From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e8.ny.us.ibm.com (e8.ny.us.ibm.com [32.97.182.138]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 2E97C1A198D for ; Fri, 15 Aug 2014 17:26:32 +1000 (EST) Received: from /spool/local by e8.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 15 Aug 2014 03:26:28 -0400 Received: from b01cxnp22036.gho.pok.ibm.com (b01cxnp22036.gho.pok.ibm.com [9.57.198.26]) by d01dlp01.pok.ibm.com (Postfix) with ESMTP id E125B38C8039 for ; Fri, 15 Aug 2014 03:26:25 -0400 (EDT) Received: from d01av01.pok.ibm.com (d01av01.pok.ibm.com [9.56.224.215]) by b01cxnp22036.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id s7F7QPVO9634128 for ; Fri, 15 Aug 2014 07:26:25 GMT Received: from d01av01.pok.ibm.com (localhost [127.0.0.1]) by d01av01.pok.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id s7F7QOcb026885 for ; Fri, 15 Aug 2014 03:26:25 -0400 From: Sukadev Bhattiprolu To: Arnaldo Carvalho de Melo , ak@linux.intel.com, Jiri Olsa , peterz@infradead.org, eranian@google.com Subject: [PATCH v2 00/14] Add support for parameterized events from sysfs Date: Fri, 15 Aug 2014 00:26:09 -0700 Message-Id: <1408087583-32239-1-git-send-email-sukadev@linux.vnet.ibm.com> Cc: linuxppc-dev@lists.ozlabs.org, dev@codyps.com, linux-kernel@vger.kernel.org, Michael Ellerman , Anshuman Khandual List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Cody P Schafer What this patchset does: - the first patch (override sysfs in tools/perf via SYSFS_PATH) was sent out previously, but needed a resend anyhow. Having it is useful for testing the later changes to tools/perf. - the second patch is a bugfix to the powerpc hv-24x7 code which was previously sent out, which is a good idea to have when testing these patches on POWER8 hardware. - document perf sysfs and the changes to add parameterized events - semi-notably: removes the growing list of specific POWER cpu events and begins documenting them generically, much like the docs for /sys/modules/MODULENAME do for modules. - tools/perf changes to support parameterized events - export some parameterized events from the powerpc pmus hv_24x7 and hv_gpci Description of "event parameters" from the documentation patch: Event parameters are a basic way for partial events to be specified in sysfs with per-event names given to the fields that need to be filled in when using a particular event. It is intended for supporting cases where the single 'cpu' parameter is insufficient. For example, POWER 8 has events for physical sockets/cores/cpus that are accessible from with virtual machines. To keep using the single 'cpu' parameter we'd need to perform a mapping between Linux's cpus and the physical machine's cpus (in this case Linux is running under a hypervisor). This isn't possible because bindings between our cpus and physical cpus may not be fixed, and we probably won't have a "cpu" on each physical cpu. Description of the sysfs contents when events are parameterized (copied from an included patch): Examples: domain=0x1,offset=0x8,starting_index=phys_cpu In the case of the last example, a value replacing "phys_cpu" would need to be provided by the user selecting the particular event. This is refered to as "event parameterization". All non-numerical values indicate an event parameter. Notes on how perf-list displays parameterized events (and how to use them, again culled from an included patch): PARAMETERIZED EVENTS -------------------- Some pmu events listed by 'perf-list' will be displayed with '?' in them. For example: hv_gpci/dtbp_ptitc,phys_processor_idx=?/ This means that when provided as an event, a value for phys_processor_idx must also be supplied. For example: perf stat -e 'hv_gpci/dtbp_ptitc,phys_processor_idx=0x2/' ... Changelog[v2] - [Joe Perches, David Laight] Use beNN_to_cpu() instead of guessing the size from type. - Use kmem_cache_free() to free page allocated with kmem_cache_alloc(). - Rebase to recent kernel Cody P Schafer (14): powerpc/perf/hv-24x7: use kmem_cache instead of aligned stack allocations perf Documentation: sysfs events/ interfaces perf Documentation: remove duplicated docs for powerpc cpu specific events perf Documentation: add event parameters tools/perf: annotate list_head with type info tools/perf: support parsing parameterized events tools/perf: extend format_alias() to include event parameters tools/perf: document parameterized events and note symbolically formed events perf: provide sysfs_show for struct perf_pmu_events_attr powerpc/perf/hv-24x7: parse catalog and populate sysfs with events powerpc/perf/hv-24x7: Documentaion for new sysfs entries which expose descriptions perf: add PMU_EVENT_ATTR_STRING() helper powerpc/perf/{hv-gpci,hv-common}: generate requests with counters annotated powerpc/perf/hv-gpci: add the remaining gpci requests .../testing/sysfs-bus-event_source-devices-events | 617 ++-------------- .../testing/sysfs-bus-event_source-devices-hv_24x7 | 22 + arch/powerpc/perf/hv-24x7-catalog.h | 25 + arch/powerpc/perf/hv-24x7-domains.h | 19 + arch/powerpc/perf/hv-24x7.c | 816 ++++++++++++++++++++- arch/powerpc/perf/hv-24x7.h | 12 +- arch/powerpc/perf/hv-common.c | 10 +- arch/powerpc/perf/hv-gpci-requests.h | 258 +++++++ arch/powerpc/perf/hv-gpci.c | 8 + arch/powerpc/perf/hv-gpci.h | 37 +- arch/powerpc/perf/req-gen/_begin.h | 13 + arch/powerpc/perf/req-gen/_clear.h | 5 + arch/powerpc/perf/req-gen/_end.h | 4 + arch/powerpc/perf/req-gen/_request-begin.h | 15 + arch/powerpc/perf/req-gen/_request-end.h | 8 + arch/powerpc/perf/req-gen/perf.h | 155 ++++ include/linux/perf_event.h | 10 + kernel/events/core.c | 8 + tools/perf/Documentation/perf-list.txt | 13 + tools/perf/Documentation/perf-record.txt | 5 + tools/perf/util/parse-events.h | 1 + tools/perf/util/pmu.c | 85 ++- tools/perf/util/pmu.h | 6 +- 23 files changed, 1515 insertions(+), 637 deletions(-) create mode 100644 arch/powerpc/perf/hv-24x7-domains.h create mode 100644 arch/powerpc/perf/hv-gpci-requests.h create mode 100644 arch/powerpc/perf/req-gen/_begin.h create mode 100644 arch/powerpc/perf/req-gen/_clear.h create mode 100644 arch/powerpc/perf/req-gen/_end.h create mode 100644 arch/powerpc/perf/req-gen/_request-begin.h create mode 100644 arch/powerpc/perf/req-gen/_request-end.h create mode 100644 arch/powerpc/perf/req-gen/perf.h -- 1.8.3.1