Messages in this thread |  | | From | Matt Fleming <> | Subject | [PATCH 00/11] perf: Intel Cache QoS Monitoring support | Date | Wed, 24 Sep 2014 15:04:04 +0100 |
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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 as the last patch, 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.
Matt Fleming (10): perf stat: Fix AGGR_CORE segfault on multi-socket system perf tools: Refactor unit and scale function parameters perf tools: Parse event per-package info files perf: Make perf_cgroup_from_task() global perf: Add ->count() function to read per-package counters perf: Move cgroup init before PMU ->event_init() perf/x86/intel: Add Intel Cache QoS Monitoring support perf/x86/intel: Implement LRU monitoring ID allocation for CQM perf/x86/intel: Support task events with Intel CQM perf/x86/intel: Perform rotation on Intel CQM RMIDs
Peter P Waskiewicz Jr (1): x86: Add support for Intel Cache QoS Monitoring (CQM) detection
arch/x86/include/asm/cpufeature.h | 9 +- arch/x86/include/asm/processor.h | 3 + arch/x86/kernel/cpu/Makefile | 2 +- arch/x86/kernel/cpu/common.c | 39 + arch/x86/kernel/cpu/perf_event_intel_cqm.c | 1159 ++++++++++++++++++++++++++++ include/linux/perf_event.h | 48 ++ include/uapi/linux/perf_event.h | 1 + kernel/events/core.c | 63 +- tools/perf/builtin-stat.c | 81 +- tools/perf/util/evsel.c | 6 +- tools/perf/util/evsel.h | 8 +- tools/perf/util/parse-events.c | 10 +- tools/perf/util/pmu.c | 66 +- tools/perf/util/pmu.h | 8 +- 14 files changed, 1434 insertions(+), 69 deletions(-) create mode 100644 arch/x86/kernel/cpu/perf_event_intel_cqm.c
-- 1.9.3
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