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FROMGIT: of: reserved-mem: print out reserved-mem details during boot

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It's important to know reserved-mem information in mobile world
since reserved memory via device tree keeps increased in platform
(e.g., 45% in our platform). Therefore, it's crucial to know the
reserved memory sizes breakdown for the memory accounting.

This patch prints out reserved memory details during boot to make
them visible.

Below is an example output:

[    0.000000] OF: reserved mem: 0x00000009f9400000..0x00000009fb3fffff ( 32768 KB ) map reusable test1
[    0.000000] OF: reserved mem: 0x00000000ffdf0000..0x00000000ffffffff ( 2112 KB ) map non-reusable test2
[    0.000000] OF: reserved mem: 0x0000000091000000..0x00000000912fffff ( 3072 KB ) nomap non-reusable test3

Bug: 269588564
Change-Id: Idf77b3a9de70ed13c806d3b03d1886b5ae89da62
Signed-off-by: Martin Liu <liumartin@google.com>
Link: https://lore.kernel.org/r/20230209160954.1471909-1-liumartin@google.com
Signed-off-by: Rob Herring <robh@kernel.org>
(cherry picked from commit aeb9267eb6
git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next)
This commit is contained in:
Martin Liu
2023-02-10 00:09:55 +08:00
committed by Treehugger Robot
parent eaee7326d3
commit 9c3705e41c
1 changed files with 10 additions and 0 deletions
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10
drivers/of/of_reserved_mem.c
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@@ -285,6 +285,16 @@ void __init fdt_init_reserved_mem(void)
memblock_clear_nomap(rmem->base, rmem->size);
else
memblock_free(rmem->base, rmem->size);
} else {
phys_addr_t end = rmem->base + rmem->size - 1;
bool reusable =
(of_get_flat_dt_prop(node, "reusable", NULL)) != NULL;
pr_info("%pa..%pa ( %lu KB ) %s %s %s\n",
&rmem->base, &end, (unsigned long)(rmem->size / SZ_1K),
nomap ? "nomap" : "map",
reusable ? "reusable" : "non-reusable",
rmem->name ? rmem->name : "unknown");
}
}
}