Messages in this thread |  | | Date | Mon, 17 Feb 2025 12:49:18 +0100 | | From | Heiko Carstens <> | | Subject | Re: [GIT PULL] ftrace: Updates for v6.14 |
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Hi Steven, Masami,
On Sun, Jan 19, 2025 at 07:31:34PM -0500, Steven Rostedt wrote: > ftrace updates for v6.14: > > - Have fprobes built on top of function graph infrastructure
this seems to cause a regression:
When I run tools/testing/selftests/ftrace/ftracetest I now end up with all functions being enabled for ftrace after the test suite ran:
$ wc -l /sys/kernel/debug/tracing/enabled_functions 50779 /sys/kernel/debug/tracing/enabled_functions
$ cat /sys/kernel/debug/tracing/enabled_functions ... down (1) down_interruptible (1) down_killable (1)
$ cat /sys/kernel/debug/tracing/current_tracer nop
Bisected to commit 4346ba160409 ("fprobe: Rewrite fprobe on function-graph tracer"). Before this commit there were no ftrace enabled functions after the test suite finished:
$ wc -l /sys/kernel/debug/tracing/enabled_functions 0 /sys/kernel/debug/tracing/enabled_functions
This is on s390 with defconfig.
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