linux-kernel - Re: [PATCH] powerpc/ftrace: fix syscall tracing on PPC64_ELF_ABI

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Date:   Thu, 08 Dec 2022 23:40:10 +1100
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     Steven Rostedt <rostedt@...dmis.org>,
        Michael Jeanson <mjeanson@...icios.com>
Cc:     Nicholas Piggin <npiggin@...il.com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Michael Ellerman <mpe@...erman.id.au>,
        Masami Hiramatsu <mhiramat@...nel.org>, stable@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Mark Rutland <mark.rutland@....com>,
        Michal Suchanek <msuchanek@...e.de>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] powerpc/ftrace: fix syscall tracing on PPC64_ELF_ABI_V1

On Thu, 1 Dec 2022 11:14:42 -0500, Michael Jeanson wrote:
> In v5.7 the powerpc syscall entry/exit logic was rewritten in C, on
> PPC64_ELF_ABI_V1 this resulted in the symbols in the syscall table
> changing from their dot prefixed variant to the non-prefixed ones.
> 
> Since ftrace prefixes a dot to the syscall names when matching them to
> build its syscall event list, this resulted in no syscall events being
> available.
> 
> [...]

Applied to powerpc/next.

[1/1] powerpc/ftrace: fix syscall tracing on PPC64_ELF_ABI_V1
      https://git.kernel.org/powerpc/c/ad050d2390fccb22aa3e6f65e11757ce7a5a7ca5

cheers