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powerpc/mm/radix: Prettify mapped memory range print out

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When we map memory at boot we print out the ranges of real addresses
that we mapped and the page size that was used.

Currently it's a bit ugly:

  Mapped range 0x0 - 0x2000000000 with 0x40000000
  Mapped range 0x200000000000 - 0x202000000000 with 0x40000000

Pad the addresses so they line up, and print the page size using
actual units, eg:

  Mapped 0x0000000000000000-0x0000000001200000 with 64.0 KiB pages
  Mapped 0x0000000001200000-0x0000000040000000 with 2.00 MiB pages
  Mapped 0x0000000040000000-0x0000000100000000 with 1.00 GiB pages

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Michael Ellerman 2017-08-30 17:41:17 +10:00
parent bd350f7121
commit 6deb6b474b
1 changed files with 6 additions and 1 deletions
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7
arch/powerpc/mm/pgtable-radix.c
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@ -16,6 +16,7 @@
#include <linux/memblock.h>
#include <linux/of_fdt.h>
#include <linux/mm.h>
#include <linux/string_helpers.h>
#include <asm/pgtable.h>
#include <asm/pgalloc.h>
@ -187,10 +188,14 @@ static inline void __meminit print_mapping(unsigned long start,
unsigned long end,
unsigned long size)
{
char buf[10];
if (end <= start)
return;
pr_info("Mapped range 0x%lx - 0x%lx with 0x%lx\n", start, end, size);
string_get_size(size, 1, STRING_UNITS_2, buf, sizeof(buf));
pr_info("Mapped 0x%016lx-0x%016lx with %s pages\n", start, end, buf);
}
static int __meminit create_physical_mapping(unsigned long start,