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/linux/drivers/s390/crypto/
H A Dzcrypt_queue.c46 int online = aq->config && !aq->chkstop && zq->online ? 1 : 0; in online_show() local
48 return sysfs_emit(buf, "%d\n", online); in online_show()
58 int online; in online_store() local
60 if (sscanf(buf, "%d\n", &online) != 1 || online < 0 || online > 1) in online_store()
63 if (online && (!aq->config || !aq->card->config || in online_store()
66 if (online && !zc->online) in online_store()
68 zq->online = online; in online_store()
70 ZCRYPT_DBF_INFO("%s queue=%02x.%04x online=%d\n", in online_store()
72 AP_QID_QUEUE(zq->queue->qid), online); in online_store()
74 ap_send_online_uevent(&aq->ap_dev, online); in online_store()
[all …]
H A Dzcrypt_card.c56 int online = ac->config && !ac->chkstop && zc->online ? 1 : 0; in online_show() local
58 return sysfs_emit(buf, "%d\n", online); in online_show()
68 int online, id, i = 0, maxzqs = 0; in online_store() local
71 if (sscanf(buf, "%d\n", &online) != 1 || online < 0 || online > 1) in online_store()
74 if (online && (!ac->config || ac->chkstop)) in online_store()
77 zc->online = online; in online_store()
80 ZCRYPT_DBF_INFO("%s card=%02x online=%d\n", __func__, id, online); in online_store()
82 ap_send_online_uevent(&ac->ap_dev, online); in online_store()
96 if (zcrypt_queue_force_online(zq, online)) in online_store()
105 ap_send_online_uevent(&zq->queue->ap_dev, online); in online_store()
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/linux/tools/testing/selftests/cpu-hotplug/
H A Dcpu-on-off-test.sh32 echo "CPU online/offline summary:"
33 online_cpus=`cat $SYSFS/devices/system/cpu/online`
45 echo -e "\t Cpus in online state: $online_cpus"
64 if [ -f $cpu/online ] && grep -q $state $cpu/online; then
82 grep -q 1 $SYSFS/devices/system/cpu/cpu$1/online
87 grep -q 0 $SYSFS/devices/system/cpu/cpu$1/online
92 echo 1 > $SYSFS/devices/system/cpu/cpu$1/online
97 echo 0 > $SYSFS/devices/system/cpu/cpu$1/online
121 echo $FUNCNAME $cpu: unexpected online >&2
196 # Safe test (default) - offline and online one cpu
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/linux/Documentation/core-api/
H A Dcpu_hotplug.rst36 other CPUs later online.
41 those CPUs can not be brought online later.
65 Bitmap of all CPUs currently online. Its set in ``__cpu_up()``
73 of them may be online. When physical hotplug is processed by the relevant
106 -r--r--r-- 1 root root 4.0K Dec 21 16:33 online
110 The files *offline*, *online*, *possible*, *present* represent the CPU masks.
111 Each CPU folder contains an *online* file which controls the logical on (1) and
114 $ echo 0 > /sys/devices/system/cpu/cpu4/online
119 bring CPU4 back online::
121 $ echo 1 > /sys/devices/system/cpu/cpu4/online
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/linux/tools/testing/selftests/memory-hotplug/
H A Dmem-on-off-test.sh58 hotpluggable_memory online
63 grep -q online $SYSFS/devices/system/memory/memory$1/state
73 echo online > $SYSFS/devices/system/memory/memory$1/state
103 echo $FUNCNAME $memory: unexpected online >&2
184 # Online all hot-pluggable memory
187 echo -e "\t online all hot-pluggable memory in offline state:"
190 echo "offline->online memory$memory"
204 echo -e "\t offline $ratio% hot-pluggable memory in online state"
208 echo "online->offline memory$memory"
223 # Online all hot-pluggable memory again
[all …]
/linux/tools/testing/selftests/ftrace/test.d/ftrace/
H A Dfunc_hotplug.tc19 # Find online cpu
21 if [ -f $i/online ] && [ "$(cat $i/online)" = "1" ]; then
28 echo "We cannot test cpu hotplug with a single cpu online"
35 : "Set $(basename $cpu) offline/online with function tracer enabled"
38 (echo 0 > $cpu/online)
40 (echo 1 > $cpu/online)
/linux/Documentation/arch/s390/
H A Ddriver-model.rst49 online:
50 An interface to set the device online and offline.
52 notify function under 1.2), piping 0 to online will forcibly delete
77 via the 'online' interface.
93 int online;
161 activated via the 'online' attribute. The driver should finally
171 verified that the device is not already online.
175 de-activated via the 'online' attribute. The driver should shut
185 verified that the device is online.
