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Date: Sat, 1 Jun 2024 23:44:03 -0400
From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>, Mark Rutland
 <mark.rutland@arm.com>, Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
 Andrew Morton <akpm@linux-foundation.org>, Alexei Starovoitov
 <alexei.starovoitov@gmail.com>, Florent Revest <revest@chromium.org>,
 Martin KaFai Lau <martin.lau@linux.dev>, bpf <bpf@vger.kernel.org>, Sven
 Schnelle <svens@linux.ibm.com>, Alexei Starovoitov <ast@kernel.org>, Jiri
 Olsa <jolsa@kernel.org>, Arnaldo Carvalho de Melo <acme@kernel.org>, Daniel
 Borkmann <daniel@iogearbox.net>, Alan Maguire <alan.maguire@oracle.com>,
 Peter Zijlstra <peterz@infradead.org>, Thomas Gleixner
 <tglx@linutronix.de>, Guo Ren <guoren@kernel.org>
Subject: Re: [PATCH v2 00/27] function_graph: Allow multiple users for
 function graph tracing
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On Sat, 01 Jun 2024 23:37:44 -0400
Steven Rostedt <rostedt@goodmis.org> wrote:

> hanges since v1: https://lore.kernel.org/linux-trace-kernel/20240525023652.903909489@goodmis.org/
> 
> - Added ftrace helpers to allow an ftrace_ops to be a subop of a
>   managing ftrace_op. That is, the managing ftrace_op will enable
>   functions based off of the filters of the subops beneath it.
>   This could be extended for kprobes and fprobes, as the managing
>   ops does the multiplexing for the subops. This allows for only
>   adding a single callback to ftrace but have multiple ops that
>   represent many users.
> 
> - At the end, I added static branch which also speeds up the
>   code quite a bit.

Also added:

- A couple of kselftests.

-- Steve