linux/tools/perf
James Clark 7814fe24a6 perf evlist: Fix evlist__new_default() for > 1 core PMU
The 'Session topology' test currently fails with this message when
evlist__new_default() opens more than one event:

  32: Session topology                                                :
  --- start ---
  templ file: /tmp/perf-test-vv5YzZ
  Using CPUID 0x00000000410fd070
  Opening: unknown-hardware:HG
  ------------------------------------------------------------
  perf_event_attr:
    type                             0 (PERF_TYPE_HARDWARE)
    config                           0xb00000000
    disabled                         1
  ------------------------------------------------------------
  sys_perf_event_open: pid 0  cpu -1  group_fd -1  flags 0x8 = 4
  Opening: unknown-hardware:HG
  ------------------------------------------------------------
  perf_event_attr:
    type                             0 (PERF_TYPE_HARDWARE)
    config                           0xa00000000
    disabled                         1
  ------------------------------------------------------------
  sys_perf_event_open: pid 0  cpu -1  group_fd -1  flags 0x8 = 5
  non matching sample_type
  FAILED tests/topology.c:73 can't get session
  ---- end ----
  Session topology: FAILED!

This is because when re-opening the file and parsing the header, Perf
expects that any file that has more than one event has the sample ID
flag set. Perf record already sets the flag in a similar way when there
is more than one event, so add the same logic to evlist__new_default().

evlist__new_default() is only currently used in tests, so I don't
expect this change to have any other side effects. The other tests that
use it don't save and re-open the file so don't hit this issue.

The session topology test has been failing on Arm big.LITTLE platforms
since commit 251aa04024 ("perf parse-events: Wildcard most
"numeric" events") when evlist__new_default() started opening multiple
events for 'cycles'.

Fixes: 251aa04024 ("perf parse-events: Wildcard most "numeric" events")
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: James Clark <james.clark@arm.com>
[ This was failing as well on a Rocket Lake Refresh/14700k Intel hybrid system - Arnaldo ]
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Ian Rogers <irogers@google.com>
Tested-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Changbin Du <changbin.du@huawei.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Yang Jihong <yangjihong1@huawei.com>
Closes: https://lore.kernel.org/lkml/CAP-5=fWVQ-7ijjK3-w1q+k2WYVNHbAcejb-xY0ptbjRw476VKA@mail.gmail.com/
Link: https://lore.kernel.org/r/20240124094358.489372-1-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2024-01-30 11:40:28 -03:00
..
arch perf tools improvements and fixes for v6.8: 2024-01-19 14:25:23 -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 list: Add output file option 2024-01-26 10:51:49 -03:00
include/perf perf dlfilter: Add al_cleanup() 2023-08-15 16:41:49 -03:00
jvmti
pmu-events perf vendor events intel: Alderlake/sapphirerapids metric fixes 2024-01-27 16:31:41 -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 shell daemon: Make signal test less racy 2024-01-26 10:51:49 -03:00
trace tools headers uapi: Sync linux/stat.h with the kernel sources to pick STATX_MNT_ID_UNIQUE 2024-01-26 10:51:48 -03:00
ui perf TUI: Don't ignore job control 2024-01-04 18:29:17 -03:00
util perf evlist: Fix evlist__new_default() for > 1 core PMU 2024-01-30 11:40:28 -03:00
.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 libperf cpumap: Rename perf_cpu_map__empty() to perf_cpu_map__has_any_cpu_or_is_empty() 2023-12-12 14:55:13 -03:00
builtin-config.c
builtin-daemon.c perf tools: Add missing else to cmd_daemon subcommand condition 2023-06-27 12:09:44 -07:00
builtin-data.c
builtin-diff.c perf diff: Replaces some ',' as separator with the more usual ';' 2023-07-20 11:43:45 -03:00
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 perf symbol: Remove now unused symbol_conf.sort_by_name 2023-06-23 21:48:49 -07:00
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: Add output file option 2024-01-26 10:51:49 -03:00
builtin-lock.c perf lock: Fix a memory leak on an error path 2023-11-27 10:21:27 -03:00
builtin-mem.c
builtin-probe.c
builtin-record.c perf tools: Fix calloc() arguments to address error introduced in gcc-14 2024-01-26 12:56:01 -03:00
builtin-report.c perf report: Support data type profiling 2023-12-23 22:39:42 -03:00
builtin-sched.c libperf rc_check: Add RC_CHK_EQUAL 2023-10-25 13:37:22 -07:00
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: Remove needless malloc(0) call that triggers -Walloc-size 2024-01-26 12:06:12 -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: Add status of bpf skeletons 2023-09-18 16:46:15 -07:00
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 probe: Convert to check dwarf_getcfi feature 2023-11-10 09:04:21 -03:00
Makefile.perf perf build: Make minimal shellcheck version to v0.6.0 2024-01-26 12:06:12 -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