The patch titled
Subject: thp: cleanup khugepaged startup
has been removed from the -mm tree. Its filename was
thp-cleanup-khugepaged-startup.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Subject: thp: cleanup khugepaged startup
Few trivial cleanups:
- no need to call set_recommended_min_free_kbytes() from
late_initcall() -- start_khugepaged() calls it;
- no need to call set_recommended_min_free_kbytes() from
start_khugepaged() if khugepaged is not started;
- there isn't much point in running start_khugepaged() if we've just
set transparent_hugepage_flags to zero;
- start_khugepaged() is misnamed -- it also used to stop the thread;
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/huge_memory.c | 18 ++++++++----------
1 file changed, 8 insertions(+), 10 deletions(-)
diff -puN mm/huge_memory.c~thp-cleanup-khugepaged-startup mm/huge_memory.c
--- a/mm/huge_memory.c~thp-cleanup-khugepaged-startup
+++ a/mm/huge_memory.c
@@ -110,10 +110,6 @@ static int set_recommended_min_free_kbyt
int nr_zones = 0;
unsigned long recommended_min;
- /* khugepaged thread has stopped to failed to start */
- if (!khugepaged_thread)
- return 0;
-
for_each_populated_zone(zone)
nr_zones++;
@@ -145,9 +141,8 @@ static int set_recommended_min_free_kbyt
setup_per_zone_wmarks();
return 0;
}
-late_initcall(set_recommended_min_free_kbytes);
-static int start_khugepaged(void)
+static int start_stop_khugepaged(void)
{
int err = 0;
if (khugepaged_enabled()) {
@@ -158,6 +153,7 @@ static int start_khugepaged(void)
pr_err("khugepaged: kthread_run(khugepaged) failed\n");
err = PTR_ERR(khugepaged_thread);
khugepaged_thread = NULL;
+ goto fail;
}
if (!list_empty(&khugepaged_scan.mm_head))
@@ -168,7 +164,7 @@ static int start_khugepaged(void)
kthread_stop(khugepaged_thread);
khugepaged_thread = NULL;
}
-
+fail:
return err;
}
@@ -302,7 +298,7 @@ static ssize_t enabled_store(struct kobj
int err;
mutex_lock(&khugepaged_mutex);
- err = start_khugepaged();
+ err = start_stop_khugepaged();
mutex_unlock(&khugepaged_mutex);
if (err)
@@ -651,10 +647,12 @@ static int __init hugepage_init(void)
* where the extra memory used could hurt more than TLB overhead
* is likely to save. The admin can still enable it through /sys.
*/
- if (totalram_pages < (512 << (20 - PAGE_SHIFT)))
+ if (totalram_pages < (512 << (20 - PAGE_SHIFT))) {
transparent_hugepage_flags = 0;
+ return 0;
+ }
- err = start_khugepaged();
+ err = start_stop_khugepaged();
if (err)
goto err_khugepaged;
_
Patches currently in -mm which might be from kirill.shutemov@xxxxxxxxxxxxxxx are
origin.patch
page-flags-trivial-cleanup-for-pagetrans-helpers.patch
page-flags-introduce-page-flags-policies-wrt-compound-pages.patch
page-flags-define-pg_locked-behavior-on-compound-pages.patch
page-flags-define-behavior-of-fs-io-related-flags-on-compound-pages.patch
page-flags-define-behavior-of-lru-related-flags-on-compound-pages.patch
page-flags-define-behavior-slb-related-flags-on-compound-pages.patch
page-flags-define-behavior-of-xen-related-flags-on-compound-pages.patch
page-flags-define-pg_reserved-behavior-on-compound-pages.patch
page-flags-define-pg_swapbacked-behavior-on-compound-pages.patch
page-flags-define-pg_swapcache-behavior-on-compound-pages.patch
page-flags-define-pg_mlocked-behavior-on-compound-pages.patch
page-flags-define-pg_uncached-behavior-on-compound-pages.patch
page-flags-define-pg_uptodate-behavior-on-compound-pages.patch
page-flags-look-on-head-page-if-the-flag-is-encoded-in-page-mapping.patch
mm-sanitize-page-mapping-for-tail-pages.patch
include-linux-page-flagsh-rename-macros-to-avoid-collisions.patch
linux-next.patch
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