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Date: Sun, 18 Oct 2015 12:24:17 -0600 From: Mathieu Poirier <mathieu.poirier@...aro.org> To: gregkh@...uxfoundation.org, a.p.zijlstra@...llo.nl, alexander.shishkin@...ux.intel.com, acme@...nel.org, mingo@...hat.com, corbet@....net, nicolas.pitre@...aro.org Cc: adrian.hunter@...el.com, zhang.chunyan@...aro.org, mike.leach@....com, tor@...com, al.grant@....com, pawel.moll@....com, linux-arm-kernel@...ts.infradead.org, linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org, mathieu.poirier@...aro.org Subject: [PATCH V2 00/30] Coresight integration with perf This patchset aims to integrate configuration and control of the Coresight tracers with the perf sub-system. The goal is to use PMUs to represent tracers and the auxiliary buffer enhancement to collect processor traces. As such a lot of work is done to move the current Coresight sysFS oriented configuration and control commands to perf's AUX API. For the time being the work concentrates on ETMv3 and ETB1.0 sink buffers. Work on ETMv4 and other type of sink buffers will follow once a foundation has been established. Best regards, Mathieu Changes since V1: * Fixed typos in typographical error in documentation. * Moved to a multi session support scheme. * Split static and dynamic tracer configuration. * Fixed configuration for user and kernel space tracing. * Using WARN_ON_ONCE() rather than WARN_ON(). * Implemented strategy to prevent tracers from being used simultaneously. * Changed sink_ops::unset_buffer() to sink_ops::reset_buffer(). * Moves ETM's sysFS interface from driver core to dedicated file. * Removed spinlock in "etm_cpu_id()". * Aggregated PMU driver pieces in a single patch. * Added user space changes and rebased everything to v4.3-rc5. Mathieu Poirier (30): coresight: etm3x: moving etm_readl/writel to header file coresight: etm3x: moving sysFS entries to dedicated file coresight: etm3x: unlocking tracers in default arch init coresight: etm3x: splitting struct etm_drvdata coresight: etm3x: set progbit to stop trace collection coresight: clearly labeling source operarions coresight: etm3x: moving etm_drvdata::enable to atomic field coresight: etm3x: implementing 'cpu_id()' API coresight: etm3x: changing default trace configuration coresight: etm3x: consolidating initial config coresight: etm3x: implementing user/kernel mode tracing coresight: etm3x: adding perf_get/set_config() API coresight: etm3x: implementing perf_enable/disable() API coresight: etm3x: implementing perf_start/stop() API coresight: making coresight_build_paths() public coresight: keeping track of enabled sink buffers perf: changing pmu::setup_aux() parameter to include event coresight: etb10: moving to local atomic operations coresight: etb10: implementing the setup_aux() API coresight: etb10: implementing buffer set/reset() API coresight: etb10: implementing buffer update API coresight: etm-perf: new PMU driver for ETM tracers coresight: updating documentation to reflect integration with perf perf tools: making function set_max_cpu_num() non static perf tools: adding perf_session to *info_prive_size() perf tools: making source devices path broadly accessible perf build: adding X86 auxiliary specific flags perf tools: making coresight PMU listable perf tools: adding coresight define for auxtrace perf tools: adding coresight etm PMU record capabilities Documentation/trace/coresight.txt | 138 +- arch/x86/kernel/cpu/perf_event_intel_bts.c | 4 +- arch/x86/kernel/cpu/perf_event_intel_pt.c | 5 +- drivers/hwtracing/coresight/Makefile | 4 +- drivers/hwtracing/coresight/coresight-etb10.c | 247 ++- drivers/hwtracing/coresight/coresight-etm-perf.c | 533 ++++++ drivers/hwtracing/coresight/coresight-etm-perf.h | 27 + drivers/hwtracing/coresight/coresight-etm.h | 151 +- .../hwtracing/coresight/coresight-etm3x-sysfs.c | 1442 ++++++++++++++++ drivers/hwtracing/coresight/coresight-etm3x.c | 1724 ++++---------------- drivers/hwtracing/coresight/coresight-etm4x.c | 8 +- drivers/hwtracing/coresight/coresight-priv.h | 4 + drivers/hwtracing/coresight/coresight.c | 27 +- include/linux/coresight.h | 51 +- include/linux/perf_event.h | 2 +- kernel/events/ring_buffer.c | 2 +- tools/perf/arch/arm/util/Build | 2 + tools/perf/arch/arm/util/auxtrace.c | 48 + tools/perf/arch/arm/util/cs_etm.c | 444 +++++ tools/perf/arch/arm/util/cs_etm.h | 37 + tools/perf/arch/arm/util/pmu.c | 18 + tools/perf/arch/x86/util/Build | 6 +- tools/perf/arch/x86/util/intel-bts.c | 4 +- tools/perf/arch/x86/util/intel-pt.c | 4 +- tools/perf/arch/x86/util/pmu.c | 2 +- tools/perf/builtin-inject.c | 2 +- tools/perf/builtin-record.c | 2 +- tools/perf/config/Makefile | 19 +- tools/perf/util/Build | 6 +- tools/perf/util/auxtrace.c | 8 +- tools/perf/util/auxtrace.h | 9 +- tools/perf/util/cpumap.c | 2 +- tools/perf/util/cpumap.h | 1 + tools/perf/util/intel-bts.h | 11 + tools/perf/util/intel-pt-decoder/Build | 2 +- tools/perf/util/intel-pt.h | 15 + tools/perf/util/pmu.c | 2 - tools/perf/util/pmu.h | 1 + 38 files changed, 3531 insertions(+), 1483 deletions(-) create mode 100644 drivers/hwtracing/coresight/coresight-etm-perf.c create mode 100644 drivers/hwtracing/coresight/coresight-etm-perf.h create mode 100644 drivers/hwtracing/coresight/coresight-etm3x-sysfs.c create mode 100644 tools/perf/arch/arm/util/auxtrace.c create mode 100644 tools/perf/arch/arm/util/cs_etm.c create mode 100644 tools/perf/arch/arm/util/cs_etm.h create mode 100644 tools/perf/arch/arm/util/pmu.c -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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