> -Original Message-
> From: Miroslav Lichvar [mailto:mlich...@redhat.com]
> Sent: Friday, October 26, 2018 5:04 AM
> To: Richard Cochran
> Cc: intel-wired-...@lists.osuosl.org; netdev@vger.kernel.org; Keller, Jacob E
> ; Thomas Gleixner
> Subject: Re: [PATCH] igb
On Fri, Oct 12, 2018 at 07:05:30AM -0700, Richard Cochran wrote:
> On Fri, Oct 12, 2018 at 01:13:39PM +0200, Miroslav Lichvar wrote:
> > Since commit 500462a9d ("timers: Switch to a non-cascading wheel"),
> > scheduling of delayed work seems to be less accurate and a requested
> > delay of 540 seco
[PATCH] igb: shorten maximum PHC timecounter
> update interval
>
> The timecounter needs to be updated at least once per ~550 seconds in
> order to avoid a 40-bit SYSTIM timestamp to be misinterpreted as an old
> timestamp.
>
> Since commit 500462a9d ("timers: Switch to a
On Fri, Oct 12, 2018 at 01:13:39PM +0200, Miroslav Lichvar wrote:
> This fixes an issue with HW timestamps on 82580/I350/I354 being off by
> ~1100 seconds for few seconds every ~9 minutes.
This patch should go to the stable trees starting with v4.8.
Thanks,
Richard
On Fri, Oct 12, 2018 at 01:13:39PM +0200, Miroslav Lichvar wrote:
> Since commit 500462a9d ("timers: Switch to a non-cascading wheel"),
> scheduling of delayed work seems to be less accurate and a requested
> delay of 540 seconds may actually be longer than 550 seconds. Shorten
> the delay to 480 s
The timecounter needs to be updated at least once per ~550 seconds in
order to avoid a 40-bit SYSTIM timestamp to be misinterpreted as an old
timestamp.
Since commit 500462a9d ("timers: Switch to a non-cascading wheel"),
scheduling of delayed work seems to be less accurate and a requested
delay of
