[PATCH V3] Disable transparent hugepages in second kernel

[Li Wang]

Transparent hugepages are on by default. Disable it in kdump kernel by
adding the parameter 'transparent_hugepage=never'. This might help us
with some of the memory issues we are facing.

> From my test on two arch, not only there are no any bad effect on
> saving vmcore 
after turn off THP, but also we can get more 'MemAvailable:'
in the kdump kernel.

1)x86_64
without the parameter
=====================
kdump:/# cat /proc/cmdline
BOOT_IMAGE=/vmlinuz-3.10.0-229.el7.x86_64 root=/dev/mapper/rhel_ibm--x3250m4--01-root ro
rd.lvm.lv=rhel_ibm-x3250m4-01/swap console=ttyS0,115200n8
rd.lvm.lv=rhel_ibm-x3250m4-01/root LANG=en_US.UTF-8 irqpoll nr_cpus=1 reset_devices
cgroup_disable=memory mce=off numa=off udev.children-max=2 panic=10 rootflags=nofail
acpi_no_memhotplug disable_cpu_apicid=0 elfcorehdr=869764K

kdump:/# cat /proc/meminfo
MemTotal:         145492 kB
MemFree:           68284 kB
MemAvailable:     111632 kB  <<------
Buffers:              36 kB
Cached:            48184 kB
...

added the parameter
=====================
kdump:/# cat /proc/cmdline
BOOT_IMAGE=/vmlinuz-3.10.0-229.el7.x86_64 root=/dev/mapper/rhel_ibm--x3250m4--01-root ro
rd.lvm.lv=rhel_ibm-x3250m4-01/swap console=ttyS0,115200n8
rd.lvm.lv=rhel_ibm-x3250m4-01/root LANG=en_US.UTF-8 irqpoll nr_cpus=1 reset_devices
cgroup_disable=memory mce=off numa=off udev.children-max=2 panic=10 rootflags=nofail
acpi_no_memhotplug transparent_hugepage=never disable_cpu_apicid=0 elfcorehdr=869764K

kdump:/# cat /proc/meminfo
MemTotal:         145492 kB
MemFree:           68388 kB
MemAvailable:     111728 kB  <<-------
...
VmallocChunk:   34359659520 kB
HardwareCorrupted:     0 kB
AnonHugePages:         0 kB
...

2)ppc64
without the parameter
====================
kdump:/# cat /proc/cmdline
BOOT_IMAGE=/vmlinuz-3.10.0-229.el7.ppc64 root=/dev/mapper/rhel_ibm--p8--05--lp6-root ro
rd.lvm.lv=rhel_ibm-p8-05-lp6/root rd.lvm.lv=rhel_ibm-p8-05-lp6/swap LANG=en_US.UTF-8
irqpoll maxcpus=1 noirqdistrib reset_devices cgroup_disable=memory numa=off
udev.children-max=2 ehea.use_mcs=0 panic=10 rootflags=nofail kvm_cma_resv_ratio=0
elfcorehdr=154880K

kdump:/# cat /proc/meminfo
MemTotal:         480832 kB
MemFree:          293952 kB
MemAvailable:     427840 kB  <<--------
mallocUsed:       23680 kB
VmallocChunk:   8589901824 kB
HardwareCorrupted:     0 kB
AnonHugePages:         0 kB
...

added the parameter
===================
kdump:/# cat /proc/cmdline
BOOT_IMAGE=/vmlinuz-3.10.0-229.el7.ppc64 root=/dev/mapper/rhel_ibm--p8--05--lp6-root ro
rd.lvm.lv=rhel_ibm-p8-05-lp6/root rd.lvm.lv=rhel_ibm-p8-05-lp6/swap LANG=en_US.UTF-8
irqpoll maxcpus=1 noirqdistrib reset_devices cgroup_disable=memory numa=off
udev.children-max=2 ehea.use_mcs=0 panic=10 rootflags=nofail kvm_cma_resv_ratio=0
transparent_hugepage=never elfcorehdr=154880K

kdump:/# cat /proc/meminfo
MemTotal:         480832 kB
MemFree:          294592 kB
MemAvailable:     428480 kB  <<-------
...
HugePages_Total:       0

