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Miller" , Eric Dumazet , Gabriele Monaco , Greg Kroah-Hartman , Ingo Molnar , Jakub Kicinski , Jens Axboe , Johannes Weiner , Lai Jiangshan , Marco Crivellari , Michal Hocko , Muchun Song , Paolo Abeni , Peter Zijlstra , Phil Auld , "Rafael J . Wysocki" , Roman Gushchin , Shakeel Butt , Simon Horman , Tejun Heo , Thomas Gleixner , Vlastimil Babka , Will Deacon , cgroups@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-block@vger.kernel.org, linux-mm@kvack.org, linux-pci@vger.kernel.org, netdev@vger.kernel.org Subject: Re: [PATCH 05/33] sched/isolation: Save boot defined domain flags Message-ID: References: <20251224134520.33231-1-frederic@kernel.org> <20251224134520.33231-6-frederic@kernel.org> <04708b57-7ffe-4a97-925f-926d577061a6@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <04708b57-7ffe-4a97-925f-926d577061a6@redhat.com> X-Rspam-User: X-Rspamd-Queue-Id: 26556C0002 X-Rspamd-Server: rspam10 X-Stat-Signature: tqjtmeh9dp8d6xppuu8mhnbppx358ktc X-HE-Tag: 1767188733-379437 X-HE-Meta: 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 ktsz2pyf zM3LDrLEbBgbf4DuIFNYaHaVhJXUQcYzABpxUlSnK7prPjCv36+aE0bxOcSZqjcDdSxVXPeC0C90yVXObyXKX2KLTJsVZiNOgrv9nugFnC+KUI0ahc/8l4tBPGii+WP3yiIJFxuaK3XvLiN2Hs/TFbpAIr/krrAdHml7yfi6Sj2uTMNivwECROT08YqXI/DUR2jsM3hc0yGt5SxwI5uc+Nk3IjRGfLEJyTKK8tGRnqENXGxWLkjPYQ1v6ErADVqs4BUD0bycXWw/OXs3ynbNi2ybEEUqW3aU8Md2SCUxAPXoNBLeNwBdttdFWn2xwj4WVn9Da X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Le Thu, Dec 25, 2025 at 05:27:54PM -0500, Waiman Long a écrit : > On 12/24/25 8:44 AM, Frederic Weisbecker wrote: > > HK_TYPE_DOMAIN will soon integrate not only boot defined isolcpus= CPUs > > but also cpuset isolated partitions. > > > > Housekeeping still needs a way to record what was initially passed > > to isolcpus= in order to keep these CPUs isolated after a cpuset > > isolated partition is modified or destroyed while containing some of > > them. > > > > Create a new HK_TYPE_DOMAIN_BOOT to keep track of those. > > > > Signed-off-by: Frederic Weisbecker > > Reviewed-by: Phil Auld > > --- > > include/linux/sched/isolation.h | 4 ++++ > > kernel/sched/isolation.c | 5 +++-- > > 2 files changed, 7 insertions(+), 2 deletions(-) > > > > diff --git a/include/linux/sched/isolation.h b/include/linux/sched/isolation.h > > index d8501f4709b5..109a2149e21a 100644 > > --- a/include/linux/sched/isolation.h > > +++ b/include/linux/sched/isolation.h > > @@ -7,8 +7,12 @@ > > #include > > enum hk_type { > > + /* Revert of boot-time isolcpus= argument */ > > + HK_TYPE_DOMAIN_BOOT, > > HK_TYPE_DOMAIN, > > + /* Revert of boot-time isolcpus=managed_irq argument */ > > HK_TYPE_MANAGED_IRQ, > > + /* Revert of boot-time nohz_full= or isolcpus=nohz arguments */ > > HK_TYPE_KERNEL_NOISE, > > HK_TYPE_MAX, > > "Revert" is a verb. The term "Revert of" sound strange to me. I think using > "Inverse of" will sound better. Somehow I thought it could be a noun as well. At least I wouldn't mind if it ever turns that way. Fixing that, thanks. > > Cheers, > Longman > -- Frederic Weisbecker SUSE Labs