debugobjects: Free per CPU pool after CPU unplug

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If a CPU is offlined the debug objects per CPU pool is not cleaned up. If
the CPU is never onlined again then the objects in the pool are wasted.

Add a CPU hotplug callback which is invoked after the CPU is dead to free
the pool.

[ tglx: Massaged changelog and added comment about remote access safety ]

Signed-off-by: Zqiang <qiang.zhang@windriver.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Waiman Long <longman@redhat.com>
Link: https://lore.kernel.org/r/20200908062709.11441-1-qiang.zhang@windriver.com

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Zqiang 2020-09-08 14:27:09 +08:00 • committed by Thomas Gleixner

parent f9e62f318f

commit 88451f2cd3

2 changed files with 26 additions and 0 deletions

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lib/debugobjects.c

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