Update to commit: 04689e749b7ec156291446028a0ce2e685bf3855

from repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
branch: master

62 files changed, 886 insertions, 71 deletions

diff --git a/Makefile b/Makefile
index 36ff2e4..45f145c 100644
--- a/Makefile
+++ b/Makefile
@@ -14,6 +14,7 @@ TARGETS += powerpc
 TARGETS += user
 TARGETS += sysctl
 TARGETS += firmware
+TARGETS += ftrace
 
 TARGETS_HOTPLUG = cpu-hotplug
 TARGETS_HOTPLUG += memory-hotplug
diff --git a/ftrace/Makefile b/ftrace/Makefile
new file mode 100644
index 0000000..76cc9f1
--- /dev/null
+++ b/ftrace/Makefile
@@ -0,0 +1,7 @@
+all:
+
+run_tests:
+	@/bin/sh ./ftracetest || echo "ftrace selftests: [FAIL]"
+
+clean:
+	rm -rf logs/*
diff --git a/ftrace/README b/ftrace/README
new file mode 100644
index 0000000..182e76f
--- /dev/null
+++ b/ftrace/README
@@ -0,0 +1,82 @@
+Linux Ftrace Testcases
+
+This is a collection of testcases for ftrace tracing feature in the Linux
+kernel. Since ftrace exports interfaces via the debugfs, we just need
+shell scripts for testing. Feel free to add new test cases.
+
+Running the ftrace testcases
+============================
+
+At first, you need to be the root user to run this script.
+To run all testcases:
+
+  $ sudo ./ftracetest
+
+To run specific testcases:
+
+  # ./ftracetest test.d/basic3.tc
+
+Or you can also run testcases under given directory:
+
+  # ./ftracetest test.d/kprobe/
+
+Contributing new testcases
+==========================
+
+Copy test.d/template to your testcase (whose filename must have *.tc
+extension) and rewrite the test description line.
+
+ * The working directory of the script is <debugfs>/tracing/.
+
+ * Take care with side effects as the tests are run with root privilege.
+
+ * The tests should not run for a long period of time (more than 1 min.)
+   These are to be unit tests.
+
+ * You can add a directory for your testcases under test.d/ if needed.
+
+ * The test cases should run on dash (busybox shell) for testing on
+   minimal cross-build environments.
+
+ * Note that the tests are run with "set -e" (errexit) option. If any
+   command fails, the test will be terminated immediately.
+
+ * The tests can return some result codes instead of pass or fail by
+   using exit_unresolved, exit_untested, exit_unsupported and exit_xfail.
+
+Result code
+===========
+
+Ftracetest supports following result codes.
+
+ * PASS: The test succeeded as expected. The test which exits with 0 is
+         counted as passed test.
+
+ * FAIL: The test failed, but was expected to succeed. The test which exits
+         with !0 is counted as failed test.
+
+ * UNRESOLVED: The test produced unclear or intermidiate results.
+             for example, the test was interrupted
+                       or the test depends on a previous test, which failed.
+                       or the test was set up incorrectly
+             The test which is in above situation, must call exit_unresolved.
+
+ * UNTESTED: The test was not run, currently just a placeholder.
+             In this case, the test must call exit_untested.
+
+ * UNSUPPORTED: The test failed because of lack of feature.
+               In this case, the test must call exit_unsupported.
+
+ * XFAIL: The test failed, and was expected to fail.
+          To return XFAIL, call exit_xfail from the test.
+
+There are some sample test scripts for result code under samples/.
+You can also run samples as below:
+
+  # ./ftracetest samples/
+
+TODO
+====
+
+ * Fancy colored output :)
+
diff --git a/ftrace/ftracetest b/ftrace/ftracetest
new file mode 100755
index 0000000..5152476
--- /dev/null
+++ b/ftrace/ftracetest
@@ -0,0 +1,253 @@
+#!/bin/sh
+
+# ftracetest - Ftrace test shell scripts
+#
+# Copyright (C) Hitachi Ltd., 2014
+#  Written by Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
+#
+# Released under the terms of the GPL v2.
+
+usage() { # errno [message]
+[ "$2" ] && echo $2
+echo "Usage: ftracetest [options] [testcase(s)] [testcase-directory(s)]"
