zfsdist: fix for python3
The BPF.get_kprobe_functions method tests if the passed argument
matches with a line of kallsyms, which is opened in binary mode.
Therefore the regex pattern must be bytes as well.
diff --git a/tools/zfsdist.py b/tools/zfsdist.py
index 5d5645a..6b29b99 100755
--- a/tools/zfsdist.py
+++ b/tools/zfsdist.py
@@ -137,10 +137,10 @@
b = BPF(text=bpf_text)
# common file functions
-if BPF.get_kprobe_functions('zpl_iter'):
+if BPF.get_kprobe_functions(b'zpl_iter'):
b.attach_kprobe(event="zpl_iter_read", fn_name="trace_entry")
b.attach_kprobe(event="zpl_iter_write", fn_name="trace_entry")
-elif BPF.get_kprobe_functions('zpl_aio'):
+elif BPF.get_kprobe_functions(b'zpl_aio'):
b.attach_kprobe(event="zpl_aio_read", fn_name="trace_entry")
b.attach_kprobe(event="zpl_aio_write", fn_name="trace_entry")
else:
@@ -148,10 +148,10 @@
b.attach_kprobe(event="zpl_write", fn_name="trace_entry")
b.attach_kprobe(event="zpl_open", fn_name="trace_entry")
b.attach_kprobe(event="zpl_fsync", fn_name="trace_entry")
-if BPF.get_kprobe_functions('zpl_iter'):
+if BPF.get_kprobe_functions(b'zpl_iter'):
b.attach_kretprobe(event="zpl_iter_read", fn_name="trace_read_return")
b.attach_kretprobe(event="zpl_iter_write", fn_name="trace_write_return")
-elif BPF.get_kprobe_functions('zpl_aio'):
+elif BPF.get_kprobe_functions(b'zpl_aio'):
b.attach_kretprobe(event="zpl_aio_read", fn_name="trace_read_return")
b.attach_kretprobe(event="zpl_aio_write", fn_name="trace_write_return")
else: