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Searched refs:reservation (Results 1 – 25 of 39) sorted by relevance

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/linux/Documentation/block/
H A Dpr.rst26 Only the initiator that owns the reservation can write to the
30 Only the initiator that owns the reservation can access the
44 All initiators with a registered key are considered reservation
46 Please reference the SPC spec on the meaning of a reservation
51 All initiators with a registered key are considered reservation
53 Please reference the SPC spec on the meaning of a reservation
63 This ioctl command registers a new reservation if the new_key argument
64 is non-null. If no existing reservation exists old_key must be zero,
65 if an existing reservation should be replaced old_key must contain
66 the old reservation key.
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/linux/Documentation/mm/
H A Dhugetlbfs_reserv.rst65 These are stored in the bottom bits of the reservation map pointer.
76 reservation must be restored when the huge page is freed. More
86 semantics of the reservation map is significantly different for the two types
89 - For private mappings, the reservation map hangs off the VMA structure.
92 - For shared mappings, the reservation map hangs off the inode. Specifically,
95 contains a reservation map. As a result, the reservation map is allocated
122 in which reservations are represented in the reservation map.
124 - For shared mappings, an entry in the reservation map indicates a reservation
126 consumed, the reservation map is not modified.
127 - For private mappings, the lack of an entry in the reservation map indicates
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/linux/drivers/xen/
H A Dmem-reservation.c88 struct xen_memory_reservation reservation = { in xenmem_reservation_increase() local
95 set_xen_guest_handle(reservation.extent_start, frames); in xenmem_reservation_increase()
96 reservation.nr_extents = count; in xenmem_reservation_increase()
97 return HYPERVISOR_memory_op(XENMEM_populate_physmap, &reservation); in xenmem_reservation_increase()
104 struct xen_memory_reservation reservation = { in xenmem_reservation_decrease() local
111 set_xen_guest_handle(reservation.extent_start, frames); in xenmem_reservation_decrease()
112 reservation.nr_extents = count; in xenmem_reservation_decrease()
113 return HYPERVISOR_memory_op(XENMEM_decrease_reservation, &reservation); in xenmem_reservation_decrease()
H A DMakefile4 obj-y += mem-reservation.o
/linux/Documentation/arch/arm64/
H A Dkdump.rst2 crashkernel memory reservation on arm64
21 large chunk of memomy can be found. The low memory reservation needs to
61 the reservation in high memory succeeds, a default size reservation in
79 attempted from the high memory region. If the reservation succeeds, the
80 low memory reservation will be done subsequently.
82 If reservation from the high memory failed, the kernel falls back to
84 If it succeeds, no further reservation for low memory is needed.
89 reservation will be done automatically.
92 reservation is omitted intentionally.
/linux/Documentation/admin-guide/cgroup-v1/
H A Dhugetlb.rst27 ….failcnt # show the number of allocation failure due to HugeTLB reservation limit
95 group and enforces the controller limit at reservation time and at the fault of
96 HugeTLB memory for which no reservation exists. Since reservation limits are
97 enforced at reservation time (on mmap or shget), reservation limits never causes
99 MAP_NORESERVE allocations, the reservation limit behaves the same as the fault
104 reservation limits are enforced at reservation time (on mmap or shget), and
116 For shared HugeTLB memory, both HugeTLB reservation and page faults are charged
122 caused the reservation or fault has exited.
131 - the reservation charges remain on the offline HugeTLB cgroup.
