Merge pull request #1333 from samuelnair/fix-py-tut

Fix for bug in lesson 4 of the Python developer tutorial
iovisor · Sep 7, 2017 · 08dbf13 · 08dbf13
2 parents 566597c + e7a5bdc
commit 08dbf13
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diff --git a/docs/tutorial_bcc_python_developer.md b/docs/tutorial_bcc_python_developer.md
@@ -123,7 +123,7 @@ b = BPF(text="""
 
 BPF_HASH(last);
 
-void do_trace(struct pt_regs *ctx) {
+int do_trace(struct pt_regs *ctx) {
  u64 ts, *tsp, delta, key = 0;
 
  // attempt to read stored timestamp
@@ -140,6 +140,7 @@ void do_trace(struct pt_regs *ctx) {
  // update stored timestamp
  ts = bpf_ktime_get_ns();
  last.update(&key, &ts);
+ return 0;
 }
 """)
 

diff --git a/examples/tracing/sync_timing.py b/examples/tracing/sync_timing.py
@@ -18,7 +18,7 @@
 
 BPF_HASH(last);
 
-void do_trace(struct pt_regs *ctx) {
+int do_trace(struct pt_regs *ctx) {
  u64 ts, *tsp, delta, key = 0;
 
  // attempt to read stored timestamp
@@ -35,6 +35,7 @@
  // update stored timestamp
  ts = bpf_ktime_get_ns();
  last.update(&key, &ts);
+ return 0;
 }
 """)