]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
mm/page_alloc.c: fix the value of fallback_migratetype in alloc_extfrag tracepoint()
authorSrivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Wed, 11 Sep 2013 21:20:36 +0000 (14:20 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 11 Sep 2013 22:57:19 +0000 (15:57 -0700)
commitf92310c1877fc73470bdcd9228758fa3713c191b
tree9178b722246f411a60986047784f85d4a83376a9
parentfef903efcf0cb9721f3f2da719daec9bbc26f12b
mm/page_alloc.c: fix the value of fallback_migratetype in alloc_extfrag tracepoint()

In the current code, the value of fallback_migratetype that is printed
using the mm_page_alloc_extfrag tracepoint, is the value of the
migratetype *after* it has been set to the preferred migratetype (if the
ownership was changed).  Obviously that wouldn't have been the original
intent.  (We already have a separate 'change_ownership' field to tell
whether the ownership of the pageblock was changed from the
fallback_migratetype to the preferred type.)

The intent of the fallback_migratetype field is to show the migratetype
from which we borrowed pages in order to satisfy the allocation request.
So fix the code to print that value correctly.

Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Cody P Schafer <cody@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
include/trace/events/kmem.h
mm/page_alloc.c