On 3/15/2019 9:34 PM, Jiri Olsa wrote:
On Sat, Mar 16, 2019 at 12:04:13AM +0800, Jin Yao wrote:
The coresum 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,coresum=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.
seems useful, but perhaps we should follow the --per-core option
we already have and call it 'per-core' instead of coresum
jirka
Yes, the coresum's behavior is similar as --per-core option, just
supports at the event level. I'm OK with calling it 'per-core'.
For example,
perf stat -e cpu/event=0,umask=0x3,per-core=1/
Thanks
Jin Yao
Jin Yao (3):
perf: Add a coresum event qualifier
perf stat: Support coresum event qualifier
perf test: Add a simple test for term coresum
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(-)
--
2.7.4
