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SubjectRe: [ANNOUNCE] v5.4.26-rt17
On Fri, Mar 20, 2020 at 08:28:30PM +0100, Sebastian Andrzej Siewior wrote:
> Dear RT folks!
>
> I'm pleased to announce the v5.4.26-rt17 patch set.
>
> Changes since v5.4.26-rt16:
>
> - Revert the "cross CPU pagevec" access with a static key switch. The
> old behaviour has been almost fully restored: There is no cross CPU
> access of the local_lock. Instead the workqueue is scheduled on
> remote CPU like in the !RT case.

[try #2]
This reversion fixes the oops I was getting when CONFIG_PREEMPT_RT=n,
CONFIG_PREEMPT=y, with nohz_full operational, when the system is under
heavy memory pressure (mem=4G on the kernel command line, 8 cpu setup,
make -j11 kernel build).

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