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Yipeng Zou d739270d09 selftests/ftrace: traceonoff_triggers: strip off names ... [ Upstream commit b889b4fb4c ] The func_traceonoff_triggers.tc sometimes goes to fail on my board, Kunpeng-920. [root@localhost]# ./ftracetest ./test.d/ftrace/func_traceonoff_triggers.tc -l fail.log === Ftrace unit tests === [1] ftrace - test for function traceon/off triggers [FAIL] [2] (instance) ftrace - test for function traceon/off triggers [UNSUPPORTED] I look up the log, and it shows that the md5sum is different between csum1 and csum2. ++ cnt=611 ++ sleep .1 +++ cnt_trace +++ grep -v '^#' trace +++ wc -l ++ cnt2=611 ++ '[' 611 -ne 611 ']' +++ cat tracing_on ++ on=0 ++ '[' 0 '!=' 0 ']' +++ md5sum trace ++ csum1='76896aa74362fff66a6a5f3cf8a8a500 trace' ++ sleep .1 +++ md5sum trace ++ csum2='ee8625a21c058818fc26e45c1ed3f6de trace' ++ '[' '76896aa74362fff66a6a5f3cf8a8a500 trace' '!=' 'ee8625a21c058818fc26e45c1ed3f6de trace' ']' ++ fail 'Tracing file is still changing' ++ echo Tracing file is still changing Tracing file is still changing ++ exit_fail ++ exit 1 So I directly dump the trace file before md5sum, the diff shows that: [root@localhost]# diff trace_1.log trace_2.log -y --suppress-common-lines dockerd-12285 [036] d.... 18385.510290: sched_stat | <...>-12285 [036] d.... 18385.510290: sched_stat dockerd-12285 [036] d.... 18385.510291: sched_swit | <...>-12285 [036] d.... 18385.510291: sched_swit <...>-740 [044] d.... 18385.602859: sched_stat | kworker/44:1-740 [044] d.... 18385.602859: sched_stat <...>-740 [044] d.... 18385.602860: sched_swit | kworker/44:1-740 [044] d.... 18385.602860: sched_swit And we can see that <...> filed be filled with names. We can strip off the names there to fix that. After strip off the names: kworker/u257:0-12 [019] d..2. 2528.758910: sched_stat | -12 [019] d..2. 2528.758910: sched_stat_runtime: comm=k kworker/u257:0-12 [019] d..2. 2528.758912: sched_swit | -12 [019] d..2. 2528.758912: sched_switch: prev_comm=kw <idle>-0 [000] d.s5. 2528.762318: sched_waki | -0 [000] d.s5. 2528.762318: sched_waking: comm=sshd pi <idle>-0 [037] dNh2. 2528.762326: sched_wake | -0 [037] dNh2. 2528.762326: sched_wakeup: comm=sshd pi <idle>-0 [037] d..2. 2528.762334: sched_swit | -0 [037] d..2. 2528.762334: sched_switch: prev_comm=sw Link: https://lore.kernel.org/r/20230818013226.2182299-1-zouyipeng@huawei.com Fixes: d87b29179a ("selftests: ftrace: Use md5sum to take less time of checking logs") Suggested-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Yipeng Zou <zouyipeng@huawei.com> Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		History 2026-01-19 13:09:59 +01:00
..
accounting	SPDX patches for 5.7-rc1.	2020-04-03 13:12:26 -07:00
arch	tools/x86/kcpuid: Protect against faulty "max subleaf" values	2024-10-17 15:11:28 +02:00
bootconfig	tools/bootconfig: Fix the wrong format specifier	2025-03-13 12:50:10 +01:00
bpf	bpftool: Fix memory leak in dump_xx_nlmsg on realloc failure	2025-08-28 16:24:07 +02:00
build	tools build: Align warning options with perf	2025-10-19 16:21:42 +02:00
cgroup	tools/cgroup/slabinfo.py: updated to work on current kernel	2021-04-23 14:42:40 -07:00
debugging	tools: Fix "the the" in a message in kernel-chktaint	2021-06-13 17:01:17 -06:00
edid	tools/edid: Move EDID data sets from Documentation/	2020-02-19 04:10:32 -07:00
firewire	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156	2019-05-30 11:26:35 -07:00
firmware	Driver Core and debugfs changes for 5.3-rc1	2019-07-12 12:24:03 -07:00
gpio	tools: gpio: fix debounce_period_us output of lsgpio	2023-06-21 15:59:12 +02:00
hv	vmbus_testing: fix wrong python syntax for integer value comparison	2023-09-19 12:22:28 +02:00
iio	tools/iio: Add memory allocation failure check for trigger_name	2024-10-17 15:11:52 +02:00
include	tools/nolibc: make time_t robust if __kernel_old_time_t is missing in host headers	2025-10-19 16:21:31 +02:00
io_uring	tools/io_uring/io_uring-cp: sync with liburing example	2021-08-13 08:58:11 -06:00
kvm/kvm_stat	tools/kvm_stat: fix display of error when multiple processes are found	2022-08-11 13:07:51 +02:00
laptop	change email address for Pali Rohár	2020-04-10 15:36:22 -07:00
leds	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
lib	libbpf: Fix invalid return address register in s390	2025-12-07 06:09:37 +09:00
memory-model	tools/memory-model: Fix bug in lock.cat	2024-08-19 05:45:15 +02:00
objtool	objtool: Stop UNRET validation on UD2	2025-05-02 07:44:37 +02:00
pci	tools: PCI: Zero-initialize param	2021-08-05 11:01:30 +01:00
pcmcia	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
perf	perf tools: Fix split kallsyms DSO counting	2026-01-19 13:09:36 +01:00
power	tools/power x86_energy_perf_policy: Prefer driver HWP limits	2025-12-07 06:09:17 +09:00
rcu	tools/rcu: Add drgn script to dump number of RCU callbacks	2021-05-10 15:39:19 -07:00
scripts	tools: Override makefile ARCH variable if defined, but empty	2024-12-14 19:51:30 +01:00
spi	spi: tools: make a symbolic link to the header file spi.h	2021-04-22 16:30:39 +01:00
testing	selftests/ftrace: traceonoff_triggers: strip off names	2026-01-19 13:09:59 +01:00
thermal/tmon	tools/thermal: Fix possible path truncations	2022-08-17 14:24:15 +02:00
time	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282	2019-06-05 17:36:37 +02:00
tracing	tracing/tools: Fix incorrcet short option in usage text for --threads	2025-12-07 06:09:32 +09:00
usb	usbip: tools: Fix detach_port() invalid port error path	2024-11-08 16:25:54 +01:00
virtio	tools/virtio: fix build	2024-03-01 13:21:52 +01:00
vm	tools/vm/slabinfo-gnuplot: use "grep -E" instead of "egrep"	2022-12-08 11:28:42 +01:00
wmi	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
Makefile	tracing/tools: Add the latency-collector to tools directory	2021-02-12 11:52:59 -05:00