ACK: [SRU][J, F:linux-bluefield][PATCH 0/1] Stop allowing RCU_SOFTIRQ in idle

[Tim Gardner]

On 12/8/22 4:52 PM, Bodong Wang wrote:
> RCU_SOFTIRQ used to be special in that it could be raised on purpose
> within the idle path to prevent from stopping the tick. Some code still
> prevents from unnecessary warnings related to this specific behaviour
> while entering in dynticks-idle mode.
> 
> However the nohz layout has changed quite a bit in ten years, and the
> removal of CONFIG_RCU_FAST_NO_HZ has been the final straw to this
> safe-conduct. Now the RCU_SOFTIRQ vector is expected to be raised from
> sane places.
> 
> This patch is applicable for both J and F.
> 
> Frederic Weisbecker (1):
>    tick/rcu: Stop allowing RCU_SOFTIRQ in idle
> 
>   include/linux/interrupt.h |  8 ++++++-
>   kernel/time/tick-sched.c  | 50 +++++++++++++++++++++++++++++++--------
>   2 files changed, 47 insertions(+), 11 deletions(-)
> 
Acked-by: Tim Gardner <tim.gardner at canonical.com>
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Tim Gardner
Canonical, Inc