+echo " Options:"
+echo "		-h|--help  Show help message"
+echo "		-k|--keep  Keep passed test logs"
+echo "		-d|--debug Debug mode (trace all shell commands)"
+exit $1
+}
+
+errexit() { # message
+  echo "Error: $1" 1>&2
+  exit 1
+}
+
+# Ensuring user privilege
+if [ `id -u` -ne 0 ]; then
+  errexit "this must be run by root user"
+fi
+
+# Utilities
+absdir() { # file_path
+  (cd `dirname $1`; pwd)
+}
+
+abspath() {
+  echo `absdir $1`/`basename $1`
+}
+
+find_testcases() { #directory
+  echo `find $1 -name \*.tc`
+}
+
+parse_opts() { # opts
+  local OPT_TEST_CASES=
+  local OPT_TEST_DIR=
+
+  while [ "$1" ]; do
+    case "$1" in
+    --help|-h)
+      usage 0
+    ;;
+    --keep|-k)
+      KEEP_LOG=1
+      shift 1
+    ;;
+    --debug|-d)
+      DEBUG=1
+      shift 1
+    ;;
+    *.tc)
+      if [ -f "$1" ]; then
+        OPT_TEST_CASES="$OPT_TEST_CASES `abspath $1`"
+        shift 1
+      else
+        usage 1 "$1 is not a testcase"
+      fi
+      ;;
+    *)
+      if [ -d "$1" ]; then
+        OPT_TEST_DIR=`abspath $1`
+        OPT_TEST_CASES="$OPT_TEST_CASES `find_testcases $OPT_TEST_DIR`"
+        shift 1
+      else
+        usage 1 "Invalid option ($1)"
+      fi
+    ;;
+    esac
+  done
+  if [ "$OPT_TEST_CASES" ]; then
+    TEST_CASES=$OPT_TEST_CASES
+  fi
+}
+
+# Parameters
+DEBUGFS_DIR=`grep debugfs /proc/mounts | cut -f2 -d' ' | head -1`
+TRACING_DIR=$DEBUGFS_DIR/tracing
+TOP_DIR=`absdir $0`
+TEST_DIR=$TOP_DIR/test.d
+TEST_CASES=`find_testcases $TEST_DIR`
+LOG_DIR=$TOP_DIR/logs/`date +%Y%m%d-%H%M%S`/
+KEEP_LOG=0
+DEBUG=0
+# Parse command-line options
+parse_opts $*
+
+[ $DEBUG -ne 0 ] && set -x
+
+# Verify parameters
+if [ -z "$DEBUGFS_DIR" -o ! -d "$TRACING_DIR" ]; then
+  errexit "No ftrace directory found"
+fi
+
+# Preparing logs
+LOG_FILE=$LOG_DIR/ftracetest.log
+mkdir -p $LOG_DIR || errexit "Failed to make a log directory: $LOG_DIR"
+date > $LOG_FILE
+prlog() { # messages
+  echo "$@" | tee -a $LOG_FILE
+}
+catlog() { #file
+  cat $1 | tee -a $LOG_FILE
+}
+prlog "=== Ftrace unit tests ==="
+
+
+# Testcase management
+# Test result codes - Dejagnu extended code
+PASS=0	# The test succeeded.
+FAIL=1	# The test failed, but was expected to succeed.
+UNRESOLVED=2  # The test produced indeterminate results. (e.g. interrupted)
+UNTESTED=3    # The test was not run, currently just a placeholder.
+UNSUPPORTED=4 # The test failed because of lack of feature.
+XFAIL=5	# The test failed, and was expected to fail.
+
+# Accumulations
+PASSED_CASES=
+FAILED_CASES=
+UNRESOLVED_CASES=
+UNTESTED_CASES=
+UNSUPPORTED_CASES=
+XFAILED_CASES=
+UNDEFINED_CASES=
+TOTAL_RESULT=0
+
+CASENO=0
+testcase() { # testfile
+  CASENO=$((CASENO+1))
+  prlog -n "[$CASENO]"`grep "^#[ \t]*description:" $1 | cut -f2 -d:`
+}
+
+eval_result() { # retval sigval
+  local retval=$2
+  if [ $2 -eq 0 ]; then
+    test $1 -ne 0 && retval=$FAIL
+  fi
+  case $retval in
+    $PASS)
+      prlog "	[PASS]"
+      PASSED_CASES="$PASSED_CASES $CASENO"
+      return 0
+    ;;
+    $FAIL)
+      prlog "	[FAIL]"
+      FAILED_CASES="$FAILED_CASES $CASENO"
+      return 1 # this is a bug.
+    ;;
+    $UNRESOLVED)
+      prlog "	[UNRESOLVED]"
+      UNRESOLVED_CASES="$UNRESOLVED_CASES $CASENO"
+      return 1 # this is a kind of bug.. something happened.
+    ;;
+    $UNTESTED)
+      prlog "	[UNTESTED]"
+      UNTESTED_CASES="$UNTESTED_CASES $CASENO"
+      return 0
+    ;;
+    $UNSUPPORTED)
+      prlog "	[UNSUPPORTED]"
+      UNSUPPORTED_CASES="$UNSUPPORTED_CASES $CASENO"
+      return 1 # this is not a bug, but the result should be reported.
+    ;;
+    $XFAIL)
+      prlog "	[XFAIL]"
+      XFAILED_CASES="$XFAILED_CASES $CASENO"
+      return 0
+    ;;
+    *)
+      prlog "	[UNDEFINED]"
+      UNDEFINED_CASES="$UNDEFINED_CASES $CASENO"
+      return 1 # this must be a test bug
+    ;;
+  esac
+}
+
+# Signal handling for result codes
+SIG_RESULT=
+SIG_BASE=36	# Use realtime signals
+SIG_PID=$$
+
