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report hung radostrace ops on interrupt #92

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report hung radostrace ops on interrupt #92

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14 changes: 11 additions & 3 deletions src/radostrace.bpf.c
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Original file line number Diff line number Diff line change
Expand Up @@ -82,7 +82,6 @@ int uprobe_send_op(struct pt_regs *ctx) {
return 0;
}
memset(val, 0, sizeof(struct client_op_v));
val->sent_stamp = bpf_ktime_get_boot_ns();
val->tid = key.tid;
val->cid = key.cid;
val->rw = 0;
Expand Down Expand Up @@ -180,6 +179,7 @@ int uprobe_send_op(struct pt_regs *ctx) {
bpf_printk("uprobe_send_op got M_start %d\n", M_start);
} else {
bpf_printk("uprobe_send_op got NULL vf at varid %d\n", varid);
bpf_map_delete_elem(&ops, &key);
return 0;
}

Expand All @@ -195,6 +195,7 @@ int uprobe_send_op(struct pt_regs *ctx) {
bpf_printk("uprobe_send_op got m_finish %d\n", m_finish);
} else {
bpf_printk("uprobe_send_op got NULL vf at varid %d\n", varid);
bpf_map_delete_elem(&ops, &key);
return 0;
}

Expand All @@ -220,6 +221,7 @@ int uprobe_send_op(struct pt_regs *ctx) {
bpf_printk("uprobe_send_op got m_start %lld\n", m_start);
} else {
bpf_printk("uprobe_send_op got NULL vf at varid %d\n", varid);
bpf_map_delete_elem(&ops, &key);
return 0;
}

Expand All @@ -234,10 +236,13 @@ int uprobe_send_op(struct pt_regs *ctx) {
bpf_printk("uprobe_send_op got m_start %d\n", val->ops_size);
} else {
bpf_printk("uprobe_send_op got NULL vf at varid %d\n", varid);
bpf_map_delete_elem(&ops, &key);
return 0;
}

val->ops_size &= 3;
if (val->ops_size > 3) {
val->ops_size = 3;
}
val->offset = 0;
val->length = 0;
for (__u32 i = 0; i < 3; ++i) {
Expand Down Expand Up @@ -276,6 +281,9 @@ int uprobe_send_op(struct pt_regs *ctx) {
}
}

val->sent_stamp = bpf_ktime_get_boot_ns();
val->pid = get_pid();

//bpf_map_update_elem(&ops, &key, val, 0);// no need to update again here
return 0;
}
Expand Down Expand Up @@ -318,10 +326,10 @@ int uprobe_finish_op(struct pt_regs *ctx) {
return 0;
}
opv->finish_stamp = bpf_ktime_get_boot_ns();
opv->pid = get_pid();
// submit to ringbuf
struct client_op_v *e = bpf_ringbuf_reserve(&rb, sizeof(struct client_op_v), 0);
if (NULL == e) {
bpf_map_delete_elem(&ops, &key);
return 0;
}
*e = *opv;
Expand Down
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