[ltt-dev] A problem in net instrumentation code of lttng-0.64
Neil Horman
nhorman at tuxdriver.com
Tue Dec 9 15:38:18 EST 2008
On Tue, Dec 09, 2008 at 11:07:30AM -0500, Mathieu Desnoyers wrote:
> * Sunzen Wang (sunzen at gmail.com) wrote:
> > Hi Mathieu,
> >
> > I found a strange problem in net instrumentation code while scanning
> > lttng instrumentation code via gitweb, and would like to inform you
> > with the attached patch.
> >
> > Is it ok? If you have noticed it, just ignore it. If it is a not
> > problem, please teach me.
> >
> > Thanks,
>
> Hi Suzen,
>
> Yes, the problem you identified must be fixed. I'll apply your patch
> into the next LTTng release.
>
> Mathieu
>
> (your patch pasted here)
>
Apologies. That was a finger check on my part. I must have posted an unfixed
version of my patch rather than extracting from my git tree right before
posting. I'll double check that in the future.
Neil
>
> diff -Naru linux-2.6.27.8-lttng-0.64/net/core/dev.c linux-2.6.27.8-lttng-new/net/core/dev.c
> --- linux-2.6.27.8-lttng-0.64/net/core/dev.c 2008-12-09 14:51:16.972757754 +0800
> +++ linux-2.6.27.8-lttng-new/net/core/dev.c 2008-12-09 14:54:00.636758086 +0800
> @@ -2336,7 +2336,7 @@
> {
> unsigned long flags;
>
> - trace_net_napi_poll(n);
> + trace_net_napi_schedule(n);
>
> local_irq_save(flags);
> list_add_tail(&n->poll_list, &__get_cpu_var(softnet_data).poll_list);
> --
> Mathieu Desnoyers
> OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
>
--
/****************************************************
* Neil Horman <nhorman at tuxdriver.com>
* Software Engineer, Red Hat
****************************************************/
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