[PATCH] powerpc/ptdump: Fix display a BAT's size unit

[PATCH] powerpc/ptdump: Fix display a BAT's size unit

[Christophe Leroy]

We have wrong units on BAT's sizes (G instead of M, M instead of ...)

	---[ Instruction Block Address Translation ]---
	0: 0xc0000000-0xc03fffff 0x00000000         4G Kernel   x     m
	1: 0xc0400000-0xc05fffff 0x00400000         2G Kernel   x     m
	2: 0xc0600000-0xc06fffff 0x00600000         1G Kernel   x     m
	3: 0xc0700000-0xc077ffff 0x00700000       512M Kernel   x     m
	4: 0xc0780000-0xc079ffff 0x00780000       128M Kernel   x     m
	5: 0xc07a0000-0xc07bffff 0x007a0000       128M Kernel   x     m
	6:         -
	7:         -

This is because pt_dump_size() expects a size in Kbytes but
bat_show_603() gives the size in bytes.

To avoid risk of confusion, change pt_dump_size() to take bytes.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
---
 arch/powerpc/mm/ptdump/ptdump.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/mm/ptdump/ptdump.c b/arch/powerpc/mm/ptdump/ptdump.c
index bf251191e78d..031956d0ee84 100644
--- a/arch/powerpc/mm/ptdump/ptdump.c
+++ b/arch/powerpc/mm/ptdump/ptdump.c
@@ -123,7 +123,7 @@ static struct ptdump_range ptdump_range[] __ro_after_init = {
 
 void pt_dump_size(struct seq_file *m, unsigned long size)
 {
-	static const char units[] = "KMGTPE";
+	static const char units[] = " KMGTPE";
 	const char *unit = units;
 
 	/* Work out what appropriate unit to use */
@@ -176,7 +176,7 @@ static void dump_addr(struct pg_state *st, unsigned long addr)
 
 	pt_dump_seq_printf(st->seq, REG "-" REG " ", st->start_address, addr - 1);
 	pt_dump_seq_printf(st->seq, " " REG " ", st->start_pa);
-	pt_dump_size(st->seq, (addr - st->start_address) >> 10);
+	pt_dump_size(st->seq, addr - st->start_address);
 }
 
 static void note_prot_wx(struct pg_state *st, unsigned long addr)
-- 
2.33.1

Re: [PATCH] powerpc/ptdump: Fix display a BAT's size unit

[Michael Ellerman]

On Fri, 26 Nov 2021 11:30:03 +0100, Christophe Leroy wrote:
> We have wrong units on BAT's sizes (G instead of M, M instead of ...)
> 
> 	---[ Instruction Block Address Translation ]---
> 	0: 0xc0000000-0xc03fffff 0x00000000         4G Kernel   x     m
> 	1: 0xc0400000-0xc05fffff 0x00400000         2G Kernel   x     m
> 	2: 0xc0600000-0xc06fffff 0x00600000         1G Kernel   x     m
> 	3: 0xc0700000-0xc077ffff 0x00700000       512M Kernel   x     m
> 	4: 0xc0780000-0xc079ffff 0x00780000       128M Kernel   x     m
> 	5: 0xc07a0000-0xc07bffff 0x007a0000       128M Kernel   x     m
> 	6:         -
> 	7:         -
> 
> [...]

Applied to powerpc/next.

[1/1] powerpc/ptdump: Fix display a BAT's size unit
      https://git.kernel.org/powerpc/c/cdc81aece8041fd5437bdabde6c543cdeb2891a8

cheers