[PATCH 2/2] MIPS: Select ARCH_KEEP_MEMBLOCK to enable sysfs memblock debug

Tiezhu Yang
2020-12-03T03:20:05Z

In the current code, CONFIG_ARCH_KEEP_MEMBLOCK is not set for MIPS arch,
memblock_discard() will discard memory and reserved arrays if they were
allocated, select ARCH_KEEP_MEMBLOCK to give a chance to track "memory"
and "reserved" memblocks after early boot, with this patch, we can see
the following two sysfs interfaces under DEBUG_FS.

/sys/kernel/debug/memblock/memory
/sys/kernel/debug/memblock/reserved

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
---
arch/mips/Kconfig | 1 +
1 file changed, 1 insertion(+)

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 44a47ad..f65da197 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -9,6 +9,7 @@ config MIPS
select ARCH_HAS_PTE_SPECIAL if !(32BIT && CPU_HAS_RIXI)
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_HAS_UBSAN_SANITIZE_ALL
+ select ARCH_KEEP_MEMBLOCK
select ARCH_SUPPORTS_UPROBES
select ARCH_USE_BUILTIN_BSWAP
select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
--
2.1.0