Re: [Xen-devel] [Resend PATCH 2/2] Xen/timer: Process softirq during dumping timer info

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Fri, Sep 30, 2016 at 10:19:06AM +0800, Lan Tianyu wrote:
> Dumping timer info may run for a long time on the huge machine with
> a lot of physical cpus. To avoid triggering NMI watchdog, add
> process_pending_softirqs() in the loop of dumping timer info.


Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>

> 
> Signed-off-by: Lan Tianyu <tianyu.lan@xxxxxxxxx>
> ---
>  xen/common/timer.c |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)
> 
> diff --git a/xen/common/timer.c b/xen/common/timer.c
> index 29a60a9..ab6bca0 100644
> --- a/xen/common/timer.c
> +++ b/xen/common/timer.c
> @@ -530,6 +530,7 @@ static void dump_timerq(unsigned char key)
>      {
>          ts = &per_cpu(timers, i);
>  
> +        process_pending_softirqs();
>          printk("CPU%02d:\n", i);
>          spin_lock_irqsave(&ts->lock, flags);
>          for ( j = 1; j <= GET_HEAP_SIZE(ts->heap); j++ )
> -- 
> 1.7.1
> 

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