Messages in this thread | | | Subject | Re: [PATCH] perf wrong branches event on AMD | From | Peter Zijlstra <> | Date | Fri, 02 Jul 2010 13:38:47 +0200 |
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On Thu, 2010-07-01 at 15:30 -0400, Vince Weaver wrote: > This is why event selection needs to be in user-space... it could be fixed > instantly there, but the way things are done now it will take months to > years for this fix to filter down to those trying to use perf counters...
Last time I checked apt-get upgrade/yum upgrade simply upgraded everything, including kernels.. (and upgrades to userspace packages can take months too)
Someone needs to build a new package and publish it, upgrading the kernel is no harder than upgrading any other.
If you don't want to reboot, there's the -r option Arnaldo already mentioned. There's also the option of writing a kernel module to poke at the data table if you really really want to update a running kernel.
If you think this is a really "important" feature you could even make a patch that exposes all these data tables to userspace through sysfs or whatever and see if people think its worth the effort.
Personally I don't think people will ever use such a sysfs interface, but hey, that's my opinion.
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