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ANDROID: memblock: print memsize summary information

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With the previous patches, now we can print summary information.

Here's an example of 4GB DRAM device.

Reserved    :  746924 KB
 .kernel    :  137027 KB
 .unusable  :  609897 KB
System      : 3447380 KB
 .common    : 3152468 KB
 .reusable  :  294912 KB
Total       : 4194304 KB (  4096.00 MB )

Bug: 340432773
Signed-off-by: Jaewon Kim <jaewon31.kim@samsung.com>
Link: https://lore.kernel.org/linux-mm/20240521023957.2587005-9-jaewon31.kim@samsung.com/
Change-Id: Ifb090c8c8b2ecc9668559bacbf22c42fa297e676
This commit is contained in:
Jaewon Kim
2020-06-30 10:57:32 +09:00
committed by Suren Baghdasaryan
parent 75fe456d4e
commit 2b02c9976f
1 changed files with 13 additions and 1 deletions
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mm/memblock.c
+13 -1
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@@ -2775,7 +2775,8 @@ static int memblock_memsize_show(struct seq_file *m, void *private)
{
int i;
struct memsize_rgn_struct *rgn;
unsigned long reserved = 0, reusable = 0;
unsigned long reserved = 0, reusable = 0, total;
unsigned long system = totalram_pages() << PAGE_SHIFT;
sort(memsize_rgn, memsize_rgn_count,
sizeof(memsize_rgn[0]), memsize_rgn_cmp, NULL);
@@ -2801,13 +2802,24 @@ static int memblock_memsize_show(struct seq_file *m, void *private)
reserved += (unsigned long)rgn->size;
}
total = memsize_kinit + reserved + system;
seq_puts(m, "\n");
seq_printf(m, "Reserved : %7lu KB\n",
DIV_ROUND_UP(memsize_kinit + reserved, SZ_1K));
seq_printf(m, " .kernel : %7lu KB\n",
DIV_ROUND_UP(memsize_kinit, SZ_1K));
seq_printf(m, " .unusable : %7lu KB\n",
DIV_ROUND_UP(reserved, SZ_1K));
seq_printf(m, "System : %7lu KB\n",
DIV_ROUND_UP(system, SZ_1K));
seq_printf(m, " .common : %7lu KB\n",
DIV_ROUND_UP(system - reusable, SZ_1K));
seq_printf(m, " .reusable : %7lu KB\n",
DIV_ROUND_UP(reusable, SZ_1K));
seq_printf(m, "Total : %7lu KB ( %5lu.%02lu MB )\n",
DIV_ROUND_UP(total, SZ_1K),
total >> 20, ((total % SZ_1M) * 100) >> 20);
return 0;
}