From d18657ec2ec5aab939577f82939ab7fe12f257a2 Mon Sep 17 00:00:00 2001
From: Brendan Gregg <brendan.d.gregg@gmail.com>
Date: Wed, 10 Feb 2016 16:38:18 -0800
Subject: [PATCH] save one bpf_probe_read()

---
 tools/dcsnoop.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/tools/dcsnoop.py b/tools/dcsnoop.py
index 956af6dd6fc0..6d3753fed34a 100755
--- a/tools/dcsnoop.py
+++ b/tools/dcsnoop.py
@@ -70,8 +70,9 @@
 {
     u32 pid = bpf_get_current_pid_tgid();
     struct entry_t entry = {};
-    if (name->name) {
-        bpf_probe_read(&entry.name, sizeof(entry.name), (void *)name->name);
+    const char *fname = name->name;
+    if (fname) {
+        bpf_probe_read(&entry.name, sizeof(entry.name), (void *)fname);
     }
     entrybypid.update(&pid, &entry);
     return 0;