[PATCH 0/5] perf jitdump: Fix PID namespace detection

[Ilya Leoshkevich <iii@linux.ibm.com>]

Hi,

I ran into a problem with perf jitdump not working with still running
namespaced processes and started (very slowly) working on a series that
allows perf to record accurate PID namespace information [1] and use
that instead of resorting to guesswork.

However, I realized that at least short-term it's possible to fix the
existing heuristic, so I've created this series. Patch 1 is the fix.
Patches 2-4 are small changes to the existing test, and patch 5 adds
a test that reproduces the situation that I'm facing.

[1] https://github.com/iii-i/linux/commits/iii/wip/nspid/

Best regards,
Ilya

Ilya Leoshkevich (5):
  perf jitdump: Fix PID namespace detection
  perf test java symbol: Get rid of shellcheck warnings
  perf test java symbol: Extract LIBJVMTI detection
  perf test java symbol: Fix a false negative in symbol regex
  perf test java symbol: Add PID namespace variant

 tools/perf/tests/shell/lib/setup_libjvmti.sh  |  18 +++
 tools/perf/tests/shell/test_java_symbol.sh    |  39 +++--
 .../tests/shell/test_java_symbol_pidns.sh     | 135 ++++++++++++++++++
 tools/perf/util/jitdump.c                     |  27 +++-
 tools/perf/util/namespaces.c                  |   9 ++
 tools/perf/util/namespaces.h                  |   2 +
 6 files changed, 201 insertions(+), 29 deletions(-)
 create mode 100644 tools/perf/tests/shell/lib/setup_libjvmti.sh
 create mode 100755 tools/perf/tests/shell/test_java_symbol_pidns.sh

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2.51.1