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Date: Tue, 22 Apr 2014 10:38:54 -0700 From: Drew Richardson <drew.richardson@....com> To: Josh Boyer <jwboyer@...oraproject.org> Cc: Christoph Hellwig <hch@...radead.org>, Thomas Gleixner <tglx@...utronix.de>, Frederic Weisbecker <fweisbec@...il.com>, Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...nel.org>, Andrew Morton <akpm@...ux-foundation.org>, Joe Perches <joe@...ches.com>, Ben Greear <greearb@...delatech.com>, "Linux-Kernel@...r. Kernel. Org" <linux-kernel@...r.kernel.org>, Pawel Moll <Pawel.Moll@....com>, "mathieu.desnoyers@...icios.com" <mathieu.desnoyers@...icios.com> Subject: Re: [PATCH] Export irq tracepoints for use by kernel modules On Tue, Apr 22, 2014 at 04:01:03PM +0100, Josh Boyer wrote: > On Tue, Apr 22, 2014 at 10:26 AM, Christoph Hellwig <hch@...radead.org> wrote: > > On Tue, Apr 22, 2014 at 07:24:20AM -0700, Drew Richardson wrote: > >> After commit de7b2973903c6cc50b31ee5682a69b2219b9919d ("tracepoint: > >> Use struct pointer instead of name hash for reg/unreg tracepoints"), > >> any tracepoints used in a kernel module must be exported. > > > > How does this matter given that there aren't any modular users? > > We had a bug report about this breaking systemtap type usage[1]. In > there, Matthieu suggested that the new for_each_kernel_tracepoint > interface be used. > > Drew, it would have been proper to CC the author of the change you're > referencing on all of your patches to export these symbols. > > josh > > [1] https://bugzilla.redhat.com/show_bug.cgi?id=1087623 > Thanks Josh for pointing out that I should CC Mathieu and register_tracepoint_module_notifier, which will work for me. Drew -- 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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