[PATCH v2 3/5] perf test trace: Stop tracing hrtimer_setup event in trace enum test

From: Howard Chu
Date: Sun May 18 2025 - 15:10:42 EST


The event 'timer:hrtimer_setup' is relatively new, for older kernels,
perf trace enum tests won't run as the event 'timer:hrtimer_setup'
cannot be found.

It was originally called 'timer:hrtimer_init', before being renamed in:

commit 244132c4e577 ("tracing/timers: Rename the hrtimer_init event to hrtimer_setup")

Using timer:hrtimer_start should be enough for current testing, and
hopefully 'start' won't be renamed in the future.

Before:
$ sudo /tmp/perf test enum -vv
107: perf trace enum augmentation tests:
107: perf trace enum augmentation tests : Running
--- start ---
test child forked, pid 786187
Checking if vmlinux exists
Tracing syscall landlock_add_rule
Tracing non-syscall tracepoint timer:hrtimer_setup,timer:hrtimer_start
[tracepoint failure] Failed to trace timer:hrtimer_setup,timer:hrtimer_start tracepoint, output:
event syntax error: 'timer:hrtimer_setup,timer:hrtimer_start'
\___ unknown tracepoint

Error: File /sys/kernel/tracing//events/timer/hrtimer_setup not found.
Hint: Perhaps this kernel misses some CONFIG_ setting to enable this feature?.

Run 'perf list' for a list of valid events

Usage: perf trace [<options>] [<command>]
or: perf trace [<options>] -- <command> [<options>]
or: perf trace record [<options>] [<command>]
or: perf trace record [<options>] -- <command> [<options>]

-e, --event <event> event/syscall selector. use 'perf list' to list available events
---- end(-1) ----
107: perf trace enum augmentation tests : FAILED!

After:
$ sudo /tmp/perf test enum -vv
107: perf trace enum augmentation tests:
107: perf trace enum augmentation tests : Running
--- start ---
test child forked, pid 808547
Checking if vmlinux exists
Tracing syscall landlock_add_rule
Tracing non-syscall tracepoint timer:hrtimer_start
---- end(0) ----
107: perf trace enum augmentation tests : Ok

Signed-off-by: Howard Chu <howardchu95@xxxxxxxxx>
---
tools/perf/tests/shell/trace_btf_enum.sh | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/tests/shell/trace_btf_enum.sh b/tools/perf/tests/shell/trace_btf_enum.sh
index f59ba34fac4c..c37017bfeb5e 100755
--- a/tools/perf/tests/shell/trace_btf_enum.sh
+++ b/tools/perf/tests/shell/trace_btf_enum.sh
@@ -5,7 +5,7 @@
err=0

syscall="landlock_add_rule"
-non_syscall="timer:hrtimer_setup,timer:hrtimer_start"
+non_syscall="timer:hrtimer_start"

TESTPROG="perf test -w landlock"

--
2.45.2