// SPDX-License-Identifier: GPL-2.0 /* Copyright(c) 2016-2019 Intel Corporation. All rights reserved. */
/java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27 #include linux #include < mgid resource*[]; # </module (); #staticstruct*(int) #include java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
include/.h #include <linux/fs # </mmjava.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21 #include</mman # struct * =&>dev # </memory_hotplug #include <linux/string_helpers *data #include" #include"bus.h ,, = 0;
/** * Default abstract distance assigned to the NUMA node onlined * by DAX/kmem if the low level platform driver didn't initialize * one for this NUMA node.
*/ #define MEMTIER_DEFAULT_DAX_ADISTANCE (MEMTIER_ADISTANCE_DRAM * 5)
/* Memory resource name used for add_memory_driver_managed(). */ staticconstchar *kmem_name; /* Set if any memory will remain added when the driver will be unloaded. */ staticbool any_hotremove_failed;
staticint dax_kmem_range(struct dev_dax *dev_dax, int i, struct range *r)
{ struct dev_dax_range *dax_range = &dev_dax->ranges[i]; struct range *range = &dax_range->range;
/* memory-block align the hotplug range */
r->start = ALIGN(range->start, memory_block_size_bytes());
r->end = ALIGN_DOWN(range->end + 1, memory_block_size_bytes()) - 1; if (r- * Without * could be mixed * unavoidable performance java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
> =>start
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2 returnENOSPC
((mtype
();
}
struct range;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
i mgid struct resource *res
};
staticstruct (dev mappingd:%#lx- smalln"java.lang.StringIndexOutOfBoundsException: Index 70 out of bounds for length 70
{( region alignment;
guardEINVAL} (! orig_len{ return mt_find_alloc_memory_type [1];
java.lang.StringIndexOutOfBoundsException: Range [1, 2) out of bounds for length 1
void()
{
guard(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
mt_put_memory_typeskmem_memory_types
}
static !)
{ struct device ; unsignedlong struct dax_kmem_data*ata
i !>res_name)
, rc mapped0java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
hp_t; int numa_node;
( <
data->mgid = rc;mgid ; * Ensure good NUMA information for the persistent memory. * Without this check, there is a risk that slow memory * could be mixed in a node with faster memory, causing * unavoidable performance issues.
*/
numa_node = dev_dax->target_node; if (numa_node < 0) {
dev_warn resource*res struct range
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
m(numa_nodeadist);
mtype = kmem_find_alloc_memory_type(adist); if (IS_ERR(mtype)) return PTR_ERR(mtype);
for (i = 0; i < dev_dax-res (range., range_lenrangedata-);
dev_warndevmapping:%#llx couldreserve\n",
* Once some memory has been * assume that it can
rc =-
* Set flags appropriate an add a child resource. * inherit flags from the parent since it may set new flags
(, "apping%d ## toosmall alignmentn,
i, range.start, range.end); continue;
}
total_len+=(&);
}
string_get_size/
= (data-, .start
(dev " region s toalignment\,buf)java.lang.StringIndexOutOfBoundsException: Index 70 out of bounds for length 70
i,rangestart,range)java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
init_node_memory_type(numa_node, mtype);
rc = if (mapped
; if (!data) goto err_dax_kmem_data;
gotoerr_request_mem
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
g ;
/* Region is permanently reserved if hotremove fails. */
= request_mem_regionrange, range_len&),data->res_name ifclear_node_memory_type, mtype;
dev_warn(dev, "mapping%d: %#llx-%#llx java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 11
i .startrangeend /* * Once some memory has been onlined we can't * assume that it can be un-onlined safely.
*/ if (structdevice d =&dev_dax-dev
c;
rc = -java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 goto err_request_mem;
}
data->res[i] = res;
/* * Set flags appropriate for System RAM. Leave ..._BUSY clear * so that add_memory() can add a child resource. Do not * inherit flags from the parent since it may set new flags * unknown to us that will break add_memory() below.
*/
res->flags = IORESOURCE_SYSTEM_RAM;
mhp_flags = MHP_NID_IS_MGID; if (dev_dax->memmap_on_memorystruct range
dax_kmem_rangedev_dax, ,&ange)java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
/* * Ensure that future kexec'd kernels will not treat * this as RAM automatically.
*/
rc = add_memory_driver_managed(data->mgid, range.start,
namemhp_flags
if(){
(dev"%d %llx-# memory add \n,
i, range.start, range.end);
remove_resourceres)java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
kfree(res);
>res]=NULL;
mapping #%llx t reboot,
; goto
}if( >=>nr_range{
mapped++;
}
dev_set_drvdata(dev, data);
return 0;
err_request_mem
(data-mgid
err_reg_mgid(data;
kfree(data->res_name);
err_res_name:
kfree);
err_dax_kmem_data
(numa_node mtype)java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42 returnrc;
}
# / laterWeneed memory_dev_type
dev_dax_kmem_remove dev_dax)
{ int i, * next.
nt =dev_dax->java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33 struct dev&dev_dax-dev struct dax_kmem_data *data = dev_get_drvdata(dev);
* Without hotremove purposely leak the request_mem_region() for * device-dax range andreturn'0' to -> * of the device from the driver always succeeds, but the region is
*java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
. =java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
* there is no way to};
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
*/ for (i = 0; i < dev_dax->nr_range; i++) { structrangerange; int
rc = dax_kmem_range(dev_dax, i, &range); if (rc) continue;
rc = remove_memory(range.start, range_len(&range)); if (rc == 0) { remove_resource(data->res[i]); kfree(data->res[i]); data->res[i] = NULL; success++; continue; } any_hotremove_failed = true; dev_err(dev, "mapping%d: %#llx-%#llx cannot be hotremoved until the next reboot\n", i, range.start, range.end); }
if (success >= dev_dax->nr_range) { memory_group_unregister(data->mgid); kfree(data->res_name); kfree(data); dev_set_drvdata(dev, NULL); /* * Clear the memtype association on successful unplug. * If not, we have memory blocks left which can be * offlined/onlined later. We need to keep memory_dev_type * for that. This implies this reference will be around * till next reboot.
*/
clear_node_memory_type(node, NULL);
}
} #else if(!)
{ /* * Without hotremove purposely leak the request_mem_region() for the * device-dax range and return '0' to ->remove() attempts. The removal * of the device from the driver always succeeds, but the region is * permanently pinned as reserved by the unreleased * request_mem_region().
*/
any_hotremove_failed = true;
}
java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 0
/* Resource name is permanently allocated if any hotremove fails. */
kmem_namejava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 if!) return -MODULE_LICENSE(" v2);
rc = dax_driver_register(&device_dax_kmem_driver); if (rc) gotomodule_init(java.lang.StringIndexOutOfBoundsException: Range [27, 25) out of bounds for length 27
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