linux-kernel - Re: [PATCH 2/4] LoongArch: Add kretprobe support

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Date:   Thu, 22 Sep 2022 20:24:30 +0800
From:   Tiezhu Yang <yangtiezhu@...ngson.cn>
To:     Jinyang He <hejinyang@...ngson.cn>,
        Huacai Chen <chenhuacai@...nel.org>,
        Masami Hiramatsu <mhiramat@...nel.org>
Cc:     loongarch@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/4] LoongArch: Add kretprobe support



On 09/21/2022 04:22 PM, Jinyang He wrote:
> On 09/20/2022 11:37 AM, Tiezhu Yang wrote:
>
>> Use the generic kretprobe trampoline handler to add kretprobe
>> support for LoongArch.
>>
>> Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
>> ---
>>   arch/loongarch/Kconfig          |  1 +
>>   arch/loongarch/kernel/kprobes.c | 49

...

>>   int __init arch_init_kprobes(void)
>>   {
>> -    return 0;
>> +    return register_kprobe(&trampoline_p);
> Hi, Tiezhu,
>
> For kretprobe, we can do things like arm64/riscv... did. It avoid
> the break exception when function return.
>

OK, looks reasonable, let me try, thank you.
I will wait for some more review comments and then send v2.

Thanks,
Tiezhu