rw-r--r--drivers/vfio/pci/vfio_pci.c38
-rw-r--r--drivers/virtio/virtio_mem.c3
-rw-r--r--drivers/xen/balloon.c2
12 files changed, 95 insertions, 64 deletions
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index ad6e90fbc813..b02fd51e5589 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -194,7 +194,8 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
if (node < 0)
node = memory_add_physaddr_to_nid(info->start_addr);
- result = __add_memory(node, info->start_addr, info->length);
+ result = __add_memory(node, info->start_addr, info->length,
+ MHP_NONE);
/*
* If the memory block has been used by the kernel, add_memory()
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index adf828dfccf0..eef4ffb6122c 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -432,7 +432,8 @@ static ssize_t probe_store(struct device *dev, struct device_attribute *attr,
nid = memory_add_physaddr_to_nid(phys_addr);
ret = __add_memory(nid, phys_addr,
- MIN_MEMORY_BLOCK_SIZE * sections_per_block);
+ MIN_MEMORY_BLOCK_SIZE * sections_per_block,
+ MHP_NONE);
if (ret)
goto out;
diff --git a/drivers/base/node.c b/drivers/base/node.c
index 43d21f9e88b1..6ffa470e2984 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -772,8 +772,8 @@ static int __ref get_nid_for_pfn(unsigned long pfn)
return pfn_to_nid(pfn);
}
-static int do_register_memory_block_under_node(int nid,
- struct memory_block *mem_blk)
+static void do_register_memory_block_under_node(int nid,
+ struct memory_block *mem_blk)
{
int ret;
@@ -786,12 +786,19 @@ static int do_register_memory_block_under_node(int nid,
ret = sysfs_create_link_nowarn(&node_devices[nid]->dev.kobj,
&mem_blk->dev.kobj,
kobject_name(&mem_blk->dev.kobj));
- if (ret)
- return ret;
+ if (ret && ret != -EEXIST)
+ dev_err_ratelimited(&node_devices[nid]->dev,
+ "can't create link to %s in sysfs (%d)\n",
+ kobject_name(&mem_blk->dev.kobj), ret);
- return sysfs_create_link_nowarn(&mem_blk->dev.kobj,
+ ret = sysfs_create_link_nowarn(&mem_blk->dev.kobj,
&node_devices[nid]->dev.kobj,
kobject_name(&node_devices[nid]->dev.kobj));
+ if (ret && ret != -EEXIST)
+ dev_err_ratelimited(&mem_blk->dev,
+ "can't create link to %s in sysfs (%d)\n",
+ kobject_name(&node_devices[nid]->dev.kobj),
+ ret);
}
/* register memory section under specified node if it spans that node */
@@ -827,7 +834,8 @@ static int register_mem_block_under_node_early(struct memory_block *mem_blk,
if (page_nid != nid)
continue;
- return do_register_memory_block_under_node(nid, mem_blk);
+ do_register_memory_block_under_node(nid, mem_blk);
+ return 0;
}
/* mem section does not span the specified node */
return 0;
@@ -842,7 +850,8 @@ static int register_mem_block_under_node_hotplug(struct memory_block *mem_blk,
{
int nid = *(int *)arg;
- return do_register_memory_block_under_node(nid, mem_blk);
+ do_register_memory_block_under_node(nid, mem_blk);
+ return 0;
}
/*
@@ -860,8 +869,8 @@ void unregister_memory_block_under_nodes(struct memory_block *mem_blk)
