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 3/3] arm64: Kconfig: Add support for the Perf NMI
Date: Sat, 16 May 2020 20:48:57 +0800 [thread overview]
Message-ID: <20200516124857.75004-4-lecopzer@gmail.com> (raw)
In-Reply-To: <20200516124857.75004-1-lecopzer@gmail.com>
This is an extending function for Pseudo NMI that registering
Perf events interrupts as NMI.
It's helpful for sampling irq-off context when using perf.
Signed-off-by: Lecopzer Chen <lecopzer.chen@mediatek.com>
---
arch/arm64/Kconfig | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 40fb05d96c60..f89c169771a0 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1679,6 +1679,16 @@ config ARM64_PSEUDO_NMI
If unsure, say N
if ARM64_PSEUDO_NMI
+config ARM64_PSEUDO_NMI_PERF
+ bool "Register Perf interrupts as Pseudo NMI"
+ depends on HW_PERF_EVENTS
+ depends on ARM_PMU
+ select HAVE_PERF_EVENTS_NMI
+ help
+ This registers Perf interrupts to NMI when Pseudo NMI is active.
+ This option is helpful when you need to debug any context disabled
+ irq and get more inforamtion.
+
+ If unsure, say N
+
config ARM64_DEBUG_PRIORITY_MASKING
bool "Debug interrupt priority masking"
help
--
2.25.1
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next prev parent reply other threads:[~2020-05-16 12:51 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-16 12:48 [PATCH 0/3] arm64: perf: Add support for Perf NMI interrupts Lecopzer Chen
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 ` Lecopzer Chen [this message]
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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