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Mike Rapoport (Microsoft)
9fac145b6d
Every architecture that supports hugetlb_cma command line parameter reserves CMA areas for hugetlb during setup_arch(). This obfuscates the ordering of hugetlb CMA initialization with respect to the rest initialization of the core MM. Introduce arch_hugetlb_cma_order() callback to allow architectures report the desired order-per-bit of CMA areas and provide a week implementation of arch_hugetlb_cma_order() for architectures that don't support hugetlb with CMA. Use this callback in hugetlb_cma_reserve() instead if passing the order as parameter and call hugetlb_cma_reserve() from mm_core_init_early() rather than have it spread over architecture specific code. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Mike Rapoport (Microsoft) <[email protected]> Cc: Alexander Gordeev <[email protected]> Cc: Alex Shi <[email protected]> Cc: Andreas Larsson <[email protected]> Cc: "Borislav Petkov (AMD)" <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: David Hildenbrand <[email protected]> Cc: David S. Miller <[email protected]> Cc: Dinh Nguyen <[email protected]> Cc: Geert Uytterhoeven <[email protected]> Cc: Guo Ren <[email protected]> Cc: Heiko Carstens <[email protected]> Cc: Helge Deller <[email protected]> Cc: Huacai Chen <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Johannes Berg <[email protected]> Cc: John Paul Adrian Glaubitz <[email protected]> Cc: Jonathan Corbet <[email protected]> Cc: Klara Modin <[email protected]> Cc: Liam Howlett <[email protected]> Cc: Lorenzo Stoakes <[email protected]> Cc: Magnus Lindholm <[email protected]> Cc: Matt Turner <[email protected]> Cc: Max Filippov <[email protected]> Cc: Michael Ellerman <[email protected]> Cc: Michal Hocko <[email protected]> Cc: Michal Simek <[email protected]> Cc: Muchun Song <[email protected]> Cc: Oscar Salvador <[email protected]> Cc: Palmer Dabbelt <[email protected]> Cc: Pratyush Yadav <[email protected]> Cc: Richard Weinberger <[email protected]> Cc: "Ritesh Harjani (IBM)" <[email protected]> Cc: Russell King <[email protected]> Cc: Stafford Horne <[email protected]> Cc: Suren Baghdasaryan <[email protected]> Cc: Thomas Bogendoerfer <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Vasily Gorbik <[email protected]> Cc: Vineet Gupta <[email protected]> Cc: Vlastimil Babka <[email protected]> Cc: Will Deacon <[email protected]> Signed-off-by: Andrew Morton <[email protected]>