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Date: Wed, 14 Dec 2011 21:23:49 -0500 From: Seiji Aguchi <seiji.aguchi@....com> To: Steven Rostedt <rostedt@...dmis.org> CC: Frederic Weisbecker <fweisbec@...il.com>, Vaibhav Nagarnaik <vnagarnaik@...gle.com>, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Peter Zijlstra <a.p.zijlstra@...llo.nl>, Michael Rubin <mrubin@...gle.com>, David Sharp <dhsharp@...gle.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "x86@...nel.org" <x86@...nel.org>, Satoru Moriya <satoru.moriya@....com> Subject: RE: [PATCH 2/2] trace,x86: Add x86 irq vector entry/exit tracepoints Steven, Thank you for giving me an explanation in detail how stacktrace works. I was confused stacktrace. >> Rip in local timer interrupt is more accurate information >> for achieving my goal than stacktrace > >Does the above change your mind? I'm concerned about amount of consumption of ring buffer because I would like to use a background tracer for multiple cases in our costomer's system for solving several issues. As you know, I'm trying to improve tracepoints of signal events with others. https://lkml.org/lkml/2011/11/30/223 And I'm posting a patch of jbd2 event by myself. https://lkml.org/lkml/2011/11/29/328 How much does stacktrace consume ring buffer, compared to a tracepoint? Seiji -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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