• Mike Rapoport's avatar
    mm: memblock: make keeping memblock memory opt-in rather than opt-out · 350e88ba
    Mike Rapoport authored
    Most architectures do not need the memblock memory after the page
    allocator is initialized, but only few enable ARCH_DISCARD_MEMBLOCK in the
    arch Kconfig.
    
    Replacing ARCH_DISCARD_MEMBLOCK with ARCH_KEEP_MEMBLOCK and inverting the
    logic makes it clear which architectures actually use memblock after
    system initialization and skips the necessity to add ARCH_DISCARD_MEMBLOCK
    to the architectures that are still missing that option.
    
    Link: http://lkml.kernel.org/r/1556102150-32517-1-git-send-email-rppt@linux.ibm.com
    
    
    Signed-off-by: default avatarMike Rapoport <rppt@linux.ibm.com>
    Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
    Cc: Russell King <linux@armlinux.org.uk>
    Cc: Catalin Marinas <catalin.marinas@arm.com>
    Cc: Will Deacon <will.deacon@arm.com>
    Cc: Richard Kuo <rkuo@codeaurora.org>
    Cc: Tony Luck <tony.luck@intel.com>
    Cc: Fenghua Yu <fenghua.yu@intel.com>
    Cc: Geert Uytterhoeven <geert@linux-m68k.org>
    Cc: Ralf Baechle <ralf@linux-mips.org>
    Cc: Paul Burton <paul.burton@mips.com>
    Cc: James Hogan <jhogan@kernel.org>
    Cc: Ley Foon Tan <lftan@altera.com>
    Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
    Cc: Paul Mackerras <paulus@samba.org>
    Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
    Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
    Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
    Cc: Rich Felker <dalias@libc.org>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Cc: Ingo Molnar <mingo@redhat.com>
    Cc: Borislav Petkov <bp@alien8.de>
    Cc: "H. Peter Anvin" <hpa@zytor.com>
    Cc: Eric Biederman <ebiederm@xmission.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    350e88ba