]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
mm/page_alloc: track range of active PCP lists during bulk free
authorMel Gorman <mgorman@techsingularity.net>
Tue, 22 Mar 2022 21:43:33 +0000 (14:43 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 22 Mar 2022 22:57:06 +0000 (15:57 -0700)
commit35b6d770e6334aa470080570f0f81c8b74a07afd
treebfd767977bc24462df79ffa4acb8abfd0846d4f2
parentca7b59b1de72450b3e696bada3506a519ac5455c
mm/page_alloc: track range of active PCP lists during bulk free

free_pcppages_bulk() frees pages in a round-robin fashion.  Originally,
this was dealing only with migratetypes but storing high-order pages
means that there can be many more empty lists that are uselessly
checked.  Track the minimum and maximum active pindex to reduce the
search space.

Link: https://lkml.kernel.org/r/20220217002227.5739-3-mgorman@techsingularity.net
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Tested-by: Aaron Lu <aaron.lu@intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/page_alloc.c