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From: Carl Worth <carl@os.amperecomputing.com>
To: James Morse <james.morse@arm.com>,
	x86@kernel.org, linux-kernel@vger.kernel.org
Cc: Fenghua Yu <fenghua.yu@intel.com>,
	Reinette Chatre <reinette.chatre@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>,
	James Morse <james.morse@arm.com>,
	shameerali.kolothum.thodi@huawei.com,
	D Scott Phillips OS <scott@os.amperecomputing.com>,
	lcherian@marvell.com, bobo.shaobowang@huawei.com,
	tan.shaopeng@fujitsu.com, baolin.wang@linux.alibaba.com,
	Jamie Iles <quic_jiles@quicinc.com>,
	Xin Hao <xhao@linux.alibaba.com>,
	peternewman@google.com, dfustini@baylibre.com,
	amitsinght@marvell.com
Subject: Re: [PATCH v8 00/24] x86/resctrl: monitored closid+rmid together, separate arch/fs locking
Date: Fri, 22 Dec 2023 14:43:43 -0800	[thread overview]
Message-ID: <874jg9rh7k.fsf@rasp.cworth.amperemail.amperecomputing.com> (raw)
In-Reply-To: <20231215174343.13872-1-james.morse@arm.com>

James Morse <james.morse@arm.com> writes:
> This series does two things, it changes resctrl to call resctrl_arch_rmid_read()
> in a way that works for MPAM, and it separates the locking so that the arch code
> and filesystem code don't have to share a mutex. I tried to split this as two
> series, but these touch similar call sites, so it would create more work.
>
> (What's MPAM? See the cover letter of the first series. [1])

Thanks, James. This is really useful for us at Ampere since it enables
the MPAM driver on top of this series.

I've tested this series on an Ampere implementation, by successfully
using resctrl to configure and exercise MPAM functionality. I can't
speak to the effects of the refactor on x86 since I have not tested that
all.

For the series:

Tested-by: Carl Worth <carl@os.amperecomputing.com>

-Carl

  parent reply	other threads:[~2023-12-22 22:43 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-12-15 17:43 [PATCH v8 00/24] x86/resctrl: monitored closid+rmid together, separate arch/fs locking James Morse
2023-12-15 17:43 ` [PATCH v8 01/24] tick/nohz: Move tick_nohz_full_mask declaration outside the #ifdef James Morse
2023-12-15 20:31   ` Thomas Gleixner
2024-01-22 18:05     ` James Morse
2023-12-15 17:43 ` [PATCH v8 02/24] x86/resctrl: kfree() rmid_ptrs from resctrl_exit() James Morse
2023-12-16  4:57   ` Reinette Chatre
2023-12-15 17:43 ` [PATCH v8 03/24] x86/resctrl: Create helper for RMID allocation and mondata dir creation James Morse
2023-12-15 17:43 ` [PATCH v8 04/24] x86/resctrl: Move rmid allocation out of mkdir_rdt_prepare() James Morse
2023-12-15 17:43 ` [PATCH v8 05/24] x86/resctrl: Track the closid with the rmid James Morse
2023-12-16  4:58   ` Reinette Chatre
2024-01-22 18:05     ` James Morse
2023-12-15 17:43 ` [PATCH v8 06/24] x86/resctrl: Access per-rmid structures by index James Morse
2023-12-16  4:58   ` Reinette Chatre
2024-01-22 18:05     ` James Morse
2023-12-15 17:43 ` [PATCH v8 07/24] x86/resctrl: Allow RMID allocation to be scoped by CLOSID James Morse
2023-12-15 17:43 ` [PATCH v8 08/24] x86/resctrl: Track the number of dirty RMID a CLOSID has James Morse
2024-01-03 19:43   ` Moger, Babu
2024-01-22 18:05     ` James Morse
2024-01-04 19:13   ` Peter Newman
2024-01-22 18:05     ` James Morse
2023-12-15 17:43 ` [PATCH v8 09/24] x86/resctrl: Use __set_bit()/__clear_bit() instead of open coding James Morse
2023-12-15 17:43 ` [PATCH v8 10/24] x86/resctrl: Allocate the cleanest CLOSID by searching closid_num_dirty_rmid James Morse
2023-12-16  5:01   ` Reinette Chatre
2024-01-22 18:06     ` James Morse
2023-12-15 17:43 ` [PATCH v8 11/24] x86/resctrl: Move CLOSID/RMID matching and setting to use helpers James Morse
2023-12-15 17:43 ` [PATCH v8 12/24] x86/resctrl: Add cpumask_any_housekeeping() for limbo/overflow James Morse
2023-12-15 17:43 ` [PATCH v8 13/24] x86/resctrl: Queue mon_event_read() instead of sending an IPI James Morse
2024-01-03 19:43   ` Moger, Babu
2024-01-22 18:06     ` James Morse
2023-12-15 17:43 ` [PATCH v8 14/24] x86/resctrl: Allow resctrl_arch_rmid_read() to sleep James Morse
2024-01-03 19:43   ` Moger, Babu
2024-01-22 18:06     ` James Morse
2023-12-15 17:43 ` [PATCH v8 15/24] x86/resctrl: Allow arch to allocate memory needed in resctrl_arch_rmid_read() James Morse
2023-12-15 17:43 ` [PATCH v8 16/24] x86/resctrl: Make resctrl_mounted checks explicit James Morse
2023-12-15 17:43 ` [PATCH v8 17/24] x86/resctrl: Move alloc/mon static keys into helpers James Morse
2023-12-15 17:43 ` [PATCH v8 18/24] x86/resctrl: Make rdt_enable_key the arch's decision to switch James Morse
2023-12-15 17:43 ` [PATCH v8 19/24] x86/resctrl: Add helpers for system wide mon/alloc capable James Morse
2024-01-03 19:43   ` Moger, Babu
2024-01-22 18:06     ` James Morse
2023-12-15 17:43 ` [PATCH v8 20/24] x86/resctrl: Add CPU online callback for resctrl work James Morse
2023-12-15 17:43 ` [PATCH v8 21/24] x86/resctrl: Allow overflow/limbo handlers to be scheduled on any-but cpu James Morse
2023-12-16  5:02   ` Reinette Chatre
2024-01-22 18:06     ` James Morse
2023-12-15 17:43 ` [PATCH v8 22/24] x86/resctrl: Add CPU offline callback for resctrl work James Morse
2023-12-15 17:43 ` [PATCH v8 23/24] x86/resctrl: Move domain helper migration into resctrl_offline_cpu() James Morse
2023-12-15 17:43 ` [PATCH v8 24/24] x86/resctrl: Separate arch and fs resctrl locks James Morse
2023-12-22 22:43 ` Carl Worth [this message]
2024-01-22 18:06   ` [PATCH v8 00/24] x86/resctrl: monitored closid+rmid together, separate arch/fs locking James Morse
2024-01-03 19:42 ` Moger, Babu
2024-01-22 18:06   ` James Morse

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