Re: [PATCH net-next -v5] net/core/dev.c: enable timestamp static key if CPU isolation is configured

[Willem de Bruijn]

Marcelo Tosatti wrote:
> 
> For systems that use CPU isolation (via nohz_full), creating or destroying
> a socket with SO_TIMESTAMP, SO_TIMESTAMPNS or SO_TIMESTAMPING with flag
> SOF_TIMESTAMPING_RX_SOFTWARE will cause a static key to be enabled/disabled.
> This in turn causes undesired IPIs to isolated CPUs.
> 
> So enable the static key unconditionally, if CPU isolation is enabled,
> thus avoiding the IPIs.
> 
> Signed-off-by: Marcelo Tosatti <mtosatti@xxxxxxxxxx>

Reviewed-by: Willem de Bruijn <willemb@xxxxxxxxxx>