From: Markus Elfring <Markus.Elfring@web.de>
To: James Morse <james.morse@arm.com>,
linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org
Cc: LKML <linux-kernel@vger.kernel.org>,
Amit Singh Tomar <amitsinght@marvell.com>,
Baisheng Gao <baisheng.gao@unisoc.com>,
Baolin Wang <baolin.wang@linux.alibaba.com>,
Carl Worth <carl@os.amperecomputing.com>,
Catalin Marinas <catalin.marinas@arm.com>,
D Scott Phillips <scott@os.amperecomputing.com>,
Danilo Krummrich <dakr@kernel.org>,
Dave Martin <Dave.Martin@arm.com>,
David Hildenbrand <david@redhat.com>,
Drew Fustini <dfustini@baylibre.com>,
Fenghua Yu <fenghuay@nvidia.com>, Gavin Shan <gshan@redhat.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Hanjun Guo <guohanjun@huawei.com>,
Jamie Iles <quic_jiles@quicinc.com>,
Jeremy Linton <jeremy.linton@arm.com>,
Jonathan Cameron <Jonathan.Cameron@huawei.com>,
Koba Ko <kobak@nvidia.com>, Len Brown <lenb@kernel.org>,
Linu Cherian <lcherian@marvell.com>,
Lorenzo Pieralisi <lpieralisi@kernel.org>,
Peter Newman <peternewman@google.com>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Rob Herring <robh@kernel.org>,
Rohit Mathew <rohit.mathew@arm.com>,
Shanker Donthineni <sdonthineni@nvidia.com>,
Shaopeng Tan <tan.shaopeng@fujitsu.com>,
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Wang ShaoBo <bobo.shaobowang@huawei.com>,
Will Deacon <will@kernel.org>, Xin Hao <xhao@linux.alibaba.com>
Subject: Re: [PATCH v3 07/29] arm_mpam: Add probe/remove for mpam msc driver and kbuild boiler plate
Date: Thu, 6 Nov 2025 18:48:10 +0100 [thread overview]
Message-ID: <63b2c31c-6759-42aa-b54b-08764d88c57a@web.de> (raw)
In-Reply-To: <20251017185645.26604-8-james.morse@arm.com>
…
> +++ b/drivers/resctrl/mpam_devices.c
> @@ -0,0 +1,190 @@
…
> +static void mpam_msc_drv_remove(struct platform_device *pdev)
> +{
…
> + mutex_lock(&mpam_list_lock);
> + mpam_msc_destroy(msc);
> + mutex_unlock(&mpam_list_lock);
> +
> + synchronize_srcu(&mpam_srcu);
> +}
…
Under which circumstances would you become interested to apply a statement
like “guard(mutex)(&mpam_list_lock);”?
https://elixir.bootlin.com/linux/v6.18-rc4/source/include/linux/mutex.h#L228
Regards,
Markus
next prev parent reply other threads:[~2025-11-06 17:48 UTC|newest]
Thread overview: 108+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-17 18:56 [PATCH v3 00/29] arm_mpam: Add basic mpam driver James Morse
2025-10-17 18:56 ` [PATCH v3 01/29] ACPI / PPTT: Add a helper to fill a cpumask from a processor container James Morse
2025-10-24 11:26 ` Jonathan Cameron
2025-11-06 16:09 ` Ben Horgan
2025-10-17 18:56 ` [PATCH v3 02/29] ACPI / PPTT: Stop acpi_count_levels() expecting callers to clear levels James Morse
2025-10-24 11:29 ` Jonathan Cameron
2025-11-06 16:10 ` Ben Horgan
2025-10-17 18:56 ` [PATCH v3 03/29] ACPI / PPTT: Find cache level by cache-id James Morse
