Add default stack checking

[zfs.git] / scripts / common.sh.in

diff --git a/scripts/common.sh.in b/scripts/common.sh.in
index 09ca818..51671eb 100644 (file)
--- a/scripts/common.sh.in
+++ b/scripts/common.sh.in
@@ -11,7 +11,8 @@ SCRIPT_CONFIG=zfs-script-config.sh
 if [ -f "${basedir}/../${SCRIPT_CONFIG}" ]; then
 . "${basedir}/../${SCRIPT_CONFIG}"
 else
-MODULES=(zlib_deflate spl splat zavl znvpair zunicode zcommon zfs)
+KERNEL_MODULES=(zlib_deflate zlib_inflate)
+MODULES=(spl splat zavl znvpair zunicode zcommon zfs)
 fi
 
 PROG="<define PROG>"
@@ -162,7 +163,7 @@ load_module() {
                echo "Loading ${NAME} ($@)"
        fi
 
-       ${LDMOD} $* || ERROR="Failed to load $1" return 1
+       ${LDMOD} $* &>/dev/null || ERROR="Failed to load $1" return 1
 
        return 0
 }
@@ -170,6 +171,10 @@ load_module() {
 load_modules() {
        mkdir -p /etc/zfs
 
+       for MOD in ${KERNEL_MODULES[*]}; do
+               load_module ${MOD}
+       done
+
        for MOD in ${MODULES[*]}; do
                local NAME=`basename ${MOD} .ko`
                local VALUE=
@@ -425,7 +430,7 @@ scsi_rescan() {
 #
 udev_trigger() {
        if [ -f ${UDEVADM} ]; then
-               ${UDEVADM} trigger
+               ${UDEVADM} trigger --action=change --subsystem-match=block
                ${UDEVADM} settle
        else
                /sbin/udevtrigger
@@ -630,3 +635,29 @@ wait_udev() {
 
        return 0
 }
+
+stack_clear() {
+       local STACK_MAX_SIZE=/sys/kernel/debug/tracing/stack_max_size
+       local STACK_TRACER_ENABLED=/proc/sys/kernel/stack_tracer_enabled
+
+       if [ -e $STACK_MAX_SIZE ]; then
+               echo 1 >$STACK_TRACER_ENABLED
+               echo 0 >$STACK_MAX_SIZE
+       fi
+}
+
+stack_check() {
+       local STACK_MAX_SIZE=/sys/kernel/debug/tracing/stack_max_size
+       local STACK_TRACE=/sys/kernel/debug/tracing/stack_trace
+       local STACK_LIMIT=7000
+
+       if [ -e $STACK_MAX_SIZE ]; then
+               STACK_SIZE=`cat $STACK_MAX_SIZE`
+
+               if [ $STACK_SIZE -ge $STACK_LIMIT ]; then
+                       echo
+                       echo "Warning: max stack size $STACK_SIZE bytes"
+                       cat $STACK_TRACE
+               fi
+       fi
+}