+SIG_UNRESOLVED=$((SIG_BASE + UNRESOLVED))
+exit_unresolved () {
+  kill -s $SIG_UNRESOLVED $SIG_PID
+  exit 0
+}
+trap 'SIG_RESULT=$UNRESOLVED' $SIG_UNRESOLVED
+
+SIG_UNTESTED=$((SIG_BASE + UNTESTED))
+exit_untested () {
+  kill -s $SIG_UNTESTED $SIG_PID
+  exit 0
+}
+trap 'SIG_RESULT=$UNTESTED' $SIG_UNTESTED
+
+SIG_UNSUPPORTED=$((SIG_BASE + UNSUPPORTED))
+exit_unsupported () {
+  kill -s $SIG_UNSUPPORTED $SIG_PID
+  exit 0
+}
+trap 'SIG_RESULT=$UNSUPPORTED' $SIG_UNSUPPORTED
+
+SIG_XFAIL=$((SIG_BASE + XFAIL))
+exit_xfail () {
+  kill -s $SIG_XFAIL $SIG_PID
+  exit 0
+}
+trap 'SIG_RESULT=$XFAIL' $SIG_XFAIL
+
+# Run one test case
+run_test() { # testfile
+  local testname=`basename $1`
+  local testlog=`mktemp --tmpdir=$LOG_DIR ${testname}-XXXXXX.log`
+  testcase $1
+  echo "execute: "$1 > $testlog
+  SIG_RESULT=0
+  # setup PID and PPID, $$ is not updated.
+  (cd $TRACING_DIR; read PID _ < /proc/self/stat ;
+   set -e; set -x; . $1) >> $testlog 2>&1
+  eval_result $? $SIG_RESULT
+  if [ $? -eq 0 ]; then
+    # Remove test log if the test was done as it was expected.
+    [ $KEEP_LOG -eq 0 ] && rm $testlog
+  else
+    catlog $testlog
+    TOTAL_RESULT=1
+  fi
+}
+
+# Main loop
+for t in $TEST_CASES; do
+  run_test $t
+done
+
+prlog ""
+prlog "# of passed: " `echo $PASSED_CASES | wc -w`
+prlog "# of failed: " `echo $FAILED_CASES | wc -w`
+prlog "# of unresolved: " `echo $UNRESOLVED_CASES | wc -w`
+prlog "# of untested: " `echo $UNTESTED_CASES | wc -w`
+prlog "# of unsupported: " `echo $UNSUPPORTED_CASES | wc -w`
+prlog "# of xfailed: " `echo $XFAILED_CASES | wc -w`
+prlog "# of undefined(test bug): " `echo $UNDEFINED_CASES | wc -w`
+
+# if no error, return 0
+exit $TOTAL_RESULT
diff --git a/ftrace/samples/fail.tc b/ftrace/samples/fail.tc
new file mode 100644
index 0000000..15e35b9
--- /dev/null
+++ b/ftrace/samples/fail.tc
@@ -0,0 +1,4 @@
+#!/bin/sh
+# description: failure-case example
+cat non-exist-file
+echo "this is not executed"
diff --git a/ftrace/samples/pass.tc b/ftrace/samples/pass.tc
new file mode 100644
index 0000000..d015493
--- /dev/null
+++ b/ftrace/samples/pass.tc
@@ -0,0 +1,3 @@
+#!/bin/sh
+# description: pass-case example
+return 0
diff --git a/ftrace/samples/unresolved.tc b/ftrace/samples/unresolved.tc
new file mode 100644
index 0000000..41e99d3
--- /dev/null
+++ b/ftrace/samples/unresolved.tc
@@ -0,0 +1,4 @@
+#!/bin/sh
+# description: unresolved-case example
+trap exit_unresolved INT
+kill -INT $PID
diff --git a/ftrace/samples/unsupported.tc b/ftrace/samples/unsupported.tc
new file mode 100644
index 0000000..45910ff
--- /dev/null
+++ b/ftrace/samples/unsupported.tc
@@ -0,0 +1,3 @@
+#!/bin/sh
+# description: unsupported-case example
+exit_unsupported
diff --git a/ftrace/samples/untested.tc b/ftrace/samples/untested.tc
new file mode 100644
index 0000000..35a4594
--- /dev/null
+++ b/ftrace/samples/untested.tc
@@ -0,0 +1,3 @@
+#!/bin/sh
+# description: untested-case example
+exit_untested
diff --git a/ftrace/samples/xfail.tc b/ftrace/samples/xfail.tc
new file mode 100644
index 0000000..9dd3953
--- /dev/null
+++ b/ftrace/samples/xfail.tc
@@ -0,0 +1,3 @@
+#!/bin/sh
+# description: xfail-case example
+cat non-exist-file || exit_xfail
diff --git a/ftrace/test.d/00basic/basic1.tc b/ftrace/test.d/00basic/basic1.tc
new file mode 100644
index 0000000..9980ff1
--- /dev/null
+++ b/ftrace/test.d/00basic/basic1.tc
@@ -0,0 +1,3 @@
+#!/bin/sh
+# description: Basic trace file check
+test -f README -a -f trace -a -f tracing_on -a -f trace_pipe
diff --git a/ftrace/test.d/00basic/basic2.tc b/ftrace/test.d/00basic/basic2.tc
new file mode 100644
index 0000000..bf9a7b0
--- /dev/null
+++ b/ftrace/test.d/00basic/basic2.tc
@@ -0,0 +1,7 @@
+#!/bin/sh
+# description: Basic test for tracers
+test -f available_tracers
+for t in `cat available_tracers`; do
+  echo $t > current_tracer
+done
+echo nop > current_tracer
diff --git a/ftrace/test.d/00basic/basic3.tc b/ftrace/test.d/00basic/basic3.tc
new file mode 100644
index 0000000..bde6625
