linux-kernel - Re: [PATCH v12 3/3] tracing: Centralize preemptirq tracepoints and unify their usage

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Message-ID: <6B9E5DC9-0859-41B4-9B72-A7D85E9EA2AD@google.com>
Date:   Tue, 07 Aug 2018 11:24:13 -0400
From:   Joel Fernandes <joelaf@...gle.com>
To:     Steven Rostedt <rostedt@...dmis.org>
CC:     Joel Fernandes <joel@...lfernandes.org>,
        LKML <linux-kernel@...r.kernel.org>,
        "Cc: Android Kernel" <kernel-team@...roid.com>,
        Boqun Feng <boqun.feng@...il.com>,
        Byungchul Park <byungchul.park@....com>,
        Ingo Molnar <mingo@...hat.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Paul McKenney <paulmck@...ux.vnet.ibm.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Glexiner <tglx@...utronix.de>,
        Tom Zanussi <tom.zanussi@...ux.intel.com>
Subject: Re: [PATCH v12 3/3] tracing: Centralize preemptirq tracepoints and unify their usage



On August 7, 2018 11:09:06 AM EDT, Steven Rostedt <rostedt@...dmis.org> wrote:
>On Tue, 07 Aug 2018 10:48:05 -0400
>Joel Fernandes <joelaf@...gle.com> wrote:
>
>> >You mean if someone add a tracepoint callback to the irq disable
>> >tracepoint, and did a lockdep assert to make sure interrupts are
>> >disabled?  
>> 
>> Yes that's what I meant.
>
>That sounds like a "Doctor, it hurts me when I do this" problem ;-)

Haha, yes true. But just to clarify, I didn't do this to see the problem but noticed it with turning on existing things. :-) but I see your point...

Thanks,

- Joel

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