mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-31 08:28:13 +00:00
7f193c2519
Add simple test script to execute funciton graph tracer while BPF trampoline attaches and detaches from the functions being graph traced. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20191209000114.1876138-4-ast@kernel.org
39 lines
701 B
Bash
Executable file
39 lines
701 B
Bash
Executable file
#!/bin/bash
|
|
|
|
TR=/sys/kernel/debug/tracing/
|
|
clear_trace() { # reset trace output
|
|
echo > $TR/trace
|
|
}
|
|
|
|
disable_tracing() { # stop trace recording
|
|
echo 0 > $TR/tracing_on
|
|
}
|
|
|
|
enable_tracing() { # start trace recording
|
|
echo 1 > $TR/tracing_on
|
|
}
|
|
|
|
reset_tracer() { # reset the current tracer
|
|
echo nop > $TR/current_tracer
|
|
}
|
|
|
|
disable_tracing
|
|
clear_trace
|
|
|
|
echo "" > $TR/set_ftrace_filter
|
|
echo '*printk* *console* *wake* *serial* *lock*' > $TR/set_ftrace_notrace
|
|
|
|
echo "bpf_prog_test*" > $TR/set_graph_function
|
|
echo "" > $TR/set_graph_notrace
|
|
|
|
echo function_graph > $TR/current_tracer
|
|
|
|
enable_tracing
|
|
./test_progs -t fentry
|
|
./test_progs -t fexit
|
|
disable_tracing
|
|
clear_trace
|
|
|
|
reset_tracer
|
|
|
|
exit 0
|