From mboxrd@z Thu Jan 1 00:00:00 1970 From: sudeep.holla@arm.com (Sudeep Holla) Date: Wed, 27 Jun 2018 10:31:12 +0100 Subject: [PATCH v2 0/7] arm64: numa/topology/smp: update the cpumasks for CPU hotplug In-Reply-To: <5B332228.40204@caviumnetworks.com> References: <1529327923-17911-1-git-send-email-sudeep.holla@arm.com> <5B332228.40204@caviumnetworks.com> Message-ID: <62111bfd-87a7-061b-9934-5c3bf2be9dbe@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 27/06/18 06:35, Ganapatrao Kulkarni wrote: > > Hi Sudeep, > > On 06/18/2018 06:48 PM, Sudeep Holla wrote: >> >> Hi, >> >> Commit 37c3ec2d810f ("arm64: topology: divorce MC scheduling domain >> from core_siblings") >> was reported to cause some hotplug and system suspend regressions when >> it was merged. On investigation, it was found that unlike x86/PPC, >> arm64 doesn't update the cpu and numa masks on CPU hotplug. That's >> somewhat expected from the scheduler. >> >> Since these changes were bit invasive as a solution to the above >> mentioned regression, as small change was temporarily applied as a fix. >> This series updates the cpu and numa masks on CPU hotplug and reverts >> that temporary fix. >> >> It would be good to get this tested(CPU hotplug - few and all CPUs in >> a socket) on multi-socket/NUMA systems from Cavium and Huawei/Hisilicon. > > testing looks ok on Cavium's ThunderX2 system. > please feel free to add, > > Tested-by: Ganapatrao Kulkarni > Thanks Ganapat. -- Regards, Sudeep