From: James Morse <james.morse@arm.com>
To: Reinette Chatre <reinette.chatre@intel.com>,
x86@kernel.org, linux-kernel@vger.kernel.org
Cc: Fenghua Yu <fenghua.yu@intel.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
H Peter Anvin <hpa@zytor.com>, Babu Moger <Babu.Moger@amd.com>,
shameerali.kolothum.thodi@huawei.com,
D Scott Phillips OS <scott@os.amperecomputing.com>,
carl@os.amperecomputing.com, lcherian@marvell.com,
bobo.shaobowang@huawei.com, tan.shaopeng@fujitsu.com,
xingxin.hx@openanolis.org, baolin.wang@linux.alibaba.com,
Jamie Iles <quic_jiles@quicinc.com>,
Xin Hao <xhao@linux.alibaba.com>,
peternewman@google.com
Subject: Re: [PATCH v3 15/19] x86/resctrl: Add helpers for system wide mon/alloc capable
Date: Thu, 27 Apr 2023 15:19:47 +0100 [thread overview]
Message-ID: <bda01f60-e6fc-1c30-ba54-45abcbbc8e0a@arm.com> (raw)
In-Reply-To: <80e2962e-0aa6-c939-8f69-8f0cda988cbe@intel.com>
On 01/04/2023 00:29, Reinette Chatre wrote:
> Hi James,
>
> On 3/20/2023 10:26 AM, James Morse wrote:
>> resctrl reads rdt_alloc_capable or rdt_mon_capable to determine
>> whether any of the resources support the corresponding features.
>> resctrl also uses the static-keys that affect the architecture's
>> context-switch code to determine the same thing.
>
> hmmm ... they are not the same though since the static-keys
> in addition means that resctrl is mounted.
and all the paths where this matters were updated in patch 12 to have an explicit
resctrl_mounted check.
Thanks,
James
next prev parent reply other threads:[~2023-04-27 14:20 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-20 17:26 [PATCH v3 00/19] x86/resctrl: monitored closid+rmid together, separate arch/fs locking James Morse
2023-03-20 17:26 ` [PATCH v3 01/19] x86/resctrl: Track the closid with the rmid James Morse
2023-03-20 17:26 ` [PATCH v3 02/19] x86/resctrl: Access per-rmid structures by index James Morse
2023-03-21 10:57 ` Ilpo Järvinen
2023-03-31 23:19 ` Reinette Chatre
2023-04-24 13:06 ` Peter Newman
2023-05-25 17:32 ` James Morse
2023-03-20 17:26 ` [PATCH v3 03/19] x86/resctrl: Create helper for RMID allocation and mondata dir creation James Morse
2023-03-21 11:05 ` Ilpo Järvinen
2023-03-31 23:20 ` Reinette Chatre
2023-03-20 17:26 ` [PATCH v3 04/19] x86/resctrl: Move rmid allocation out of mkdir_rdt_prepare() James Morse
2023-03-20 17:26 ` [PATCH v3 05/19] x86/resctrl: Allow RMID allocation to be scoped by CLOSID James Morse
2023-03-21 11:29 ` Ilpo Järvinen
2023-03-20 17:26 ` [PATCH v3 06/19] x86/resctrl: Allow the allocator to check if a CLOSID can allocate clean RMID James Morse
2023-03-31 23:21 ` Reinette Chatre
2023-04-27 14:09 ` James Morse
2023-03-20 17:26 ` [PATCH v3 07/19] x86/resctrl: Move CLOSID/RMID matching and setting to use helpers James Morse
2023-03-20 17:26 ` [PATCH v3 08/19] x86/resctrl: Add cpumask_any_housekeeping() for limbo/overflow James Morse
2023-03-21 13:21 ` Ilpo Järvinen
2023-04-27 14:09 ` James Morse
2023-03-21 15:14 ` Ilpo Järvinen
2023-04-27 14:09 ` James Morse
2023-04-27 14:25 ` Ilpo Järvinen
2023-05-25 17:32 ` James Morse
2023-03-31 23:24 ` Reinette Chatre
2023-04-27 14:10 ` James Morse
2023-04-27 23:36 ` Reinette Chatre
2023-05-25 17:32 ` James Morse
2023-03-20 17:26 ` [PATCH v3 09/19] x86/resctrl: Queue mon_event_read() instead of sending an IPI James Morse
2023-03-22 14:07 ` Peter Newman
2023-03-23 9:09 ` Peter Newman
2023-04-27 14:12 ` James Morse
2023-04-27 14:11 ` James Morse
2023-03-31 23:25 ` Reinette Chatre
2023-04-27 14:12 ` James Morse
2023-03-20 17:26 ` [PATCH v3 10/19] x86/resctrl: Allow resctrl_arch_rmid_read() to sleep James Morse
2023-03-31 23:26 ` Reinette Chatre
2023-04-27 14:12 ` James Morse
2023-03-20 17:26 ` [PATCH v3 11/19] x86/resctrl: Allow arch to allocate memory needed in resctrl_arch_rmid_read() James Morse
2023-03-31 23:27 ` Reinette Chatre
2023-04-27 14:19 ` James Morse
2023-04-27 23:40 ` Reinette Chatre
2023-05-25 17:31 ` James Morse
2023-03-20 17:26 ` [PATCH v3 12/19] x86/resctrl: Make resctrl_mounted checks explicit James Morse
2023-03-31 23:28 ` Reinette Chatre
2023-04-27 14:19 ` James Morse
2023-04-27 23:37 ` Reinette Chatre
2023-05-25 17:31 ` James Morse
2023-03-20 17:26 ` [PATCH v3 13/19] x86/resctrl: Move alloc/mon static keys into helpers James Morse
2023-03-20 17:26 ` [PATCH v3 14/19] x86/resctrl: Make rdt_enable_key the arch's decision to switch James Morse
2023-03-20 17:26 ` [PATCH v3 15/19] x86/resctrl: Add helpers for system wide mon/alloc capable James Morse
2023-03-31 23:29 ` Reinette Chatre
2023-04-27 14:19 ` James Morse [this message]
2023-03-20 17:26 ` [PATCH v3 16/19] x86/resctrl: Add cpu online callback for resctrl work James Morse
2023-03-31 23:29 ` Reinette Chatre
2023-03-20 17:26 ` [PATCH v3 17/19] x86/resctrl: Allow overflow/limbo handlers to be scheduled on any-but cpu James Morse
2023-03-21 15:12 ` Ilpo Järvinen
2023-03-21 15:25 ` Ilpo Järvinen
2023-04-27 14:20 ` James Morse
2023-03-20 17:26 ` [PATCH v3 18/19] x86/resctrl: Add cpu offline callback for resctrl work James Morse
2023-03-21 15:32 ` Ilpo Järvinen
2023-04-27 14:20 ` James Morse
2023-04-27 14:51 ` Ilpo Järvinen
2023-04-05 23:48 ` Reinette Chatre
2023-04-27 14:20 ` James Morse
2023-03-20 17:26 ` [PATCH v3 19/19] x86/resctrl: Separate arch and fs resctrl locks James Morse
2023-05-23 17:14 ` [PATCH v3 00/19] x86/resctrl: monitored closid+rmid together, separate arch/fs locking Tony Luck
2023-05-25 17:31 ` James Morse
2023-05-25 21:00 ` Tony Luck
2023-05-28 20:52 ` Drew Fustini
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