Signed-off-by: Li Wang <liwang(a)redhat.com&gt;
---
 kdump.sysconfig.i386    | 2 +-
 kdump.sysconfig.ppc64   | 2 +-
 kdump.sysconfig.ppc64le | 2 +-
 kdump.sysconfig.s390x   | 2 +-
 kdump.sysconfig.x86_64  | 2 +-
 5 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/kdump.sysconfig.i386 b/kdump.sysconfig.i386
index 84b2447..bb7a6e5 100644
--- a/kdump.sysconfig.i386
+++ b/kdump.sysconfig.i386
@@ -16,7 +16,7 @@ KDUMP_COMMANDLINE=""
 
 # This variable lets us append arguments to the current kdump commandline
 # As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline
-KDUMP_COMMANDLINE_APPEND="irqpoll nr_cpus=1 reset_devices numa=off
udev.children-max=2 panic=10 rootflags=nofail"
+KDUMP_COMMANDLINE_APPEND="irqpoll nr_cpus=1 reset_devices numa=off
udev.children-max=2 panic=10 rootflags=nofail transparent_hugepage=never"
 
 # Any additional kexec arguments required.  In most situations, this should
 # be left empty
diff --git a/kdump.sysconfig.ppc64 b/kdump.sysconfig.ppc64
index 5295626..dd09598 100644
--- a/kdump.sysconfig.ppc64
+++ b/kdump.sysconfig.ppc64
@@ -16,7 +16,7 @@ KDUMP_COMMANDLINE=""
 
 # This variable lets us append arguments to the current kdump commandline
 # As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline
-KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 noirqdistrib reset_devices
cgroup_disable=memory numa=off udev.children-max=2 ehea.use_mcs=0 panic=10
rootflags=nofail kvm_cma_resv_ratio=0"
+KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 noirqdistrib reset_devices
cgroup_disable=memory numa=off udev.children-max=2 ehea.use_mcs=0 panic=10
rootflags=nofail kvm_cma_resv_ratio=0 transparent_hugepage=never"
 
 # Any additional kexec arguments required.  In most situations, this should
 # be left empty
diff --git a/kdump.sysconfig.ppc64le b/kdump.sysconfig.ppc64le
index 5295626..dd09598 100644
--- a/kdump.sysconfig.ppc64le
+++ b/kdump.sysconfig.ppc64le
@@ -16,7 +16,7 @@ KDUMP_COMMANDLINE=""
 
 # This variable lets us append arguments to the current kdump commandline
 # As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline
-KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 noirqdistrib reset_devices
cgroup_disable=memory numa=off udev.children-max=2 ehea.use_mcs=0 panic=10
rootflags=nofail kvm_cma_resv_ratio=0"
+KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 noirqdistrib reset_devices
cgroup_disable=memory numa=off udev.children-max=2 ehea.use_mcs=0 panic=10
rootflags=nofail kvm_cma_resv_ratio=0 transparent_hugepage=never"
 
 # Any additional kexec arguments required.  In most situations, this should
 # be left empty
diff --git a/kdump.sysconfig.s390x b/kdump.sysconfig.s390x
index 745dd27..b103a88 100644
--- a/kdump.sysconfig.s390x
+++ b/kdump.sysconfig.s390x
@@ -16,7 +16,7 @@ KDUMP_COMMANDLINE=""
 
 # This variable lets us append arguments to the current kdump commandline
 # As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline
-KDUMP_COMMANDLINE_APPEND="nr_cpus=1 cgroup_disable=memory numa=off
udev.children-max=2 panic=10 rootflags=nofail"
+KDUMP_COMMANDLINE_APPEND="nr_cpus=1 cgroup_disable=memory numa=off
udev.children-max=2 panic=10 rootflags=nofail transparent_hugepage=never"
 
 # Any additional /sbin/mkdumprd arguments required.
 MKDUMPRD_ARGS=""
diff --git a/kdump.sysconfig.x86_64 b/kdump.sysconfig.x86_64
index d9ad9b5..7991d68 100644
--- a/kdump.sysconfig.x86_64
+++ b/kdump.sysconfig.x86_64
@@ -16,7 +16,7 @@ KDUMP_COMMANDLINE=""
 
