arch: simplify several early memory allocations
authorMike Rapoport <rppt@linux.ibm.com>
Fri, 8 Mar 2019 00:31:06 +0000 (16:31 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 8 Mar 2019 02:32:03 +0000 (18:32 -0800)
commitb63a07d69d404435125e77286620891ef8f9d719
tree9c6d64b7868c4215b0e7c242267a2ba90ceacd1b
parent1e8ffd50fd201d05b3de97858ce6868cf774b4a8
arch: simplify several early memory allocations

There are several early memory allocations in arch/ code that use
memblock_phys_alloc() to allocate memory, convert the returned physical
address to the virtual address and then set the allocated memory to
zero.

Exactly the same behaviour can be achieved simply by calling
memblock_alloc(): it allocates the memory in the same way as
memblock_phys_alloc(), then it performs the phys_to_virt() conversion
and clears the allocated memory.

Replace the longer sequence with a simpler call to memblock_alloc().

Link: http://lkml.kernel.org/r/1546248566-14910-6-git-send-email-rppt@linux.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Mark Salter <msalter@redhat.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Vincent Chen <deanbo422@gmail.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/arm/mm/mmu.c
arch/c6x/mm/dma-coherent.c
arch/nds32/mm/init.c
arch/powerpc/kernel/setup-common.c
arch/powerpc/mm/ppc_mmu_32.c
arch/powerpc/platforms/powernv/opal.c
arch/s390/numa/numa.c
arch/sparc/kernel/prom_64.c
arch/sparc/mm/init_64.c
arch/unicore32/mm/mmu.c