linux-kernel - Re: [RFC PATCH] apei/ghes: fix ghes_poll_func by registering in non-deferrable mode

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Date:   Mon, 6 Jan 2020 14:09:49 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Bhaskar Upadhaya <bhaskar.upadhaya.linux@...il.com>
Cc:     Bhaskar Upadhaya <bupadhaya@...vell.com>,
        linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
        linux-edac@...r.kernel.org, lenb@...nel.org, rafael@...nel.org,
        gkulkarni@...vell.com, rrichter@...vell.com
Subject: Re: [RFC PATCH] apei/ghes: fix ghes_poll_func by registering in
 non-deferrable mode

On Mon, Jan 06, 2020 at 04:33:19PM +0530, Bhaskar Upadhaya wrote:
> Definition of poll interval as per spec (referred ACPI 6.3):
> "Indicates the poll interval in milliseconds OSPM should use to
> periodically check the error source for the presence of an error
> condition."

Please add that...

> We are observing an issue in our ThunderX2 platforms wherein
> ghes_poll_func is not called within poll interval when timer is
> configured with TIMER_DEFERRABLE flag(For NO_HZ kernel) and hence we
> are losing the error records.

... and that to your commit message then, so that it is crystal clear
*why* you're making this change.

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette