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Revert "mm/memblock: show memblock reserved with size information"

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This reverts commit 1fc0ecb55f.

Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Change-Id: I4ea80186ac8e80c882aee85a15a8e9898a52d433
This commit is contained in:
Jianqun Xu 2022-04-06 17:22:52 +08:00 • committed by Tao Huang
parent dd3e0d2141
commit d700c5c3f9
3 changed files with 0 additions and 60 deletions
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7
mm/Kconfig
View file

@ -63,13 +63,6 @@ config SPARSEMEM_MANUAL
endchoice
config MEMBLOCK_DEBUGFS
bool "Memblock debugfs for reserved memory"
depends on DEBUG_FS && ARCH_KEEP_MEMBLOCK
help
Extend memblock debugfs to show size of each memblock, and shows the
result of total size by KiB format.
config DISCONTIGMEM
def_bool y
depends on (!SELECT_MEMORY_MODEL && ARCH_DISCONTIGMEM_ENABLE) || DISCONTIGMEM_MANUAL

1
mm/Makefile
View file

@ -62,7 +62,6 @@ CFLAGS_page_alloc.o += -DDYNAMIC_DEBUG_MODULE
obj-y += page-alloc.o
obj-y += init-mm.o
obj-y += memblock.o
obj-$(CONFIG_MEMBLOCK_DEBUGFS) += memblock_debugfs.o
ifdef CONFIG_MMU
obj-$(CONFIG_ADVISE_SYSCALLS) += madvise.o

52
mm/memblock_debugfs.c
View file

@ -1,52 +0,0 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Debugfs for reserved memory blocks.
*
* Copyright (C) 2022 Rockchip Electronics Co. Ltd.
*/
#include <linux/init.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/memblock.h>
#define K(size) ((unsigned long)((size) >> 10))
static int memblock_debugfs_show(struct seq_file *m, void *private)
{
struct memblock_type *type = m->private;
struct memblock_region *reg;
int i;
phys_addr_t end;
unsigned long z = 0, t = 0;
for (i = 0; i < type->cnt; i++) {
reg = &type->regions[i];
end = reg->base + reg->size - 1;
z = (unsigned long)reg->size;
t += z;
seq_printf(m, "%4d: ", i);
seq_printf(m, "%pa..%pa (%10lu %s)\n", &reg->base, &end,
(z >= 1024) ? (K(z)) : z,
(z >= 1024) ? "KiB" : "Bytes");
}
seq_printf(m, "Total: %lu KiB\n", K(t));
return 0;
}
DEFINE_SHOW_ATTRIBUTE(memblock_debugfs);
static int __init memblock_debugfs_init(void)
{
struct dentry *root = debugfs_lookup("memblock", NULL);
if (!root)
return -EPROBE_DEFER;
debugfs_create_file("reserved_size", 0444, root,
&memblock.reserved, &memblock_debugfs_fops);
return 0;
}
late_initcall(memblock_debugfs_init);