--- /dev/null
+++ b/ftrace/test.d/00basic/basic3.tc
@@ -0,0 +1,8 @@
+#!/bin/sh
+# description: Basic trace clock test
+test -f trace_clock
+for c in `cat trace_clock | tr  -d \[\]`; do
+  echo $c > trace_clock
+  grep '\['$c'\]' trace_clock
+done
+echo local > trace_clock
diff --git a/ftrace/test.d/kprobe/add_and_remove.tc b/ftrace/test.d/kprobe/add_and_remove.tc
new file mode 100644
index 0000000..1b8b665
--- /dev/null
+++ b/ftrace/test.d/kprobe/add_and_remove.tc
@@ -0,0 +1,11 @@
+#!/bin/sh
+# description: Kprobe dynamic event - adding and removing
+
+[ -f kprobe_events ] || exit_unsupported # this is configurable
+
+echo 0 > events/enable
+echo > kprobe_events
+echo p:myevent do_fork > kprobe_events
+grep myevent kprobe_events
+test -d events/kprobes/myevent
+echo > kprobe_events
diff --git a/ftrace/test.d/kprobe/busy_check.tc b/ftrace/test.d/kprobe/busy_check.tc
new file mode 100644
index 0000000..b55c840
--- /dev/null
+++ b/ftrace/test.d/kprobe/busy_check.tc
@@ -0,0 +1,13 @@
+#!/bin/sh
+# description: Kprobe dynamic event - busy event check
+
+[ -f kprobe_events ] || exit_unsupported
+
+echo 0 > events/enable
+echo > kprobe_events
+echo p:myevent do_fork > kprobe_events
+test -d events/kprobes/myevent
+echo 1 > events/kprobes/myevent/enable
+echo > kprobe_events && exit 1 # this must fail
+echo 0 > events/kprobes/myevent/enable
+echo > kprobe_events # this must succeed
diff --git a/ftrace/test.d/kprobe/kprobe_args.tc b/ftrace/test.d/kprobe/kprobe_args.tc
new file mode 100644
index 0000000..a603d3f
--- /dev/null
+++ b/ftrace/test.d/kprobe/kprobe_args.tc
@@ -0,0 +1,16 @@
+#!/bin/sh
+# description: Kprobe dynamic event with arguments
+
+[ -f kprobe_events ] || exit_unsupported # this is configurable
+
+echo 0 > events/enable
+echo > kprobe_events
+echo 'p:testprobe do_fork $stack $stack0 +0($stack)' > kprobe_events
+grep testprobe kprobe_events
+test -d events/kprobes/testprobe
+echo 1 > events/kprobes/testprobe/enable
+( echo "forked")
+echo 0 > events/kprobes/testprobe/enable
+echo "-:testprobe" >> kprobe_events
+test -d events/kprobes/testprobe && exit 1 || exit 0
+
diff --git a/ftrace/test.d/kprobe/kretprobe_args.tc b/ftrace/test.d/kprobe/kretprobe_args.tc
new file mode 100644
index 0000000..283c29e
--- /dev/null
+++ b/ftrace/test.d/kprobe/kretprobe_args.tc
@@ -0,0 +1,15 @@
+#!/bin/sh
+# description: Kretprobe dynamic event with arguments
+
+[ -f kprobe_events ] || exit_unsupported # this is configurable
+
+echo 0 > events/enable
+echo > kprobe_events
+echo 'r:testprobe2 do_fork $retval' > kprobe_events
+grep testprobe2 kprobe_events
+test -d events/kprobes/testprobe2
+echo 1 > events/kprobes/testprobe2/enable
+( echo "forked")
+echo 0 > events/kprobes/testprobe2/enable
+echo '-:testprobe2' >> kprobe_events
+test -d events/kprobes/testprobe2 && exit 1 || exit 0
diff --git a/ftrace/test.d/template b/ftrace/test.d/template
new file mode 100644
index 0000000..5448f7a
--- /dev/null
+++ b/ftrace/test.d/template
@@ -0,0 +1,9 @@
+#!/bin/sh
+# description: %HERE DESCRIBE WHAT THIS DOES%
+# you have to add ".tc" extention for your testcase file
+# Note that all tests are run with "errexit" option.
+
+exit 0 # Return 0 if the test is passed, otherwise return !0
+# If the test could not run because of lack of feature, call exit_unsupported
+# If the test returned unclear results, call exit_unresolved
+# If the test is a dummy, or a placeholder, call exit_untested
diff --git a/memfd/Makefile b/memfd/Makefile
index ad4ab01..b80cd10 100644
--- a/memfd/Makefile
+++ b/memfd/Makefile
@@ -1,38 +1,17 @@
-uname_M := $(shell uname -m 2>/dev/null || echo not)
-ARCH ?= $(shell echo $(uname_M) | sed -e s/i.86/i386/)
-ifeq ($(ARCH),i386)
-	ARCH := x86
-endif
-ifeq ($(ARCH),x86_64)
-	ARCH := x86
-endif
-
 CFLAGS += -D_FILE_OFFSET_BITS=64
-CFLAGS += -I../../../../arch/x86/include/generated/uapi/
-CFLAGS += -I../../../../arch/x86/include/uapi/
 CFLAGS += -I../../../../include/uapi/
 CFLAGS += -I../../../../include/
 
