Re: [tip:perf/core] perf/x86/intel: Disable userspace RDPMC usage for large PEBS

[Liang, Kan]

On 3/9/2018 12:42 PM, Peter Zijlstra wrote:
> On Fri, Mar 09, 2018 at 09:31:11AM -0500, Vince Weaver wrote:
> > On Fri, 9 Mar 2018, tip-bot for Kan Liang wrote:
> >
> > > Commit-ID:  1af22eba248efe2de25658041a80a3d40fb3e92e
> > > Gitweb:     https://git.kernel.org/tip/1af22eba248efe2de25658041a80a3d40fb3e92e
> > > Author:     Kan Liang <kan.liang@xxxxxxxxxxxxxxx>
> > > AuthorDate: Mon, 12 Feb 2018 14:20:35 -0800
> > > Committer:  Ingo Molnar <mingo@xxxxxxxxxx>
> > > CommitDate: Fri, 9 Mar 2018 08:22:23 +0100
> > >
> > > perf/x86/intel: Disable userspace RDPMC usage for large PEBS
> >
> >
> > So this whole commit log is about disabling RDPMC usage for "large PEBS"
> > but the actual change disables RDPMC if "PERF_X86_EVENT_FREERUNNING"
> >
> > Either the commit log is really misleading, or else a poor name was chosen
> > for this feature.
>
> Its the same thing, and yes that might want renaming I suppose.

Yes, I will send a patch to rename the "FREERUNNING" to "LARGE_PEBS", 
and fix the confusion.

Thanks,
Kan