Messages in this thread |  | | From | Jacob Shin <> | Subject | [PATCH V6 0/6] perf, amd: Enable AMD family 15h northbridge counters | Date | Wed, 6 Feb 2013 11:26:23 -0600 |
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The following patchset enables 4 additional performance counters in AMD family 15h processors that count northbridge events -- such as number of DRAM accesses.
This patchset is based on previous work done by Robert Richter <rric@kernel.org> :
https://lkml.org/lkml/2012/6/19/324
The main differences are:
* The northbridge counters are indexed contiguously right above the core performance counters.
* MSR address offset calculations are moved to architecture specific files.
* Interrups are set up to be delivered only to a single core.
v6: Revised per feedback from Stephane Eranian. Updated to only allow counting mode on northbridge counters.
V5: Rebased against latest tip
V4: * Moved interrupt core select set up back to event constraints function, sicne during ->hw_config time we do not yet know on which CPU the the event will run on. * Tested on and made minor revisions to make sure that the patchset is compatible with upcoming AMD Family 16h processors, and will support core and NB counters without any further patches.
V3: Addressed the following feedback/comments from Robert's review * https://lkml.org/lkml/2012/11/16/484 * https://lkml.org/lkml/2012/11/26/162
V2: Separate out Robert's patches, and add properly ordered certificate of origins.
Jacob Shin (4): perf, amd: Use proper naming scheme for AMD bit field definitions perf, x86: Move MSR address offset calculation to architecture specific files perf, x86: Allow for architecture specific RDPMC indexes perf, amd: Enable northbridge performance counters on AMD family 15h
Robert Richter (2): perf, amd: Rework northbridge event constraints handler perf, amd: Generalize northbridge constraints code for family 15h
arch/x86/include/asm/cpufeature.h | 2 + arch/x86/include/asm/perf_event.h | 13 +- arch/x86/include/uapi/asm/msr-index.h | 2 + arch/x86/kernel/cpu/perf_event.c | 2 +- arch/x86/kernel/cpu/perf_event.h | 25 +-- arch/x86/kernel/cpu/perf_event_amd.c | 322 +++++++++++++++++++++++++-------- 6 files changed, 272 insertions(+), 94 deletions(-)
-- 1.7.9.5
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