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From: Tony Luck <tony.luck@intel.com>
To: James Morse <james.morse@arm.com>
Cc: Reinette Chatre <reinette.chatre@intel.com>,
	x86@kernel.org, linux-kernel@vger.kernel.org,
	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, dfustini@baylibre.com
Subject: Re: [PATCH v5 06/24] x86/resctrl: Track the number of dirty RMID a CLOSID has
Date: Wed, 30 Aug 2023 15:32:42 -0700	[thread overview]
Message-ID: <ZO/DiqemqXqj8P3u@agluck-desk3> (raw)
In-Reply-To: <20b566d9-448b-5367-b4db-593466e7a2f8@arm.com>

On Thu, Aug 24, 2023 at 05:53:03PM +0100, James Morse wrote:
> Something on my eternal-todo-list is to make the filesystem parts of resctrl a loadable
> module (if Tony doesn't get there first!). That would flush this sort of thing out.
> Last time I triggered resctrl_exit() manually not all of the files got cleaned up - I
> haven't investigated it further.

James,

I looked at going to a full loadable module approach for about 3 seconds,
and found none of the kernfs support functions are exported. So I also
put that on the eternal-todo-list :-)

There are possibly a few other functions that need exporting like
get_cpu_cacheinfo(), and two or three others from the "perf"
code for pseudo-lock debugfs support.

-Tony

P.S. Latest version of my re-write is at:

https://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux.git/log/?h=resctrl2_v65rc7

Well, almost latest. I haven't pushed the changes to auto-load all the
modules for basic X86 functions based on X86_FEATURE_* bits.

  parent reply	other threads:[~2023-08-30 22:33 UTC|newest]