kobject_name(&node_devices[mem_blk->nid]->dev.kobj));
}
-int link_mem_sections(int nid, unsigned long start_pfn, unsigned long end_pfn,
- enum meminit_context context)
+void link_mem_sections(int nid, unsigned long start_pfn, unsigned long end_pfn,
+ enum meminit_context context)
{
walk_memory_blocks_func_t func;
@@ -870,9 +879,9 @@ int link_mem_sections(int nid, unsigned long start_pfn, unsigned long end_pfn,
else
func = register_mem_block_under_node_early;
- return walk_memory_blocks(PFN_PHYS(start_pfn),
- PFN_PHYS(end_pfn - start_pfn), (void *)&nid,
- func);
+ walk_memory_blocks(PFN_PHYS(start_pfn), PFN_PHYS(end_pfn - start_pfn),
+ (void *)&nid, func);
+ return;
}
#ifdef CONFIG_HUGETLBFS
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index bff3d4021c18..029403c18ca3 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -1270,7 +1270,7 @@ static int __zram_bvec_read(struct zram *zram, struct page *page, u32 index,
zram_slot_unlock(zram, index);
/* Should NEVER happen. Return bio error if it does. */
- if (unlikely(ret))
+ if (WARN_ON(ret))
pr_err("Decompression failed! err=%d, page=%u\n", ret, index);
return ret;
diff --git a/drivers/dax/kmem.c b/drivers/dax/kmem.c
index 6c933f2b604e..b4368c5b6a0c 100644
--- a/drivers/dax/kmem.c
+++ b/drivers/dax/kmem.c
@@ -35,11 +35,17 @@ static int dax_kmem_range(struct dev_dax *dev_dax, int i, struct range *r)
return 0;
}
+struct dax_kmem_data {
+ const char *res_name;
+ struct resource *res[];
+};
+
static int dev_dax_kmem_probe(struct dev_dax *dev_dax)
{
struct device *dev = &dev_dax->dev;
+ struct dax_kmem_data *data;
+ int rc = -ENOMEM;
int i, mapped = 0;
- char *res_name;
int numa_node;
/*
@@ -55,14 +61,17 @@ static int dev_dax_kmem_probe(struct dev_dax *dev_dax)
return -EINVAL;
}
- res_name = kstrdup(dev_name(dev), GFP_KERNEL);
- if (!res_name)
+ data = kzalloc(sizeof(*data) + sizeof(struct resource *) * dev_dax->nr_range, GFP_KERNEL);
+ if (!data)
return -ENOMEM;
+ data->res_name = kstrdup(dev_name(dev), GFP_KERNEL);
+ if (!data->res_name)
+ goto err_res_name;
+
for (i = 0; i < dev_dax->nr_range; i++) {
struct resource *res;
struct range range;
- int rc;
rc = dax_kmem_range(dev_dax, i, &range);
if (rc) {
@@ -72,7 +81,7 @@ static int dev_dax_kmem_probe(struct dev_dax *dev_dax)
}
/* Region is permanently reserved if hotremove fails. */
- res = request_mem_region(range.start, range_len(&range), res_name);
+ res = request_mem_region(range.start, range_len(&range), data->res_name);
if (!res) {
dev_warn(dev, "mapping%d: %#llx-%#llx could not reserve region\n",
i, range.start, range.end);
@@ -82,9 +91,10 @@ static int dev_dax_kmem_probe(struct dev_dax *dev_dax)
*/
if (mapped)
continue;
- kfree(res_name);
- return -EBUSY;
+ rc = -EBUSY;
+ goto err_request_mem;
}
+ data->res[i] = res;
/*
* Set flags appropriate for System RAM. Leave ..._BUSY clear
@@ -99,23 +109,30 @@ static int dev_dax_kmem_probe(struct dev_dax *dev_dax)
* this as RAM automatically.
