From: Anton Blanchard <anton@samba.org>
To: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Steven Rostedt <rostedt@goodmis.org>,
Paul Mackerras <paulus@samba.org>,
linux-kernel@vger.kernel.org
Subject: Re: TRACE_EVENT() declarations belong to include/trace/
Date: Tue, 13 Apr 2010 09:24:56 +1000 [thread overview]
Message-ID: <20100412232456.GI11751@kryten> (raw)
In-Reply-To: <20100412220451.GG8285@nowhere>
Hi Frederic,
> If this is to trace all irqs, then it seems to me the wrong way.
> We already have generic irq_handler_entry and irq_handler_exit trace events.
>
> May be those in powerpc are here to get the spurious irqs by computing
> a diff between generic and arch irq events? In which case
> it would be better to get dedicated spurious irq tracepoints.
The number of spurious irqs are not interesting - we track them in
/proc/interrupts. The duration of the disturbances are, and they were big
enough for people to see them in certain HPC loops.
Anton
prev parent reply other threads:[~2010-04-12 23:25 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-12 21:45 TRACE_EVENT() declarations belong to include/trace/ Mathieu Desnoyers
2010-04-12 22:01 ` Steven Rostedt
2010-04-12 22:04 ` Frederic Weisbecker
2010-04-12 22:17 ` Mathieu Desnoyers
2010-04-12 23:17 ` Anton Blanchard
2010-04-13 0:27 ` Mathieu Desnoyers
2010-04-12 23:24 ` Anton Blanchard [this message]
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