Thread overview: 77+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-07-28 16:42 [PATCH v5 00/24] x86/resctrl: monitored closid+rmid together, separate arch/fs locking James Morse
2023-07-28 16:42 ` [PATCH v5 01/24] x86/resctrl: Track the closid with the rmid James Morse
2023-08-09 22:32   ` Reinette Chatre
2023-08-24 16:50     ` James Morse
2023-08-15  0:09   ` Fenghua Yu
2023-07-28 16:42 ` [PATCH v5 02/24] x86/resctrl: Access per-rmid structures by index James Morse
2023-08-09 22:32   ` Reinette Chatre
2023-08-24 16:51     ` James Morse
2023-08-25  0:29       ` Reinette Chatre
2023-07-28 16:42 ` [PATCH v5 03/24] x86/resctrl: Create helper for RMID allocation and mondata dir creation James Morse
2023-08-09 22:32   ` Reinette Chatre
2023-07-28 16:42 ` [PATCH v5 04/24] x86/resctrl: Move rmid allocation out of mkdir_rdt_prepare() James Morse
2023-08-15  0:50   ` Fenghua Yu
2023-08-24 16:52     ` James Morse
2023-07-28 16:42 ` [PATCH v5 05/24] x86/resctrl: Allow RMID allocation to be scoped by CLOSID James Morse
2023-08-09 22:33   ` Reinette Chatre
2023-08-15  1:22   ` Fenghua Yu
2023-07-28 16:42 ` [PATCH v5 06/24] x86/resctrl: Track the number of dirty RMID a CLOSID has James Morse
2023-08-09 22:33   ` Reinette Chatre
2023-08-24 16:53     ` James Morse
2023-08-24 22:58       ` Reinette Chatre
2023-08-30 22:32       ` Tony Luck [this message]
2023-08-14 23:58   ` Fenghua Yu
2023-08-15  2:37   ` Fenghua Yu
2023-08-24 16:53     ` James Morse
2023-07-28 16:42 ` [PATCH v5 07/24] x86/resctrl: Use set_bit()/clear_bit() instead of open coding James Morse
2023-07-28 16:42 ` [PATCH v5 08/24] x86/resctrl: Allocate the cleanest CLOSID by searching closid_num_dirty_rmid James Morse
2023-08-15  2:59   ` Fenghua Yu
2023-08-24 16:54     ` James Morse
2023-07-28 16:42 ` [PATCH v5 09/24] x86/resctrl: Move CLOSID/RMID matching and setting to use helpers James Morse
2023-07-28 16:42 ` [PATCH v5 10/24] tick/nohz: Move tick_nohz_full_mask declaration outside the #ifdef James Morse
2023-08-09 22:34   ` Reinette Chatre
2023-08-24 16:55     ` James Morse
2023-08-25  0:43       ` Reinette Chatre
2023-09-08 15:58         ` James Morse
2023-07-28 16:42 ` [PATCH v5 11/24] x86/resctrl: Add cpumask_any_housekeeping() for limbo/overflow James Morse
2023-07-28 16:42 ` [PATCH v5 12/24] x86/resctrl: Make resctrl_arch_rmid_read() retry when it is interrupted James Morse
2023-08-09 22:35   ` Reinette Chatre
2023-08-24 16:55     ` James Morse
2023-08-24 23:01       ` Reinette Chatre
2023-09-08 15:58         ` James Morse
2023-09-08 20:15           ` Reinette Chatre
2023-07-28 16:42 ` [PATCH v5 13/24] x86/resctrl: Queue mon_event_read() instead of sending an IPI James Morse
2023-07-28 16:42 ` [PATCH v5 14/24] x86/resctrl: Allow resctrl_arch_rmid_read() to sleep James Morse
2023-08-09 22:36   ` Reinette Chatre
2023-08-24 16:56     ` James Morse
2023-08-24 23:02       ` Reinette Chatre
2023-09-08 15:58         ` James Morse
2023-09-08 20:15           ` Reinette Chatre
2023-07-28 16:42 ` [PATCH v5 15/24] x86/resctrl: Allow arch to allocate memory needed in resctrl_arch_rmid_read() James Morse
2023-08-09 22:37   ` Reinette Chatre
2023-08-24 16:56     ` James Morse
2023-08-24 23:04       ` Reinette Chatre
2023-09-15 17:37         ` James Morse
2023-07-28 16:42 ` [PATCH v5 16/24] x86/resctrl: Make resctrl_mounted checks explicit James Morse
2023-07-28 16:42 ` [PATCH v5 17/24] x86/resctrl: Move alloc/mon static keys into helpers James Morse
2023-07-28 16:42 ` [PATCH v5 18/24] x86/resctrl: Make rdt_enable_key the arch's decision to switch James Morse
2023-07-28 16:42 ` [PATCH v5 19/24] x86/resctrl: Add helpers for system wide mon/alloc capable James Morse
2023-08-17 18:34   ` Fenghua Yu
2023-08-24 16:57     ` James Morse
2023-07-28 16:42 ` [PATCH v5 20/24] x86/resctrl: Add cpu online callback for resctrl work James Morse
2023-08-09 22:38   ` Reinette Chatre
2023-07-28 16:42 ` [PATCH v5 21/24] x86/resctrl: Allow overflow/limbo handlers to be scheduled on any-but cpu James Morse
2023-08-09 22:38   ` Reinette Chatre
2023-08-24 16:57     ` James Morse
2023-07-28 16:42 ` [PATCH v5 22/24] x86/resctrl: Add cpu offline callback for resctrl work James Morse
2023-07-28 16:42 ` [PATCH v5 23/24] x86/resctrl: Move domain helper migration into resctrl_offline_cpu() James Morse
2023-08-09 22:39   ` Reinette Chatre
2023-07-28 16:42 ` [PATCH v5 24/24] x86/resctrl: Separate arch and fs resctrl locks James Morse
2023-08-09 22:41   ` Reinette Chatre
2023-08-24 16:57     ` James Morse
2023-08-18 22:05   ` Fenghua Yu
2023-08-24 16:58     ` James Morse
2023-08-03  7:34 ` [PATCH v5 00/24] x86/resctrl: monitored closid+rmid together, separate arch/fs locking Shaopeng Tan (Fujitsu)
2023-08-24 16:58   ` James Morse
2023-08-22  8:42 ` Peter Newman
2023-08-24 16:58   ` James Morse

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