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powerpc/ptdump: Display size of BATs 

Display the size of areas mapped with BATs.

For that, the size display for pages is refactorised.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/acf764eee231f0358e66ca9e819f052804055acc.1589866984.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2020-05-19 05:48:52 +00:00 committed by Michael Ellerman
parent 3af4786eb4
commit 6b30830e20
3 changed files with 21 additions and 9 deletions
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4
arch/powerpc/mm/ptdump/bats.c
View File

@ -10,6 +10,8 @@
#include <asm/pgtable.h>
#include <asm/cpu_has_feature.h>
#include "ptdump.h"
static char *pp_601(int k, int pp)
{
if (pp == 0)
@ -42,6 +44,7 @@ static void bat_show_601(struct seq_file *m, int idx, u32 lower, u32 upper)
#else
seq_printf(m, "0x%08x ", pbn);
#endif
pt_dump_size(m, size);
seq_printf(m, "Kernel %s User %s", pp_601(k & 2, pp), pp_601(k & 1, pp));
@ -88,6 +91,7 @@ static void bat_show_603(struct seq_file *m, int idx, u32 lower, u32 upper, bool
#else
seq_printf(m, "0x%08x ", brpn);
#endif
pt_dump_size(m, size);
if (k == 1)
seq_puts(m, "User ");

23
arch/powerpc/mm/ptdump/ptdump.c
View File

@ -112,6 +112,19 @@ static struct addr_marker address_markers[] = {
seq_putc(m, c); \
})
void pt_dump_size(struct seq_file *m, unsigned long size)
{
static const char units[] = "KMGTPE";
const char *unit = units;
/* Work out what appropriate unit to use */
while (!(size & 1023) && unit[1]) {
size >>= 10;
unit++;
}
pt_dump_seq_printf(m, "%9lu%c ", size, *unit);
}
static void dump_flag_info(struct pg_state *st, const struct flag_info
*flag, u64 pte, int num)
{
@ -146,8 +159,6 @@ static void dump_flag_info(struct pg_state *st, const struct flag_info
static void dump_addr(struct pg_state *st, unsigned long addr)
{
static const char units[] = "KMGTPE";
const char *unit = units;
unsigned long delta;
#ifdef CONFIG_PPC64
@ -164,13 +175,7 @@ static void dump_addr(struct pg_state *st, unsigned long addr)
pt_dump_seq_printf(st->seq, " " REG " ", st->start_pa);
delta = (addr - st->start_address) >> 10;
}
/* Work out what appropriate unit to use */
while (!(delta & 1023) && unit[1]) {
delta >>= 10;
unit++;
}
pt_dump_seq_printf(st->seq, "%9lu%c", delta, *unit);
pt_dump_size(st->seq, delta);
}
static void note_prot_wx(struct pg_state *st, unsigned long addr)

3
arch/powerpc/mm/ptdump/ptdump.h
View File

@ -1,5 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/types.h>
#include <linux/seq_file.h>
struct flag_info {
u64 mask;
@ -17,3 +18,5 @@ struct pgtable_level {
};
extern struct pgtable_level pg_level[5];
void pt_dump_size(struct seq_file *m, unsigned long delta);