diff options
Diffstat (limited to 'libbpf-tools/offcputime.bpf.c')
| -rw-r--r-- | libbpf-tools/offcputime.bpf.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/libbpf-tools/offcputime.bpf.c b/libbpf-tools/offcputime.bpf.c index cb20d501..3a36fa32 100644 --- a/libbpf-tools/offcputime.bpf.c +++ b/libbpf-tools/offcputime.bpf.c @@ -63,6 +63,7 @@ int BPF_PROG(sched_switch, bool preempt, struct task_struct *prev, struct task_s struct internal_key *i_keyp, i_key; struct val_t *valp, val; s64 delta; + u64 udelta; u32 pid; if (allow_record(prev)) { @@ -94,13 +95,14 @@ int BPF_PROG(sched_switch, bool preempt, struct task_struct *prev, struct task_s delta = (s64)(bpf_ktime_get_ns() - i_keyp->start_ts); if (delta < 0) goto cleanup; - delta /= 1000U; - if (delta < min_block_ns || delta > max_block_ns) + udelta = (u64)delta; + udelta /= 1000U; + if (udelta < min_block_ns || udelta > max_block_ns) goto cleanup; valp = bpf_map_lookup_elem(&info, &i_keyp->key); if (!valp) goto cleanup; - __sync_fetch_and_add(&valp->delta, delta); + __sync_fetch_and_add(&valp->delta, udelta); cleanup: bpf_map_delete_elem(&start, &pid); |