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/linux/Documentation/ABI/testing/
H A Dsysfs-devices-online6 devices whose bus types provide .online() and .offline()
8 of the device's 'offline' field. If that number is 1 and '0'
10 .offline() callback is executed for the device and (if
11 successful) its 'offline' field is updated accordingly. In
14 for the device and (if successful) its 'offline' field is
17 After a successful execution of the bus type's .offline()
H A Dsysfs-memory-page-offline6 Soft-offline the memory page containing the physical address
9 to soft-offline it, by moving the contents elsewhere or
19 fail the offline. Return value is the size of the
28 Hard-offline the memory page containing the physical
31 kernel will then attempt to hard-offline the page, by
H A Dusb-uevent7 contain ACTION=offline and ERROR=DEAD.
11 KERNEL[130.428945] offline /devices/pci0000:00/0000:00:10.0/usb2 (usb)
12 ACTION=offline
H A Dsysfs-devices-memory47 is read-write. When read, it returns the online/offline
49 the online/offline state of a memory block using the following
53 # echo offline > /sys/devices/system/memory/memoryX/state
82 For offline memory blocks, it returns by which zone memory
85 the state of an offline memory block to "online". Only one of
119 segments on memory hot un/plug and/or on/offline events, avoiding the
H A Dsysfs-devices-system-xen_cpu16 Interface to online/offline Xen physical cpus
19 to online/offline physical cpus, except cpu0 due to several
H A Dsysfs-class-remoteproc19 - "offline"
25 "offline" means the remote processor is powered off.
50 return it to the "offline" state.
/linux/tools/testing/selftests/memory-hotplug/
H A Dmem-on-off-test.sh53 hotpluggable_memory offline
68 grep -q offline $SYSFS/devices/system/memory/memory$1/state
78 echo offline > $SYSFS/devices/system/memory/memory$1/state
89 echo $FUNCNAME $memory: unexpected offline >&2
117 echo $FUNCNAME $memory: unexpected offline >&2
131 echo $FUNCNAME $memory: unexpected offline >&2
/linux/drivers/base/
H A Dcontainer.c24 return cdev->offline ? cdev->offline(cdev) : 0; in container_offline()
31 .offline = container_offline,
H A Dcpu.c251 cpumask_var_t offline; in print_cpus_offline() local
254 if (!alloc_cpumask_var(&offline, GFP_KERNEL)) in print_cpus_offline()
256 cpumask_andnot(offline, cpu_possible_mask, cpu_online_mask); in print_cpus_offline()
257 len += sysfs_emit_at(buf, len, "%*pbl", cpumask_pr_args(offline)); in print_cpus_offline()
258 free_cpumask_var(offline); in print_cpus_offline()
275 static DEVICE_ATTR(offline, 0444, print_cpus_offline, NULL);
383 .offline = cpu_subsys_offline,
409 cpu->dev.offline = !cpu_online(num); in register_cpu()
/linux/drivers/thunderbolt/
H A Dusb4_port.c113 return sysfs_emit(buf, "%d\n", usb4->offline); in offline_show()
136 if (val == usb4->offline) in offline_store()
154 usb4->offline = val; in offline_store()
165 static DEVICE_ATTR_RW(offline);
191 if (!usb4->offline) { in rescan_store()
322 return usb4->offline ? usb4_port_offline(usb4) : 0; in usb4_port_device_resume()
/linux/tools/testing/selftests/cpu-hotplug/
H A Dcpu-on-off-test.sh47 offline_cpus=`cat $SYSFS/devices/system/cpu/offline`
108 echo $FUNCNAME $cpu: unexpected offline >&2
134 echo $FUNCNAME $cpu: unexpected offline >&2
147 echo $FUNCNAME $cpu: unexpected offline >&2
/linux/Documentation/translations/zh_CN/admin-guide/
H A Dcputopology.rst63 offline: 由于热插拔移除或者超过内核允许的CPU上限（上文描述的kernel_max）
81 offline: 2,4-31,32-63
90 offline: 2,4-127,128-143
/linux/Documentation/translations/zh_TW/admin-guide/
H A Dcputopology.rst63 offline: 由於熱插拔移除或者超過內核允許的CPU上限（上文描述的kernel_max）
81 offline: 2,4-31,32-63
90 offline: 2,4-127,128-143
/linux/mm/kasan/
H A Dquarantine.c39 bool offline; member
210 if (q->offline) { in kasan_quarantine_put()
336 if (READ_ONCE(q->offline)) in per_cpu_remove_cache()
385 this_cpu_ptr(&cpu_quarantine)->offline = false; in kasan_cpu_online()
398 WRITE_ONCE(q->offline, true); in kasan_cpu_offline()
/linux/Documentation/admin-guide/
H A Dcputopology.rst61 offline: CPUs that are not online because they have been
84 offline: 2,4-31,32-63
91 was manually taken offline (and is the only CPU that can be brought
95 offline: 2,4-127,128-143
/linux/Documentation/translations/zh_CN/core-api/
H A Dcpu_hotplug.rst106 -r--r--r-- 1 root root 4.0K Dec 21 16:33 offline
111 文件 *offline* 、 *online* 、*possible* 、*present* 代表CPU掩码。每个CPU文件
115 smpboot: CPU 4 is now offline
381 offline 对应ONLINE阶段中不提供startup回调的状态
513 state = cpuhp_setup_state(CPUHP_ONLINE_DYN, "subsys:offline", NULL, subsys_cpu_offline);
644 if [ "${ACTION}" = "offline" ]
646 echo "CPU ${DEVPATH##*/} offline"
