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Wang ShaoBo a190985d36 arch_topology: Fix missing clear cluster_cpumask in remove_cpu_topology() 
mainline inclusion
commit 4cc4cc28ec upstream.

----------------------------------------------------------------------

When testing cpu online and offline, warning happened like this:

[  146.746743] WARNING: CPU: 92 PID: 974 at kernel/sched/topology.c:2215 build_sched_domains+0x81c/0x11b0
[  146.749988] CPU: 92 PID: 974 Comm: kworker/92:2 Not tainted 5.15.0 #9
[  146.750402] Hardware name: Huawei TaiShan 2280 V2/BC82AMDDA, BIOS 1.79 08/21/2021
[  146.751213] Workqueue: events cpuset_hotplug_workfn
[  146.751629] pstate: 00400009 (nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[  146.752048] pc : build_sched_domains+0x81c/0x11b0
[  146.752461] lr : build_sched_domains+0x414/0x11b0
[  146.752860] sp : ffff800040a83a80
[  146.753247] x29: ffff800040a83a80 x28: ffff20801f13a980 x27: ffff20800448ae00
[  146.753644] x26: ffff800012a858e8 x25: ffff800012ea48c0 x24: 0000000000000000
[  146.754039] x23: ffff800010ab7d60 x22: ffff800012f03758 x21: 000000000000005f
[  146.754427] x20: 000000000000005c x19: ffff004080012840 x18: ffffffffffffffff
[  146.754814] x17: 3661613030303230 x16: 30303078303a3239 x15: ffff800011f92b48
[  146.755197] x14: ffff20be3f95cef6 x13: 2e6e69616d6f642d x12: 6465686373204c4c
[  146.755578] x11: ffff20bf7fc83a00 x10: 0000000000000040 x9 : 0000000000000000
[  146.755957] x8 : 0000000000000002 x7 : ffffffffe0000000 x6 : 0000000000000002
[  146.756334] x5 : 0000000090000000 x4 : 00000000f0000000 x3 : 0000000000000001
[  146.756705] x2 : 0000000000000080 x1 : ffff800012f03860 x0 : 0000000000000001
[  146.757070] Call trace:
[  146.757421]  build_sched_domains+0x81c/0x11b0
[  146.757771]  partition_sched_domains_locked+0x57c/0x978
[  146.758118]  rebuild_sched_domains_locked+0x44c/0x7f0
[  146.758460]  rebuild_sched_domains+0x2c/0x48
[  146.758791]  cpuset_hotplug_workfn+0x3fc/0x888
[  146.759114]  process_one_work+0x1f4/0x480
[  146.759429]  worker_thread+0x48/0x460
[  146.759734]  kthread+0x158/0x168
[  146.760030]  ret_from_fork+0x10/0x20
[  146.760318] ---[ end trace 82c44aad6900e81a ]---

For some architectures like risc-v and arm64 which use common code
clear_cpu_topology() in shutting down CPUx, When CONFIG_SCHED_CLUSTER
is set, cluster_sibling in cpu_topology of each sibling adjacent
to CPUx is missed clearing, this causes checking failed in
topology_span_sane() and rebuilding topology failure at end when CPU online.

Different sibling's cluster_sibling in cpu_topology[] when CPU92 offline
(CPU 92, 93, 94, 95 are in one cluster):

Before revision:
CPU                 [92]      [93]      [94]      [95]
cluster_sibling     [92]     [92-95]   [92-95]   [92-95]

After revision:
CPU                 [92]      [93]      [94]      [95]
cluster_sibling     [92]     [93-95]   [93-95]   [93-95]

Signed-off-by: Wang ShaoBo <bobo.shaobowang@huawei.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Acked-by: Barry Song <song.bao.hua@hisilicon.com>
Tested-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Link: https://lore.kernel.org/r/20211110095856.469360-1-bobo.shaobowang@huawei.com

