linux-kernel - [PATCH] ARC: [*defconfigs] Enable hung tasks detection

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Date:	Thu, 21 Jul 2016 17:52:15 +0300
From:	Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>
To:	linux-snps-arc@...ts.infradead.org
Cc:	linux-kernel@...r.kernel.org,
	Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>,
	Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>,
	Christian Ruppert <christian.ruppert@...tech.com>,
	Noam Camus <noamca@...lanox.com>,
	Vineet Gupta <Vineet.Gupta1@...opsys.com>,
	Alexey Brodkin <Alexey.Brodkin@...opsys.com>,
	Zakharov Vlad <Vladislav.Zakharov@...opsys.com>
Subject: [PATCH] ARC: [*defconfigs] Enable hung tasks detection

Enable the kernel to detect "hung tasks",
which are bugs that cause the task to be stuck in
uninterruptible "D" state indefinitiley.
Note we're setting HUNG_TASK_TIMEOUT to 10 seconds instead of
default 120 to shorten time required for detection of hung task,
as it set in axs101, axs103 and axs103_smp boards defconfigs.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>

Cc: Christian Ruppert <christian.ruppert@...tech.com>
Cc: Noam Camus <noamca@...lanox.com>
Cc: Vineet Gupta <vgupta@...opsys.com>
Cc: Alexey Brodkin <abrodkin@...opsys.com>
Cc: Zakharov Vlad  <vzakhar@...opsys.com>
---
 arch/arc/configs/nps_defconfig             | 2 ++
 arch/arc/configs/nsim_700_defconfig        | 2 ++
 arch/arc/configs/nsim_hs_defconfig         | 2 ++
 arch/arc/configs/nsim_hs_smp_defconfig     | 2 ++
 arch/arc/configs/nsimosci_defconfig        | 2 ++
 arch/arc/configs/nsimosci_hs_defconfig     | 3 +++
 arch/arc/configs/nsimosci_hs_smp_defconfig | 3 +++
 arch/arc/configs/tb10x_defconfig           | 1 +
 8 files changed, 17 insertions(+)

diff --git a/arch/arc/configs/nps_defconfig b/arch/arc/configs/nps_defconfig
index ede625c..39ccacd 100644
--- a/arch/arc/configs/nps_defconfig
+++ b/arch/arc/configs/nps_defconfig
@@ -81,4 +81,6 @@ CONFIG_DEBUG_INFO=y
 # CONFIG_ENABLE_MUST_CHECK is not set
 CONFIG_MAGIC_SYSRQ=y
 CONFIG_DEBUG_MEMORY_INIT=y
+CONFIG_DETECT_HUNG_TASK=y
+CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=10
 CONFIG_ENABLE_DEFAULT_TRACERS=y
diff --git a/arch/arc/configs/nsim_700_defconfig b/arch/arc/configs/nsim_700_defconfig
index 7314f53..78c3070 100644
--- a/arch/arc/configs/nsim_700_defconfig
+++ b/arch/arc/configs/nsim_700_defconfig
@@ -61,4 +61,6 @@ CONFIG_TMPFS=y
 CONFIG_NFS_FS=y
 # CONFIG_ENABLE_WARN_DEPRECATED is not set
 # CONFIG_ENABLE_MUST_CHECK is not set
+CONFIG_DETECT_HUNG_TASK=y
+CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=10
 # CONFIG_DEBUG_PREEMPT is not set
diff --git a/arch/arc/configs/nsim_hs_defconfig b/arch/arc/configs/nsim_hs_defconfig
index a99dc7a..c6a0a30 100644
--- a/arch/arc/configs/nsim_hs_defconfig
+++ b/arch/arc/configs/nsim_hs_defconfig
@@ -59,4 +59,6 @@ CONFIG_TMPFS=y
 CONFIG_NFS_FS=y
 # CONFIG_ENABLE_WARN_DEPRECATED is not set
 # CONFIG_ENABLE_MUST_CHECK is not set
+CONFIG_DETECT_HUNG_TASK=y
+CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=10
 # CONFIG_DEBUG_PREEMPT is not set
diff --git a/arch/arc/configs/nsim_hs_smp_defconfig b/arch/arc/configs/nsim_hs_smp_defconfig
index 59f221f..10c5e5e 100644
--- a/arch/arc/configs/nsim_hs_smp_defconfig
+++ b/arch/arc/configs/nsim_hs_smp_defconfig
@@ -58,3 +58,5 @@ CONFIG_TMPFS=y
 CONFIG_NFS_FS=y
 # CONFIG_ENABLE_WARN_DEPRECATED is not set
 # CONFIG_ENABLE_MUST_CHECK is not set
+CONFIG_DETECT_HUNG_TASK=y
+CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=10
diff --git a/arch/arc/configs/nsimosci_defconfig b/arch/arc/configs/nsimosci_defconfig
index 42bafa5..973ce41 100644
--- a/arch/arc/configs/nsimosci_defconfig
+++ b/arch/arc/configs/nsimosci_defconfig
@@ -71,3 +71,5 @@ CONFIG_TMPFS=y
 CONFIG_NFS_FS=y
 # CONFIG_ENABLE_WARN_DEPRECATED is not set
 # CONFIG_ENABLE_MUST_CHECK is not set
+CONFIG_DETECT_HUNG_TASK=y
+CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=10
diff --git a/arch/arc/configs/nsimosci_hs_defconfig b/arch/arc/configs/nsimosci_hs_defconfig
index 4bb60c1..c0b99d7 100644
--- a/arch/arc/configs/nsimosci_hs_defconfig
+++ b/arch/arc/configs/nsimosci_hs_defconfig
@@ -70,3 +70,6 @@ CONFIG_TMPFS=y
 CONFIG_NFS_FS=y
 # CONFIG_ENABLE_WARN_DEPRECATED is not set
 # CONFIG_ENABLE_MUST_CHECK is not set
+CONFIG_DEBUG_KERNEL=y
+CONFIG_DETECT_HUNG_TASK=y
+CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=10
diff --git a/arch/arc/configs/nsimosci_hs_smp_defconfig b/arch/arc/configs/nsimosci_hs_smp_defconfig
index 7e88f4c..4012585 100644
--- a/arch/arc/configs/nsimosci_hs_smp_defconfig
+++ b/arch/arc/configs/nsimosci_hs_smp_defconfig
@@ -84,3 +84,6 @@ CONFIG_NFS_FS=y
 # CONFIG_ENABLE_WARN_DEPRECATED is not set
 # CONFIG_ENABLE_MUST_CHECK is not set
 CONFIG_FTRACE=y
+CONFIG_DEBUG_KERNEL=y
+CONFIG_DETECT_HUNG_TASK=y
+CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=10
diff --git a/arch/arc/configs/tb10x_defconfig b/arch/arc/configs/tb10x_defconfig
index 4c51183..e8a96eb 100644
--- a/arch/arc/configs/tb10x_defconfig
+++ b/arch/arc/configs/tb10x_defconfig
@@ -104,6 +104,7 @@ CONFIG_MAGIC_SYSRQ=y
 CONFIG_DEBUG_MEMORY_INIT=y
 CONFIG_DEBUG_STACKOVERFLOW=y
 CONFIG_DETECT_HUNG_TASK=y
+CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=10
 CONFIG_SCHEDSTATS=y
 CONFIG_TIMER_STATS=y
 # CONFIG_CRYPTO_HW is not set
-- 
2.5.5