linux-kernel - [PATCH 1/1] riscv: select CONFIG_ARCH_KEEP

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Message-Id: <20210816144728.1425121-1-heinrich.schuchardt@canonical.com>
Date:   Mon, 16 Aug 2021 16:47:28 +0200
From:   Heinrich Schuchardt <heinrich.schuchardt@...onical.com>
To:     Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>
Cc:     linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Heinrich Schuchardt <heinrich.schuchardt@...onical.com>
Subject: [PATCH 1/1] riscv: select CONFIG_ARCH_KEEP_MEMBLOCK

For analyzing memory blocks we can either use the memblock=debug command
line argument which creates massive output or a debug file system.

Select CONFIG_ARCH_KEEP_MEMBLOCK to provide a debugfs at
/sys/kernel/debug/memblock to analyze memory blocks. The
same is already done for arm, arm64, mips, powerpc.

The actual provisioning of the file system depends on CONFIG_DEBUG_FS.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@...onical.com>
---
 arch/riscv/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 4f7b70ae7c31..a6e57614c3fd 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -31,6 +31,7 @@ config RISCV
 	select ARCH_HAS_STRICT_KERNEL_RWX if MMU && !XIP_KERNEL
 	select ARCH_HAS_STRICT_MODULE_RWX if MMU && !XIP_KERNEL
 	select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
+	select ARCH_KEEP_MEMBLOCK
 	select ARCH_OPTIONAL_KERNEL_RWX if ARCH_HAS_STRICT_KERNEL_RWX
 	select ARCH_OPTIONAL_KERNEL_RWX_DEFAULT
 	select ARCH_SUPPORTS_HUGETLBFS if MMU
-- 
2.30.2