From: Landen <landen@sun.com>
Date: Tue, 30 Mar 2010 19:00:32 +0000 (-0700)
Subject: b=19944 promise every cpu has at least 2MB debug memory.
X-Git-Tag: 1.10.0.39~14
X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=commitdiff_plain;h=f0657b96c66ab03c9208ee4b23a1ea5c7d44bd15;hp=7d064eac04eb5d74fd82a422fe5bd33a167f8be8

b=19944 promise every cpu has at least 2MB debug memory.

i=johann
---

diff --git a/libcfs/libcfs/tracefile.c b/libcfs/libcfs/tracefile.c
index 63a23ef..47f3ab5 100644
--- a/libcfs/libcfs/tracefile.c
+++ b/libcfs/libcfs/tracefile.c
@@ -907,8 +907,11 @@ int cfs_trace_set_debug_mb(int mb)
         int limit = cfs_trace_max_debug_mb();
         struct cfs_trace_cpu_data *tcd;
 
-        if (mb < cfs_num_possible_cpus())
+        if (mb < cfs_num_possible_cpus()) {
+                printk(KERN_ERR "Cannot set debug_mb to %d, the value should be >= %d\n",
+                       mb, num_possible_cpus());
                 return -EINVAL;
+        }
 
         if (mb > limit) {
                 printk(CFS_KERN_ERR "Lustre: Refusing to set debug buffer size "
diff --git a/lustre/tests/cfg/local.sh b/lustre/tests/cfg/local.sh
index d4c32b6..46a9fc2 100644
--- a/lustre/tests/cfg/local.sh
+++ b/lustre/tests/cfg/local.sh
@@ -45,6 +45,9 @@ SINGLEMDS=${SINGLEMDS:-"mds1"}
 TIMEOUT=${TIMEOUT:-20}
 PTLDEBUG=${PTLDEBUG:-0x33f0404}
 DEBUG_SIZE=${DEBUG_SIZE:-10}
+if [ `grep processor /proc/cpuinfo | wc -l` -gt 5 ]; then
+    DEBUG_SIZE=$((`grep processor /proc/cpuinfo | wc -l` * 2))   # promise 2MB for every cpu
+fi
 SUBSYSTEM=${SUBSYSTEM:- 0xffb7e3ff}
 
 ENABLE_QUOTA=${ENABLE_QUOTA:-""}