26 Oct
2020
26 Oct
'20
4:03 p.m.
On Sat, 24 Oct 2020 10:31:12 +0900 Masami Hiramatsu mhiramat@kernel.org wrote:
Perhaps we should have:
# older kernels have do_fork, but newer kernels have kernel_clone echo kernel_clone >> set_ftrace_filter || echo *do_fork >> set_ftrace_filter
Good catch. BTW, can we check the filter-bility by grep the pattern from set_ftrace_filter?
I think we need to use /proc/kallsyms, as the kprobe code should still work if function tracing is disabled, and the function filter files will not exist.
-- Steve