2025-10-20 10:34 ` Ben Horgan
2025-10-24 14:15 ` Jonathan Cameron
2025-10-17 18:56 ` [PATCH v3 04/29] ACPI / PPTT: Add a helper to fill a cpumask from a cache_id James Morse
2025-10-20 10:45 ` Ben Horgan
2025-10-22 12:58 ` Jeremy Linton
2025-10-24 14:22 ` Jonathan Cameron
2025-11-06 16:18 ` Ben Horgan
2025-10-17 18:56 ` [PATCH v3 05/29] arm64: kconfig: Add Kconfig entry for MPAM James Morse
2025-10-17 18:56 ` [PATCH v3 06/29] ACPI / MPAM: Parse the MPAM table James Morse
2025-10-20 12:29 ` Ben Horgan
2025-10-24 16:13 ` Jonathan Cameron
2025-11-06 16:55 ` Ben Horgan
2025-10-17 18:56 ` [PATCH v3 07/29] arm_mpam: Add probe/remove for mpam msc driver and kbuild boiler plate James Morse
2025-10-20 12:43 ` Ben Horgan
2025-10-20 15:44 ` Ben Horgan
2025-10-21 9:51 ` Ben Horgan
2025-10-22 0:29 ` Fenghua Yu
2025-10-22 19:00 ` Tushar Dave
2025-10-24 16:25 ` Jonathan Cameron
2025-11-06 17:48 ` Markus Elfring [this message]
2025-10-17 18:56 ` [PATCH v3 08/29] arm_mpam: Add the class and component structures for firmware described ris James Morse
2025-10-24 16:47 ` Jonathan Cameron
2025-11-06 17:43 ` Ben Horgan
2025-10-17 18:56 ` [PATCH v3 09/29] arm_mpam: Add MPAM MSC register layout definitions James Morse
2025-10-17 23:03 ` Fenghua Yu
2025-10-24 17:32 ` Jonathan Cameron
2025-10-27 16:33 ` Ben Horgan
2025-10-29 6:37 ` Shaopeng Tan (Fujitsu)
2025-10-17 18:56 ` [PATCH v3 10/29] arm_mpam: Add cpuhp callbacks to probe MSC hardware James Morse
2025-10-29 7:24 ` Shaopeng Tan (Fujitsu)
2025-10-17 18:56 ` [PATCH v3 11/29] arm_mpam: Probe hardware to find the supported partid/pmg values James Morse
2025-10-24 17:40 ` Jonathan Cameron
2025-10-17 18:56 ` [PATCH v3 12/29] arm_mpam: Add helpers for managing the locking around the mon_sel registers James Morse
2025-10-24 17:43 ` Jonathan Cameron
2025-10-17 18:56 ` [PATCH v3 13/29] arm_mpam: Probe the hardware features resctrl supports James Morse
2025-10-24 17:47 ` Jonathan Cameron
2025-10-17 18:56 ` [PATCH v3 14/29] arm_mpam: Merge supported features during mpam_enable() into mpam_class James Morse
2025-10-17 18:56 ` [PATCH v3 15/29] arm_mpam: Reset MSC controls from cpuhp callbacks James Morse
2025-10-24 17:52 ` Jonathan Cameron
2025-10-29 6:53 ` Shaopeng Tan (Fujitsu)
2025-10-17 18:56 ` [PATCH v3 16/29] arm_mpam: Add a helper to touch an MSC from any CPU James Morse
2025-10-17 18:56 ` [PATCH v3 17/29] arm_mpam: Extend reset logic to allow devices to be reset any time James Morse
2025-10-20 15:14 ` Ben Horgan
2025-10-17 18:56 ` [PATCH v3 18/29] arm_mpam: Register and enable IRQs James Morse
2025-10-24 18:03 ` Jonathan Cameron
2025-10-29 7:02 ` Shaopeng Tan (Fujitsu)
2025-10-17 18:56 ` [PATCH v3 19/29] arm_mpam: Use a static key to indicate when mpam is enabled James Morse
2025-10-20 16:28 ` Ben Horgan
