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Message-ID: <b2966d36-751a-480c-be75-548d29798a92@intel.com>
Date: Thu, 17 Jul 2025 11:46:37 -0700
From: Reinette Chatre <reinette.chatre@...el.com>
To: Babu Moger <babu.moger@....com>, <corbet@....net>, <tony.luck@...el.com>,
<james.morse@....com>, <tglx@...utronix.de>, <mingo@...hat.com>,
<bp@...en8.de>, <dave.hansen@...ux.intel.com>
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<akpm@...ux-foundation.org>, <paulmck@...nel.org>, <rostedt@...dmis.org>,
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<linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
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Subject: Re: [PATCH v15 11/34] fs/resctrl: Add resctrl file to display number
of assignable counters
Hi Babu,
On 7/8/25 3:17 PM, Babu Moger wrote:
> The "mbm_event" counter assignment mode allows users to assign a hardware
> counter to an RMID, event pair and monitor bandwidth usage as long as it is
> assigned. The hardware continues to track the assigned counter until it is
> explicitly unassigned by the user.
>
> Create 'num_mbm_cntrs' resctrl file that displays the number of counters
> supported in each domain. 'num_mbm_cntrs' is only visible to user space
> when the system supports "mbm_event" mode.
>
> Signed-off-by: Babu Moger <babu.moger@....com>
> ---
Reviewed-by: Reinette Chatre <reinette.chatre@...el.com>
Reinette
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