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Wed, 05 Jun 2024 08:44:52 -0700 (PDT) Date: Wed, 5 Jun 2024 08:44:50 -0700 In-Reply-To: <20240528003521.979836-1-ankur.a.arora@oracle.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240528003521.979836-1-ankur.a.arora@oracle.com> Message-ID: Subject: Re: [PATCH v2 00/35] PREEMPT_AUTO: support lazy rescheduling From: Sean Christopherson To: Ankur Arora Cc: linux-kernel@vger.kernel.org, tglx@linutronix.de, peterz@infradead.org, torvalds@linux-foundation.org, paulmck@kernel.org, rostedt@goodmis.org, mark.rutland@arm.com, juri.lelli@redhat.com, joel@joelfernandes.org, raghavendra.kt@amd.com, sshegde@linux.ibm.com, boris.ostrovsky@oracle.com, konrad.wilk@oracle.com Content-Type: text/plain; charset="us-ascii" On Mon, May 27, 2024, Ankur Arora wrote: > Patches 1,2 > "sched/core: Move preempt_model_*() helpers from sched.h to preempt.h" > "sched/core: Drop spinlocks on contention iff kernel is preemptible" > condition spin_needbreak() on the dynamic preempt_model_*(). ... > Not really required but a useful bugfix for PREEMPT_DYNAMIC and PREEMPT_AUTO. > Sean Christopherson (2): > sched/core: Move preempt_model_*() helpers from sched.h to preempt.h > sched/core: Drop spinlocks on contention iff kernel is preemptible Peter and/or Thomas, would it be possible to get these applied to tip-tree sooner than later? They fix a real bug that affects KVM to varying degrees.