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/linux/tools/testing/selftests/memory-hotplug/
A Dmem-on-off-test.sh25 if ! ls $SYSFS/devices/system/memory/memory* > /dev/null 2>&1; then
30 if ! grep -q 1 $SYSFS/devices/system/memory/memory*/removable; then
43 for memory in $SYSFS/devices/system/memory/memory*; do
63 grep -q online $SYSFS/devices/system/memory/memory$1/state
68 grep -q offline $SYSFS/devices/system/memory/memory$1/state
73 echo online > $SYSFS/devices/system/memory/memory$1/state
78 echo offline > $SYSFS/devices/system/memory/memory$1/state
83 local memory=$1
97 local memory=$1
111 local memory=$1
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/linux/Documentation/devicetree/bindings/memory-controllers/fsl/
A Dfsl,ddr.yaml7 title: Freescale DDR memory controller
27 - fsl,bsc9132-memory-controller
28 - fsl,8540-memory-controller
29 - fsl,8541-memory-controller
30 - fsl,8544-memory-controller
31 - fsl,8548-memory-controller
32 - fsl,8555-memory-controller
33 - fsl,8568-memory-controller
45 - fsl,p1020-memory-controller
71 memory-controller@2000 {
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/linux/Documentation/admin-guide/mm/
A Dmemory-hotplug.rst23 downgrading the memory capacity. This dynamic memory resizing, sometimes
69 phase, the memory is visible in memory statistics, such as free and total
142 make use of that memory: the memory block has to be "online".
145 the memory block: the memory block has to be "offlined".
151 memory.
204 memory blocks only.
214 memory blocks; if onlining fails, memory blocks are removed again.
319 however, a memory block might span memory holes. A memory block spanning memory
362 that memory provided by a memory block is managed by
437 memory.
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A Dnumaperf.rst12 A system supports such heterogeneous memory by grouping each memory type
15 are provided as memory only nodes. While memory only nodes do not provide
18 nodes with local memory and a memory only node for each of compute node::
30 CPUs or separate memory I/O devices that can initiate memory requests.
41 memory targets.
53 A memory initiator may have multiple memory targets in the same access
97 memory activity.
105 slower performing memory cached by a smaller higher performing memory. The
111 The term "far memory" is used to denote the last level memory in the
119 level memory, so the higher numbered cache level corresponds to memory
[all …]
A Dconcepts.rst9 systems from MMU-less microcontrollers to supercomputers. The memory
23 the amount of memory that can be installed. The physical memory is not
32 The virtual memory abstracts the details of physical memory from the
37 With virtual memory, each and every memory access uses a virtual
41 memory controller can understand.
69 The address translation requires several memory accesses and memory
106 memory exceeds the maximal addressable size of virtual memory and
146 The `anonymous memory` or `anonymous mappings` represent memory that
163 memory allocated by user space processes etc.
170 reclaimable pages are page cache and anonymous memory.
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/linux/drivers/gpu/drm/nouveau/nvkm/core/
A Dmemory.c39 kfree(memory->tags); in nvkm_memory_tags_put()
40 memory->tags = NULL; in nvkm_memory_tags_put()
103 memory->func = func; in nvkm_memory_ctor()
110 struct nvkm_memory *memory = container_of(kref, typeof(*memory), kref); in nvkm_memory_del() local
112 if (memory->func->dtor) in nvkm_memory_del()
113 memory = memory->func->dtor(memory); in nvkm_memory_del()
114 kfree(memory); in nvkm_memory_del()
122 if (memory) { in nvkm_memory_unref()
131 if (memory) in nvkm_memory_ref()
133 return memory; in nvkm_memory_ref()
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/linux/Documentation/ABI/testing/
A Dsysfs-devices-memory1 What: /sys/devices/system/memory
9 Users: hotplug memory add/remove tools
12 What: /sys/devices/system/memory/memoryX/removable
20 Users: hotplug memory remove tools
40 memory section directory name.
66 Users: hotplug memory remove tools
77 For online memory blocks, it returns in which zone memory
80 and the memory block cannot be offlined.
82 For offline memory blocks, it returns by which zone memory
87 memory block.