 all:
-ifeq ($(ARCH),x86)
 	gcc $(CFLAGS) memfd_test.c -o memfd_test
-else
-	echo "Not an x86 target, can't build memfd selftest"
-endif
 
 run_tests: all
-ifeq ($(ARCH),x86)
 	gcc $(CFLAGS) memfd_test.c -o memfd_test
-endif
 	@./memfd_test || echo "memfd_test: [FAIL]"
 
 build_fuse:
-ifeq ($(ARCH),x86)
 	gcc $(CFLAGS) fuse_mnt.c `pkg-config fuse --cflags --libs` -o fuse_mnt
 	gcc $(CFLAGS) fuse_test.c -o fuse_test
-else
-	echo "Not an x86 target, can't build memfd selftest"
-endif
 
 run_fuse: build_fuse
 	@./run_fuse_test.sh || echo "fuse_test: [FAIL]"
diff --git a/memfd/memfd_test.c b/memfd/memfd_test.c
index 3634c90..0b9eafb 100644
--- a/memfd/memfd_test.c
+++ b/memfd/memfd_test.c
@@ -59,9 +59,9 @@ static void mfd_fail_new(const char *name, unsigned int flags)
 	}
 }
 
-static __u64 mfd_assert_get_seals(int fd)
+static unsigned int mfd_assert_get_seals(int fd)
 {
-	long r;
+	int r;
 
 	r = fcntl(fd, F_GET_SEALS);
 	if (r < 0) {
@@ -69,50 +69,48 @@ static __u64 mfd_assert_get_seals(int fd)
 		abort();
 	}
 
-	return r;
+	return (unsigned int)r;
 }
 
-static void mfd_assert_has_seals(int fd, __u64 seals)
+static void mfd_assert_has_seals(int fd, unsigned int seals)
 {
-	__u64 s;
+	unsigned int s;
 
 	s = mfd_assert_get_seals(fd);
 	if (s != seals) {
-		printf("%llu != %llu = GET_SEALS(%d)\n",
-		       (unsigned long long)seals, (unsigned long long)s, fd);
+		printf("%u != %u = GET_SEALS(%d)\n", seals, s, fd);
 		abort();
 	}
 }
 
-static void mfd_assert_add_seals(int fd, __u64 seals)
+static void mfd_assert_add_seals(int fd, unsigned int seals)
 {
-	long r;
-	__u64 s;
+	int r;
+	unsigned int s;
 
 	s = mfd_assert_get_seals(fd);
 	r = fcntl(fd, F_ADD_SEALS, seals);
 	if (r < 0) {
-		printf("ADD_SEALS(%d, %llu -> %llu) failed: %m\n",
-		       fd, (unsigned long long)s, (unsigned long long)seals);
+		printf("ADD_SEALS(%d, %u -> %u) failed: %m\n", fd, s, seals);
 		abort();
 	}
 }
 
