From: Reinette Chatre <reinette.chatre@intel.com>
To: Ben Horgan <ben.horgan@arm.com>, <linux-kernel@vger.kernel.org>
Cc: <tony.luck@intel.com>, <Dave.Martin@arm.com>,
<james.morse@arm.com>, <babu.moger@amd.com>, <tglx@kernel.org>,
<mingo@redhat.com>, <bp@alien8.de>, <dave.hansen@linux.intel.com>,
<x86@kernel.org>, <hpa@zytor.com>, <fenghuay@nvidia.com>,
<tan.shaopeng@fujitsu.com>
Subject: Re: [PATCH v1 2/4] fs/resctrl: Only show 'event_filter' files if events are configurable
Date: Mon, 2 Mar 2026 15:12:52 -0800 [thread overview]
Message-ID: <7c043aae-7495-4fa9-a630-ec9e1606cee5@intel.com> (raw)
In-Reply-To: <20260225201905.3568624-3-ben.horgan@arm.com>
Hi Ben,
On 2/25/26 12:19 PM, Ben Horgan wrote:
> When the counter assignment mode is mbm_event resctrl assumes the mbm
> events are configurable and exposes the 'event_filter' files. These files
> live at info/L3_MON/event_configs/<event>/event_filter and are used to
> display and set the event configuration.
>
> ABMC always supports event configuration but for MPAM they are
> independent. Decouple event configuration from counter assignment by only
Could you please elaborate what you mean with "independent" here? If event
configuration is still supported when assignable counter mode is enabled, why
can event configuration interface not just remain as-is? Could resctrl not
display the existing event configuration and if user cannot modify it return
a failure when user attempts to do so?
Reinette
next prev parent reply other threads:[~2026-03-02 23:13 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-25 20:19 [PATCH v1 0/4] x86,fs/resctrl: Pave the way for MPAM counter assignment Ben Horgan
2026-02-25 20:19 ` [PATCH v1 1/4] x86,fs/resctrl: Make resctrl_arch_is_evt_configurable() aware of mbm_assign_mode Ben Horgan
2026-03-02 23:11 ` Reinette Chatre
2026-03-03 12:29 ` Ben Horgan
2026-03-03 18:09 ` Reinette Chatre
2026-03-04 11:07 ` Ben Horgan
2026-03-04 17:02 ` Reinette Chatre
2026-03-04 17:37 ` Ben Horgan
2026-03-04 19:23 ` Reinette Chatre
2026-03-04 21:01 ` Ben Horgan
2026-03-04 22:50 ` Reinette Chatre
2026-03-05 10:01 ` Ben Horgan
2026-03-05 17:22 ` Reinette Chatre
2026-03-05 17:34 ` Ben Horgan
2026-02-25 20:19 ` [PATCH v1 2/4] fs/resctrl: Only show 'event_filter' files if events are configurable Ben Horgan
2026-03-02 23:12 ` Reinette Chatre [this message]
2026-03-03 14:00 ` Ben Horgan
2026-03-03 18:14 ` Reinette Chatre
2026-03-04 11:31 ` Ben Horgan
2026-03-04 17:03 ` Reinette Chatre
2026-03-04 17:53 ` Ben Horgan
2026-02-25 20:19 ` [PATCH v1 3/4] fs/resctrl: Disallow the software controller when mbm counters are assignable Ben Horgan
2026-02-25 20:19 ` [PATCH v1 4/4] arm_mpam: resctrl: Use new signature for resctrl_arch_is_evt_configurable() Ben Horgan
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