Re: [PATCH 09/11] perf/x86/intel: Implement LRU monitoring ID allocation for CQM

2014-10-08 Thread Matt Fleming
On Wed, 08 Oct, at 11:51:09AM, Peter Zijlstra wrote: > On Wed, Sep 24, 2014 at 03:04:13PM +0100, Matt Fleming wrote: > > From: Matt Fleming > > > > It's possible to run into issues with re-using unused monitoring IDs > > because there may be stale cachelines associated with that ID from a > >

Re: [PATCH 09/11] perf/x86/intel: Implement LRU monitoring ID allocation for CQM

2014-10-08 Thread Peter Zijlstra
On Wed, Sep 24, 2014 at 03:04:13PM +0100, Matt Fleming wrote: > From: Matt Fleming > > It's possible to run into issues with re-using unused monitoring IDs > because there may be stale cachelines associated with that ID from a > previous allocation. This can cause the LLC occupancy values to be

Re: [PATCH 09/11] perf/x86/intel: Implement LRU monitoring ID allocation for CQM

2014-10-08 Thread Peter Zijlstra
On Wed, Sep 24, 2014 at 03:04:13PM +0100, Matt Fleming wrote: From: Matt Fleming matt.flem...@intel.com It's possible to run into issues with re-using unused monitoring IDs because there may be stale cachelines associated with that ID from a previous allocation. This can cause the LLC

Re: [PATCH 09/11] perf/x86/intel: Implement LRU monitoring ID allocation for CQM

2014-10-08 Thread Matt Fleming
On Wed, 08 Oct, at 11:51:09AM, Peter Zijlstra wrote: On Wed, Sep 24, 2014 at 03:04:13PM +0100, Matt Fleming wrote: From: Matt Fleming matt.flem...@intel.com It's possible to run into issues with re-using unused monitoring IDs because there may be stale cachelines associated with that ID

[PATCH 09/11] perf/x86/intel: Implement LRU monitoring ID allocation for CQM

2014-10-01 Thread Matt Fleming
From: Matt Fleming It's possible to run into issues with re-using unused monitoring IDs because there may be stale cachelines associated with that ID from a previous allocation. This can cause the LLC occupancy values to be inaccurate. To attempt to mitigate this problem we place the IDs on a

[PATCH 09/11] perf/x86/intel: Implement LRU monitoring ID allocation for CQM

2014-10-01 Thread Matt Fleming
From: Matt Fleming matt.flem...@intel.com It's possible to run into issues with re-using unused monitoring IDs because there may be stale cachelines associated with that ID from a previous allocation. This can cause the LLC occupancy values to be inaccurate. To attempt to mitigate this problem

[PATCH 09/11] perf/x86/intel: Implement LRU monitoring ID allocation for CQM

2014-09-24 Thread Matt Fleming
From: Matt Fleming It's possible to run into issues with re-using unused monitoring IDs because there may be stale cachelines associated with that ID from a previous allocation. This can cause the LLC occupancy values to be inaccurate. To attempt to mitigate this problem we place the IDs on a

[PATCH 09/11] perf/x86/intel: Implement LRU monitoring ID allocation for CQM

2014-09-24 Thread Matt Fleming
From: Matt Fleming matt.flem...@intel.com It's possible to run into issues with re-using unused monitoring IDs because there may be stale cachelines associated with that ID from a previous allocation. This can cause the LLC occupancy values to be inaccurate. To attempt to mitigate this problem