-static void mfd_fail_add_seals(int fd, __u64 seals)
+static void mfd_fail_add_seals(int fd, unsigned int seals)
 {
-	long r;
-	__u64 s;
+	int r;
+	unsigned int s;
 
 	r = fcntl(fd, F_GET_SEALS);
 	if (r < 0)
 		s = 0;
 	else
-		s = r;
+		s = (unsigned int)r;
 
 	r = fcntl(fd, F_ADD_SEALS, seals);
 	if (r >= 0) {
-		printf("ADD_SEALS(%d, %llu -> %llu) didn't fail as expected\n",
-		       fd, (unsigned long long)s, (unsigned long long)seals);
+		printf("ADD_SEALS(%d, %u -> %u) didn't fail as expected\n",
+				fd, s, seals);
 		abort();
 	}
 }
@@ -205,7 +203,7 @@ static void mfd_fail_open(int fd, int flags, mode_t mode)
 	sprintf(buf, "/proc/self/fd/%d", fd);
 	r = open(buf, flags, mode);
 	if (r >= 0) {
-		printf("open(%s) didn't fail as expected\n");
+		printf("open(%s) didn't fail as expected\n", buf);
 		abort();
 	}
 }
diff --git a/powerpc/Makefile b/powerpc/Makefile
index 74a78ce..f6ff90a 100644
--- a/powerpc/Makefile
+++ b/powerpc/Makefile
@@ -13,7 +13,7 @@ CFLAGS := -Wall -O2 -flto -Wall -Werror -DGIT_VERSION='"$(GIT_VERSION)"' -I$(CUR
 
