linux/tools/perf
Arnaldo Carvalho de Melo 49de179577 perf stat: No need to setup affinities when starting a workload
I.e. the simple:

  $ perf stat sleep 1

Uses a dummy CPU map and thus there is no need to setup/cleanup
affinities to avoid IPIs, etc.

With this we're down to a sched_getaffinity() call, in the libnuma
initialization, that probably can be removed in a followup patch.

Acked-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20220117160931.1191712-3-acme@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-01-18 09:24:58 -03:00
..
arch perf cpumap: Give CPUs their own type 2022-01-12 14:28:23 -03:00
bench perf cpumap: Give CPUs their own type 2022-01-12 14:28:23 -03:00
dlfilters perf dlfilter: Drop unused variable 2021-12-16 12:18:11 -03:00
Documentation perf record: Disable debuginfod by default 2022-01-15 17:41:25 -03:00
examples/bpf
include
jvmti
pmu-events perf pmu-events: Don't lower case MetricExpr 2022-01-12 15:02:48 -03:00
python
scripts perf scripts python: intel-pt-events.py: Fix printing of switch events 2021-12-28 17:26:25 -03:00
tests Merge remote-tracking branch 'torvalds/master' into perf/core 2022-01-13 10:20:59 -03:00
trace
ui perf annotate: Avoid TUI crash when navigating in the annotation of recursive functions 2022-01-10 15:47:30 -03:00
util perf affinity: Allow passing a NULL arg to affinity__cleanup() 2022-01-18 09:24:58 -03:00
.gitignore
Build
builtin-annotate.c
builtin-bench.c perf bench: Use unbuffered output when pipe/tee'ing to a file 2021-12-16 12:18:11 -03:00
builtin-buildid-cache.c perf record: Disable debuginfod by default 2022-01-15 17:41:25 -03:00
builtin-buildid-list.c
builtin-c2c.c perf cpumap: Give CPUs their own type 2022-01-12 14:28:23 -03:00
builtin-config.c
builtin-daemon.c
builtin-data.c
builtin-diff.c
builtin-evlist.c
builtin-ftrace.c perf cpumap: Give CPUs their own type 2022-01-12 14:28:23 -03:00
builtin-help.c
builtin-inject.c perf inject: Fix segfault due to perf_data__fd() without open 2021-12-18 08:31:14 -03:00
builtin-kallsyms.c
builtin-kmem.c perf cpumap: Give CPUs their own type 2022-01-12 14:28:23 -03:00
builtin-kvm.c
builtin-list.c
builtin-lock.c
builtin-mem.c
builtin-probe.c
builtin-record.c perf record: Disable debuginfod by default 2022-01-15 17:41:25 -03:00
builtin-report.c perf callchain: Enable dwarf_callchain_users on arm64 2021-12-21 18:35:44 -03:00
builtin-sched.c perf cpumap: Give CPUs their own type 2022-01-12 14:28:23 -03:00
builtin-script.c perf cpumap: Give CPUs their own type 2022-01-12 14:28:23 -03:00
builtin-stat.c perf stat: No need to setup affinities when starting a workload 2022-01-18 09:24:58 -03:00
builtin-timechart.c
builtin-top.c
builtin-trace.c perf tools changes for v5.17: 1st batch 2022-01-18 06:32:11 +02:00
builtin-version.c
builtin.h
check-headers.sh
command-list.txt
CREDITS
design.txt
Makefile
Makefile.config perf tools: Drop requirement for libstdc++.so for libopencsd check 2021-12-07 22:18:24 -03:00
Makefile.perf perf ftrace: Add -b/--use-bpf option for latency subcommand 2021-12-16 12:18:12 -03:00
MANIFEST
perf-archive.sh
perf-completion.sh
perf-iostat.sh
perf-read-vdso.c
perf-sys.h
perf-with-kcore.sh
perf.c
perf.h