linux-kernel - Re: [PATCH] LoongArch: Select HAVE_DEBUG

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Date:   Tue, 9 May 2023 15:13:26 +0800
From:   Youling Tang <tangyouling@...ngson.cn>
To:     Tiezhu Yang <yangtiezhu@...ngson.cn>,
        Catalin Marinas <catalin.marinas@....com>
Cc:     Huacai Chen <chenhuacai@...nel.org>,
        WANG Xuerui <kernel@...0n.name>, loongarch@...ts.linux.dev,
        linux-kernel@...r.kernel.org, loongson-kernel@...ts.loongnix.cn
Subject: Re: [PATCH] LoongArch: Select HAVE_DEBUG_KMEMLEAK to support kmemleak

Hi, Tiezhu

On 05/09/2023 02:49 PM, Tiezhu Yang wrote:
> We can see that DEBUG_KMEMLEAK depends on HAVE_DEBUG_KMEMLEAK after
> commit b69ec42b1b19 ("Kconfig: clean up the long arch list for the
> DEBUG_KMEMLEAK config option"), just select HAVE_DEBUG_KMEMLEAK to
> support kmemleak on LoongArch.
>
> Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
> ---
>
> This is based on 6.4-rc1
>
>  arch/loongarch/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig
> index d38b066..1e64edd 100644
> --- a/arch/loongarch/Kconfig
> +++ b/arch/loongarch/Kconfig
> @@ -90,6 +90,7 @@ config LOONGARCH
>  	select HAVE_ASM_MODVERSIONS
>  	select HAVE_CONTEXT_TRACKING_USER
>  	select HAVE_C_RECORDMCOUNT
> +	select HAVE_DEBUG_KMEMLEAK
>  	select HAVE_DEBUG_STACKOVERFLOW
>  	select HAVE_DMA_CONTIGUOUS
>  	select HAVE_DYNAMIC_FTRACE
>

At the same time, you need to modify the loongarch in arch-support.txt
to ok.

BTW, we can submit a separate patch to modify the features already
supported by LoongArch.

The following features are already supported in LoongArch.

diff --git 
a/Documentation/features/debug/kprobes-on-ftrace/arch-support.txt 
b/Documentation/features/debug/kprobes-on-ftrace/arch-support.txt
index bcc29d3aba9a..38a0a54b79f5 100644
--- a/Documentation/features/debug/kprobes-on-ftrace/arch-support.txt
+++ b/Documentation/features/debug/kprobes-on-ftrace/arch-support.txt
@@ -13,7 +13,7 @@
      |        csky: |  ok  |
      |     hexagon: | TODO |
      |        ia64: | TODO |
-    |   loongarch: | TODO |
+    |   loongarch: |  ok  |
      |        m68k: | TODO |
      |  microblaze: | TODO |
      |        mips: | TODO |
diff --git a/Documentation/features/debug/kprobes/arch-support.txt 
b/Documentation/features/debug/kprobes/arch-support.txt
index 8a77d62a42c5..aad83b57587a 100644
--- a/Documentation/features/debug/kprobes/arch-support.txt
+++ b/Documentation/features/debug/kprobes/arch-support.txt
@@ -13,7 +13,7 @@
      |        csky: |  ok  |
      |     hexagon: | TODO |
      |        ia64: |  ok  |
-    |   loongarch: | TODO |
+    |   loongarch: |  ok  |
      |        m68k: | TODO |
      |  microblaze: | TODO |
      |        mips: |  ok  |
diff --git a/Documentation/features/debug/kretprobes/arch-support.txt 
b/Documentation/features/debug/kretprobes/arch-support.txt
index cf4723c5ac55..61380010a4a7 100644
--- a/Documentation/features/debug/kretprobes/arch-support.txt
+++ b/Documentation/features/debug/kretprobes/arch-support.txt
@@ -13,7 +13,7 @@
      |        csky: |  ok  |
      |     hexagon: | TODO |
      |        ia64: |  ok  |
-    |   loongarch: | TODO |
+    |   loongarch: |  ok  |
      |        m68k: | TODO |
      |  microblaze: | TODO |
      |        mips: |  ok  |
diff --git 
a/Documentation/features/debug/stackprotector/arch-support.txt 
b/Documentation/features/debug/stackprotector/arch-support.txt
index 71cd4ba18f7d..4c64c5d596f7 100644
--- a/Documentation/features/debug/stackprotector/arch-support.txt
+++ b/Documentation/features/debug/stackprotector/arch-support.txt
@@ -13,7 +13,7 @@
      |        csky: |  ok  |
      |     hexagon: | TODO |
      |        ia64: | TODO |
-    |   loongarch: | TODO |
+    |   loongarch: |  ok  |
      |        m68k: | TODO |
      |  microblaze: | TODO |
      |        mips: |  ok  |

Thanks,
Youling.