*/
rc = add_memory_driver_managed(numa_node, range.start,
- range_len(&range), kmem_name);
+ range_len(&range), kmem_name, MHP_NONE);
if (rc) {
dev_warn(dev, "mapping%d: %#llx-%#llx memory add failed\n",
i, range.start, range.end);
- release_mem_region(range.start, range_len(&range));
+ release_resource(res);
+ kfree(res);
+ data->res[i] = NULL;
if (mapped)
continue;
- kfree(res_name);
- return rc;
+ goto err_request_mem;
}
mapped++;
}
- dev_set_drvdata(dev, res_name);
+ dev_set_drvdata(dev, data);
return 0;
+
+err_request_mem:
+ kfree(data->res_name);
+err_res_name:
+ kfree(data);
+ return rc;
}
#ifdef CONFIG_MEMORY_HOTREMOVE
@@ -123,7 +140,7 @@ static int dev_dax_kmem_remove(struct dev_dax *dev_dax)
{
int i, success = 0;
struct device *dev = &dev_dax->dev;
- const char *res_name = dev_get_drvdata(dev);
+ struct dax_kmem_data *data = dev_get_drvdata(dev);
/*
* We have one shot for removing memory, if some memory blocks were not
@@ -142,7 +159,9 @@ static int dev_dax_kmem_remove(struct dev_dax *dev_dax)
rc = remove_memory(dev_dax->target_node, range.start,
range_len(&range));
if (rc == 0) {
- release_mem_region(range.start, range_len(&range));
+ release_resource(data->res[i]);
+ kfree(data->res[i]);
+ data->res[i] = NULL;
success++;
continue;
}
@@ -153,7 +172,8 @@ static int dev_dax_kmem_remove(struct dev_dax *dev_dax)
}
if (success >= dev_dax->nr_range) {
- kfree(res_name);
+ kfree(data->res_name);
+ kfree(data);
dev_set_drvdata(dev, NULL);
}
diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c
index 32e3bc0aa665..b64d2efbefe7 100644
--- a/drivers/hv/hv_balloon.c
+++ b/drivers/hv/hv_balloon.c
@@ -726,7 +726,7 @@ static void hv_mem_hot_add(unsigned long start, unsigned long size,
nid = memory_add_physaddr_to_nid(PFN_PHYS(start_pfn));
ret = add_memory(nid, PFN_PHYS((start_pfn)),
- (HA_CHUNK << PAGE_SHIFT));
+ (HA_CHUNK << PAGE_SHIFT), MEMHP_MERGE_RESOURCE);
if (ret) {
pr_err("hot_add memory failed error is %d\n", ret);
diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
index 37794d88b1f3..a4ba0b87d6de 100644
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -845,8 +845,6 @@ void uverbs_user_mmap_disassociate(struct ib_uverbs_file *ufile)
* will only be one mm, so no big deal.
*/
mmap_read_lock(mm);
- if (!mmget_still_valid(mm))
- goto skip_mm;
mutex_lock(&ufile->umap_lock);
list_for_each_entry_safe (priv, next_priv, &ufile->umaps,
list) {
@@ -865,7 +863,6 @@ void uverbs_user_mmap_disassociate(struct ib_uverbs_file *ufile)
}
}
mutex_unlock(&ufile->umap_lock);
- skip_mm:
mmap_read_unlock(mm);
mmput(mm);
}
diff --git a/drivers/rapidio/devices/rio_mport_cdev.c b/drivers/rapidio/devices/rio_mport_cdev.c
index a30342942e26..94331d999d27 100644
--- a/drivers/rapidio/devices/rio_mport_cdev.c
+++ b/drivers/rapidio/devices/rio_mport_cdev.c
@@ -871,15 +871,16 @@ rio_dma_transfer(struct file *filp, u32 transfer_mode,
rmcd_error("pin_user_pages_fast err=%ld",
pinned);
nr_pages = 0;
- } else
+ } else {
rmcd_error("pinned %ld out of %ld pages",
pinned, nr_pages);
+ /*
+ * Set nr_pages up to mean "how many pages to unpin, in
+ * the error handler:
+ */
+ nr_pages = pinned;
+ }
ret = -EFAULT;
- /*
- * Set nr_pages up to mean "how many pages to unpin, in
- * the error handler:
- */
- nr_pages = pinned;
goto err_pg;
}
@@ -1679,6 +1680,7 @@ static int rio_mport_add_riodev(struct mport_cdev_priv *priv,
