linux-kernel - Re: [PATCH v7 0/7] arm_pmu: Use NMI for perf interrupt

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Message-Id: <160131601790.1815118.3633273002766662278.b4-ty@kernel.org>
Date:   Mon, 28 Sep 2020 23:13:20 +0100
From:   Will Deacon <will@...nel.org>
To:     Alexandru Elisei <alexandru.elisei@....com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc:     catalin.marinas@....com, kernel-team@...roid.com,
        Will Deacon <will@...nel.org>, sumit.garg@...aro.org,
        swboyd@...omium.org, maz@...nel.org, mark.rutland@....com
Subject: Re: [PATCH v7 0/7] arm_pmu: Use NMI for perf interrupt

On Thu, 24 Sep 2020 12:06:59 +0100, Alexandru Elisei wrote:
> The series changes the arm_pmu driver to use NMIs for the perf interrupt
> when NMIs are available on the platform (currently, only arm64 + GICv3). To
> make it easier to play with the patches, I've pushed a branch at [1]:
> 
> $ git clone -b pmu-nmi-v7 git://linux-arm.org/linux-ae
> 
> The changes from v6 were minor, but I've still run the same tests on an
> espressobin v7*. These are the results of running perf record -a -- sleep
> 60 (all results show kernel symbols with overhead >= 1%):
> 
> [...]

Applied to will (for-next/perf), thanks!

[1/7] arm64: perf: Add missing ISB in armv8pmu_enable_counter()
      https://git.kernel.org/will/c/490d7b7c0845
[2/7] arm64: perf: Avoid PMXEV* indirection
      https://git.kernel.org/will/c/0fdf1bb75953
[3/7] arm64: perf: Remove PMU locking
      https://git.kernel.org/will/c/2a0e2a02e4b7
[4/7] arm64: perf: Defer irq_work to IPI_IRQ_WORK
      https://git.kernel.org/will/c/05ab72813340
[5/7] KVM: arm64: pmu: Make overflow handler NMI safe
      https://git.kernel.org/will/c/95e92e45a454
[6/7] arm_pmu: Introduce pmu_irq_ops
      https://git.kernel.org/will/c/f76b130bdb89
[7/7] arm_pmu: arm64: Use NMIs for PMU
      https://git.kernel.org/will/c/d8f6267f7ce5

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev