From: William Cohen <wcohen@redhat.com>
To: Andreas Arnez <arnez@linux.vnet.ibm.com>
Cc: Michael Petlan <mpetlan@redhat.com>,
Andreas Krebbel <krebbel@linux.vnet.ibm.com>,
oprofile-list@lists.sf.net,
"linux-perf-users@vger.kernel.org"
<linux-perf-users@vger.kernel.org>
Subject: Re: [PATCH] s390: Add support for z13
Date: Thu, 13 Oct 2016 14:23:07 -0400 [thread overview]
Message-ID: <d4aeb84d-892d-3077-6f70-15b7536b1ba5@redhat.com> (raw)
In-Reply-To: <m3eg3kcjk4.fsf@oc1027705133.ibm.com>
On 10/13/2016 12:14 PM, Andreas Arnez wrote:
> On Wed, Oct 12 2016, William Cohen wrote:
>
>> Is there support for IBM z13 perf counters in the upstream linux
>> kernel? I didn't see perf support for IBM z13 in the mainline kernel
>> git repository.
>
> To my understanding, there is currently no support for z13-specific
> counters, but generic counters should still work. This certainly limits
> the number of available counters on z13 significantly.
>
> --
> Andreas
>
Hi Andreas,
In the past on x86_64 machine if the cpu wasn't identified the performance monitoring hardware would be not used at all. The upstream code arch/s390/kernel/perf_cpum_cf_events.c it doesn't identify the z13, but it does look like it falls back to cpumcf_pmu_event_attr array of events. However, I don't have much experience running things on IBM series machine, so want to verify that things are working on it.
-Will
prev parent reply other threads:[~2016-10-13 18:23 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <m3mvnwu1cy.fsf@oc1027705133.ibm.com>
[not found] ` <bb9acd86-0c7c-7291-00c1-1c6ad8576232@redhat.com>
[not found] ` <m360p8m87d.fsf@oc1027705133.ibm.com>
[not found] ` <d2177055-a1c3-7562-f555-bd239836af3e@redhat.com>
[not found] ` <alpine.LRH.2.20.1610042254100.6819@Diego>
[not found] ` <m3vax6lkon.fsf@oc1027705133.ibm.com>
[not found] ` <alpine.LRH.2.20.1610121546540.14258@Diego>
2016-10-12 20:27 ` [PATCH] s390: Add support for z13 William Cohen
2016-10-13 12:42 ` Michael Petlan
2016-10-13 14:15 ` William Cohen
2016-10-14 18:32 ` Andreas Arnez
2016-10-13 16:14 ` Andreas Arnez
2016-10-13 18:23 ` William Cohen [this message]
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