Re: [PATCH 00/18] [ANNOUNCE] Dynamically created function based events
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- Subject: Re: [PATCH 00/18] [ANNOUNCE] Dynamically created function based events
- From: Steven Rostedt <rostedt@xxxxxxxxxxx>
- Date: Mon, 5 Feb 2018 10:10:11 -0500
- Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx>, linux-kernel <linux-kernel@xxxxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Masami Hiramatsu <mhiramat@xxxxxxxxxx>, Tom Zanussi <tom.zanussi@xxxxxxxxxxxxxxx>, linux-rt-users <linux-rt-users@xxxxxxxxxxxxxxx>, linux-trace-users <linux-trace-users@xxxxxxxxxxxxxxx>, acme <acme@xxxxxxxxxx>, Clark Williams <williams@xxxxxxxxxx>, Jiri Olsa <jolsa@xxxxxxxxxx>, bristot <bristot@xxxxxxxxxx>, Juri Lelli <juri.lelli@xxxxxxxxxx>, Jonathan Corbet <corbet@xxxxxxx>, Namhyung Kim <namhyung@xxxxxxxxxx>, Alexei Starovoitov <alexei.starovoitov@xxxxxxxxx>
- In-reply-to: <20180205100930.GH2249@hirez.programming.kicks-ass.net>
- References: <20180202230458.840252014@goodmis.org> <261141691.15507.1517677454208.JavaMail.zimbra@efficios.com> <CA+55aFz1=qWvnJ2271SGwuezwQRBA2nZp8_BxFyR-R0VKKgXRw@mail.gmail.com> <292744194.15823.1517758204087.JavaMail.zimbra@efficios.com> <CA+55aFwtCP3Nf86jwNFzdRy_m0GZWH5U2KBDutPDh1ZVATHLYg@mail.gmail.com> <20180205100930.GH2249@hirez.programming.kicks-ass.net>
On Mon, 5 Feb 2018 11:09:31 +0100
Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
> As a run-around, Steve then suggested to decouple the trace-hook from
> the actual trace-event. Let the scheduler only provide the hook, nothing
> else. And then allow users to create their own events with the specific
> data they need for their specific use-case.
Actually, we can make the raw tracepoint callback no longer 'notrace',
and then we can extend all tracepoints as well with this.
One issue I hit was the structure randomization for security. If the
structures are randomized, it becomes much more difficult to find
specific aspects of task_struct.
-- Steve
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