On 07/21/2016 07:52 AM, Eugeniy Paltsev wrote: > Enable the kernel to detect "hung tasks", > which are bugs that cause the task to be stuck in > uninterruptible "D" state indefinitiley. spellos above > 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. In some of the actual hang scenarios (on FPGA boards atleast) I was debugging, the hung task seemed redundant actually as I was getting RCU stall msgs as well. Do you not see something similar. > Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev at synopsys.com> > > Cc: Christian Ruppert <christian.ruppert at alitech.com> > Cc: Noam Camus <noamca at mellanox.com> > Cc: Vineet Gupta <vgupta at synopsys.com> > Cc: Alexey Brodkin <abrodkin at synopsys.com> > Cc: Zakharov Vlad <vzakhar at synopsys.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 >
