linux-kernel - [PATCH 0/2] perf/x86/intel/pt: Optimizations

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Message-Id: <20191105082701.78442-1-alexander.shishkin@linux.intel.com>
Date:   Tue,  5 Nov 2019 10:26:59 +0200
From:   Alexander Shishkin <alexander.shishkin@...ux.intel.com>
To:     Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:     Arnaldo Carvalho de Melo <acme@...hat.com>,
        Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
        Jiri Olsa <jolsa@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Subject: [PATCH 0/2] perf/x86/intel/pt: Optimizations

Hi Peter,

The first one was earlier part of the AUX sampling patchset, but wasn't
strictly sampling related. The second one is based on an observation that
between high-order AUX allocations and the Single Range output, we don't
have to reprogram buffer-related MSRs all of the time.

Alexander Shishkin (2):
  perf/x86/intel/pt: Opportunistically use single range output mode
  perf/x86/intel/pt: Prevent redundant WRMSRs

 arch/x86/events/intel/pt.c | 129 ++++++++++++++++++++++++++++---------
 arch/x86/events/intel/pt.h |  14 ++--
 2 files changed, 109 insertions(+), 34 deletions(-)

-- 
2.24.0.rc1