The patch titled
Subject: nios2: switch to NO_BOOTMEM
has been added to the -mm tree. Its filename is
nios2-switch-to-no_bootmem.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/nios2-switch-to-no_bootmem.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/nios2-switch-to-no_bootmem.patch
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------------------------------------------------------
From: Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx>
Subject: nios2: switch to NO_BOOTMEM
Remove bootmem bitmap initialization and replace reserve_bootmem() with
memblock_reserve().
Link: http://lkml.kernel.org/r/1533326330-31677-5-git-send-email-rppt@xxxxxxxxxxxxxxxxxx
Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx>
Acked-by: Ley Foon Tan <ley.foon.tan@xxxxxxxxx>
Cc: Guan Xuetao <gxt@xxxxxxxxxx>
Cc: Richard Kuo <rkuo@xxxxxxxxxxxxxx>
Cc: Richard Weinberger <richard@xxxxxx>
Cc: Rob Herring <robh@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/nios2/Kconfig | 2 +
arch/nios2/kernel/prom.c | 7 ------
arch/nios2/kernel/setup.c | 37 ++++--------------------------------
3 files changed, 7 insertions(+), 39 deletions(-)
--- a/arch/nios2/Kconfig~nios2-switch-to-no_bootmem
+++ a/arch/nios2/Kconfig
@@ -24,6 +24,8 @@ config NIOS2
select USB_ARCH_HAS_HCD if USB_SUPPORT
select CPU_NO_EFFICIENT_FFS
select HAVE_MEMBLOCK
+ select ARCH_DISCARD_MEMBLOCK
+ select NO_BOOTMEM
config GENERIC_CSUM
def_bool y
--- a/arch/nios2/kernel/prom.c~nios2-switch-to-no_bootmem
+++ a/arch/nios2/kernel/prom.c
@@ -32,13 +32,6 @@
#include <asm/sections.h>
-int __init early_init_dt_reserve_memory_arch(phys_addr_t base, phys_addr_t size,
- bool nomap)
-{
- reserve_bootmem(base, size, BOOTMEM_DEFAULT);
- return 0;
-}
-
void __init early_init_devtree(void *params)
{
__be32 *dtb = (u32 *)__dtb_start;
--- a/arch/nios2/kernel/setup.c~nios2-switch-to-no_bootmem
+++ a/arch/nios2/kernel/setup.c
@@ -144,10 +144,11 @@ asmlinkage void __init nios2_boot_init(u
void __init setup_arch(char **cmdline_p)
{
- int bootmap_size;
+ int dram_start;
console_verbose();
+ dram_start = memblock_start_of_DRAM();
memory_size = memblock_phys_mem_size();
memory_start = PAGE_ALIGN((unsigned long)__pa(_end));
memory_end = (unsigned long) CONFIG_NIOS2_MEM_BASE + memory_size;
@@ -165,39 +166,11 @@ void __init setup_arch(char **cmdline_p)
max_low_pfn = PFN_DOWN(memory_end);
max_mapnr = max_low_pfn;
- /*
- * give all the memory to the bootmap allocator, tell it to put the
- * boot mem_map at the start of memory
- */
- pr_debug("init_bootmem_node(?,%#lx, %#x, %#lx)\n",
- min_low_pfn, PFN_DOWN(PHYS_OFFSET), max_low_pfn);
- bootmap_size = init_bootmem_node(NODE_DATA(0),
- min_low_pfn, PFN_DOWN(PHYS_OFFSET),
- max_low_pfn);
-
- /*
- * free the usable memory, we have to make sure we do not free
- * the bootmem bitmap so we then reserve it after freeing it :-)
- */
- pr_debug("free_bootmem(%#lx, %#lx)\n",
- memory_start, memory_end - memory_start);
- free_bootmem(memory_start, memory_end - memory_start);
-
- /*
- * Reserve the bootmem bitmap itself as well. We do this in two
- * steps (first step was init_bootmem()) because this catches
- * the (very unlikely) case of us accidentally initializing the
- * bootmem allocator with an invalid RAM area.
- *
- * Arguments are start, size
- */
- pr_debug("reserve_bootmem(%#lx, %#x)\n", memory_start, bootmap_size);
- reserve_bootmem(memory_start, bootmap_size, BOOTMEM_DEFAULT);
-
+ memblock_reserve(dram_start, memory_start - dram_start);
#ifdef CONFIG_BLK_DEV_INITRD
if (initrd_start) {
- reserve_bootmem(virt_to_phys((void *)initrd_start),
- initrd_end - initrd_start, BOOTMEM_DEFAULT);
+ memblock_reserve(virt_to_phys((void *)initrd_start),
+ initrd_end - initrd_start);
}
#endif /* CONFIG_BLK_DEV_INITRD */
_
Patches currently in -mm which might be from rppt@xxxxxxxxxxxxxxxxxx are
hexagon-switch-to-no_bootmem.patch
of-ignore-sub-page-memory-regions.patch
nios2-use-generic-early_init_dt_add_memory_arch.patch
nios2-switch-to-no_bootmem.patch
um-setup_physmem-stop-using-global-variables.patch
um-switch-to-no_bootmem.patch
unicore32-switch-to-no_bootmem.patch
