The patch titled
Subject: tile: query dynamic DEBUG_PAGEALLOC setting
has been added to the -mm tree. Its filename is
tile-query-dynamic-debug_pagealloc-setting.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/tile-query-dynamic-debug_pagealloc-setting.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/tile-query-dynamic-debug_pagealloc-setting.patch
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------------------------------------------------------
From: Joonsoo Kim <js1304@xxxxxxxxx>
Subject: tile: query dynamic DEBUG_PAGEALLOC setting
We can disable debug_pagealloc processing even if the code is complied
with CONFIG_DEBUG_PAGEALLOC. This patch changes the code to query whether
it is enabled or not in runtime.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Chris Metcalf <cmetcalf@xxxxxxxxxx>
Cc: Christian Borntraeger <borntraeger@xxxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxx>
Cc: Takashi Iwai <tiwai@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/tile/mm/init.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff -puN arch/tile/mm/init.c~tile-query-dynamic-debug_pagealloc-setting arch/tile/mm/init.c
--- a/arch/tile/mm/init.c~tile-query-dynamic-debug_pagealloc-setting
+++ a/arch/tile/mm/init.c
@@ -896,17 +896,15 @@ void __init pgtable_cache_init(void)
panic("pgtable_cache_init(): Cannot create pgd cache");
}
-#ifdef CONFIG_DEBUG_PAGEALLOC
-static long __write_once initfree;
-#else
static long __write_once initfree = 1;
-#endif
+static bool __write_once set_initfree_done;
/* Select whether to free (1) or mark unusable (0) the __init pages. */
static int __init set_initfree(char *str)
{
long val;
if (kstrtol(str, 0, &val) == 0) {
+ set_initfree_done = true;
initfree = val;
pr_info("initfree: %s free init pages\n",
initfree ? "will" : "won't");
@@ -919,6 +917,11 @@ static void free_init_pages(char *what,
{
unsigned long addr = (unsigned long) begin;
+ /* Prefer user request first */
+ if (!set_initfree_done) {
+ if (debug_pagealloc_enabled())
+ initfree = 0;
+ }
if (kdata_huge && !initfree) {
pr_warn("Warning: ignoring initfree=0: incompatible with kdata=huge\n");
initfree = 1;
_
Patches currently in -mm which might be from js1304@xxxxxxxxx are
mm-slab-fix-stale-code-comment.patch
mm-slab-remove-useless-structure-define.patch
mm-slab-remove-the-checks-for-slab-implementation-bug.patch
mm-slab-activate-debug_pagealloc-in-slab-when-it-is-actually-enabled.patch
mm-slab-use-more-appropriate-condition-check-for-debug_pagealloc.patch
mm-slab-clean-up-debug_pagealloc-processing-code.patch
mm-slab-alternative-implementation-for-debug_slab_leak.patch
mm-slab-remove-object-status-buffer-for-debug_slab_leak.patch
mm-slab-put-the-freelist-at-the-end-of-slab-page.patch
mm-slab-align-cache-size-first-before-determination-of-off_slab-candidate.patch
mm-slab-clean-up-cache-type-determination.patch
mm-slab-do-not-change-cache-size-if-debug-pagealloc-isnt-possible.patch
mm-slab-make-criteria-for-off-slab-determination-robust-and-simple.patch
mm-slab-factor-out-slab-list-fixup-code.patch
mm-slab-factor-out-debugging-initialization-in-cache_init_objs.patch
mm-slab-introduce-new-slab-management-type-objfreelist_slab.patch
mm-slab-re-implement-pfmemalloc-support.patch
mm-slub-support-left-red-zone.patch
mm-compaction-fix-invalid-free_pfn-and-compact_cached_free_pfn.patch
mm-compaction-pass-only-pageblock-aligned-range-to-pageblock_pfn_to_page.patch
mm-compaction-speed-up-pageblock_pfn_to_page-when-zone-is-contiguous.patch
mm-vmalloc-query-dynamic-debug_pagealloc-setting.patch
mm-slub-query-dynamic-debug_pagealloc-setting.patch
sound-query-dynamic-debug_pagealloc-setting.patch
powerpc-query-dynamic-debug_pagealloc-setting.patch
tile-query-dynamic-debug_pagealloc-setting.patch
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