Re: [PATCH V4 00/23] perf tools: Introduce an abstraction for Instruction Tracing

[Arnaldo Carvalho de Melo <acme@kernel.org>]

Em Tue, Feb 10, 2015 at 02:31:56PM +0200, Adrian Hunter escreveu:
> 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.

Wait a bit, I need to process a patchset from Jiri Olsa that touches the
Makefiles, to pave the way for Kconfig usage in tools/perf/ and a few
other bits, after that gets in, try again please.

- Arnaldo
 
> 
> > 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
> > 
> >