Signed-off-by: Xue Sinian <tangyuan911@yeah.net>
 		2024-11-11 08:21:03 +08:00
..
firmware_loader tkernel: sync code to the same with tk4 pub/lts/0017-kabi 2024-06-12 13:13:20 +08:00
power tkernel: sync code to the same with tk4 pub/lts/0017-kabi 2024-06-12 13:13:20 +08:00
regmap tkernel: sync code to the same with tk4 pub/lts/0017-kabi 2024-06-12 13:13:20 +08:00
test tkernel: sync code to the same with tk4 pub/lts/0017-kabi 2024-06-12 13:13:20 +08:00
Kconfig tkernel: sync code to the same with tk4 pub/lts/0017-kabi 2024-06-12 13:13:20 +08:00
Makefile tkernel: sync code to the same with tk4 pub/lts/0017-kabi 2024-06-12 13:13:20 +08:00
arch_topology.c arch_topology: Fix missing clear cluster_cpumask in remove_cpu_topology() 2024-11-11 08:21:03 +08:00
attribute_container.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00
auxiliary.c tkernel: sync code to the same with tk4 pub/lts/0017-kabi 2024-06-12 13:13:20 +08:00
base.h tkernel: sync code to the same with tk4 pub/lts/0017-kabi 2024-06-12 13:13:20 +08:00
bus.c tkernel: sync code to the same with tk4 pub/lts/0017-kabi 2024-06-12 13:13:20 +08:00
cacheinfo.c tkernel: sync code to the same with tk4 pub/lts/0017-kabi 2024-06-12 13:13:20 +08:00
class.c tkernel: sync code to the same with tk4 pub/lts/0017-kabi 2024-06-12 13:13:20 +08:00
component.c ock: sync codes to ock 5.4.119-20.0009.21 2024-06-11 20:27:38 +08:00
container.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00
core.c tkernel: sync code to the same with tk4 pub/lts/0017-kabi 2024-06-12 13:13:20 +08:00
cpu.c tkernel: sync code to the same with tk4 pub/lts/0017-kabi 2024-06-12 13:13:20 +08:00
dd.c tkernel: sync code to the same with tk4 pub/lts/0017-kabi 2024-06-12 13:13:20 +08:00
devcon.c Merge generic_lookup_helpers into usb-next 2019-09-03 17:11:07 +02:00
devcoredump.c devcoredump: fix typo in comment 2019-08-15 17:38:11 +02:00
devres.c devres: provide devm_krealloc() 2024-08-13 11:43:51 +08:00
devtmpfs.c tkernel: sync code to the same with tk4 pub/lts/0017-kabi 2024-06-12 13:13:20 +08:00
driver.c driver_find_device: Unify the match function with class_find_device() 2019-06-24 05:22:31 +02:00
firmware.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00
hypervisor.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00
init.c tkernel: sync code to the same with tk4 pub/lts/0017-kabi 2024-06-12 13:13:20 +08:00
isa.c Merge 4.15-rc3 into driver-core-next 2017-12-11 08:50:05 +01:00
map.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00
memory.c tkernel: sync code to the same with tk4 pub/lts/0017-kabi 2024-06-12 13:13:20 +08:00
module.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00
node.c tkernel: sync code to the same with tk4 pub/lts/0017-kabi 2024-06-12 13:13:20 +08:00
pinctrl.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00
platform-msi.c platform-msi: Free descriptors in platform_msi_domain_free() 2018-12-13 09:35:31 +00:00
platform.c tkernel: sync code to the same with tk4 pub/lts/0017-kabi 2024-06-12 13:13:20 +08:00
property.c device property: Introduce fwnode_find_reference() 2019-06-03 10:55:38 +02:00
soc.c tkernel: sync code to the same with tk4 pub/lts/0017-kabi 2024-06-12 13:13:20 +08:00
swnode.c ock: sync codes to ock 5.4.119-20.0009.21 2024-06-11 20:27:38 +08:00
syscore.c treewide: Switch printk users from %pf and %pF to %ps and %pS, respectively 2019-04-09 14:19:06 +02:00
topology.c topology/sysfs: export cluster attributes only if an architectures has support 2024-11-10 06:30:14 +08:00
transport_class.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00