 # This variable lets us append arguments to the current kdump commandline
 # As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline
-KDUMP_COMMANDLINE_APPEND="irqpoll nr_cpus=1 reset_devices cgroup_disable=memory
mce=off numa=off udev.children-max=2 panic=10 rootflags=nofail acpi_no_memhotplug"
+KDUMP_COMMANDLINE_APPEND="irqpoll nr_cpus=1 reset_devices cgroup_disable=memory
mce=off numa=off udev.children-max=2 panic=10 rootflags=nofail acpi_no_memhotplug
transparent_hugepage=never"
 
 # Any additional kexec arguments required.  In most situations, this should
 # be left empty
-- 
1.8.3.1

[Minfei Huang]

It looks good for me.

Thank you for your efferts.

Acked-by: Minfei Huang <mhuang(a)redhat.com&gt;

Thanks
Minfei

On 05/20/15 at 11:33am, Li Wang wrote:
>  Transparent hugepages are on by default. Disable it in kdump kernel
> by
>  adding the parameter 'transparent_hugepage=never'. This might help us
>  with some of the memory issues we are facing.
>  
>  From my test on two arch, not only there are no any bad effect on saving vmcore
>  after turn off THP, but also we can get more 'MemAvailable:' in the kdump
> kernel.
>  
>  1)x86_64
>  without the parameter
>  =====================
>  kdump:/# cat /proc/cmdline
>  BOOT_IMAGE=/vmlinuz-3.10.0-229.el7.x86_64 root=/dev/mapper/rhel_ibm--x3250m4--01-root ro
> rd.lvm.lv=rhel_ibm-x3250m4-01/swap console=ttyS0,115200n8
> rd.lvm.lv=rhel_ibm-x3250m4-01/root LANG=en_US.UTF-8 irqpoll nr_cpus=1 reset_devices
> cgroup_disable=memory mce=off numa=off udev.children-max=2 panic=10 rootflags=nofail
> acpi_no_memhotplug disable_cpu_apicid=0 elfcorehdr=869764K
>  
>  kdump:/# cat /proc/meminfo
>  MemTotal:         145492 kB
>  MemFree:           68284 kB
>  MemAvailable:     111632 kB  <<------
>  Buffers:              36 kB
>  Cached:            48184 kB
>  ...
>  
>  added the parameter
>  =====================
>  kdump:/# cat /proc/cmdline
>  BOOT_IMAGE=/vmlinuz-3.10.0-229.el7.x86_64 root=/dev/mapper/rhel_ibm--x3250m4--01-root ro
> rd.lvm.lv=rhel_ibm-x3250m4-01/swap console=ttyS0,115200n8
> rd.lvm.lv=rhel_ibm-x3250m4-01/root LANG=en_US.UTF-8 irqpoll nr_cpus=1 reset_devices
> cgroup_disable=memory mce=off numa=off udev.children-max=2 panic=10 rootflags=nofail
> acpi_no_memhotplug transparent_hugepage=never disable_cpu_apicid=0 elfcorehdr=869764K
>  
>  kdump:/# cat /proc/meminfo
>  MemTotal:         145492 kB
>  MemFree:           68388 kB
>  MemAvailable:     111728 kB  <<-------
>  ...
>  VmallocChunk:   34359659520 kB
>  HardwareCorrupted:     0 kB
>  AnonHugePages:         0 kB
>  ...
>  
>  2)ppc64
>  without the parameter
>  ====================
>  kdump:/# cat /proc/cmdline
>  BOOT_IMAGE=/vmlinuz-3.10.0-229.el7.ppc64 root=/dev/mapper/rhel_ibm--p8--05--lp6-root ro
> rd.lvm.lv=rhel_ibm-p8-05-lp6/root rd.lvm.lv=rhel_ibm-p8-05-lp6/swap LANG=en_US.UTF-8
