runqlen: use bpf_get_smp_processor_id()

ed02ad8a · Brendan Gregg · e80df106 · ed02ad8a
Commit ed02ad8a authored Dec 14, 2016 by Brendan Gregg
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tools/runqlen.py tools/runqlen.py +1 -1

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--- a/tools/runqlen.py
+++ b/tools/runqlen.py
@@ -99,7 +99,7 @@ if args.cpus:
    bpf_text = bpf_text.replace('STORAGE',
        'BPF_HISTOGRAM(dist, cpu_key_t);')
    bpf_text = bpf_text.replace('STORE', 'cpu_key_t key = {.slot = len}; ' +
-        'bpf_probe_read(&key.cpu, sizeof(key.cpu), &task->wake_cpu);' +
+        'key.cpu = bpf_get_smp_processor_id(); ' +
        'dist.increment(key);')
 else:
    bpf_text = bpf_text.replace('STORAGE',