From: Alison Wang <alison.wang@nxp.com>
To: catalin.marinas@arm.com, will@kernel.org,
kurt.kanzenbach@linutronix.de, paulmck@kernel.org,
mw@semihalf.com, leoyang.li@nxp.com, vladimir.oltean@nxp.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Cc: alison.wang@nxp.com
Subject: [RFC PATCH] arm64: defconfig: Disable fine-grained task level IRQ time accounting
Date: Wed, 29 Jul 2020 11:39:34 +0800 [thread overview]
Message-ID: <20200729033934.22349-1-alison.wang@nxp.com> (raw)
In the current arm64 defconfig, CONFIG_IRQ_TIME_ACCOUNTING is enabled as
default. According to my tests on NXP's LayerScape and i.MX platforms,
the system hangs when running the command "stress-ng --hrtimers 1" with
CONFIG_IRQ_TIME_ACCOUNTING enabled. Disabling this option, the issue
disappears. CONFIG_IRQ_TIME_ACCOUNTING causes serious performance impact
when running hrtimer stress test at the same time.
Signed-off-by: Alison Wang <alison.wang@nxp.com>
---
arch/arm64/configs/defconfig | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index e0f33826819f..ff1c11d8b10b 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -4,7 +4,6 @@ CONFIG_AUDIT=y
CONFIG_NO_HZ_IDLE=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_PREEMPT=y
-CONFIG_IRQ_TIME_ACCOUNTING=y
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_BSD_PROCESS_ACCT_V3=y
CONFIG_TASK_XACCT=y
--
2.17.1
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next reply other threads:[~2020-07-29 3:48 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-29 3:39 Alison Wang [this message]
2020-07-29 8:40 ` [RFC PATCH] arm64: defconfig: Disable fine-grained task level IRQ time accounting Kurt Kanzenbach
2020-07-29 8:50 ` [EXT] " Alison Wang
2020-07-29 9:49 ` Vladimir Oltean
2020-07-30 7:23 ` Kurt Kanzenbach
2020-07-30 8:22 ` Vladimir Oltean
2020-08-03 8:04 ` Kurt Kanzenbach
2020-08-03 8:16 ` Vladimir Oltean
2020-08-03 9:51 ` Robin Murphy
2020-08-03 11:38 ` Vladimir Oltean
2020-08-03 11:48 ` Valentin Schneider
2020-08-03 13:24 ` Marc Zyngier
2020-08-03 10:02 ` Thomas Gleixner
2020-08-03 10:49 ` Thomas Gleixner
2020-08-03 11:41 ` Vladimir Oltean
2020-08-03 15:13 ` Thomas Gleixner
2020-08-03 15:47 ` Valentin Schneider
2020-08-03 16:14 ` Vladimir Oltean
2020-08-03 19:22 ` Thomas Gleixner
2020-08-03 23:59 ` Valentin Schneider
2020-08-05 8:50 ` Dietmar Eggemann
2020-08-05 13:40 ` peterz
2020-08-05 13:56 ` Valentin Schneider
2020-08-05 15:31 ` peterz
2020-08-06 9:41 ` Thomas Gleixner
2020-08-06 11:45 ` peterz
2020-08-06 13:27 ` Paul E. McKenney
2020-08-06 19:03 ` Thomas Gleixner
2020-08-06 20:39 ` Paul E. McKenney
2020-08-06 18:58 ` Thomas Gleixner
2020-08-06 9:34 ` Thomas Gleixner
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