> irqpoll maxcpus=1 noirqdistrib reset_devices cgroup_disable=memory numa=off
> udev.children-max=2 ehea.use_mcs=0 panic=10 rootflags=nofail kvm_cma_resv_ratio=0
> elfcorehdr=154880K
>  
>  kdump:/# cat /proc/meminfo
>  MemTotal:         480832 kB
>  MemFree:          293952 kB
>  MemAvailable:     427840 kB  <<--------
>  mallocUsed:       23680 kB
>  VmallocChunk:   8589901824 kB
>  HardwareCorrupted:     0 kB
>  AnonHugePages:         0 kB
>  ...
>  
>  added the parameter
>  ===================
>  kdump:/# cat /proc/cmdline
>  BOOT_IMAGE=/vmlinuz-3.10.0-229.el7.ppc64 root=/dev/mapper/rhel_ibm--p8--05--lp6-root ro
> rd.lvm.lv=rhel_ibm-p8-05-lp6/root rd.lvm.lv=rhel_ibm-p8-05-lp6/swap LANG=en_US.UTF-8
> irqpoll maxcpus=1 noirqdistrib reset_devices cgroup_disable=memory numa=off
> udev.children-max=2 ehea.use_mcs=0 panic=10 rootflags=nofail kvm_cma_resv_ratio=0
> transparent_hugepage=never elfcorehdr=154880K
>  
>  kdump:/# cat /proc/meminfo
>  MemTotal:         480832 kB
>  MemFree:          294592 kB
>  MemAvailable:     428480 kB  <<-------
>  ...
>  HugePages_Total:       0
>  
>  Signed-off-by: Li Wang <liwang(a)redhat.com&gt;
>  ---
>   kdump.sysconfig.i386    | 2 +-
>   kdump.sysconfig.ppc64   | 2 +-
>   kdump.sysconfig.ppc64le | 2 +-
>   kdump.sysconfig.s390x   | 2 +-
>   kdump.sysconfig.x86_64  | 2 +-
>   5 files changed, 5 insertions(+), 5 deletions(-)
>  
>  diff --git a/kdump.sysconfig.i386 b/kdump.sysconfig.i386
>  index 84b2447..bb7a6e5 100644
>  --- a/kdump.sysconfig.i386
>  +++ b/kdump.sysconfig.i386
>  @@ -16,7 +16,7 @@ KDUMP_COMMANDLINE=""
>   
>   # This variable lets us append arguments to the current kdump commandline
>   # As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline
>  -KDUMP_COMMANDLINE_APPEND="irqpoll nr_cpus=1 reset_devices numa=off
> udev.children-max=2 panic=10 rootflags=nofail"
>  +KDUMP_COMMANDLINE_APPEND="irqpoll nr_cpus=1 reset_devices numa=off
> udev.children-max=2 panic=10 rootflags=nofail transparent_hugepage=never"
>   
>   # Any additional kexec arguments required.  In most situations, this should
>   # be left empty
>  diff --git a/kdump.sysconfig.ppc64 b/kdump.sysconfig.ppc64
>  index 5295626..dd09598 100644
>  --- a/kdump.sysconfig.ppc64
>  +++ b/kdump.sysconfig.ppc64
>  @@ -16,7 +16,7 @@ KDUMP_COMMANDLINE=""
>   
>   # This variable lets us append arguments to the current kdump commandline
>   # As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline
>  -KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 noirqdistrib reset_devices
> cgroup_disable=memory numa=off udev.children-max=2 ehea.use_mcs=0 panic=10
> rootflags=nofail kvm_cma_resv_ratio=0"
>  +KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 noirqdistrib reset_devices
> cgroup_disable=memory numa=off udev.children-max=2 ehea.use_mcs=0 panic=10
