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SubjectRe: [PATCH] thp: 'transparent_hugepage=' can also be specified on cmdline
On Wed, 22 Feb 2012, Andrea Arcangeli wrote:

> > diff --git a/Documentation/vm/transhuge.txt b/Documentation/vm/transhuge.txt
> > index 29bdf62..4a3816d 100644
> > --- a/Documentation/vm/transhuge.txt
> > +++ b/Documentation/vm/transhuge.txt
> > @@ -103,6 +103,9 @@ echo always >/sys/kernel/mm/transparent_hugepage/enabled
> > echo madvise >/sys/kernel/mm/transparent_hugepage/enabled
> > echo never >/sys/kernel/mm/transparent_hugepage/enabled
> >
> > +The always/madvise/never value can also be specified on the kernel boot
> > +commandline using 'transparent_hugepage=' parameter.
> > +
> > It's also possible to limit defrag efforts in the VM to generate
>
> This is a dup.

I am blind and you are right.

v2 below. Thanks.



From: Jiri Kosina <jkosina@suse.cz>
Subject: [PATCH] thp: 'transparent_hugepage=' can also be specified on cmdline

Behavior of THP can either be toggled through sysfs in runtime or using a
kernel cmdline parameter 'transparent_hugepage='. Document the latter in
kernel-parameters.txt

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
---
Documentation/kernel-parameters.txt | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 033d4e6..a4de9b9 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -2629,6 +2629,13 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
to facilitate early boot debugging.
See also Documentation/trace/events.txt

+ transparent_hugepage=
+ [KNL]
+ Format: [always|madvise|never]
+ Can be used to control the default behavior of the system
+ with respect to transparent hugepages.
+ See Documentation/vm/transhuge.txt for more details.
+
tsc= Disable clocksource stability checks for TSC.
Format: <string>
[x86] reliable: mark tsc clocksource as reliable, this
--
Jiri Kosina
SUSE Labs


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