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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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WARNING: multiple messages have this Message-ID (diff)
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


             reply	other threads:[~2020-07-29  3:48 UTC|newest]

Thread overview: 62+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-29  3:39 Alison Wang [this message]
2020-07-29  3:39 ` [RFC PATCH] arm64: defconfig: Disable fine-grained task level IRQ time accounting Alison Wang
2020-07-29  8:40 ` Kurt Kanzenbach
2020-07-29  8:40   ` Kurt Kanzenbach
2020-07-29  8:50   ` [EXT] " Alison Wang
2020-07-29  8:50     ` Alison Wang
2020-07-29  9:49   ` Vladimir Oltean
2020-07-29  9:49     ` Vladimir Oltean
2020-07-30  7:23     ` Kurt Kanzenbach
2020-07-30  7:23       ` Kurt Kanzenbach
2020-07-30  8:22       ` Vladimir Oltean
2020-07-30  8:22         ` Vladimir Oltean
2020-08-03  8:04         ` Kurt Kanzenbach
2020-08-03  8:04           ` Kurt Kanzenbach
2020-08-03  8:16           ` Vladimir Oltean
2020-08-03  8:16             ` Vladimir Oltean
2020-08-03  9:51             ` Robin Murphy
2020-08-03  9:51               ` Robin Murphy
2020-08-03 11:38               ` Vladimir Oltean
2020-08-03 11:38                 ` Vladimir Oltean
2020-08-03 11:48                 ` Valentin Schneider
2020-08-03 11:48                   ` Valentin Schneider
2020-08-03 13:24                   ` Marc Zyngier
2020-08-03 13:24                     ` Marc Zyngier
2020-08-03 10:02             ` Thomas Gleixner
2020-08-03 10:02               ` Thomas Gleixner
2020-08-03 10:49           ` Thomas Gleixner
2020-08-03 10:49             ` Thomas Gleixner
2020-08-03 11:41             ` Vladimir Oltean
2020-08-03 11:41               ` Vladimir Oltean
2020-08-03 15:13               ` Thomas Gleixner
2020-08-03 15:13                 ` Thomas Gleixner
2020-08-03 15:47                 ` Valentin Schneider
2020-08-03 15:47                   ` Valentin Schneider
2020-08-03 16:14                   ` Vladimir Oltean
2020-08-03 16:14                     ` Vladimir Oltean
2020-08-03 19:22                   ` Thomas Gleixner
2020-08-03 19:22                     ` Thomas Gleixner
2020-08-03 23:59                     ` Valentin Schneider
2020-08-03 23:59                       ` Valentin Schneider
2020-08-05  8:50                       ` Dietmar Eggemann
2020-08-05  8:50                         ` Dietmar Eggemann
2020-08-05 13:40                     ` peterz
2020-08-05 13:40                       ` peterz
2020-08-05 13:56                       ` Valentin Schneider
2020-08-05 13:56                         ` Valentin Schneider
2020-08-05 15:31                         ` peterz
2020-08-05 15:31                           ` peterz
2020-08-06  9:41                           ` Thomas Gleixner
2020-08-06  9:41                             ` Thomas Gleixner
2020-08-06 11:45                             ` peterz
2020-08-06 11:45                               ` peterz
2020-08-06 13:27                               ` Paul E. McKenney
2020-08-06 13:27                                 ` Paul E. McKenney
2020-08-06 19:03                                 ` Thomas Gleixner
2020-08-06 19:03                                   ` Thomas Gleixner
2020-08-06 20:39                                   ` Paul E. McKenney
2020-08-06 20:39                                     ` Paul E. McKenney
2020-08-06 18:58                               ` Thomas Gleixner
2020-08-06 18:58                                 ` Thomas Gleixner
2020-08-06  9:34                       ` Thomas Gleixner
2020-08-06  9:34                         ` Thomas Gleixner

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