From: Tiezhu Yang Date: Mon, 7 Dec 2020 12:21:42 +0000 (+0800) Subject: MIPS: Select ARCH_KEEP_MEMBLOCK if DEBUG_KERNEL to enable sysfs memblock debug X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=a8c0f1c634507a36ef87a23cfd93720f6142ad9a;p=linux.git MIPS: Select ARCH_KEEP_MEMBLOCK if DEBUG_KERNEL to enable sysfs memblock debug 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 if DEBUG_KERNEL 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 Signed-off-by: Thomas Bogendoerfer --- diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index b49a390df1cb7..85c7b0637734a 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -10,6 +10,7 @@ config MIPS select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST select ARCH_HAS_UBSAN_SANITIZE_ALL select ARCH_HAS_GCOV_PROFILE_ALL + select ARCH_KEEP_MEMBLOCK if DEBUG_KERNEL select ARCH_SUPPORTS_UPROBES select ARCH_USE_BUILTIN_BSWAP select ARCH_USE_CMPXCHG_LOCKREF if 64BIT