From: sashiko-bot@kernel.org
To: "Colton Lewis" <coltonlewis@google.com>
Cc: "Oliver Upton" <oupton@kernel.org>,
"Marc Zyngier" <maz@kernel.org>,
kvm@vger.kernel.org, kvmarm@lists.linux.dev,
linux-perf-users@vger.kernel.org
Subject: Re: [PATCH v9 14/22] perf: Add perf_pmu_resched_update()
Date: Thu, 24 Sep 2026 17:46:36 +0000 [thread overview]
Message-ID: <20260924174637.6A8EB1F000FF@smtp.kernel.org> (raw)
In-Reply-To: <20260924172928.2110956-15-coltonlewis@google.com>
> To modify PMU guest counter reservations dynamically, the per-CPU
> available counter mask must be updated while host perf events are
> temporarily scheduled out.
>
> Introduce perf_pmu_resched_update() to update PMU state while holding
> cpuctx->ctx.lock in between scheduling perf events out and scheduling
> them back in. It accepts a callback invoked between ctx_sched_out() and
> perf_event_sched_in(), accomplishing atomic counter mask updates with
> minimal perf API expansion.
>
> Refactor ctx_resched() into __ctx_resched() to invoke the callback at
> the appropriate point.
>
> Signed-off-by: Colton Lewis <coltonlewis@google.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20260924172928.2110956-1-coltonlewis@google.com?part=14
next prev parent reply other threads:[~2026-09-24 17:46 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-24 17:29 [PATCH v9 00/22] ARM64 PMU Partitioning Colton Lewis
2026-09-24 17:29 ` [PATCH v9 01/22] arm64: cpufeature: Add cpucap for HPMN0 Colton Lewis
2026-09-24 17:45 ` sashiko-bot
2026-09-24 17:29 ` [PATCH v9 02/22] KVM: arm64: Reorganize PMU includes Colton Lewis
2026-09-24 17:38 ` sashiko-bot
2026-09-24 17:29 ` [PATCH v9 03/22] KVM: arm64: Reorganize PMU functions Colton Lewis
2026-09-24 17:49 ` sashiko-bot
2026-09-24 17:29 ` [PATCH v9 04/22] perf: arm_pmuv3: Generalize counter bitmasks Colton Lewis
2026-09-24 17:37 ` sashiko-bot
2026-09-24 17:29 ` [PATCH v9 05/22] perf: arm_pmuv3: Move counter allocation mask to per-CPU struct pmu_hw_events Colton Lewis
2026-09-24 17:44 ` sashiko-bot
2026-09-24 17:29 ` [PATCH v9 06/22] perf: arm_pmuv3: Check cntr_mask before using pmccntr Colton Lewis
2026-09-24 17:38 ` sashiko-bot
2026-09-24 17:29 ` [PATCH v9 07/22] perf: arm_pmuv3: Allocate counter indices from high to low Colton Lewis
2026-09-24 17:37 ` sashiko-bot
2026-09-24 17:29 ` [PATCH v9 08/22] KVM: arm64: Add initial scaffolding for Partitioned PMU Colton Lewis
2026-09-24 17:44 ` sashiko-bot
2026-09-24 17:29 ` [PATCH v9 09/22] KVM: arm64: Set up FGT " Colton Lewis
2026-09-24 17:52 ` sashiko-bot
2026-09-24 17:29 ` [PATCH v9 10/22] KVM: arm64: Add Partitioned PMU register trap handlers Colton Lewis
2026-09-24 17:50 ` sashiko-bot
2026-09-24 17:29 ` [PATCH v9 11/22] KVM: arm64: Set up MDCR_EL2 to handle a Partitioned PMU Colton Lewis
2026-09-24 17:53 ` sashiko-bot
2026-09-24 17:29 ` [PATCH v9 12/22] KVM: arm64: Context swap Partitioned PMU guest registers Colton Lewis
2026-09-24 17:55 ` sashiko-bot
2026-09-24 17:29 ` [PATCH v9 13/22] KVM: arm64: Enforce PMU event filter at vcpu_load() Colton Lewis
2026-09-24 17:47 ` sashiko-bot
2026-09-24 17:29 ` [PATCH v9 14/22] perf: Add perf_pmu_resched_update() Colton Lewis
2026-09-24 17:46 ` sashiko-bot [this message]
2026-09-24 17:29 ` [PATCH v9 15/22] KVM: arm64: Allow kvm_vcpu_pmu_resync_el0() to resync filters in process context Colton Lewis
2026-09-24 17:51 ` sashiko-bot
2026-09-24 17:29 ` [PATCH v9 16/22] KVM: arm64: Apply dynamic guest counter reservations Colton Lewis
2026-09-24 17:57 ` sashiko-bot
2026-09-30 15:28 ` James Clark
2026-10-01 21:33 ` Colton Lewis
2026-09-24 17:29 ` [PATCH v9 17/22] KVM: arm64: Implement lazy PMU context swaps Colton Lewis
2026-09-24 17:55 ` sashiko-bot
2026-09-24 17:29 ` [PATCH v9 18/22] perf: arm_pmuv3: Handle IRQs for Partitioned PMU guest counters Colton Lewis
2026-09-24 18:03 ` sashiko-bot
2026-09-24 17:29 ` [PATCH v9 19/22] KVM: arm64: Detect overflows for the Partitioned PMU Colton Lewis
2026-09-24 18:07 ` sashiko-bot
2026-09-24 17:29 ` [PATCH v9 20/22] KVM: arm64: Add vCPU device attr to partition the PMU Colton Lewis
2026-09-24 17:56 ` sashiko-bot
2026-09-30 15:27 ` James Clark
2026-10-01 21:21 ` Colton Lewis
2026-09-24 17:29 ` [PATCH v9 21/22] KVM: selftests: Add find_bit to KVM library Colton Lewis
2026-09-24 17:52 ` sashiko-bot
2026-09-24 17:29 ` [PATCH v9 22/22] KVM: arm64: selftests: Add test case for Partitioned PMU Colton Lewis
2026-09-24 17:55 ` sashiko-bot
2026-09-24 17:30 ` [PATCH] target/arm: Enable KVM PMU partitioning and counter limit Colton Lewis
2026-09-28 14:01 ` Peter Maydell
2026-09-29 21:21 ` Colton Lewis
2026-09-30 11:35 ` Peter Maydell
2026-10-01 21:34 ` Colton Lewis
2026-09-30 15:25 ` [PATCH v9 00/22] ARM64 PMU Partitioning James Clark
2026-10-01 21:33 ` Colton Lewis
2026-09-30 15:26 ` James Clark
2026-10-01 21:33 ` Colton Lewis
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