struct rio_dev *rdev;
struct rio_switch *rswitch = NULL;
struct rio_mport *mport;
+ struct device *dev;
size_t size;
u32 rval;
u32 swpinfo = 0;
@@ -1693,8 +1695,10 @@ static int rio_mport_add_riodev(struct mport_cdev_priv *priv,
rmcd_debug(RDEV, "name:%s ct:0x%x did:0x%x hc:0x%x", dev_info.name,
dev_info.comptag, dev_info.destid, dev_info.hopcount);
- if (bus_find_device_by_name(&rio_bus_type, NULL, dev_info.name)) {
+ dev = bus_find_device_by_name(&rio_bus_type, NULL, dev_info.name);
+ if (dev) {
rmcd_debug(RDEV, "device %s already exists", dev_info.name);
+ put_device(dev);
return -EEXIST;
}
diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c
index a864b21af602..f6e97f0830f6 100644
--- a/drivers/s390/char/sclp_cmd.c
+++ b/drivers/s390/char/sclp_cmd.c
@@ -406,7 +406,7 @@ static void __init add_memory_merged(u16 rn)
if (!size)
goto skip_add;
for (addr = start; addr < start + size; addr += block_size)
- add_memory(0, addr, block_size);
+ add_memory(0, addr, block_size, MHP_NONE);
skip_add:
first_rn = rn;
num = 1;
diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c
index 1ab1f5cda4ac..b0f4b92a87ed 100644
--- a/drivers/vfio/pci/vfio_pci.c
+++ b/drivers/vfio/pci/vfio_pci.c
@@ -1480,31 +1480,29 @@ static int vfio_pci_zap_and_vma_lock(struct vfio_pci_device *vdev, bool try)
} else {
mmap_read_lock(mm);
}
- if (mmget_still_valid(mm)) {
- if (try) {
- if (!mutex_trylock(&vdev->vma_lock)) {
- mmap_read_unlock(mm);
- mmput(mm);
- return 0;
- }
- } else {
- mutex_lock(&vdev->vma_lock);
+ if (try) {
+ if (!mutex_trylock(&vdev->vma_lock)) {
+ mmap_read_unlock(mm);
+ mmput(mm);
+ return 0;
}
- list_for_each_entry_safe(mmap_vma, tmp,
- &vdev->vma_list, vma_next) {
- struct vm_area_struct *vma = mmap_vma->vma;
+ } else {
+ mutex_lock(&vdev->vma_lock);
+ }
+ list_for_each_entry_safe(mmap_vma, tmp,
+ &vdev->vma_list, vma_next) {
+ struct vm_area_struct *vma = mmap_vma->vma;
- if (vma->vm_mm != mm)
- continue;
+ if (vma->vm_mm != mm)
+ continue;
- list_del(&mmap_vma->vma_next);
- kfree(mmap_vma);
+ list_del(&mmap_vma->vma_next);
+ kfree(mmap_vma);
- zap_vma_ptes(vma, vma->vm_start,
- vma->vm_end - vma->vm_start);
- }
- mutex_unlock(&vdev->vma_lock);
+ zap_vma_ptes(vma, vma->vm_start,
+ vma->vm_end - vma->vm_start);
}
+ mutex_unlock(&vdev->vma_lock);
mmap_read_unlock(mm);
mmput(mm);
}
diff --git a/drivers/virtio/virtio_mem.c b/drivers/virtio/virtio_mem.c
index 834b7c13ef3d..ba4de598f663 100644
--- a/drivers/virtio/virtio_mem.c
+++ b/drivers/virtio/virtio_mem.c
@@ -424,7 +424,8 @@ static int virtio_mem_mb_add(struct virtio_mem *vm, unsigned long mb_id)
dev_dbg(&vm->vdev->dev, "adding memory block: %lu\n", mb_id);
return add_memory_driver_managed(nid, addr, memory_block_size_bytes(),
- vm->resource_name);
+ vm->resource_name,
+ MEMHP_MERGE_RESOURCE);
}
/*
diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c
index 51427c752b37..b57b2067ecbf 100644
--- a/drivers/xen/balloon.c
+++ b/drivers/xen/balloon.c
@@ -331,7 +331,7 @@ static enum bp_state reserve_additional_memory(void)
mutex_unlock(&balloon_mutex);
/* add_memory_resource() requires the device_hotplug lock */
lock_device_hotplug();
- rc = add_memory_resource(nid, resource);
+ rc = add_memory_resource(nid, resource, MEMHP_MERGE_RESOURCE);
unlock_device_hotplug();
mutex_lock(&balloon_mutex);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-28 05:13:10 +0100