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/linux/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/
A Dmem.c31 struct nvkm_memory memory; member
45 return nvkm_mem(memory)->target; in nvkm_mem_target()
49 nvkm_mem_page(struct nvkm_memory *memory) in nvkm_mem_page() argument
75 .memory = &mem->memory, in nvkm_mem_map_dma()
115 .memory = &mem->memory, in nvkm_mem_map_sgl()
170 *pmemory = &mem->memory; in nvkm_mem_new_host()
227 struct nvkm_memory *memory = NULL; in nvkm_mem_new_type() local
232 argv, argc, &memory); in nvkm_mem_new_type()
235 argv, argc, &memory); in nvkm_mem_new_type()
239 nvkm_memory_unref(&memory); in nvkm_mem_new_type()
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/linux/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/
A Dnv50.c124 struct nvkm_memory *memory = &iobj->base.memory; in nv50_instobj_kmap() local
128 u64 size = nvkm_memory_size(memory); in nv50_instobj_kmap()
145 nvkm_memory_addr(&eobj->base.memory), in nv50_instobj_kmap()
146 nvkm_memory_size(&eobj->base.memory), in nv50_instobj_kmap()
186 memory = nv50_instobj(memory)->ram; in nv50_instobj_map()
210 iobj->base.memory.ptrs = NULL; in nv50_instobj_release()
280 nv50_instobj_size(struct nvkm_memory *memory) in nv50_instobj_size() argument
286 nv50_instobj_addr(struct nvkm_memory *memory) in nv50_instobj_addr() argument
292 nv50_instobj_bar2(struct nvkm_memory *memory) in nv50_instobj_bar2() argument
300 nv50_instobj_release(&iobj->base.memory); in nv50_instobj_bar2()
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A Dbase.c34 struct nvkm_memory *memory = &iobj->memory; in nvkm_instobj_load() local
39 if (!(map = nvkm_kmap(memory))) { in nvkm_instobj_load()
45 nvkm_done(memory); in nvkm_instobj_load()
54 struct nvkm_memory *memory = &iobj->memory; in nvkm_instobj_save() local
63 if (!(map = nvkm_kmap(memory))) { in nvkm_instobj_save()
69 nvkm_done(memory); in nvkm_instobj_save()
97 struct nvkm_memory *memory = NULL; in nvkm_instobj_new() local
108 zero, nvkm_memory_addr(memory), nvkm_memory_size(memory)); in nvkm_instobj_new()
118 nvkm_done(memory); in nvkm_instobj_new()
123 nvkm_memory_unref(&memory); in nvkm_instobj_new()
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A Dgk20a.c52 struct nvkm_memory memory; member
116 gk20a_instobj_target(struct nvkm_memory *memory) in gk20a_instobj_target() argument
122 gk20a_instobj_page(struct nvkm_memory *memory) in gk20a_instobj_page() argument
128 gk20a_instobj_addr(struct nvkm_memory *memory) in gk20a_instobj_addr() argument
134 gk20a_instobj_size(struct nvkm_memory *memory) in gk20a_instobj_size() argument
191 const u64 size = nvkm_memory_size(memory); in gk20a_instobj_acquire_iommu()
286 .memory = &node->memory, in gk20a_instobj_map()
295 gk20a_instobj_dtor_dma(struct nvkm_memory *memory) in gk20a_instobj_dtor_dma() argument
395 node->base.memory.ptrs = &gk20a_instobj_ptrs; in gk20a_instobj_ctor_dma()
442 node->base.memory.ptrs = &gk20a_instobj_ptrs; in gk20a_instobj_ctor_iommu()
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A Dnv04.c48 struct nv04_instobj *iobj = nv04_instobj(memory); in nv04_instobj_wr32()
68 nv04_instobj_release(struct nvkm_memory *memory) in nv04_instobj_release() argument
73 nv04_instobj_acquire(struct nvkm_memory *memory) in nv04_instobj_acquire() argument
81 nv04_instobj_size(struct nvkm_memory *memory) in nv04_instobj_size() argument
83 return nv04_instobj(memory)->node->length; in nv04_instobj_size()
87 nv04_instobj_addr(struct nvkm_memory *memory) in nv04_instobj_addr() argument
89 return nv04_instobj(memory)->node->offset; in nv04_instobj_addr()
93 nv04_instobj_target(struct nvkm_memory *memory) in nv04_instobj_target() argument
99 nv04_instobj_dtor(struct nvkm_memory *memory) in nv04_instobj_dtor() argument
129 *pmemory = &iobj->base.memory; in nv04_instobj_new()
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/linux/Documentation/admin-guide/cgroup-v1/
A Dmemory.rst27 uses of the memory controller. The memory controller can be used to
67 memory.usage_in_bytes show current usage for memory
71 memory.limit_in_bytes set/show limit of memory usage
75 memory.max_usage_in_bytes show max memory usage recorded
83 memory.pressure_level set memory pressure notifications
236 memsw means memory+swap. Usage of memory+swap is limited by
397 # mount -t cgroup none /sys/fs/cgroup/memory -o memory
406 # echo 4M > /sys/fs/cgroup/memory/0/memory.limit_in_bytes
421 # cat /sys/fs/cgroup/memory/0/memory.limit_in_bytes
426 # cat /sys/fs/cgroup/memory/0/memory.usage_in_bytes
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/linux/Documentation/vm/
A Dmemory-model.rst19 memory models it supports, what the default memory model is and
38 memory.
