[PATCH v3 0/4] perf: Support a new 'percore' event qualifier

Jin Yao
2019-03-19T01:06:24Z

The 'percore' event qualifier which sums up the event counts for both
hardware threads in a core. For example,

perf stat -e cpu/event=0,umask=0x3,percore=1/,cpu/event=0,umask=0x3/

In this example, we count the event 'ref-cycles' per-core and per-CPU in
one perf stat command-line.

We can already support per-core counting with --per-core, but it's
often useful to do this together with other metrics that are collected
per CPU (per hardware thread). So this patch series supports this
per-core counting on a event level.

v3:
---
Simplify the patch: "perf: Add a 'percore' event qualifier"
Other patches don't have changes.

v2:
---
1. Change 'coresum' to 'percore'.
2. Move the aggregate counts printing to a seperate patch.

Jin Yao (4):
perf: Add a 'percore' event qualifier
perf stat: Factor out aggregate counts printing
perf stat: Support 'percore' event qualifier
perf test: Add a simple test for term 'percore'

tools/perf/Documentation/perf-stat.txt | 4 ++
tools/perf/builtin-stat.c | 21 +++++++
tools/perf/tests/parse-events.c | 10 ++-
tools/perf/util/evsel.c | 2 +
tools/perf/util/evsel.h | 3 +
tools/perf/util/parse-events.c | 27 +++++++++
tools/perf/util/parse-events.h | 1 +
tools/perf/util/parse-events.l | 1 +
tools/perf/util/stat-display.c | 108 ++++++++++++++++++++++++---------
tools/perf/util/stat.c | 8 ++-
10 files changed, 151 insertions(+), 34 deletions(-)

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2.7.4