 export CC CFLAGS
 
-TARGETS = pmu copyloops mm tm
+TARGETS = pmu copyloops mm tm primitives
 
 endif
 
diff --git a/powerpc/primitives/Makefile b/powerpc/primitives/Makefile
new file mode 100644
index 0000000..ea737ca
--- /dev/null
+++ b/powerpc/primitives/Makefile
@@ -0,0 +1,17 @@
+CFLAGS += -I$(CURDIR)
+
+PROGS := load_unaligned_zeropad
+
+all: $(PROGS)
+
+$(PROGS): ../harness.c
+
+run_tests: all
+	@-for PROG in $(PROGS); do \
+		./$$PROG; \
+	done;
+
+clean:
+	rm -f $(PROGS) *.o
+
+.PHONY: all run_tests clean
diff --git a/powerpc/primitives/asm/asm-compat.h b/powerpc/primitives/asm/asm-compat.h
new file mode 120000
index 0000000..b14255e
--- /dev/null
+++ b/powerpc/primitives/asm/asm-compat.h
@@ -0,0 +1 @@
+../.././../../../../arch/powerpc/include/asm/asm-compat.h
\ No newline at end of file
diff --git a/powerpc/primitives/asm/ppc-opcode.h b/powerpc/primitives/asm/ppc-opcode.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/powerpc/primitives/asm/ppc-opcode.h
diff --git a/powerpc/primitives/load_unaligned_zeropad.c b/powerpc/primitives/load_unaligned_zeropad.c
new file mode 100644
index 0000000..d1b6475
--- /dev/null
+++ b/powerpc/primitives/load_unaligned_zeropad.c
@@ -0,0 +1,147 @@
+/*
+ * Userspace test harness for load_unaligned_zeropad. Creates two
+ * pages and uses mprotect to prevent access to the second page and
+ * a SEGV handler that walks the exception tables and runs the fixup
+ * routine.
+ *
+ * The results are compared against a normal load that is that is
+ * performed while access to the second page is enabled via mprotect.
+ *
+ * Copyright (C) 2014 Anton Blanchard <anton@au.ibm.com>, IBM
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdbool.h>
+#include <signal.h>
+#include <unistd.h>
+#include <sys/mman.h>
+
+#define FIXUP_SECTION ".ex_fixup"
+
+#include "word-at-a-time.h"
+
+#include "utils.h"
+
+
+static int page_size;
+static char *mem_region;
+
+static int protect_region(void)
+{
+	if (mprotect(mem_region + page_size, page_size, PROT_NONE)) {
+		perror("mprotect");
+		return 1;
+	}
+
+	return 0;
+}
+
+static int unprotect_region(void)
+{
+	if (mprotect(mem_region + page_size, page_size, PROT_READ|PROT_WRITE)) {
+		perror("mprotect");
+		return 1;
+	}
+
+	return 0;
+}
+
+extern char __start___ex_table[];
+extern char __stop___ex_table[];
+
+#if defined(__powerpc64__)
+#define UCONTEXT_NIA(UC)	(UC)->uc_mcontext.gp_regs[PT_NIP]
+#elif defined(__powerpc__)
+#define UCONTEXT_NIA(UC)	(UC)->uc_mcontext.uc_regs->gregs[PT_NIP]
+#else
+#error implement UCONTEXT_NIA
+#endif
+
+static int segv_error;
+
+static void segv_handler(int signr, siginfo_t *info, void *ptr)
+{
+	ucontext_t *uc = (ucontext_t *)ptr;
+	unsigned long addr = (unsigned long)info->si_addr;
+	unsigned long *ip = &UCONTEXT_NIA(uc);
+	unsigned long *ex_p = (unsigned long *)__start___ex_table;
+
+	while (ex_p < (unsigned long *)__stop___ex_table) {
+		unsigned long insn, fixup;
+
+		insn = *ex_p++;
+		fixup = *ex_p++;
+
+		if (insn == *ip) {
+			*ip = fixup;
+			return;
+		}
+	}
+
+	printf("No exception table match for NIA %lx ADDR %lx\n", *ip, addr);
+	segv_error++;
+}
+
+static void setup_segv_handler(void)
+{
+	struct sigaction action;
+
+	memset(&action, 0, sizeof(action));
+	action.sa_sigaction = segv_handler;
+	action.sa_flags = SA_SIGINFO;
+	sigaction(SIGSEGV, &action, NULL);
+}
+
+static int do_one_test(char *p, int page_offset)
+{
+	unsigned long should;
+	unsigned long got;
+
+	FAIL_IF(unprotect_region());
+	should = *(unsigned long *)p;
+	FAIL_IF(protect_region());
+
+	got = load_unaligned_zeropad(p);
+
+	if (should != got)
+		printf("offset %u load_unaligned_zeropad returned 0x%lx, should be 0x%lx\n", page_offset, got, should);
+
+	return 0;
+}
+
+static int test_body(void)
+{
+	unsigned long i;
+
+	page_size = getpagesize();
+	mem_region = mmap(NULL, page_size * 2, PROT_READ|PROT_WRITE,
+		MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
+
+	FAIL_IF(mem_region == MAP_FAILED);
+
+	for (i = 0; i < page_size; i++)
+		mem_region[i] = i;
+
+	memset(mem_region+page_size, 0, page_size);
+
+	setup_segv_handler();
+
+	for (i = 0; i < page_size; i++)
+		FAIL_IF(do_one_test(mem_region+i, i));
+
+	FAIL_IF(segv_error);
+
+	return 0;
+}
+
+int main(void)
+{
+	return test_harness(test_body, "load_unaligned_zeropad");
+}
diff --git a/powerpc/primitives/word-at-a-time.h b/powerpc/primitives/word-at-a-time.h
new file mode 120000
index 0000000..eb74401
--- /dev/null
+++ b/powerpc/primitives/word-at-a-time.h
@@ -0,0 +1 @@
+../../../../../arch/powerpc/include/asm/word-at-a-time.h
\ No newline at end of file
diff --git a/rcutorture/bin/config2frag.sh b/rcutorture/bin/config2frag.sh
index 9f9ffcd..56f51ae 100644..100755
--- a/rcutorture/bin/config2frag.sh
+++ b/rcutorture/bin/config2frag.sh
@@ -1,5 +1,5 @@
-#!/bin/sh
-# Usage: sh config2frag.sh < .config > configfrag
+#!/bin/bash
+# Usage: config2frag.sh < .config > configfrag
 #
 # Converts the "# CONFIG_XXX is not set" to "CONFIG_XXX=n" so that the
 # resulting file becomes a legitimate Kconfig fragment.
diff --git a/rcutorture/bin/configcheck.sh b/rcutorture/bin/configcheck.sh
index d686537..eee31e2 100755
--- a/rcutorture/bin/configcheck.sh
+++ b/rcutorture/bin/configcheck.sh
@@ -1,5 +1,5 @@
-#!/bin/sh
-# Usage: sh configcheck.sh .config .config-template
+#!/bin/bash
+# Usage: configcheck.sh .config .config-template
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/rcutorture/bin/configinit.sh b/rcutorture/bin/configinit.sh
index 9c3f3d3..15f1a17 100755
--- a/rcutorture/bin/configinit.sh
+++ b/rcutorture/bin/configinit.sh
@@ -1,6 +1,6 @@
-#!/bin/sh
+#!/bin/bash
 #
-# sh configinit.sh config-spec-file [ build output dir ]
+# Usage: configinit.sh config-spec-file [ build output dir ]
 #
 # Create a .config file from the spec file.  Run from the kernel source tree.
 # Exits with 0 if all went well, with 1 if all went well but the config
diff --git a/rcutorture/bin/functions.sh b/rcutorture/bin/functions.sh
index d01b865..b325470 100644
--- a/rcutorture/bin/functions.sh
+++ b/rcutorture/bin/functions.sh
@@ -64,6 +64,26 @@ configfrag_boot_params () {
 	fi
 }
 