48 memory to the page allocator.
67 as hot-plug and hot-remove of the physical memory, alternative memory
69 the memory map for larger systems.
100 all the memory sections.
103 initialize the memory sections and the memory maps.
137 allocate memory map on the persistent memory device.
158 subject to its memory ranges being exposed through the sysfs memory
172 events related to device-memory, typically GPU memory. See
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A Dhmm.rst8 memory like GPU on board memory) into regular kernel path, with the cornerstone
36 driver and regular application memory (private anonymous, shared memory, or
62 various memory copies.
79 buses only allow basic memory access from device to main memory; even cache
87 memory and cannot perform atomic operations on it. Thus device memory cannot
102 access any memory but we must also permit any memory to be migrated to device
130 memory for the device memory and second to perform migration. Policy decisions
327 system memory and device private memory.
444 back from device memory to regular memory cannot fail because it would
446 get more experience in how device memory is used and its impact on memory
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A Dnuma.rst14 or more CPUs, local memory, and/or IO buses. For brevity and to
34 cell containing the target memory. For example, access to memory by CPUs
41 memory bandwidth. However, to achieve scalable memory bandwidth, system and
43 [cache misses] to be to "local" memory--memory on the same cell, if any--or
44 to the closest cell with memory.
52 CPUs, memory and/or IO buses. And, again, memory accesses to memory on
72 For each node with memory, Linux constructs an independent memory management
112 allocation behavior using Linux NUMA memory policy. [see
127 does contain memory overflows.
132 a subsystem allocates per CPU memory resources, for example.
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/linux/arch/arm64/boot/dts/ti/
A Dk3-j721e-som-p0.dtsi11 memory@80000000 {
12 device_type = "memory";
18 reserved_memory: reserved-memory {
35 mcu_r5fss0_core0_memory_region: r5f-memory@a0100000 {
101 c66_1_dma_memory_region: c66-dma-memory@a6000000 {
107 c66_0_memory_region: c66-memory@a6100000 {
119 c66_1_memory_region: c66-memory@a7100000 {
131 c71_0_memory_region: c71-memory@a8100000 {
321 memory-region = <&c66_0_dma_memory_region>,
327 memory-region = <&c66_1_dma_memory_region>,
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/linux/Documentation/core-api/
A Dmemory-hotplug.rst17 to allocate from the new memory.
24 allocate pages from the new memory.
28 longer possible from the memory but some of the memory to be offlined
30 subsystem from the indicated memory block.
34 the memory block that we attempted to offline.
37 Generated after offlining memory is complete.
63 - start_pfn is start_pfn of online/offline memory.
