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Ian Rogers 24852ef2e2 perf pmu: Treat the msr pmu as software 
The msr PMU is a software one, meaning msr events may be grouped
with events in a hardware context. As the msr PMU isn't marked as a
software PMU by perf_pmu__is_software, groups with the msr PMU in
are broken and the msr events placed in a different group. This
may lead to multiplexing errors where a hardware event isn't
counted while the msr event, such as tsc, is. Fix all of this by
marking the msr PMU as software, which agrees with the driver.

Before:
```
$ perf stat -e '{slots,tsc}' -a true
WARNING: events were regrouped to match PMUs

 Performance counter stats for 'system wide':

         1,750,335      slots
         4,243,557      tsc

       0.001456717 seconds time elapsed
```

After:
```
$ perf stat -e '{slots,tsc}' -a true
 Performance counter stats for 'system wide':

        12,526,380      slots
         3,415,163      tsc

       0.001488360 seconds time elapsed
```

Fixes: 251aa04024 ("perf parse-events: Wildcard most "numeric" events")
Signed-off-by: Ian Rogers <irogers@google.com>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Cc: James Clark <james.clark@arm.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Edward Baker <edward.baker@intel.com>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Weilin Wang <weilin.wang@intel.com>
Link: https://lore.kernel.org/r/20240124234200.1510417-1-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2024-01-25 15:22:59 -08:00
..
arch perf mem: Clean up perf_pmus__num_mem_pmus() 2024-01-24 14:05:22 -08:00
bench libperf cpumap: Replace usage of perf_cpu_map__new(NULL) with perf_cpu_map__new_online_cpus() 2023-12-12 14:55:13 -03:00
dlfilters perf dlfilter: Add a test for object_code() 2023-09-30 00:09:06 -07:00
Documentation perf tools improvements and fixes for v6.8: 2024-01-19 14:25:23 -08:00
include/perf
jvmti
pmu-events perf vendor events intel: Update sapphirerapids events to v1.17 2024-01-04 17:38:18 -03:00
python
scripts perf scripts python arm-cs-trace-disasm.py: Do not ignore disam first sample 2023-12-20 14:31:59 -03:00
tests perf test: Skip test_arm_callgraph_fp.sh if unwinding isn't built in 2024-01-24 14:13:48 -08:00
trace Merge remote-tracking branch 'torvalds/master' into perf-tools-next 2023-12-18 21:37:07 -03:00
ui perf TUI: Don't ignore job control 2024-01-04 18:29:17 -03:00
util perf pmu: Treat the msr pmu as software 2024-01-25 15:22:59 -08:00
.gitignore perf build: Shellcheck support for OUTPUT directory 2023-12-05 15:46:43 -03:00
Build
builtin-annotate.c perf annotate: Add --insn-stat option for debugging 2023-12-23 22:40:17 -03:00
builtin-bench.c perf tools changes for v6.6: 2023-09-09 20:06:17 -07:00
builtin-buildid-cache.c perf buildid-cache: Fix use of uninitialized value 2023-10-12 10:01:56 -07:00
builtin-buildid-list.c
builtin-c2c.c perf mem: Clean up perf_pmus__num_mem_pmus() 2024-01-24 14:05:22 -08:00
builtin-config.c
builtin-daemon.c
builtin-data.c
builtin-diff.c
builtin-evlist.c
builtin-ftrace.c libperf cpumap: Replace usage of perf_cpu_map__new(NULL) with perf_cpu_map__new_online_cpus() 2023-12-12 14:55:13 -03:00
builtin-help.c
builtin-inject.c perf record: Lazy load kernel symbols 2023-11-09 13:49:32 -03:00
builtin-kallsyms.c
builtin-kmem.c
builtin-kvm.c
builtin-kwork.c perf kwork: Fix a build error on 32-bit 2023-11-21 10:02:38 -08:00
builtin-list.c perf list: Fix JSON segfault by setting the used skip_duplicate_pmus callback 2023-12-05 11:16:00 -08:00
builtin-lock.c perf lock: Fix a memory leak on an error path 2023-11-27 10:21:27 -03:00
builtin-mem.c perf mem: Clean up perf_pmus__num_mem_pmus() 2024-01-24 14:05:22 -08:00
builtin-probe.c
builtin-record.c perf data: Minor code style alignment cleanup 2024-01-22 12:08:21 -08:00
builtin-report.c perf report: Support data type profiling 2023-12-23 22:39:42 -03:00
builtin-sched.c perf sched: Commit to evsel__taskstate() to parse task state info 2024-01-22 23:02:46 -08:00
builtin-script.c perf: script: fix missing ',' for fields option 2023-10-17 12:40:51 -07:00
builtin-stat.c perf stat: Combine the -A/--no-aggr and --no-merge options 2023-12-14 18:24:38 -03:00
builtin-timechart.c
builtin-top.c perf top: Uniform the event name for the hybrid machine 2023-12-14 19:13:10 -03:00
builtin-trace.c perf env: Introduce perf_env__arch_strerrno() 2023-12-04 16:42:09 -03:00
builtin-version.c perf version: Display availability of HAVE_DWARF_UNWIND_SUPPORT 2024-01-24 14:13:48 -08:00
builtin.h
check-headers.sh perf tools: Add get_unaligned_leNN() 2023-10-17 12:40:02 -07:00
command-list.txt
CREDITS
design.txt
Makefile
Makefile.config perf build: Check whether pkg-config is installed when libtraceevent is linked 2024-01-22 12:08:19 -08:00
Makefile.perf Merge remote-tracking branch 'torvalds/master' into perf-tools-next 2023-12-18 21:37:07 -03:00
MANIFEST tools perf: Add arm64 sysreg files to MANIFEST 2023-11-22 11:17:53 -08:00
perf-archive.sh perf archive: Add new option '--unpack' to expand tarballs 2023-12-20 13:20:45 -03:00
perf-completion.sh perf shell completion: Support completion of metrics/metricgroups 2023-09-11 10:26:36 -03:00
perf-iostat.sh
perf-read-vdso.c
perf-sys.h
perf.c perf tools: Add --debug-file option to redirect debug output 2023-11-28 14:14:53 -03:00
perf.h