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cpumask: Introduce DYING mask
authorPeter Zijlstra <[email protected]>
Tue, 19 Jan 2021 17:43:45 +0000 (18:43 +0100)
committerPeter Zijlstra <[email protected]>
Fri, 16 Apr 2021 15:06:32 +0000 (17:06 +0200)
commite40f74c535b8a0ecf3ef0388b51a34cdadb34fb5
treefdaa32a293b6dc3df7213ceebd91892a57a7ae65tree | snapshot
parentb02a4fd8148f655095d9e3d6eddd8f0042bcc27ccommit | diff
cpumask: Introduce DYING mask

Introduce a cpumask that indicates (for each CPU) what direction the
CPU hotplug is currently going. Notably, it tracks rollbacks. Eg. when
an up fails and we do a roll-back down, it will accurately reflect the
direction.

Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Reviewed-by: Valentin Schneider <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
include/linux/cpumask.h diff | blob | blame | history
kernel/cpu.c diff | blob | blame | history
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