89 When adding/removing memory that uses memory block devices (i.e. ordinary RAM),
94 space once memory has been fully added. And when removing memory, we
100 memory faster than expected:
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/linux/drivers/staging/octeon/
A Dethernet-mem.c49 char *memory; in cvm_oct_free_hw_skbuff() local
52 memory = cvmx_fpa_alloc(pool); in cvm_oct_free_hw_skbuff()
53 if (memory) { in cvm_oct_free_hw_skbuff()
59 } while (memory); in cvm_oct_free_hw_skbuff()
79 char *memory; in cvm_oct_fill_hw_memory() local
94 memory = kmalloc(size + 256, GFP_ATOMIC); in cvm_oct_fill_hw_memory()
95 if (unlikely(!memory)) { in cvm_oct_fill_hw_memory()
101 *((char **)fpa - 1) = memory; in cvm_oct_fill_hw_memory()
116 char *memory; in cvm_oct_free_hw_memory() local
124 memory = *((char **)fpa - 1); in cvm_oct_free_hw_memory()
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/linux/Documentation/userspace-api/media/v4l/
A Ddev-mem2mem.rst9 A V4L2 memory-to-memory device can compress, decompress, transform, or
10 otherwise convert video data from one format into another format, in memory.
11 Such memory-to-memory devices set the ``V4L2_CAP_VIDEO_M2M`` or
12 ``V4L2_CAP_VIDEO_M2M_MPLANE`` capability. Examples of memory-to-memory
16 A memory-to-memory video node acts just like a normal video node, but it
17 supports both output (sending frames from memory to the hardware)
19 memory) stream I/O. An application will have to setup the stream I/O for
23 Memory-to-memory devices function as a shared resource: you can
32 One of the most common memory-to-memory device is the codec. Codecs
35 See :ref:`codec-controls`. More details on how to use codec memory-to-memory
/linux/Documentation/powerpc/
A Dfirmware-assisted-dump.rst50 low memory regions (boot memory) from source to destination area.
54 The term 'boot memory' means size of the low memory chunk
56 booted with restricted memory. By default, the boot memory
68 - After the low memory (boot memory) area has been saved, the
78 boot memory size effectively booting with restricted memory
90 memory back to general use, except the memory required for
134 memory is held.
151 kernel memory and most of the user space memory except the user pages
156 Low memory Top of memory
185 Low memory Top of memory
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/linux/Documentation/admin-guide/mm/damon/
A Dreclaim.rst8 be used for proactive and lightweight reclamation under light memory pressure.
15 On general memory over-committed systems, proactively reclaiming cold pages
22 memory to host, and the host reallocates the reported memory to other guests.
23 As a result, the memory of the systems are fully utilized. However, the
36 out memory regions that didn't accessed longer time first. System
94 Limit of size of memory for the reclamation in bytes.
124 Free memory rate (per thousand) for the high watermark.
133 Free memory rate (per thousand) for the middle watermark.
142 Free memory rate (per thousand) for the low watermark.
188 Start of target memory region in physical address.
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/linux/drivers/dax/
A DKconfig7 tristate "DAX: direct access to differentiated memory"
18 latency...) memory via an mmap(2) capable character
20 platform memory resource that is differentiated from the
21 baseline memory pool. Mappings of a /dev/daxX.Y device impose
25 tristate "PMEM DAX: direct access to persistent memory"
29 Support raw access to persistent memory. Note that this
30 driver consumes memory ranges allocated and exported by the
42 memory. For example, a high bandwidth memory pool. The
44 memory from typical usage by default. This driver creates
57 tristate "KMEM DAX: volatile-use of persistent memory"
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/linux/drivers/gpu/drm/nouveau/nvkm/subdev/fb/
A Dram.c31 struct nvkm_memory memory; member
41 struct nvkm_vram *vram = nvkm_vram(memory); in nvkm_vram_map()
43 .memory = &vram->memory, in nvkm_vram_map()
52 nvkm_vram_size(struct nvkm_memory *memory) in nvkm_vram_size() argument
58 nvkm_vram_addr(struct nvkm_memory *memory) in nvkm_vram_addr() argument
60 struct nvkm_vram *vram = nvkm_vram(memory); in nvkm_vram_addr()
67 nvkm_vram_page(struct nvkm_memory *memory) in nvkm_vram_page() argument
69 return nvkm_vram(memory)->page; in nvkm_vram_page()
73 nvkm_vram_target(struct nvkm_memory *memory) in nvkm_vram_target() argument
79 nvkm_vram_dtor(struct nvkm_memory *memory) in nvkm_vram_dtor() argument
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/linux/drivers/memory/tegra/
A D.built-in.a.cmd1 …memory/tegra/built-in.a := echo >/dev/null; rm -f drivers/memory/tegra/built-in.a; /usr/bin/ccache…

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