/linux/Documentation/core-api/
H A Dcpu_hotplug.rst105 -r--r--r-- 1 root root 4.0K Dec 21 16:33 offline
110 The files *offline*, *online*, *possible*, *present* represent the CPU masks.
115 smpboot: CPU 4 is now offline
130 The offline case
169 operations (CPU online or CPU offline) then the other not-required callback
181 after the CPU has become dysfunctional during a CPU offline operation.
206 on the hotplugged CPU during a CPU offline operation shortly before the
221 hotplugged CPU during a CPU offline operation.
230 CPU online/offline operations
251 A successful offline operation looks like this::
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H A Dmemory-hotplug.rst34 the memory block that we attempted to offline.
63 - start_pfn is start_pfn of online/offline memory.
64 - nr_pages is # of pages of online/offline memory.
92 - synchronize against online/offline requests (e.g. via sysfs). This way, memory
/linux/drivers/bus/
H A Dmips_cdmm.c270 bool offline; member
382 if (bus->offline) { in mips_cdmm_setup()
390 bus->offline = false; in mips_cdmm_setup()
635 bus->offline = true; in BUILD_PERDEV_HELPER()
663 bus->offline = false; in mips_cdmm_cpu_online()
/linux/Documentation/fault-injection/
H A Dnotifier-error-inject.rst44 Example: Inject memory hotplug offline error (-12 == -ENOMEM)::
48 # echo offline > /sys/devices/system/memory/memoryXXX/state
97 These scripts first do simple online and offline tests and then do fault
/linux/net/sunrpc/
H A Dsysfs.c172 closing, congested, cwnd_wait, write_space, offline, remove; in rpc_sysfs_xprt_state_show() local
187 offline = test_bit(XPRT_OFFLINE, &xprt->state); in rpc_sysfs_xprt_state_show()
201 offline ? "OFFLINE" : "", in rpc_sysfs_xprt_state_show()
292 int offline = 0, online = 0, remove = 0; in rpc_sysfs_xprt_state_change() local
301 offline = 1; in rpc_sysfs_xprt_state_change()
319 if (offline) { in rpc_sysfs_xprt_state_change()
H A Dxprtmultipath.c65 struct rpc_xprt *xprt, bool offline) in xprt_switch_remove_xprt_locked() argument
69 if (!test_bit(XPRT_OFFLINE, &xprt->state) && offline) in xprt_switch_remove_xprt_locked()
87 struct rpc_xprt *xprt, bool offline) in rpc_xprt_switch_remove_xprt() argument
90 xprt_switch_remove_xprt_locked(xps, xprt, offline); in rpc_xprt_switch_remove_xprt()
/linux/Documentation/filesystems/
H A Dzonefs.rst190 * A zone may transition to the offline condition (BLK_ZONE_COND_OFFLINE):
191 An offline zone cannot be read nor written. No user action can transition an
192 offline zone back to an operational good state. Similarly to zone read-only
193 transitions, the reasons for a drive to transition a zone to the offline
228 * A zone condition change to read-only or offline also always triggers zonefs
252 file attributes and data modification. For offline zones, all permissions
268 | (default) | offline | 0 no no no no |
272 | | offline | 0 no no no no |
275 | zone-offline | read-only | 0 no no yes no |
276 | | offline | 0 no no no no |
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/linux/Documentation/admin-guide/mm/
H A Dmemory-hotplug.rst169 One can explicitly request to associate an offline memory block with
186 If this feature is disabled, the memory blocks will stay offline until
211 DLPAR on ppc64 ignores the ``offline`` setting and will still online added
231 % echo offline > /sys/devices/system/memory/memoryXXX/state
237 If offlining succeeds, the state of the memory block is changed to be "offline".
250 The state (online/offline/going-offline) of a memory block can be observed
352 When writing, ``online``, ``offline``, ``online_kernel`` and
360 When reading, ``online``, ``offline`` and ``going-offline``
364 belongs to; when a block is offline, shows what zone will
374 For offline memory blocks, the first column shows the
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/linux/Documentation/admin-guide/cgroup-v1/
H A Dhugetlb.rst125 4. Caveats with HugeTLB cgroup offline.
127 When a HugeTLB cgroup goes offline with some reservations or faults still
131 - the reservation charges remain on the offline HugeTLB cgroup.
139 harder to reparent reservations at offline time.

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