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From: Jie Zhang <jzhang918@gmail.com>
To: linux-amlogic@lists.infradead.org
Subject: PMU support for Amlogic S905D3 in Linux kernel 5.6
Date: Tue, 2 Jun 2020 10:15:59 -0400	[thread overview]
Message-ID: <CACYR8yO2nLV21F2zp7-Z=uAt1H=FEJsHipfUk_U1pBFAN8H2YA@mail.gmail.com> (raw)

Hi,

I'm using Khadas VIM3L, which has an Amlogic S905D3, with Linux kernel
4.9. This Linux kernel has support for PMU for S905D3. But for a test
case I'm using I saw strange L1D cache misses behavior. I want to redo
the testing on a more recent kernel version, like 5.6. But it seems
Linux 5.6 does not have the support for PMU in that processor. Is
anyone working on this? From Amlogic specific changes to 4.9 kernel,
it seems we need special handling for this processor. Is there a
document describing how PMU works in this processor?

Thanks,
Jie

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             reply	other threads:[~2020-06-02 14:16 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-02 14:15 Jie Zhang [this message]
2020-06-02 14:28 ` Neil Armstrong

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