From: Lecopzer Chen <lecopzer@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: mark.rutland@arm.com, lecopzer.chen@mediatek.com,
Lecopzer Chen <lecopzer@gmail.com>,
alexander.shishkin@linux.intel.com, catalin.marinas@arm.com,
jolsa@redhat.com, acme@kernel.org, peterz@infradead.org,
mingo@redhat.com, linux-mediatek@lists.infradead.org,
matthias.bgg@gmail.com, namhyung@kernel.org, will@kernel.org,
yj.chiang@mediatek.com, linux-arm-kernel@lists.infradead.org
Subject: [PATCH 0/3] arm64: perf: Add support for Perf NMI interrupts
Date: Sat, 16 May 2020 20:48:54 +0800 [thread overview]
Message-ID: <20200516124857.75004-1-lecopzer@gmail.com> (raw)
These series implement Perf NMI funxtionality and depends on
Pseudo NMI [1] which has been upstreamed.
In arm64 with GICv3, Pseudo NMI was implemented for NMI-like interruts.
That can be extended to Perf NMI which is the prerequisite for hard-lockup
detector which had already a standard interface inside Linux.
Thus the first step we need to implement perf NMI interface and make sure
it works fine.
Perf NMI has been test by dd if=/dev/urandom of=/dev/null like the link [2]
did.
[1] https://lkml.org/lkml/2019/1/31/535
[2] https://www.linaro.org/blog/debugging-arm-kernels-using-nmifiq
Lecopzer Chen (3):
arm_pmu: Add support for perf NMI interrupts registration
arm64: perf: Support NMI context for perf event ISR
arm64: Kconfig: Add support for the Perf NMI
arch/arm64/Kconfig | 10 +++++++
arch/arm64/kernel/perf_event.c | 36 ++++++++++++++++++------
drivers/perf/arm_pmu.c | 51 ++++++++++++++++++++++++++++++----
include/linux/perf/arm_pmu.h | 6 ++++
4 files changed, 88 insertions(+), 15 deletions(-)
--
2.25.1
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next reply other threads:[~2020-05-16 12:50 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-16 12:48 Lecopzer Chen [this message]
2020-05-16 12:48 ` [PATCH 1/3] arm_pmu: Add support for perf NMI interrupts registration Lecopzer Chen
2020-05-17 6:39 ` Lecopzer Chen
2020-05-16 12:48 ` [PATCH 2/3] arm64: perf: Support NMI context for perf event ISR Lecopzer Chen
2020-05-16 12:48 ` [PATCH 3/3] arm64: Kconfig: Add support for the Perf NMI Lecopzer Chen
2020-05-18 5:46 ` [PATCH 0/3] arm64: perf: Add support for Perf NMI interrupts Sumit Garg
2020-05-18 6:26 ` Lecopzer Chen
2020-05-18 10:45 ` Mark Rutland
2020-05-18 11:17 ` Alexandru Elisei
2020-05-18 14:09 ` Sumit Garg
2020-05-18 14:19 ` Mark Rutland
2020-05-19 6:48 ` Sumit Garg
2020-05-20 6:55 ` Song Bao Hua
2020-05-20 10:30 ` Alexandru Elisei
2020-05-21 3:00 ` Song Bao Hua (Barry Song)
2020-05-21 12:36 ` Alexandru Elisei
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