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authorLinus Torvalds <torvalds@linux-foundation.org>2016-05-20 06:00:06 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2016-05-20 06:00:06 +0300
commita05a70db34ba24ca009e1c9cedaef26fd17d5470 (patch)
treed5d8d0c80293bed52f2103ccc56a9e09117dc983 /arch/mips/mm/tlb-r4k.c
parent03b979dd0323ace8e29a0561cd5232f73a060c09 (diff)
parent4741526b83c5d3a3d661d1896f9e7414c5730bcb (diff)
downloadlinux-a05a70db34ba24ca009e1c9cedaef26fd17d5470.tar.xz
Merge branch 'akpm' (patches from Andrew)
Merge updates from Andrew Morton: - fsnotify fix - poll() timeout fix - a few scripts/ tweaks - debugobjects updates - the (small) ocfs2 queue - Minor fixes to kernel/padata.c - Maybe half of the MM queue * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (117 commits) mm, page_alloc: restore the original nodemask if the fast path allocation failed mm, page_alloc: uninline the bad page part of check_new_page() mm, page_alloc: don't duplicate code in free_pcp_prepare mm, page_alloc: defer debugging checks of pages allocated from the PCP mm, page_alloc: defer debugging checks of freed pages until a PCP drain cpuset: use static key better and convert to new API mm, page_alloc: inline pageblock lookup in page free fast paths mm, page_alloc: remove unnecessary variable from free_pcppages_bulk mm, page_alloc: pull out side effects from free_pages_check mm, page_alloc: un-inline the bad part of free_pages_check mm, page_alloc: check multiple page fields with a single branch mm, page_alloc: remove field from alloc_context mm, page_alloc: avoid looking up the first zone in a zonelist twice mm, page_alloc: shortcut watermark checks for order-0 pages mm, page_alloc: reduce cost of fair zone allocation policy retry mm, page_alloc: shorten the page allocator fast path mm, page_alloc: check once if a zone has isolated pageblocks mm, page_alloc: move __GFP_HARDWALL modifications out of the fastpath mm, page_alloc: simplify last cpupid reset mm, page_alloc: remove unnecessary initialisation from __alloc_pages_nodemask() ...
Diffstat (limited to 'arch/mips/mm/tlb-r4k.c')
-rw-r--r--arch/mips/mm/tlb-r4k.c21
1 files changed, 11 insertions, 10 deletions
diff --git a/arch/mips/mm/tlb-r4k.c b/arch/mips/mm/tlb-r4k.c
index 5a5c7fec645e..e8b335c16295 100644
--- a/arch/mips/mm/tlb-r4k.c
+++ b/arch/mips/mm/tlb-r4k.c
@@ -405,19 +405,20 @@ void add_wired_entry(unsigned long entrylo0, unsigned long entrylo1,
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
-int __init has_transparent_hugepage(void)
+int has_transparent_hugepage(void)
{
- unsigned int mask;
- unsigned long flags;
-
- local_irq_save(flags);
- write_c0_pagemask(PM_HUGE_MASK);
- back_to_back_c0_hazard();
- mask = read_c0_pagemask();
- write_c0_pagemask(PM_DEFAULT_MASK);
+ static unsigned int mask = -1;
- local_irq_restore(flags);
+ if (mask == -1) { /* first call comes during __init */
+ unsigned long flags;
+ local_irq_save(flags);
+ write_c0_pagemask(PM_HUGE_MASK);
+ back_to_back_c0_hazard();
+ mask = read_c0_pagemask();
+ write_c0_pagemask(PM_DEFAULT_MASK);
+ local_irq_restore(flags);
+ }
return mask == PM_HUGE_MASK;
}