korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-14 07:44:21 +08:00
Code Issues Packages Projects Releases Wiki Activity

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

Browse Source 
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

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>
This commit is contained in:
Martin Liu 2023-02-10 00:09:55 +08:00 committed by Rob Herring
parent 0c559bc8ab
commit aeb9267eb6
1 changed files with 10 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/of/of_reserved_mem.c
View File

@ -284,6 +284,16 @@ void __init fdt_init_reserved_mem(void)
else
memblock_phys_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");
}
}
}