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From:   =?utf-8?B?QmrDtnJuIFTDtnBlbA==?= <bjorn@kernel.org>
To:     Alexandre Ghiti <alexghiti@rivosinc.com>,
        Steven Rostedt <rostedt@goodmis.org>,
        Masami Hiramatsu <mhiramat@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Palmer Dabbelt <palmer@dabbelt.com>,
        Albert Ou <aou@eecs.berkeley.edu>,
        Sami Tolvanen <samitolvanen@google.com>,
        Kees Cook <keescook@chromium.org>,
        linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
        linux-riscv@lists.infradead.org
Cc:     Alexandre Ghiti <alexghiti@rivosinc.com>
Subject: Re: [PATCH -fixes] riscv: Fix ftrace syscall handling which are now
 prefixed with __riscv_
In-Reply-To: <20231003182407.32198-1-alexghiti@rivosinc.com>
References: <20231003182407.32198-1-alexghiti@rivosinc.com>
Date:   Wed, 04 Oct 2023 07:55:50 +0200
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Alexandre Ghiti <alexghiti@rivosinc.com> writes:

> ftrace creates entries for each syscall in the tracefs but has failed
> since commit 08d0ce30e0e4 ("riscv: Implement syscall wrappers") which
> prefixes all riscv syscalls with __riscv_.
>
> So fix this by implementing arch_syscall_match_sym_name() which allows us
> to ignore this prefix.
>
> And also ignore compat syscalls like x86/arm64 by implementing
> arch_trace_is_compat_syscall().
>
> Fixes: 08d0ce30e0e4 ("riscv: Implement syscall wrappers")
> Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>

This fix does the BPF test suite happier!

Tested-by: Bj=C3=B6rn T=C3=B6pel <bjorn@rivosinc.com>