[PATCH V2 00/22] perf tools: Introduce an abstraction for Instruction Tracing

Adrian Hunter
2014-11-20T13:25:22Z

Hi

Here is V2 of some more preparatory patches for Intel PT
that introduce an abstraction for Instruction tracing.

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 (22):
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

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 | 2 +
tools/perf/builtin-buildid-list.c | 9 +
tools/perf/builtin-inject.c | 157 +++-
tools/perf/builtin-record.c | 173 +++-
tools/perf/builtin-report.c | 12 +
tools/perf/builtin-script.c | 39 +-
tools/perf/perf.h | 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 | 1255 ++++++++++++++++++++++++++++++
tools/perf/util/itrace.h | 447 +++++++++++
tools/perf/util/record.c | 11 +-
tools/perf/util/session.c | 148 +++-
tools/perf/util/session.h | 6 +
tools/perf/util/tool.h | 10 +-
25 files changed, 2468 insertions(+), 47 deletions(-)
create mode 100644 tools/perf/util/itrace.c
create mode 100644 tools/perf/util/itrace.h

Regards
Adrian