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fd8cfd3000
I've just discovered that the useful-sounding has_transparent_hugepage() is actually an architecture-dependent minefield: on some arches it only builds if CONFIG_TRANSPARENT_HUGEPAGE=y, on others it's also there when not, but on some of those (arm and arm64) it then gives the wrong answer; and on mips alone it's marked __init, which would crash if called later (but so far it has not been called later). Straighten this out: make it available to all configs, with a sensible default in asm-generic/pgtable.h, removing its definitions from those arches (arc, arm, arm64, sparc, tile) which are served by the default, adding #define has_transparent_hugepage has_transparent_hugepage to those (mips, powerpc, s390, x86) which need to override the default at runtime, and removing the __init from mips (but maybe that kind of code should be avoided after init: set a static variable the first time it's called). Signed-off-by: Hugh Dickins <hughd@google.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Andres Lagar-Cavilla <andreslc@google.com> Cc: Yang Shi <yang.shi@linaro.org> Cc: Ning Qu <quning@gmail.com> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Vineet Gupta <vgupta@synopsys.com> [arch/arc] Acked-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> [arch/s390] Acked-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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| .. | ||
| c-octeon.c | ||
| c-r3k.c | ||
| c-r4k.c | ||
| c-tx39.c | ||
| cache.c | ||
| cerr-sb1.c | ||
| cex-gen.S | ||
| cex-oct.S | ||
| cex-sb1.S | ||
| dma-default.c | ||
| extable.c | ||
| fault.c | ||
| gup.c | ||
| highmem.c | ||
| hugetlbpage.c | ||
| init.c | ||
| ioremap.c | ||
| Makefile | ||
| mmap.c | ||
| page-funcs.S | ||
| page.c | ||
| pgtable-32.c | ||
| pgtable-64.c | ||
| sc-debugfs.c | ||
| sc-ip22.c | ||
| sc-mips.c | ||
| sc-r5k.c | ||
| sc-rm7k.c | ||
| tlb-funcs.S | ||
| tlb-r3k.c | ||
| tlb-r4k.c | ||
| tlb-r8k.c | ||
| tlbex-fault.S | ||
| tlbex.c | ||
| uasm-micromips.c | ||
| uasm-mips.c | ||
| uasm.c | ||