[PATCH 0/2] perf, pt: Fix massive data losses

[Alexander Shishkin]

Hi Peter,

Markus reported that PT is losing a lot of its data in cpu-wide mode.
There are two problems in play here, both are amplified by the fact
that cpu-wide events don't normally get re-scheduled, so if we don't
disable them when their buffers are full, they get forever stuck.
Hence two patches. I propose to put these through perf/urgent and also
stable trees so that people with older kernels still get to collect
humongous amounts of PT traces in cpu-wide mode.

Alexander Shishkin (2):
  perf/x86/intel/pt: Generate PMI in the STOP region as well
  perf: Disable the event on a truncated AUX record

 arch/x86/events/intel/pt.c  |  2 ++
 kernel/events/ring_buffer.c | 10 +++++++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

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2.8.1