diff --git a/src/drsnoop/drsnoop.bpf.c b/src/drsnoop/drsnoop.bpf.c
index 122228e33436c1c45c292b2a112210439ded6990..e0eaf0875f2f217a34c4d7922569b0dcbc4dd8a9 100644
--- a/src/drsnoop/drsnoop.bpf.c
+++ b/src/drsnoop/drsnoop.bpf.c
@@ -27,3 +27,25 @@ struct {
 	__uint(value_size, sizeof(u32));
 } events SEC(".maps");
 
+static int handle_direct_reclaim_begin()
+{
+	u64 *vm_zone_stat_kaddrp = (u64 *)vm_zone_stat_kaddr;
+	u64 id = bpf_get_current_pid_tgid();
+	struct piddata piddata = {};
+	u32 tgid = id >> 32;
+	u32 pid = id;
+
+	if (target_tgid && target_tgid != tgid)
+		return 0;
+	if (target_pid && target_pid != pid)
+		return 0;
+
+	piddata.ts = bpf_ktime_get_ns();
+	if (vm_zone_stat_kaddrp) {
+		bpf_core_read(&piddata.nr_free_pages, sizeof(u64),
+			      &vm_zone_stat_kaddrp[NR_FREE_PAGES]);
+	}
+
+	bpf_map_update_elem(&start, &pid, &piddata, BPF_ANY);
+	return 0;
+}