Messages in this thread | | | Date | Thu, 18 Dec 2014 07:59:46 +0000 | From | Matt Fleming <> | Subject | Re: [PATCH v4 00/11] perf: Intel Cache QoS Monitoring support |
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On Tue, 25 Nov, at 02:55:09PM, Matt Fleming wrote: > On Fri, 14 Nov, at 09:15:01PM, Matt Fleming wrote: > > From: Matt Fleming <matt.fleming@intel.com> > > > > This patch series adds a new PMU driver for the Intel Cache Monitoring > > hardware feature available in Intel Xeon processors, which allows > > monitoring of LLC occupancy on a task, group or system-wide basis. > > > > The first few patches modify tools/perf to handle per-package counters, > > which necessitates discarding some values when doing per-cpu reads to > > avoid getting duplicate data. The rest add support for the new PMU code. > > > > I've left a notoriously funky bit of code near the end of the series, > > the RMID rotation code, in an attempt to simplify things. Doing the > > rotation provides the ability to multiplex the RMIDs and basically > > overcome the hardware limitation, but the rest of the patches work fine > > without it. But there are a number of scenarios where being able to > > monitor more tasks than RMIDs is extremely useful. > > > > The series is based on tip/perf/core. > > Any feedback on this series? > > Stephane, the original thread is here, > > https://lkml.kernel.org/r/1415999712-5850-1-git-send-email-matt@console-pimps.org
Ping.
-- Matt Fleming, Intel Open Source Technology Center
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