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@xxxxxxx> 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@xxxxxxx> --- 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 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>