194 * In online state, device detached (CIO_GONE) or last path gone
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/linux/Documentation/translations/zh_CN/core-api/
H A Dcpu_hotplug.rst107 -r--r--r-- 1 root root 4.0K Dec 21 16:33 online
111 文件 *offline* 、 *online* 、*possible* 、*present* 代表CPU掩码。每个CPU文件
112 夹包含一个 *online* 文件，控制逻辑上的开（1）和关（0）状态。要在逻辑上关闭CPU4::
114 $ echo 0 > /sys/devices/system/cpu/cpu4/online
120 $ echo 1 > /sys/devices/system/cpu/cpu4/online
365 的常量之一， 具体取决于应该分配动态状态的状态阶段（PREPARE，ONLINE）。
379 online 对应ONLINE阶段中的状态
387 @name参数的示例："perf/online", "perf/x86:prepare", "RCU/tree:dying", "sched/waitempty"
521 state = cpuhp_setup_state_nocalls(CPUHP_ONLINE_DYN, "subsys:online", subsys_cpu_online, NULL);
529 …state = cpuhp_setup_state_multi(CPUHP_ONLINE_DYN, "subsys:online", subsys_cpu_online, subsys_cpu_o…
[all …]
/linux/Documentation/admin-guide/
H A Dcputopology.rst61 offline: CPUs that are not online because they have been
66 online: CPUs that are online and being scheduled [cpu_online_mask]
69 brought online if they are present. [cpu_possible_mask]
80 being 32. Note also that CPUs 2 and 4-31 are not online but could be
81 brought online as they are both present and possible::
85 online: 0-1,3
92 online.)::
96 online: 0-1,3
/linux/Documentation/ABI/testing/
H A Dsysfs-devices-online1 What: /sys/devices/.../online
5 The /sys/devices/.../online attribute is only present for
6 devices whose bus types provide .online() and .offline()
13 this file, the device bus type's .online() callback is executed
20 type's .online() is executed successfully.
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
52 # echo online > /sys/devices/system/memory/memoryX/state
60 reading the file will return "online"; the zone information
77 For online memory blocks, it returns in which zone memory
85 the state of an offline memory block to "online". Only one of
H A Dsysfs-devices-system-xen_cpu12 What: /sys/devices/system/xen_cpu/xen_cpu#/online
16 Interface to online/offline Xen physical cpus
19 to online/offline physical cpus, except cpu0 due to several
/linux/tools/testing/selftests/bpf/prog_tests/
H A Dperf_buffer.c54 bool *online; in serial_test_perf_buffer() local
60 err = parse_cpu_mask_file("/sys/devices/system/cpu/online", in serial_test_perf_buffer()
61 &online, &on_len); in serial_test_perf_buffer()
66 if (online[i]) in serial_test_perf_buffer()
95 if (i >= on_len || !online[i]) { in serial_test_perf_buffer()
118 if (i >= on_len || !online[i]) in serial_test_perf_buffer()
146 free(online); in serial_test_perf_buffer()
H A Draw_tp_test_run.c15 bool *online = NULL; in test_raw_tp_test_run() local
22 err = parse_cpu_mask_file("/sys/devices/system/cpu/online", &online, in test_raw_tp_test_run()
58 if (!online[i]) in test_raw_tp_test_run()
85 free(online); in test_raw_tp_test_run()
/linux/tools/testing/selftests/sched_ext/
H A Dhotplug.c17 const char *online_path = "/sys/devices/system/cpu/cpu1/online";
24 static void toggle_online_status(bool online) in toggle_online_status() argument
26 long val = online ? 1 : 0; in toggle_online_status()
32 online ? "online" : "offline", strerror(errno)); in toggle_online_status()
56 /* Testing the offline -> online path, so go offline before starting */ in test_hotplug()
/linux/mm/
H A Dmemory_hotplug.c158 * memory_hotplug.online_policy: configure online behavior when onlining without
162 * "auto-movable": online memory to ZONE_MOVABLE if the configuration
172 "Set the online policy (\"contig-zones\", \"auto-movable\") "
179 * online some memory to ZONE_MOVABLE -- e.g., because hotplugged KERNEL memory
186 "in percent for \"auto-movable\" online policy. Default: 301");
196 "\"auto-movable\" online policy. Default: true");
326 * memory that will be marked online, so this check should only in check_pfn_span()
342 * Return page for the valid pfn only if the page is online. All pfn
376 * get_dev_pagemap() can determine sub-section online status. in pfn_to_online_page()
664 * Online the pages in MAX_PAGE_ORDER aligned chunks. The callback might in online_pages_range()
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/linux/kernel/irq/
H A Dmatrix.c17 bool online; member
81 * irq_matrix_online - Bring the local CPU matrix online
