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powerpc: avoid lockdep when we are offline #10

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Pull request for series with
subject: powerpc: avoid lockdep when we are offline
version: 1
url: https://patchwork.kernel.org/project/rcu/list/?series=680813

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Master branch: 2a34cb5
series: https://patchwork.kernel.org/project/rcu/list/?series=680813
version: 1

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Master branch: 2a34cb5
series: https://patchwork.kernel.org/project/rcu/list/?series=680813
version: 1

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Master branch: 2a34cb5
series: https://patchwork.kernel.org/project/rcu/list/?series=680813
version: 1

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Master branch: 2a34cb5
series: https://patchwork.kernel.org/project/rcu/list/?series=680813
version: 1

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Master branch: 2a34cb5
series: https://patchwork.kernel.org/project/rcu/list/?series=680813
version: 1

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Master branch: 2a34cb5
series: https://patchwork.kernel.org/project/rcu/list/?series=680813
version: 1

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Master branch: 2a34cb5
series: https://patchwork.kernel.org/project/rcu/list/?series=680813
version: 1

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Master branch: 2a34cb5
series: https://patchwork.kernel.org/project/rcu/list/?series=680813
version: 1

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Master branch: 2a34cb5
series: https://patchwork.kernel.org/project/rcu/list/?series=680813
version: 1

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Master branch: 2a34cb5
series: https://patchwork.kernel.org/project/rcu/list/?series=680813
version: 1

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Master branch: 2a34cb5
series: https://patchwork.kernel.org/project/rcu/list/?series=680813
version: 1

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Master branch: 2a34cb5
series: https://patchwork.kernel.org/project/rcu/list/?series=680813
version: 1

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Master branch: 2a34cb5
series: https://patchwork.kernel.org/project/rcu/list/?series=680813
version: 1

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Master branch: 2a34cb5
series: https://patchwork.kernel.org/project/rcu/list/?series=680813
version: 1

@kernel-patches-bot kernel-patches-bot force-pushed the series/680813=>rcu-dev branch 13 times, most recently from aa6f8af to 0b2cb3f Compare October 20, 2022 06:44
@kernel-patches-bot kernel-patches-bot force-pushed the series/680813=>rcu-dev branch 12 times, most recently from 1d1a56c to ce17c26 Compare October 20, 2022 16:37
@zhouzhouyi-hub @chantra
powerpc: avoid lockdep when we are offline
6df42c8 
This is second version of my fix to PPC's  "WARNING: suspicious RCU usage",
I improved my fix under Paul E. McKenney's guidance:
Link: https://lore.kernel.org/lkml/[email protected]/T/

During the cpu offlining, the sub functions of xive_teardown_cpu will
call __lock_acquire when CONFIG_LOCKDEP=y. The latter function will
travel RCU protected list, so "WARNING: suspicious RCU usage" will be
triggered.

Avoid lockdep when we are offline.

Signed-off-by: Zhouyi Zhou <[email protected]>
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