/linux/drivers/android/binder/range_alloc/
H A Dtree.rs228 let (reservation, free_node_res) = desc.try_change_state(|state| match state { in reservation_abort()
229 Some((DescriptorState::Reserved(reservation), free_node_res)) => { in reservation_abort()
230 (None, Ok((reservation, free_node_res))) in reservation_abort()
250 let free_oneway_space_add = if reservation.is_oneway { size } else { 0 }; in reservation_abort()
313 Some((DescriptorState::Reserved(reservation), free_node_res)) => ( in reservation_commit()
315 DescriptorState::Allocated(reservation.allocate(data.take())), in reservation_commit()
339 let (reservation, data) = allocation.deallocate(); in reserve_existing()
340 let debug_id = reservation.debug_id; in reserve_existing()
342 Some((DescriptorState::Reserved(reservation), free_node_res)), in reserve_existing()
/linux/Documentation/ABI/testing/
H A Dsysfs-fs-xfs24 represents the total log reservation of all currently
34 represents the total log reservation of all currently
H A Dsysfs-kernel-kexec-kdump37 reservation by writing a smaller value, and the reclaimed
/linux/tools/testing/selftests/mm/
H A Dcharge_reserved_hugetlb.sh133 echo Waiting for hugetlb memory reservation to reach size $size.
429 echo Memory charged to reservation=$reserved_difference
458 echo Memory charged to reservation=$reserved_difference
473 echo Test more than reservation case.
/linux/Documentation/ABI/stable/
H A Dsysfs-devices-system-xen_memory47 memory reservation to.
62 reservation.
/linux/arch/powerpc/boot/dts/
H A Dmicrowatt.dts119 reservation-granule-size = <64>;
149 reservation-granule-size = <64>;
/linux/arch/x86/xen/
H A Dsetup.c198 struct xen_memory_reservation reservation = { in xen_free_mfn() local
204 set_xen_guest_handle(reservation.extent_start, &mfn); in xen_free_mfn()
205 reservation.nr_extents = 1; in xen_free_mfn()
207 return HYPERVISOR_memory_op(XENMEM_decrease_reservation, &reservation); in xen_free_mfn()
/linux/drivers/gpu/drm/omapdrm/
H A DTODO13 . This can be handled by the dma-buf fence/reservation stuff when it
/linux/Documentation/locking/
H A Dww-mutex-design.rst29 to be locked, the caller would be assigned a unique reservation id/ticket,
31 associated with a execbuf, the one with the lowest reservation ticket (i.e.
32 the oldest task) wins, and the one with the higher reservation id (i.e. the
36 In the RDBMS literature, a reservation ticket is associated with a transaction.
64 trying to acquire locks doesn't grab a new reservation id, but keeps the one it
/linux/drivers/nvdimm/
H A DKconfig132 reservation of persistent memory rather than limited /
133 precious DRAM. However, that reservation needs to persist for
/linux/Documentation/ABI/obsolete/
H A Dsysfs-kernel-kexec-kdump47 reservation by writing a smaller value, and the reclaimed
/linux/Documentation/bpf/
H A Dringbuf.rst76 - if there is no more space left in ring buffer, reservation fails, no
153 reservation, in NMI context, ``bpf_ringbuf_reserve()`` might fail to get
154 a lock, in which case reservation will fail even if ring buffer is not full.
/linux/drivers/dax/
H A DKconfig42 driver to override the reservation and add them to kernel
/linux/rust/kernel/
H A Drbtree.rs1337 pub fn insert(self, value: V, reservation: RBTreeNodeReservation<K, V>) -> &'a mut V { in insert()
1338 self.raw.insert(reservation.into_node(self.key, value)) in insert()
/linux/Documentation/admin-guide/mm/
H A Dkho.rst52 an early memory reservation, the new kernel will have that memory at the
/linux/Documentation/mm/damon/
H A Dmaintainer-profile.rst98 Schedules and reservation status are available at the Google `doc
/linux/Documentation/filesystems/iomap/
H A Ddesign.rst192 ``->iomap_end`` function must delete the reservation.
220 If a write fails and the mapping is a space reservation, the
221 reservation must be deleted.
/linux/Documentation/gpu/
H A Ddrm-vm-bind-locking.rst48 * ``dma_resv``: A struct dma_resv (a.k.a reservation object) that is used
242 can't share their reservation object with a single gpu_vm. Instead
243 they need to have a reservation object of their own. The external
247 the gpu_vm's reservation object is locked, it is safe to traverse the
/linux/Documentation/target/
H A Dtcm_mod_builder.rst24 SPC-3 persistent reservation are automatically generated in $TCM_NEW_MOD/$TCM_NEW_MOD_fabric.c

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