> rootflags=nofail kvm_cma_resv_ratio=0 transparent_hugepage=never"
>   
>   # Any additional kexec arguments required.  In most situations, this should
>   # be left empty
>  diff --git a/kdump.sysconfig.ppc64le b/kdump.sysconfig.ppc64le
>  index 5295626..dd09598 100644
>  --- a/kdump.sysconfig.ppc64le
>  +++ b/kdump.sysconfig.ppc64le
>  @@ -16,7 +16,7 @@ KDUMP_COMMANDLINE=""
>   
>   # This variable lets us append arguments to the current kdump commandline
>   # As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline
>  -KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 noirqdistrib reset_devices
> cgroup_disable=memory numa=off udev.children-max=2 ehea.use_mcs=0 panic=10
> rootflags=nofail kvm_cma_resv_ratio=0"
>  +KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 noirqdistrib reset_devices
> cgroup_disable=memory numa=off udev.children-max=2 ehea.use_mcs=0 panic=10
> rootflags=nofail kvm_cma_resv_ratio=0 transparent_hugepage=never"
>   
>   # Any additional kexec arguments required.  In most situations, this should
>   # be left empty
>  diff --git a/kdump.sysconfig.s390x b/kdump.sysconfig.s390x
>  index 745dd27..b103a88 100644
>  --- a/kdump.sysconfig.s390x
>  +++ b/kdump.sysconfig.s390x
>  @@ -16,7 +16,7 @@ KDUMP_COMMANDLINE=""
>   
>   # This variable lets us append arguments to the current kdump commandline
>   # As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline
>  -KDUMP_COMMANDLINE_APPEND="nr_cpus=1 cgroup_disable=memory numa=off
> udev.children-max=2 panic=10 rootflags=nofail"
>  +KDUMP_COMMANDLINE_APPEND="nr_cpus=1 cgroup_disable=memory numa=off
> udev.children-max=2 panic=10 rootflags=nofail transparent_hugepage=never"
>   
>   # Any additional /sbin/mkdumprd arguments required.
>   MKDUMPRD_ARGS=""
>  diff --git a/kdump.sysconfig.x86_64 b/kdump.sysconfig.x86_64
>  index d9ad9b5..7991d68 100644
>  --- a/kdump.sysconfig.x86_64
>  +++ b/kdump.sysconfig.x86_64
>  @@ -16,7 +16,7 @@ KDUMP_COMMANDLINE=""
>   
>   # This variable lets us append arguments to the current kdump commandline
>   # As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline
>  -KDUMP_COMMANDLINE_APPEND="irqpoll nr_cpus=1 reset_devices cgroup_disable=memory
> mce=off numa=off udev.children-max=2 panic=10 rootflags=nofail acpi_no_memhotplug"
>  +KDUMP_COMMANDLINE_APPEND="irqpoll nr_cpus=1 reset_devices cgroup_disable=memory
> mce=off numa=off udev.children-max=2 panic=10 rootflags=nofail acpi_no_memhotplug
> transparent_hugepage=never"
>   
>   # Any additional kexec arguments required.  In most situations, this should
>   # be left empty
>  -- 
>  1.8.3.1
>  
>  _______________________________________________
>  kexec mailing list
>  kexec(a)lists.fedoraproject.org
>  https://lists.fedoraproject.org/mailman/listinfo/kexec

