tools: handle renamed lookup_fast function in dcache tools

The lookup_fast function can be rename lookup_fast.constprop.x by gcc constant propagation optimization and that breaks dcstat and dcsnoop. Let's look for both name using a regular expression.
e-dant · Mar 20, 2021 · cdfddc4 · cdfddc4
1 parent 31d8bdf
commit cdfddc4
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/tools/dcsnoop.py b/tools/dcsnoop.py
@@ -129,7 +129,7 @@
 # initialize BPF
 b = BPF(text=bpf_text)
 if args.all:
- b.attach_kprobe(event="lookup_fast", fn_name="trace_fast")
+ b.attach_kprobe(event_re="^lookup_fast$|^lookup_fast.constprop.*.\d$", fn_name="trace_fast")
 
 mode_s = {
  0: 'M',

diff --git a/tools/dcstat.py b/tools/dcstat.py
@@ -91,7 +91,7 @@ def usage():
 
 # load BPF program
 b = BPF(text=bpf_text)
-b.attach_kprobe(event="lookup_fast", fn_name="count_fast")
+b.attach_kprobe(event_re="^lookup_fast$|^lookup_fast.constprop.*.\d$", fn_name="count_fast")
 b.attach_kretprobe(event="d_lookup", fn_name="count_lookup")
 
 # stat column labels and indexes