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From: Valentin Schneider <valentin.schneider@arm.com>
To: linux-kernel@vger.kernel.org, x86@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>,
	James Morse <James.Morse@arm.com>
Subject: [PATCH 0/2] x86/intel_rdt: task_work vs task_struct rmid/closid write race
Date: Wed, 18 Nov 2020 18:00:28 +0000	[thread overview]
Message-ID: <20201118180030.22764-1-valentin.schneider@arm.com> (raw)

Hi folks,

This is a small cleanup + a fix for a race I stumbled upon while staring at
resctrl stuff.

Briefly tested on a Xeon Gold 5120 (m2.xlarge.x86 on Equinix) by bouncing a few
tasks around control groups.

Cheers,
Valentin

Valentin Schneider (2):
  x86/intel_rdt: Check monitor group vs control group membership earlier
  x86/intel_rdt: Plug task_work vs task_struct {rmid,closid} update race

 arch/x86/include/asm/resctrl.h         | 11 ++--
 arch/x86/kernel/cpu/resctrl/rdtgroup.c | 71 ++++++++++++++++----------
 2 files changed, 50 insertions(+), 32 deletions(-)

--
2.27.0


             reply	other threads:[~2020-11-18 18:01 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-18 18:00 Valentin Schneider [this message]
2020-11-18 18:00 ` [PATCH 1/2] x86/intel_rdt: Check monitor group vs control group membership earlier Valentin Schneider
2020-11-20 14:53   ` James Morse
2020-11-20 15:53     ` Valentin Schneider
2020-11-18 18:00 ` [PATCH 2/2] x86/intel_rdt: Plug task_work vs task_struct {rmid,closid} update race Valentin Schneider
2020-11-20 14:53   ` James Morse
2020-11-20 15:54     ` Valentin Schneider

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