update the definition of check_debugfs

check_debugfs should not only be serviced for mce.
And add a new function dedicated for mce.

Signed-off-by: Chen Gong <gong.chen@linux.intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

1 files changed, 12 insertions, 2 deletions

diff --git a/lib/mce.sh b/lib/mce.sh
index a286421..f8170d5 100644
--- a/lib/mce.sh
+++ b/lib/mce.sh
@@ -300,13 +300,23 @@ get_tolerant()
 
 check_debugfs()
 {
-    [ ! -d /sys/kernel/debug/mce ] && mount -t debugfs none /sys/kernel/debug
-    [ ! -d /sys/kernel/debug/mce ] && die "Kernel without CONFIG_X86_MCE_INJECT?"
+	mount|grep debugfs
+	[ ! $? -eq 0 ] && mount -t debugfs none /sys/kernel/debug
+	mount|grep debugfs
+	[ ! $? -eq 0 ] && die "Kernel without debugfs support ?"
+}
+
+# should be called after check_debugfs
+check_mce()
+{
+    DEBUGFS=`mount | grep debugfs | cut -d ' ' -f3`
+    [ ! -d ${DEBUGFS}/mce ] && die "Kernel without CONFIG_X86_MCE_INJECT ?"
 }
 
 set_fake_panic()
 {
     check_debugfs
+    check_mce
     [ $# -eq 1 ] || die "missing parameter for set_fake_panic"
     echo -n $1 > /sys/kernel/debug/mce/fake_panic
 }