2025-10-17 18:56 ` [PATCH v3 20/29] arm_mpam: Allow configuration to be applied and restored during cpu online James Morse
2025-10-20 17:04 ` Ben Horgan
2025-10-27 8:47 ` Shaopeng Tan (Fujitsu)
2025-11-05 16:16 ` Peter Newman
2025-11-06 10:11 ` Ben Horgan
2025-10-29 7:09 ` Shaopeng Tan (Fujitsu)
2025-10-17 18:56 ` [PATCH v3 21/29] arm_mpam: Probe and reset the rest of the features James Morse
2025-10-20 17:16 ` Ben Horgan
2025-10-17 18:56 ` [PATCH v3 22/29] arm_mpam: Add helpers to allocate monitors James Morse
2025-10-17 18:56 ` [PATCH v3 23/29] arm_mpam: Add mpam_msmon_read() to read monitor value James Morse
2025-10-24 18:18 ` Jonathan Cameron
2025-11-05 8:32 ` Shaopeng Tan (Fujitsu)
2025-11-05 12:11 ` Ben Horgan
2025-11-07 5:01 ` Shaopeng Tan (Fujitsu)
2025-11-07 10:01 ` Ben Horgan
2025-10-17 18:56 ` [PATCH v3 24/29] arm_mpam: Track bandwidth counter state for overflow and power management James Morse
2025-10-22 13:39 ` [PATCH mpam mpam/snapshot/v6.14-rc1] arm64/mpam: Fix MBWU monitor overflow handling Zeng Heng
2025-10-22 16:17 ` Ben Horgan
2025-10-25 8:45 ` Zeng Heng
2025-10-25 9:34 ` [PATCH] arm64/mpam: Clean MBWU monitor overflow bit Zeng Heng
2025-10-28 17:37 ` Ben Horgan
2025-10-28 17:04 ` [PATCH mpam mpam/snapshot/v6.14-rc1] arm64/mpam: Fix MBWU monitor overflow handling Ben Horgan
2025-10-25 9:01 ` Zeng Heng
2025-10-28 16:01 ` Ben Horgan
2025-10-29 2:49 ` Zeng Heng
2025-10-29 3:59 ` Zeng Heng
2025-10-24 18:22 ` [PATCH v3 24/29] arm_mpam: Track bandwidth counter state for overflow and power management Jonathan Cameron
2025-10-29 7:56 ` [PATCH v2] arm64/mpam: Clean MBWU monitor overflow bit Zeng Heng
2025-10-30 9:52 ` Ben Horgan
2025-11-03 3:47 ` Zeng Heng
2025-11-04 10:24 ` Ben Horgan
2025-11-04 13:48 ` Zeng Heng
2025-10-17 18:56 ` [PATCH v3 25/29] arm_mpam: Probe for long/lwd mbwu counters James Morse
2025-10-22 11:23 ` Ben Horgan
2025-10-24 18:24 ` Jonathan Cameron
2025-10-17 18:56 ` [PATCH v3 26/29] arm_mpam: Use long MBWU counters if supported James Morse
2025-10-22 12:31 ` Ben Horgan
2025-10-24 18:29 ` Jonathan Cameron
2025-11-06 15:18 ` Peter Newman
2025-11-06 15:43 ` Ben Horgan
2025-11-06 16:15 ` Peter Newman
2025-11-06 16:41 ` Ben Horgan
2025-11-07 10:30 ` Peter Newman
2025-11-07 10:53 ` Ben Horgan
2025-10-17 18:56 ` [PATCH v3 27/29] arm_mpam: Add helper to reset saved mbwu state James Morse
2025-10-24 18:34 ` Jonathan Cameron
2025-10-29 7:14 ` Shaopeng Tan (Fujitsu)
2025-10-17 18:56 ` [PATCH v3 28/29] arm_mpam: Add kunit test for bitmap reset James Morse
2025-10-17 18:56 ` [PATCH v3 29/29] arm_mpam: Add kunit tests for props_mismatch() James Morse
2025-10-18 1:01 ` [PATCH v3 00/29] arm_mpam: Add basic mpam driver Fenghua Yu
2025-10-23 8:15 ` Shaopeng Tan (Fujitsu)
2025-11-05 9:39 ` Peter Newman
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