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 <r...@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. 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/msr-index.h | 2 + arch/x86/include/asm/perf_event.h | 13 +- arch/x86/kernel/cpu/perf_event.c | 2 +- arch/x86/kernel/cpu/perf_event.h | 25 ++- arch/x86/kernel/cpu/perf_event_amd.c | 318 ++++++++++++++++++++++++++-------- 6 files changed, 268 insertions(+), 94 deletions(-) -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
