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Subject: Re: [PATCH v2] riscv,
 bpf: Adapt bpf trampoline to optimized riscv ftrace framework
From:   patchwork-bot+netdevbpf@kernel.org
Message-Id: <169101062152.23031.14952859291909120655.git-patchwork-notify@kernel.org>
Date:   Wed, 02 Aug 2023 21:10:21 +0000
References: <20230721100627.2630326-1-pulehui@huaweicloud.com>
In-Reply-To: <20230721100627.2630326-1-pulehui@huaweicloud.com>
To:     Pu Lehui <pulehui@huaweicloud.com>
Cc:     linux-riscv@lists.infradead.org, bpf@vger.kernel.org,
        netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
        bjorn@kernel.org, palmer@dabbelt.com, ast@kernel.org,
        daniel@iogearbox.net, andrii@kernel.org, martin.lau@linux.dev,
        song@kernel.org, yhs@fb.com, john.fastabend@gmail.com,
        kpsingh@kernel.org, sdf@google.com, haoluo@google.com,
        jolsa@kernel.org, guoren@kernel.org, suagrfillet@gmail.com,
        pulehui@huawei.com
Precedence: bulk

Hello:

This patch was applied to bpf/bpf-next.git (master)
by Alexei Starovoitov <ast@kernel.org>:

On Fri, 21 Jul 2023 18:06:27 +0800 you wrote:
> From: Pu Lehui <pulehui@huawei.com>
> 
> Commit 6724a76cff85 ("riscv: ftrace: Reduce the detour code size to
> half") optimizes the detour code size of kernel functions to half with
> T0 register and the upcoming DYNAMIC_FTRACE_WITH_DIRECT_CALLS of riscv
> is based on this optimization, we need to adapt riscv bpf trampoline
> based on this. One thing to do is to reduce detour code size of bpf
> programs, and the second is to deal with the return address after the
> execution of bpf trampoline. Meanwhile, we need to construct the frame
> of parent function, otherwise we will miss one layer when unwinding.
> The related tests have passed.
> 
> [...]

Here is the summary with links:
  - [v2] riscv, bpf: Adapt bpf trampoline to optimized riscv ftrace framework
    https://git.kernel.org/bpf/bpf-next/c/25ad10658dc1

You are awesome, thank you!
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