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 10:02:59 -0500
- Cc: Alexei Starovoitov <alexei.starovoitov@xxxxxxxxx>, Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx>, linux-kernel <linux-kernel@xxxxxxxxxxxxxxx>, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Peter Zijlstra <peterz@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>
- In-reply-to: <CAM9d7cgmWmo6S30fLg6Zdk5ic8a3UJOjYSo3C55CcG=NBz6mhQ@mail.gmail.com>
- References: <20180202230458.840252014@goodmis.org> <261141691.15507.1517677454208.JavaMail.zimbra@efficios.com> <20180203140217.2382df69@gandalf.local.home> <20180203205207.mpob4w6eyehhg2ky@ast-mbp> <20180203161732.4a65c66b@gandalf.local.home> <CAM9d7cgmWmo6S30fLg6Zdk5ic8a3UJOjYSo3C55CcG=NBz6mhQ@mail.gmail.com>
On Sun, 4 Feb 2018 11:25:20 +0900
Namhyung Kim <namhyung@xxxxxxxxxx> wrote:
> I'm interested in this. From my understanding, it's basically
> function tracing + filter + custom argument info, right?
>
> Supporting arguments with complex type could be error-prone.
> We need to prevent malfunctions by invalid inputs.
All reads are done with probe_kernel_read(). If it faults (at any
stage), it simply returns "0".
-- Steve
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