On 02/24/2014 03:28 PM, 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. Doesn't this essentially mean "don't use sysfs for configuration"? Seems like at least /sys/kernel/mm/transparent_hugepage would need the same treatment. Couldn't we also (maybe in parallel) just teach the sysctl userspace about sysfs? This way we don't have to do parallel sysctls and sysfs for *EVERYTHING* in the kernel: sysfs.kernel.mm.transparent_hugepage.enabled=enabled Or do we just say "sysctls are the way to go for anything that might need to be persistent, don't use sysfs"? -- 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/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>