From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Thu, 29 Dec 2011 14:46:34 +0000 (-0500)
Subject: rculfhash: add comment about hash seed randomness within test program
X-Git-Tag: v0.7.0~43^2~3
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=c9582f158c435783c9675ea763735d975d92ed91;p=userspace-rcu.git

rculfhash: add comment about hash seed randomness within test program

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/tests/test_urcu_hash.c b/tests/test_urcu_hash.c
index eb6cca9..adeac3c 100644
--- a/tests/test_urcu_hash.c
+++ b/tests/test_urcu_hash.c
@@ -41,6 +41,12 @@
 #define DEFAULT_MIN_ALLOC_SIZE	1
 #define DEFAULT_RAND_POOL	1000000
 
+/*
+ * Note: the hash seed should be a random value for hash tables
+ * targeting production environments to provide protection against
+ * denial of service attacks. We keep it a static value within this test
+ * program to compare identical benchmark runs.
+ */
 #define TEST_HASH_SEED	0x42UL
 
 /* Make this big enough to include the POWER5+ L3 cacheline size of 256B */