88 BUG_ON(cm->online); in irq_matrix_online()
96 cm->online = true; in irq_matrix_online()
111 cm->online = false; in irq_matrix_offline()
146 if (!cm->online || cm->available <= maxavl) in matrix_find_best_cpu()
167 if (!cm->online || cm->managed_allocated > allocated) in matrix_find_best_cpu_managed()
228 if (cm->online) { in irq_matrix_reserve_managed()
278 if (cm->online) { in irq_matrix_remove_managed()
439 if (cm->online) in irq_matrix_free()
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H A Dcpuhotplug.c36 * CPU then it must contain at least one online CPU. The outgoing CPU in irq_needs_fixup()
37 * has been removed from the online mask already. in irq_needs_fixup()
102 * any online CPU, use the current affinity mask. in migrate_one_irq()
135 * If there are online CPUs in the affinity mask, but they have no in migrate_one_irq()
137 * affinity by migrating to any online CPU. in migrate_one_irq()
140 pr_debug("IRQ%u: set affinity failed for %*pbl, re-try with online CPUs\n", in migrate_one_irq()
/linux/arch/s390/include/asm/
H A Dphysmem_info.h55 struct physmem_range online[MEM_INLINED_ENTRIES]; member
73 *start = (unsigned long)physmem_info.online[n].start; in __get_physmem_range()
74 *end = (unsigned long)physmem_info.online[n].end; in __get_physmem_range()
90 * for_each_physmem_usable_range - early online memory range iterator
95 * Walks over detected online memory ranges below usable limit.
100 /* Walks over all detected online memory ranges disregarding usable limit. */
/linux/Documentation/driver-api/cxl/linux/
H A Dmemory-hotplug.rst12 1) Default Online Behavior (on/off and zone)
17 Default Online Behavior
19 The default-online behavior of hotplug memory is dictated by the following,
29 2) Online in :code:`ZONE_NORMAL`
30 3) Online in :code:`ZONE_MOVABLE`
/linux/Documentation/arch/arm64/
H A Dcpu-hotplug.rst9 CPUs online/offline using PSCI. This document is about ACPI firmware allowing
51 marked as disabled by firmware. Only the CPU's online/offline behaviour is
59 brought online. Firmware can enforce its policy via PSCI's return codes. e.g.
64 ``enabled`` in the MADT GICC structures, but should have the ``online capable``
69 CPUs described as ``online capable`` but not ``enabled`` can be set to enabled
/linux/drivers/powercap/
H A Ddtpm_cpu.c278 * The function update_pd_power() uses the online mask to in dtpm_cpu_init()
282 * online mask when the cpuhp_dtpm_cpu_online function is in dtpm_cpu_init()
283 * called, but the CPU is still in the online mask for the in dtpm_cpu_init()
288 * above. The CPU online mask is not up to date when the CPU in dtpm_cpu_init()
291 * For this reason, we need to call the online and offline in dtpm_cpu_init()
292 * callbacks at different moments when the CPU online mask is in dtpm_cpu_init()
300 ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "dtpm_cpu:online", in dtpm_cpu_init()
/linux/arch/arc/kernel/
H A Dmcip.c23 * Set mask to halt GFRC if any online core in SMP cluster is halted.
88 /* Update GFRC halt mask as new CPU came online */ in mcip_setup_per_cpu()
92 /* Update MCIP debug mask as new CPU came online */ in mcip_setup_per_cpu()
268 cpumask_t online; in idu_irq_set_affinity() local
272 /* errout if no online cpu per @cpumask */ in idu_irq_set_affinity()
273 if (!cpumask_and(&online, cpumask, cpu_online_mask)) in idu_irq_set_affinity()
278 destination_bits = cpumask_bits(&online)[0]; in idu_irq_set_affinity()
319 * By default send all common interrupts to all available online CPUs. in idu_irq_enable()
/linux/Documentation/filesystems/
H A Dgfs2-uevents.rst19 is successful, an ONLINE uevent will follow. If it is not successful
27 2. ONLINE
30 The ONLINE uevent is generated after a successful mount or remount. It
31 has the same environment variables as the ADD uevent. The ONLINE
57 cluster. For this reason the ONLINE uevent was used when adding a new
/linux/include/trace/events/
H A Dirq_matrix.h75 __field( bool, online )
88 __entry->online = cmap->online;
98 …TP_printk("bit=%d cpu=%u online=%d avl=%u alloc=%u managed=%u online_maps=%u global_avl=%u, global…
99 __entry->bit, __entry->cpu, __entry->online,

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