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Message-ID: <54D9FA3C.20400@intel.com> Date: Tue, 10 Feb 2015 14:31:56 +0200 From: Adrian Hunter <adrian.hunter@...el.com> To: Arnaldo Carvalho de Melo <acme@...nel.org> CC: Peter Zijlstra <peterz@...radead.org>, linux-kernel@...r.kernel.org, David Ahern <dsahern@...il.com>, Frederic Weisbecker <fweisbec@...il.com>, Jiri Olsa <jolsa@...hat.com>, Namhyung Kim <namhyung@...il.com>, Paul Mackerras <paulus@...ba.org>, Stephane Eranian <eranian@...gle.com> Subject: Re: [PATCH V4 00/23] perf tools: Introduce an abstraction for Instruction Tracing On 08/01/15 14:52, Adrian Hunter wrote: > Hi > > Here is V4 of some more preparatory patches for Intel PT > that introduce an abstraction for Instruction tracing. > > The master branch of the tree: > > git://git.infradead.org/users/ahunter/linux-perf.git > > contains these patches plus Intel PT and BTS and the kernel driver. > Arnaldo, I was thinking of sending V5 (re-based plus a couple of small changes) but there seem to be a number of large patch sets pending and I also have the main Intel PT patches (25 patches), so I was wondering if you have preferred order for handling them all? AFAICT Peter has accepted the Intel PT kernel driver but I don't know if it will be in 3.20. > Changes in V4: > > perf tools: Add build option NO_ITRACE to exclude Instruction Tracing > New patch > > Re-based on Arnaldo's perf/core branch: > > 3dd417d4010c8e141b0f32121cdc8d82aa4a9c6a > perf tools: Remove some unused functions from color.c > > Changes in V3: > > perf tools: Add support for Instruction Trace recording > Added evsel as a parameter to itrace_record__init > > perf record: Add basic Instruction Tracing support > Moved the call to itrace_record__init after parse > options so that evsel could be passed and the > selected events used to determine what kind of > Instruction Tracing to use e.g. Intel PT vs BTS > > Re-based on Arnaldo's perf/core branch: > > 41e950c033b7df997d4b38653efe6554be9b96a7 > Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent > > Changes in V2: > > Dropped patches already applied. > > Re-based on Arnaldo's perf/core branch: > > a84808083688d82d7f1e5786ccf5df0ff7d448cb > perf tools: Only override the default :tid comm entry > > > The abstraction has two separate aspects: > 1. recording Instruction Trace data > 2. processing Instruction Trace data > > Recording consists of mmapping a separate buffer and copying > the data into the perf.data file. The buffer is an AUX area > buffer although the details of the AUX area are not implemented > because the kernel support is pending. The data is written > preceded by a new user event PERF_RECORD_ITRACE. The data is > too big to fit in the event but follows immediately afterward. > Session processing has to skip to get to the next event header > in a similar fashion to the existing PERF_RECORD_HEADER_TRACING_DATA > event. The main recording patches are: > > perf evlist: Add initial support for mmapping an Instruction Trace buffer > perf tools: Add user events for Instruction Tracing > perf tools: Add support for Instruction Trace recording > perf record: Add basic Instruction Tracing support > > Processing consists of providing hooks in session processing > to enable an Instruction Trace decoder to see all the events > and deliver synthesized events transparently into the event > stream. The main processing patch is: > > perf session: Add hooks to allow transparent decoding of Instruction Tracing data > > > Adrian Hunter (23): > perf header: Add Instruction Tracing feature > perf evlist: Add initial support for mmapping an Instruction Trace buffer > perf tools: Add user events for Instruction Tracing > perf tools: Add support for Instruction Trace recording > perf record: Add basic Instruction Tracing support > perf record: Extend -m option for Instruction Tracing mmap pages > perf tools: Add a user event for Instruction Tracing errors > perf session: Add hooks to allow transparent decoding of Instruction Tracing data > perf session: Add Instruction Tracing options > perf itrace: Add helpers for Instruction Tracing errors > perf itrace: Add helpers for queuing Instruction Tracing data > perf itrace: Add a heap for sorting Instruction Tracing queues > perf itrace: Add processing for Instruction Tracing events > perf itrace: Add a hashtable for caching decoded instructions > perf tools: Add member to struct dso for an instruction cache > perf script: Add Instruction Tracing support > perf script: Always allow fields 'addr' and 'cpu' for itrace > perf report: Add Instruction Tracing support > perf inject: Re-pipe Instruction Tracing events > perf inject: Add Instruction Tracing support > perf tools: Add Instruction Tracing index > perf tools: Hit all build ids when Instruction Tracing > perf tools: Add build option NO_ITRACE to exclude Instruction Tracing > > tools/perf/Documentation/perf-inject.txt | 27 + > tools/perf/Documentation/perf-record.txt | 2 + > tools/perf/Documentation/perf-report.txt | 28 + > tools/perf/Documentation/perf-script.txt | 28 + > tools/perf/Makefile.perf | 6 + > tools/perf/builtin-buildid-list.c | 9 + > tools/perf/builtin-inject.c | 172 +++- > tools/perf/builtin-record.c | 186 ++++- > tools/perf/builtin-report.c | 12 + > tools/perf/builtin-script.c | 39 +- > tools/perf/config/Makefile | 4 + > tools/perf/perf.h | 2 + > tools/perf/tests/make | 2 + > tools/perf/util/dso.c | 2 + > tools/perf/util/dso.h | 3 + > tools/perf/util/event.c | 3 + > tools/perf/util/event.h | 38 + > tools/perf/util/evlist.c | 70 +- > tools/perf/util/evlist.h | 6 + > tools/perf/util/header.c | 36 + > tools/perf/util/header.h | 1 + > tools/perf/util/itrace.c | 1258 ++++++++++++++++++++++++++++++ > tools/perf/util/itrace.h | 561 +++++++++++++ > tools/perf/util/record.c | 11 +- > tools/perf/util/session.c | 148 +++- > tools/perf/util/session.h | 6 + > tools/perf/util/tool.h | 10 +- > 27 files changed, 2624 insertions(+), 46 deletions(-) > create mode 100644 tools/perf/util/itrace.c > create mode 100644 tools/perf/util/itrace.h > > > Regards > Adrian > > -- 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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