[Baoquan He]

On 05/20/15 at 11:33am, Li Wang wrote:
>  Transparent hugepages are on by default. Disable it in kdump kernel
> by
>  adding the parameter 'transparent_hugepage=never'. This might help us
>  with some of the memory issues we are facing.
>  
>  From my test on two arch, not only there are no any bad effect on saving vmcore
>  after turn off THP, but also we can get more 'MemAvailable:' in the kdump kernel.
It's great, Li Wang.

Ack it.

Acked-by: Baoquan He <bhe(a)redaht.com&gt;

Thanks
Baoquan

>  
>  1)x86_64
>  without the parameter
>  =====================
>  kdump:/# cat /proc/cmdline
>  BOOT_IMAGE=/vmlinuz-3.10.0-229.el7.x86_64 root=/dev/mapper/rhel_ibm--x3250m4--01-root ro
> rd.lvm.lv=rhel_ibm-x3250m4-01/swap console=ttyS0,115200n8
> rd.lvm.lv=rhel_ibm-x3250m4-01/root LANG=en_US.UTF-8 irqpoll nr_cpus=1 reset_devices
> cgroup_disable=memory mce=off numa=off udev.children-max=2 panic=10 rootflags=nofail
> acpi_no_memhotplug disable_cpu_apicid=0 elfcorehdr=869764K
>  
>  kdump:/# cat /proc/meminfo
>  MemTotal:         145492 kB
>  MemFree:           68284 kB
>  MemAvailable:     111632 kB  <<------
>  Buffers:              36 kB
>  Cached:            48184 kB
>  ...
>  
>  added the parameter
>  =====================
>  kdump:/# cat /proc/cmdline
>  BOOT_IMAGE=/vmlinuz-3.10.0-229.el7.x86_64 root=/dev/mapper/rhel_ibm--x3250m4--01-root ro
> rd.lvm.lv=rhel_ibm-x3250m4-01/swap console=ttyS0,115200n8
> rd.lvm.lv=rhel_ibm-x3250m4-01/root LANG=en_US.UTF-8 irqpoll nr_cpus=1 reset_devices
> cgroup_disable=memory mce=off numa=off udev.children-max=2 panic=10 rootflags=nofail
> acpi_no_memhotplug transparent_hugepage=never disable_cpu_apicid=0 elfcorehdr=869764K
>  
>  kdump:/# cat /proc/meminfo
>  MemTotal:         145492 kB
>  MemFree:           68388 kB
>  MemAvailable:     111728 kB  <<-------
>  ...
>  VmallocChunk:   34359659520 kB
>  HardwareCorrupted:     0 kB
>  AnonHugePages:         0 kB
>  ...
>  
>  2)ppc64
>  without the parameter
>  ====================
>  kdump:/# cat /proc/cmdline
>  BOOT_IMAGE=/vmlinuz-3.10.0-229.el7.ppc64 root=/dev/mapper/rhel_ibm--p8--05--lp6-root ro
> rd.lvm.lv=rhel_ibm-p8-05-lp6/root rd.lvm.lv=rhel_ibm-p8-05-lp6/swap LANG=en_US.UTF-8
> irqpoll maxcpus=1 noirqdistrib reset_devices cgroup_disable=memory numa=off
> udev.children-max=2 ehea.use_mcs=0 panic=10 rootflags=nofail kvm_cma_resv_ratio=0
> elfcorehdr=154880K
>  
>  kdump:/# cat /proc/meminfo
>  MemTotal:         480832 kB
>  MemFree:          293952 kB
>  MemAvailable:     427840 kB  <<--------
>  mallocUsed:       23680 kB
>  VmallocChunk:   8589901824 kB
>  HardwareCorrupted:     0 kB
>  AnonHugePages:         0 kB
>  ...
>  
>  added the parameter
>  ===================
>  kdump:/# cat /proc/cmdline
>  BOOT_IMAGE=/vmlinuz-3.10.0-229.el7.ppc64 root=/dev/mapper/rhel_ibm--p8--05--lp6-root ro
> rd.lvm.lv=rhel_ibm-p8-05-lp6/root rd.lvm.lv=rhel_ibm-p8-05-lp6/swap LANG=en_US.UTF-8
> irqpoll maxcpus=1 noirqdistrib reset_devices cgroup_disable=memory numa=off
> udev.children-max=2 ehea.use_mcs=0 panic=10 rootflags=nofail kvm_cma_resv_ratio=0
> transparent_hugepage=never elfcorehdr=154880K
>  
>  kdump:/# cat /proc/meminfo
>  MemTotal:         480832 kB
>  MemFree:          294592 kB
>  MemAvailable:     428480 kB  <<-------
>  ...
>  HugePages_Total:       0
>  
>  Signed-off-by: Li Wang <liwang(a)redhat.com&gt;
>  ---
>   kdump.sysconfig.i386    | 2 +-
>   kdump.sysconfig.ppc64   | 2 +-
>   kdump.sysconfig.ppc64le | 2 +-
>   kdump.sysconfig.s390x   | 2 +-
>   kdump.sysconfig.x86_64  | 2 +-
>   5 files changed, 5 insertions(+), 5 deletions(-)
>  
>  diff --git a/kdump.sysconfig.i386 b/kdump.sysconfig.i386
>  index 84b2447..bb7a6e5 100644
>  --- a/kdump.sysconfig.i386
>  +++ b/kdump.sysconfig.i386
>  @@ -16,7 +16,7 @@ KDUMP_COMMANDLINE=""
>   
>   # This variable lets us append arguments to the current kdump commandline
