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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 , Waiman Long , 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: [PATCH 05/33] sched/isolation: Save boot defined domain flags Date: Mon, 13 Oct 2025 22:31:18 +0200 Message-ID: <20251013203146.10162-6-frederic@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251013203146.10162-1-frederic@kernel.org> References: <20251013203146.10162-1-frederic@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam01 X-Stat-Signature: wj1uooakp5cec5nbiin9fkjw77cixpuu X-Rspam-User: X-Rspamd-Queue-Id: 0B8B6A000B X-HE-Tag: 1760387557-1100 X-HE-Meta: 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 XrWasal6 Ig16tMZG096N2SI3fXygfWBtK9mXqd4fhXTlTbyrfrlliieZLyHy/iVE530uOTqymEXRPgwvyTP3vUSQKPTaMGXzy3I6BgU2AsiRU+NMVA49sU8Y84dPssPQcFUKErYh74roeh+lkXohx7/wKRsXAzh+Qk0nKxfLSqWCm4c/KXWsA9vwxdJ5DkJJiWpbm5vXbpcV3DbkvE9mD/614nVHiUaXV6HG5dDT60mR8qJdX+jo1N4yn+dqKVG1XUCx2nhQs0F2uFV0POWUFXV9u4lGegAAUhu5ih1ZfK/s9 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: 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 | 1 + kernel/sched/isolation.c | 5 +++-- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/include/linux/sched/isolation.h b/include/linux/sched/isolation.h index d8501f4709b5..da22b038942a 100644 --- a/include/linux/sched/isolation.h +++ b/include/linux/sched/isolation.h @@ -7,6 +7,7 @@ #include enum hk_type { + HK_TYPE_DOMAIN_BOOT, HK_TYPE_DOMAIN, HK_TYPE_MANAGED_IRQ, HK_TYPE_KERNEL_NOISE, diff --git a/kernel/sched/isolation.c b/kernel/sched/isolation.c index a4cf17b1fab0..8690fb705089 100644 --- a/kernel/sched/isolation.c +++ b/kernel/sched/isolation.c @@ -11,6 +11,7 @@ #include "sched.h" enum hk_flags { + HK_FLAG_DOMAIN_BOOT = BIT(HK_TYPE_DOMAIN_BOOT), HK_FLAG_DOMAIN = BIT(HK_TYPE_DOMAIN), HK_FLAG_MANAGED_IRQ = BIT(HK_TYPE_MANAGED_IRQ), HK_FLAG_KERNEL_NOISE = BIT(HK_TYPE_KERNEL_NOISE), @@ -216,7 +217,7 @@ static int __init housekeeping_isolcpus_setup(char *str) if (!strncmp(str, "domain,", 7)) { str += 7; - flags |= HK_FLAG_DOMAIN; + flags |= HK_FLAG_DOMAIN | HK_FLAG_DOMAIN_BOOT; continue; } @@ -246,7 +247,7 @@ static int __init housekeeping_isolcpus_setup(char *str) /* Default behaviour for isolcpus without flags */ if (!flags) - flags |= HK_FLAG_DOMAIN; + flags |= HK_FLAG_DOMAIN | HK_FLAG_DOMAIN_BOOT; return housekeeping_setup(str, flags); } -- 2.51.0