Eric Lee / smarc-fsl-linux-kernel

16 Dec, 2009

1 commit

  • d0f209f68   ksm: remove unswappable max_kernel_pages ... Browse Code »

    Now that ksm pages are swappable, and the known holes plugged, remove
    mention of unswappable kernel pages from KSM documentation and comments.

    Remove the totalram_pages/4 initialization of max_kernel_pages. In fact,
    remove max_kernel_pages altogether - we can reinstate it if removal turns
    out to break someone's script; but if we later want to limit KSM's memory
    usage, limiting the stable nodes would not be an effective approach.

    Signed-off-by: Hugh Dickins
    Cc: Izik Eidus
    Cc: Andrea Arcangeli
    Cc: Chris Wright
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Hugh Dickins
     

08 Oct, 2009

1 commit

  • c73602ad3   ksm: more on default values ... Browse Code »

    Adjust the max_kernel_pages default to a quarter of totalram_pages,
    instead of nr_free_buffer_pages() / 4: the KSM pages themselves come from
    highmem, and even on a 16GB PAE machine, 4GB of KSM pages would only be
    pinning 32MB of lowmem with their rmap_items, so no need for the more
    obscure calculation (nor for its own special init function).

    There is no way for the user to switch KSM on if CONFIG_SYSFS is not
    enabled, so in that case default run to KSM_RUN_MERGE.

    Update KSM Documentation and Kconfig to reflect the new defaults.

    Signed-off-by: Hugh Dickins
    Cc: Izik Eidus
    Cc: Andrea Arcangeli
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Hugh Dickins
     

22 Sep, 2009

1 commit

  • 7701c9c0f   ksm: add some documentation ... Browse Code »

    Add Documentation/vm/ksm.txt: how to use the Kernel Samepage Merging feature

    Signed-off-by: Hugh Dickins
    Cc: Michael Kerrisk
    Cc: Randy Dunlap
    Acked-by: Izik Eidus
    Cc: Andrea Arcangeli
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Hugh Dickins