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e1c19cd376
linux/tools/perf
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Martin Kaiser e1c19cd376 perf test: Fix "trace summary" test for musl-based systems 
The trace summary test calls /bin/true and filters for open, read and
close events. These events are coming from shared library loads.

On a musl system, the loader and libc may point to the same file. true
needs only libc, no further shared libraries are loaded at startup. The
test fails since no open, read and close events are captured.

  root@host:~# ldd /bin/true
	/lib/ld-musl-riscv64.so.1 (0x3fb8882000)
	libc.so => /lib/ld-musl-riscv64.so.1 (0x3fb8882000)

  root@host:~# file /lib/ld-musl-riscv64.so.1
  /lib/ld-musl-riscv64.so.1: symbolic link to /usr/lib/libc.so

  root@host:~# strace -f /bin/true
  execve("/bin/true", ["/bin/true", ...], ... /* 18 vars */) = 1
  set_tid_address(0x3fa1f7bf70)           = 330
  mprotect(0x2ad6b8e000, 12288, PROT_READ) = 0
  exit_group(0)                           = ?
  +++ exited with 0 +++

Run "cat /dev/null" instead of "true". This creates the required events
regardless of the C library and it works for cat from busybox or from
coreutils.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Acked-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2026-05-11 14:16:38 -03:00
..
arch perf callchain: Handle multiple address spaces 2026-05-05 21:55:12 -03:00
bench perf tools: Use calloc() where applicable 2026-04-08 19:21:05 -07:00
check-header_ignore_hunks/lib perf tools: update expected diff for lib/list_sort.c 2024-11-05 17:12:33 -08:00
dlfilters perf tools: Simplify evsel__add_modifier() 2024-10-22 09:52:11 -07:00
Documentation perf report: Update document for SIMD flags 2026-04-10 09:52:06 -07:00
include/perf perf dso: Move build_id to dso_id 2025-07-25 10:37:56 -07:00
jvmti perf tools: Use calloc() where applicable 2026-04-08 19:21:05 -07:00
pmu-events perf build: fix "argument list too long" in second location 2026-04-13 23:22:16 -07:00
python perf ilist: Be tolerant of reading a metric on the wrong CPU 2025-12-02 16:12:49 -08:00
scripts perf script: Fix script_fetch_insn for more than just x86 2026-01-27 01:35:22 -03:00
tests perf test: Fix "trace summary" test for musl-based systems 2026-05-11 14:16:38 -03:00
trace perf tools updates for 7.1 2026-04-18 09:24:56 -07:00
ui perf disasm: Refactor arch__find and initialization of arch structs 2026-01-23 16:58:39 -03:00
util perf arm_spe: Print remaining IMPDEF event numbers 2026-05-05 22:04:28 -03:00
.gitignore perf jevents: Build support for generating metrics from python 2026-01-28 15:18:44 -03:00
Build perf build: Specify shellcheck should use bash 2025-06-30 09:43:06 -07:00
builtin-annotate.c perf tools: Use calloc() where applicable 2026-04-08 19:21:05 -07:00
builtin-bench.c perf bench: Constify tables 2026-04-08 19:21:05 -07:00
builtin-buildid-cache.c perf symbol: Fix ENOENT case for filename__read_build_id 2025-12-17 07:30:51 -08:00
builtin-buildid-list.c perf machine: Explicitly pass in host perf_env 2025-07-25 10:37:57 -07:00
builtin-c2c.c perf tools: Use calloc() where applicable 2026-04-08 19:21:05 -07:00
builtin-check.c perf check: Add libbabeltrace to the listed features 2026-02-12 17:45:22 -03:00
builtin-config.c perf tools: Make more global variables static 2026-04-08 19:21:04 -07:00
builtin-daemon.c perf tools: Replace basename() calls with perf_basename() 2026-04-08 19:21:05 -07:00
builtin-data.c perf tools: Make more global variables static 2026-04-08 19:21:04 -07:00
builtin-diff.c perf tools: Use calloc() where applicable 2026-04-08 19:21:05 -07:00
builtin-evlist.c perf tool: Add the perf_tool argument to all callbacks 2025-11-07 13:25:05 -08:00
builtin-ftrace.c perf tools: Use calloc() where applicable 2026-04-08 19:21:05 -07:00
builtin-help.c perf help: Move common_cmds into builtin-help 2026-01-14 17:22:50 -03:00
builtin-inject.c perf callchain: Handle multiple address spaces 2026-05-05 21:55:12 -03:00
builtin-kallsyms.c perf machine: Explicitly pass in host perf_env 2025-07-25 10:37:57 -07:00
builtin-kmem.c perf tools: Make more global variables static 2026-04-08 19:21:04 -07:00
builtin-kvm.c perf session: Add e_flags to the e_machine helper 2026-02-03 18:01:27 -03:00
builtin-kwork.c perf tools: Use calloc() where applicable 2026-04-08 19:21:05 -07:00
builtin-list.c Merge remote-tracking branch 'torvalds/master' into perf-tools-next 2026-01-26 17:03:53 -03:00
builtin-lock.c perf lock: Fix option value type in parse_max_stack 2026-03-26 15:02:42 -07:00
builtin-mem.c perf auxtrace: Remove errno.h from auxtrace.h and fix transitive dependencies 2025-11-13 23:03:11 -08:00
builtin-probe.c perf tools: Add layout support for --symfs option 2026-03-10 23:13:30 -07:00
builtin-record.c perf data: Clean up use_stdio and structures 2026-04-08 19:21:17 -07:00
builtin-report.c perf header: Refactor pipe mode end marker handling 2026-04-02 19:35:16 -07:00
builtin-sched.c perf tools: Use calloc() where applicable 2026-04-08 19:21:05 -07:00
builtin-script.c perf tools: Use calloc() where applicable 2026-04-08 19:21:05 -07:00
builtin-stat.c perf tools: Use calloc() where applicable 2026-04-08 19:21:05 -07:00
builtin-timechart.c perf tools: Add layout support for --symfs option 2026-03-10 23:13:30 -07:00
builtin-top.c perf tools: Make more global variables static 2026-04-08 19:21:04 -07:00
builtin-trace.c perf tools: Use calloc() where applicable 2026-04-08 19:21:05 -07:00
builtin-version.c perf check: Share the feature status printing routine with 'perf version' 2025-04-10 10:44:04 -03:00
builtin.h perf check: Allow showing a tip for opt-in features not built into perf 2025-04-10 10:44:42 -03:00
check-headers.sh perf beauty: Move copy of fadvise.h from tools/include/ to tools/perf/trace/beauty/include/ 2026-03-31 20:23:06 -07:00
CREDITS
design.txt
Makefile perf tools: Fix wrong message when running "make JOBS=1" 2024-08-01 12:11:33 -03:00
Makefile.config perf build: Update error message for BUILD_NONDISTRO=1 2026-05-05 22:06:44 -03:00
Makefile.perf perf build: Add -fms-extensions for GEN_VMLINUX_H=1 2026-05-05 22:07:05 -03:00
MANIFEST perf tools: Fix arm64 source package build 2025-05-13 17:26:35 -03:00
perf-archive.sh tools/perf: Add --exclude-buildids option to perf archive command 2025-06-26 15:40:19 -07:00
perf-completion.sh perf build: Add shellcheck to tools/perf scripts 2024-04-12 17:54:02 -03:00
perf-iostat.sh
perf-read-vdso.c
perf-sys.h
perf.c perf tool: Constify the command and option arrays 2026-03-13 14:26:27 -07:00
perf.h perf: Completely remove possibility to override MAX_NR_CPUS 2025-09-12 10:52:22 -03:00