[PATCHv2 pci-next 2/2] PCI/AER: Rate limit the reporting of the correctable errors

Grant Grundler grundler at chromium.org
Thu May 18 16:11:37 AEST 2023

On Fri, Apr 7, 2023 at 12:46 PM Bjorn Helgaas <helgaas at kernel.org> wrote:
> But I don't think we need output in a single step; we just need a
> single instance of ratelimit_state (or one for CPER path and another
> for native AER path), and that can control all the output for a single
> error.  E.g., print_hmi_event_info() looks like this:
>   static void print_hmi_event_info(...)
>   {
>     static DEFINE_RATELIMIT_STATE(rs, ...);
>     if (__ratelimit(&rs)) {
>       printk("%s%s Hypervisor Maintenance interrupt ...");
>       printk("%s Error detail: %s\n", ...);
>       printk("%s      HMER: %016llx\n", ...);
>     }
>   }
> I think it's nice that the struct ratelimit_state is explicit and
> there's no danger of breaking it when adding another printk later.

Since the output is spread across at least two functions, I think your
proposal is a better solution.

I'm not happy with the patch series I sent in my previous reply as an
attachment. It's only marginally better than the original code.

I need another day or two to see if I can implement your proposal correctly.


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