[PATCH 0/6] perf tools: Enable AUX area tracing snapshots using a FIFO

Adrian Hunter
2020-08-29T10:51:32Z

Hi

Here are some patches to enable AUX area tracing snapshots using a FIFO.
Presently SIGUSR2 can be used but the advantage of the FIFO is that access
is governed by access to the FIFO. Refer to the example in patch 5.

The first 4 patches are preparation, including patch 4 which enhances the
--control option to accept file names.

Patch 5 adds snapshot control command.

The final patch updates Intel PT documentation.

Adrian Hunter (6):
perf tools: Consolidate --control option parsing into one function
perf tools: Handle read errors from ctl_fd
perf tools: Use AsciiDoc formatting for --control option documentation
perf tools: Add FIFO file names as alternative options to --control
perf record: Add 'snapshot' control command
perf intel-pt: Document snapshot control command

tools/perf/Documentation/perf-intel-pt.txt | 23 ++++++-
tools/perf/Documentation/perf-record.txt | 56 ++++++++---------
tools/perf/Documentation/perf-stat.txt | 48 ++++++++-------
tools/perf/builtin-record.c | 74 +++++++++++++----------
tools/perf/builtin-stat.c | 35 +++++------
tools/perf/util/evlist.c | 96 +++++++++++++++++++++++++++---
tools/perf/util/evlist.h | 6 +-
tools/perf/util/record.h | 1 +
tools/perf/util/stat.h | 1 +
9 files changed, 227 insertions(+), 113 deletions(-)

Regards
Adrian