[RFC][PATCH v2 0/3] mm/page:_owner: track page free call chain

From: Sergey Senozhatsky
Date: Fri Jul 08 2016 - 08:12:15 EST


Page owner tracks a call chain that has allocated a page, this
patch set extends it with a free_pages call chain tracking

Page dump, thus, now has the following format:

a) page allocated backtrace
b) page free backtrace
c) backtrace of the path that has trigger bad page

For a quick example of a case when this new b) part can make a
difference please see 0003.

-- do not add PAGE_OWNER_TRACK_FREE .config -- Joonsoo
-- minor improvements

Sergey Senozhatsky (3):
mm/page_owner: rename page_owner functions
mm/page_owner: rename PAGE_EXT_OWNER flag
mm/page_owner: track page free call chain

include/linux/page_ext.h | 13 +++++--
include/linux/page_owner.h | 16 ++++-----
mm/page_alloc.c | 4 +--
mm/page_owner.c | 86 ++++++++++++++++++++++++++++------------------
mm/vmstat.c | 5 ++-
5 files changed, 77 insertions(+), 47 deletions(-)