Messages in this thread | | | Date | Tue, 25 Feb 2014 12:15:28 -0500 | From | Johannes Weiner <> | Subject | Re: [PATCH] ksm: Expose configuration via sysctl |
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On Tue, Feb 25, 2014 at 12:28:04AM +0100, Alexander Graf wrote: > Configuration of tunables and Linux virtual memory settings has traditionally > happened via sysctl. Thanks to that there are well established ways to make > sysctl configuration bits persistent (sysctl.conf). > > KSM introduced a sysfs based configuration path which is not covered by user > space persistent configuration frameworks. > > In order to make life easy for sysadmins, this patch adds all access to all > KSM tunables via sysctl as well. That way sysctl.conf works for KSM as well, > giving us a streamlined way to make KSM configuration persistent. > > Reported-by: Sasche Peilicke <speilicke@suse.com> > Signed-off-by: Alexander Graf <agraf@suse.de> > --- > kernel/sysctl.c | 10 +++++++ > mm/ksm.c | 78 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ > 2 files changed, 88 insertions(+), 0 deletions(-) > > diff --git a/kernel/sysctl.c b/kernel/sysctl.c > index 332cefc..2169a00 100644 > --- a/kernel/sysctl.c > +++ b/kernel/sysctl.c > @@ -217,6 +217,9 @@ extern struct ctl_table random_table[]; > #ifdef CONFIG_EPOLL > extern struct ctl_table epoll_table[]; > #endif > +#ifdef CONFIG_KSM > +extern struct ctl_table ksm_table[]; > +#endif > > #ifdef HAVE_ARCH_PICK_MMAP_LAYOUT > int sysctl_legacy_va_layout; > @@ -1279,6 +1282,13 @@ static struct ctl_table vm_table[] = { > }, > > #endif /* CONFIG_COMPACTION */ > +#ifdef CONFIG_KSM > + { > + .procname = "ksm", > + .mode = 0555, > + .child = ksm_table, > + }, > +#endif
ksm can be a module, so this won't work.
Can we make those controls proper module parameters instead?
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