>   # As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline
>  -KDUMP_COMMANDLINE_APPEND="irqpoll nr_cpus=1 reset_devices numa=off
> udev.children-max=2 panic=10 rootflags=nofail"
>  +KDUMP_COMMANDLINE_APPEND="irqpoll nr_cpus=1 reset_devices numa=off
> udev.children-max=2 panic=10 rootflags=nofail transparent_hugepage=never"
>   
>   # Any additional kexec arguments required.  In most situations, this should
>   # be left empty
>  diff --git a/kdump.sysconfig.ppc64 b/kdump.sysconfig.ppc64
>  index 5295626..dd09598 100644
>  --- a/kdump.sysconfig.ppc64
>  +++ b/kdump.sysconfig.ppc64
>  @@ -16,7 +16,7 @@ KDUMP_COMMANDLINE=""
>   
>   # This variable lets us append arguments to the current kdump commandline
>   # As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline
>  -KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 noirqdistrib reset_devices
> cgroup_disable=memory numa=off udev.children-max=2 ehea.use_mcs=0 panic=10
> rootflags=nofail kvm_cma_resv_ratio=0"
>  +KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 noirqdistrib reset_devices
> cgroup_disable=memory numa=off udev.children-max=2 ehea.use_mcs=0 panic=10
> rootflags=nofail kvm_cma_resv_ratio=0 transparent_hugepage=never"
>   
>   # Any additional kexec arguments required.  In most situations, this should
>   # be left empty
>  diff --git a/kdump.sysconfig.ppc64le b/kdump.sysconfig.ppc64le
>  index 5295626..dd09598 100644
>  --- a/kdump.sysconfig.ppc64le
>  +++ b/kdump.sysconfig.ppc64le
>  @@ -16,7 +16,7 @@ KDUMP_COMMANDLINE=""
>   
>   # This variable lets us append arguments to the current kdump commandline
>   # As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline
>  -KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 noirqdistrib reset_devices
> cgroup_disable=memory numa=off udev.children-max=2 ehea.use_mcs=0 panic=10
> rootflags=nofail kvm_cma_resv_ratio=0"
>  +KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 noirqdistrib reset_devices
> cgroup_disable=memory numa=off udev.children-max=2 ehea.use_mcs=0 panic=10
> rootflags=nofail kvm_cma_resv_ratio=0 transparent_hugepage=never"
>   
>   # Any additional kexec arguments required.  In most situations, this should
>   # be left empty
>  diff --git a/kdump.sysconfig.s390x b/kdump.sysconfig.s390x
>  index 745dd27..b103a88 100644
>  --- a/kdump.sysconfig.s390x
>  +++ b/kdump.sysconfig.s390x
>  @@ -16,7 +16,7 @@ KDUMP_COMMANDLINE=""
>   
>   # This variable lets us append arguments to the current kdump commandline
>   # As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline
>  -KDUMP_COMMANDLINE_APPEND="nr_cpus=1 cgroup_disable=memory numa=off
> udev.children-max=2 panic=10 rootflags=nofail"
>  +KDUMP_COMMANDLINE_APPEND="nr_cpus=1 cgroup_disable=memory numa=off
> udev.children-max=2 panic=10 rootflags=nofail transparent_hugepage=never"
>   
>   # Any additional /sbin/mkdumprd arguments required.
>   MKDUMPRD_ARGS=""
>  diff --git a/kdump.sysconfig.x86_64 b/kdump.sysconfig.x86_64
>  index d9ad9b5..7991d68 100644
>  --- a/kdump.sysconfig.x86_64
>  +++ b/kdump.sysconfig.x86_64
>  @@ -16,7 +16,7 @@ KDUMP_COMMANDLINE=""
>   
>   # This variable lets us append arguments to the current kdump commandline
>   # As taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline
>  -KDUMP_COMMANDLINE_APPEND="irqpoll nr_cpus=1 reset_devices cgroup_disable=memory
> mce=off numa=off udev.children-max=2 panic=10 rootflags=nofail acpi_no_memhotplug"
>  +KDUMP_COMMANDLINE_APPEND="irqpoll nr_cpus=1 reset_devices cgroup_disable=memory
> mce=off numa=off udev.children-max=2 panic=10 rootflags=nofail acpi_no_memhotplug
> transparent_hugepage=never"
>   
>   # Any additional kexec arguments required.  In most situations, this should
>   # be left empty
>  -- 
>  1.8.3.1
>  
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