From: "Moger, Babu" <babu.moger@amd.com>
To: Reinette Chatre <reinette.chatre@intel.com>,
Borislav Petkov <bp@alien8.de>
Cc: "Luck, Tony" <tony.luck@intel.com>,
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Subject: Re: [PATCH v11 04/13] x86/cpufeatures: Add Bandwidth Monitoring Event Configuration feature flag
Date: Tue, 24 Jan 2023 13:03:32 -0600 [thread overview]
Message-ID: <2cf1380e-ed98-d943-e492-ebbe9238b51c@amd.com> (raw)
In-Reply-To: <f6e24e38-31d4-e2f4-4dc1-13208a427a77@intel.com>
On 1/24/23 11:47, Reinette Chatre wrote:
> Hi Babu,
>
> On 1/24/2023 9:30 AM, Moger, Babu wrote:
>> On 1/24/23 10:59, Reinette Chatre wrote:
>>> On 1/24/2023 8:06 AM, Moger, Babu wrote:
>>>> On 1/24/23 09:10, Borislav Petkov wrote:
>>>>> On Tue, Jan 24, 2023 at 08:11:21AM -0600, Moger, Babu wrote:
>>>>>> Understood. I am planning to add resctrl feature list inside
>>>>>> /sys/fs/resctrl/info/ in my next series.
>>>>> Maybe I wasn't as clear as I hoped for:
>>>>>
>>>>> so you have a couple of flags in /proc/cpuinfo which are actively being used by
>>>>> tools.
>>>> Those flags will be there. Not planning to remove them.
>>>>> Why would you want to move the flags somewhere else and do the extra work for no
>>>>> apparent reason?
>>>> With this series(v12) we have added two new cpuid features(SMBA and BMEC).
>>>>
>>>> But these features are not visible in /proc/cpuinfo. Planning to add them
>>>> in /sys/fs/resctrl/info.
>>>>
>>>> So, users can see them here.
>>> Could you please elaborate what you are planning to do?
>> Yes. It is sort of available. But, I wanted to add them explicit using the
>> already available function rdt_cpu_has().
>>
>> Something like.
>>
>> #cat /sys/fs/resctrl/info/features
>>
>> cmt, mbmtotal, mbmlocal, l3cat, mba, smba, bmec
>>
>>
>> Some of these features can be disabled using boot parameter options. So,
>> this will show only the features which enabled.
>>
> From what I understand the only feature that needs additional help is CDP
> and it appears in /proc/cpuinfo. For all other features
> /sys/fs/resctrl/info already provides information when they are enabled, no?
Yes. It is available. But, the feature BMEC is not explicitly available.
I was thinking making all of them explicit. But we can live with that for
now. We can think about this in the future. Thanks for the comments.
Thanks
Babu
> Reinette
>
--
Thanks
Babu Moger
next prev parent reply other threads:[~2023-01-24 19:03 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-09 16:43 [PATCH v11 00/13] x86/resctrl: Support for AMD QoS new features Babu Moger
2023-01-09 16:43 ` [PATCH v11 01/13] x86/resctrl: Replace smp_call_function_many() with on_each_cpu_mask() Babu Moger
2023-01-09 23:26 ` Ashok Raj
2023-01-10 2:23 ` Moger, Babu
2023-01-10 20:58 ` Luck, Tony
2023-01-11 15:42 ` Ashok Raj
2023-01-11 19:05 ` Luck, Tony
2023-01-11 23:21 ` Ashok Raj
2023-01-09 16:43 ` [PATCH v11 02/13] x86/cpufeatures: Add Slow Memory Bandwidth Allocation feature flag Babu Moger
2023-01-09 16:43 ` [PATCH v11 03/13] x86/resctrl: Add a new resource type RDT_RESOURCE_SMBA Babu Moger
2023-01-09 16:43 ` [PATCH v11 04/13] x86/cpufeatures: Add Bandwidth Monitoring Event Configuration feature flag Babu Moger
2023-01-09 18:58 ` Borislav Petkov
2023-01-09 19:49 ` Moger, Babu
2023-01-09 21:07 ` Borislav Petkov
2023-01-09 21:25 ` Luck, Tony
2023-01-09 21:39 ` Borislav Petkov
2023-01-09 21:50 ` Luck, Tony
2023-01-24 11:28 ` Borislav Petkov
2023-01-09 23:43 ` Reinette Chatre
2023-01-24 11:32 ` Borislav Petkov
2023-01-09 21:44 ` Moger, Babu
2023-01-09 21:51 ` Borislav Petkov
2023-01-09 23:10 ` Moger, Babu
2023-01-24 11:34 ` Borislav Petkov
2023-01-24 14:11 ` Moger, Babu
2023-01-24 15:10 ` Borislav Petkov
2023-01-24 16:06 ` Moger, Babu
2023-01-24 16:59 ` Reinette Chatre
2023-01-24 17:30 ` Moger, Babu
2023-01-24 17:47 ` Reinette Chatre
2023-01-24 19:03 ` Moger, Babu [this message]
2023-01-24 19:11 ` Borislav Petkov
2023-01-24 19:23 ` Reinette Chatre
2023-01-24 20:12 ` Moger, Babu
2023-01-09 16:43 ` [PATCH v11 05/13] x86/resctrl: Include new features in command line options Babu Moger
2023-01-09 16:43 ` [PATCH v11 06/13] x86/resctrl: Detect and configure Slow Memory Bandwidth Allocation Babu Moger
2023-01-09 16:43 ` [PATCH v11 07/13] x86/resctrl: Add __init attribute to rdt_get_mon_l3_config() Babu Moger
2023-01-09 16:44 ` [PATCH v11 08/13] x86/resctrl: Support monitor configuration Babu Moger
2023-01-09 16:44 ` [PATCH v11 09/13] x86/resctrl: Add interface to read mbm_total_bytes_config Babu Moger
2023-01-09 16:44 ` [PATCH v11 10/13] x86/resctrl: Add interface to read mbm_local_bytes_config Babu Moger
2023-01-09 16:44 ` [PATCH v11 11/13] x86/resctrl: Add interface to write mbm_total_bytes_config Babu Moger
2023-01-11 22:04 ` Reinette Chatre
2023-01-09 16:44 ` [PATCH v11 12/13] x86/resctrl: Add interface to write mbm_local_bytes_config Babu Moger
2023-01-09 16:44 ` [PATCH v11 13/13] Documentation/x86: Update resctrl.rst for new features Babu Moger
2023-01-11 22:06 ` Reinette Chatre
2023-01-11 22:39 ` Moger, Babu
2023-01-11 22:56 ` Reinette Chatre
2023-01-12 0:39 ` Moger, Babu
2023-01-12 0:47 ` Moger, Babu
2023-01-12 17:30 ` Reinette Chatre
2023-01-12 19:06 ` Moger, Babu
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