linux-kernel - [PATCH 0/4] perf, pt, coresight: AUX flags and VMX update

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Date:   Mon, 20 Feb 2017 15:33:48 +0200
From:   Alexander Shishkin <alexander.shishkin@...ux.intel.com>
To:     Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Ingo Molnar <mingo@...hat.com>
Cc:     linux-kernel@...r.kernel.org, vince@...ter.net, eranian@...gle.com,
        Arnaldo Carvalho de Melo <acme@...radead.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Subject: [PATCH 0/4] perf, pt, coresight: AUX flags and VMX update

Hi Peter,

With the vmm_exclusive=0, PT seems to be much more usable on BDW now. This
patchset does three things:
 * adds a flag to PERF_RECORD_AUX, signalling that a transaction has gaps
   in it (due to VMX root mode kicking in),
 * changes the AUX API slightly to allow for flags to be set at arbitrary
   points between perf_aux_output_begin() and perf_aux_output_end(),
 * restarts PT after VMXOFF.

I also stole Will's patch from another patchset that adds EXPORT_SYMBOL_GPL
to the AUX calls, which is not strictly relevant, but happens to touch the
same area and is long overdue. The AUX flags patch is also based on Will's
patch from that same context.

Alexander Shishkin (2):
  perf: Add a flag for partial AUX records
  perf/x86/intel/pt: Handle VMX better

Will Deacon (2):
  perf: Export AUX buffer helpers to modules
  perf: Keep AUX flags in the output handle

 arch/x86/events/intel/bts.c                      | 16 +++----
 arch/x86/events/intel/pt.c                       | 55 +++++++++++++-----------
 arch/x86/events/intel/pt.h                       |  1 -
 drivers/hwtracing/coresight/coresight-etb10.c    |  7 ++-
 drivers/hwtracing/coresight/coresight-etm-perf.c |  9 ++--
 drivers/hwtracing/coresight/coresight-priv.h     |  2 -
 drivers/hwtracing/coresight/coresight-tmc-etf.c  |  7 ++-
 include/linux/coresight.h                        |  2 +-
 include/linux/perf_event.h                       |  8 ++--
 include/uapi/linux/perf_event.h                  |  1 +
 kernel/events/ring_buffer.c                      | 38 +++++++++++-----
 11 files changed, 81 insertions(+), 65 deletions(-)

-- 
2.11.0