The patch titled
Subject: mm/zsmalloc: take obj index back from find_alloced_obj
has been added to the -mm tree. Its filename is
mm-zsmalloc-take-obj-index-back-from-find_alloced_obj.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-zsmalloc-take-obj-index-back-from-find_alloced_obj.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-zsmalloc-take-obj-index-back-from-find_alloced_obj.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Ganesh Mahendran <opensource.ganesh@xxxxxxxxx>
Subject: mm/zsmalloc: take obj index back from find_alloced_obj
the obj index value should be updated after return from
find_alloced_obj() to avoid CPU burning caused by unnecessary
object scanning.
Link: http://lkml.kernel.org/r/1467882338-4300-2-git-send-email-opensource.ganesh@xxxxxxxxx
Signed-off-by: Ganesh Mahendran <opensource.ganesh@xxxxxxxxx>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx>
Acked-by: Minchan Kim <minchan@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/zsmalloc.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff -puN mm/zsmalloc.c~mm-zsmalloc-take-obj-index-back-from-find_alloced_obj mm/zsmalloc.c
--- a/mm/zsmalloc.c~mm-zsmalloc-take-obj-index-back-from-find_alloced_obj
+++ a/mm/zsmalloc.c
@@ -1744,10 +1744,11 @@ static void zs_object_copy(struct size_c
* return handle.
*/
static unsigned long find_alloced_obj(struct size_class *class,
- struct page *page, int index)
+ struct page *page, int *obj_idx)
{
unsigned long head;
int offset = 0;
+ int index = *obj_idx;
unsigned long handle = 0;
void *addr = kmap_atomic(page);
@@ -1768,6 +1769,9 @@ static unsigned long find_alloced_obj(st
}
kunmap_atomic(addr);
+
+ *obj_idx = index;
+
return handle;
}
@@ -1793,7 +1797,7 @@ static int migrate_zspage(struct zs_pool
int ret = 0;
while (1) {
- handle = find_alloced_obj(class, s_page, obj_idx);
+ handle = find_alloced_obj(class, s_page, &obj_idx);
if (!handle) {
s_page = get_next_page(s_page);
if (!s_page)
_
Patches currently in -mm which might be from opensource.ganesh@xxxxxxxxx are
mm-migrate-support-non-lru-movable-page-migration-fix.patch
mm-zsmalloc-add-trace-events-for-zs_compact.patch
mm-compaction-remove-unnecessary-order-check-in-try_to_compact_pages.patch
mm-zsmalloc-use-obj_index-to-keep-consistent-with-others.patch
mm-zsmalloc-take-obj-index-back-from-find_alloced_obj.patch
mm-zsmalloc-use-class-objs_per_zspage-to-get-num-of-max-objects.patch
mm-zsmalloc-avoid-calculate-max-objects-of-zspage-twice.patch
mm-zsmalloc-keep-comments-consistent-with-code.patch
mm-zsmalloc-add-__init__exit-attribute.patch
mm-zsmalloc-use-helper-to-clear-page-flags-bit.patch
mm-zsmalloc-add-per-class-compact-trace-event.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
