• Mel Gorman's avatar
    mm, show_mem: remove SHOW_MEM_FILTER_PAGE_COUNT · aec6a888
    Mel Gorman authored
    Commit 4b59e6c4 ("mm, show_mem: suppress page counts in
    non-blockable contexts") introduced SHOW_MEM_FILTER_PAGE_COUNT to
    suppress PFN walks on large memory machines.  Commit c78e9363
    do not walk all of system memory during show_mem") avoided a PFN walk in
    the generic show_mem helper which removes the requirement for
    SHOW_MEM_FILTER_PAGE_COUNT in that case.
    This patch removes PFN walkers from the arch-specific implementations
    that report on a per-node or per-zone granularity.  ARM and unicore32
    still do a PFN walk as they report memory usage on each bank which is a
    much finer granularity where the debugging information may still be of
    use.  As the remaining arches doing PFN walks have relatively small
    amounts of memory, this patch simply removes SHOW_MEM_FILTER_PAGE_COUNT.
    [akpm@linux-foundation.org: fix parisc]
    Signed-off-by: default avatarMel Gorman <mgorman@suse.de>
    Acked-by: default avatarDavid Rientjes <rientjes@google.com>
    Cc: Tony Luck <tony.luck@intel.com>
    Cc: Russell King <linux@arm.linux.org.uk>
    Cc: James Bottomley <jejb@parisc-linux.org>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
page_alloc.c 179 KB