+# configfrag_boot_cpus bootparam-string config-fragment-file config-cpus
+#
+# Decreases number of CPUs based on any maxcpus= boot parameters specified.
+configfrag_boot_cpus () {
+	local bootargs="`configfrag_boot_params "$1" "$2"`"
+	local maxcpus
+	if echo "${bootargs}" | grep -q 'maxcpus=[0-9]'
+	then
+		maxcpus="`echo "${bootargs}" | sed -e 's/^.*maxcpus=\([0-9]*\).*$/\1/'`"
+		if test "$3" -gt "$maxcpus"
+		then
+			echo $maxcpus
+		else
+			echo $3
+		fi
+	else
+		echo $3
+	fi
+}
+
 # configfrag_hotplug_cpu config-fragment-file
 #
 # Returns 1 if the config fragment specifies hotplug CPU.
diff --git a/rcutorture/bin/kvm-build.sh b/rcutorture/bin/kvm-build.sh
index 7c1e56b..00cb0db 100755
--- a/rcutorture/bin/kvm-build.sh
+++ b/rcutorture/bin/kvm-build.sh
@@ -2,7 +2,7 @@
 #
 # Build a kvm-ready Linux kernel from the tree in the current directory.
 #
-# Usage: sh kvm-build.sh config-template build-dir more-configs
+# Usage: kvm-build.sh config-template build-dir more-configs
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/rcutorture/bin/kvm-recheck-lock.sh b/rcutorture/bin/kvm-recheck-lock.sh
index 7f1ff1a..43f7640 100755
--- a/rcutorture/bin/kvm-recheck-lock.sh
+++ b/rcutorture/bin/kvm-recheck-lock.sh
@@ -2,7 +2,7 @@
 #
 # Analyze a given results directory for locktorture progress.
 #
-# Usage: sh kvm-recheck-lock.sh resdir
+# Usage: kvm-recheck-lock.sh resdir
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/rcutorture/bin/kvm-recheck-rcu.sh b/rcutorture/bin/kvm-recheck-rcu.sh
index 307c4b9..d6cc07f 100755
--- a/rcutorture/bin/kvm-recheck-rcu.sh
+++ b/rcutorture/bin/kvm-recheck-rcu.sh
@@ -2,7 +2,7 @@
 #
 # Analyze a given results directory for rcutorture progress.
 #
-# Usage: sh kvm-recheck-rcu.sh resdir
+# Usage: kvm-recheck-rcu.sh resdir
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/rcutorture/bin/kvm-recheck.sh b/rcutorture/bin/kvm-recheck.sh
index 3f6c9b7..4f5b20f 100755
--- a/rcutorture/bin/kvm-recheck.sh
+++ b/rcutorture/bin/kvm-recheck.sh
@@ -4,7 +4,7 @@
 # check the build and console output for errors.  Given a directory
 # containing results directories, this recursively checks them all.
 #
-# Usage: sh kvm-recheck.sh resdir ...
+# Usage: kvm-recheck.sh resdir ...
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/rcutorture/bin/kvm-test-1-run.sh b/rcutorture/bin/kvm-test-1-run.sh
index 0f69dcb..f6b2b47 100755
--- a/rcutorture/bin/kvm-test-1-run.sh
+++ b/rcutorture/bin/kvm-test-1-run.sh
@@ -6,7 +6,7 @@
 # Execute this in the source tree.  Do not run it as a background task
 # because qemu does not seem to like that much.
 #
-# Usage: sh kvm-test-1-run.sh config builddir resdir minutes qemu-args boot_args
+# Usage: kvm-test-1-run.sh config builddir resdir minutes qemu-args boot_args
 #
 # qemu-args defaults to "-nographic", along with arguments specifying the
 #			number of CPUs and other options generated from
@@ -140,6 +140,7 @@ fi
 # Generate -smp qemu argument.
 qemu_args="-nographic $qemu_args"
 cpu_count=`configNR_CPUS.sh $config_template`
+cpu_count=`configfrag_boot_cpus "$boot_args" "$config_template" "$cpu_count"`
 vcpus=`identify_qemu_vcpus`
 if test $cpu_count -gt $vcpus
 then
@@ -214,7 +215,7 @@ then
 		fi
 		if test $kruntime -ge $((seconds + grace))
 		then
-			echo "!!! Hang at $kruntime vs. $seconds seconds" >> $resdir/Warnings 2>&1
+			echo "!!! PID $qemu_pid hung at $kruntime vs. $seconds seconds" >> $resdir/Warnings 2>&1
 			kill -KILL $qemu_pid
 			break
 		fi
diff --git a/rcutorture/bin/kvm.sh b/rcutorture/bin/kvm.sh
index 589e9c3..e527dc9 100644..100755
--- a/rcutorture/bin/kvm.sh
+++ b/rcutorture/bin/kvm.sh
@@ -7,7 +7,7 @@
 # Edit the definitions below to set the locations of the various directories,
 # as well as the test duration.
 #
-# Usage: sh kvm.sh [ options ]
+# Usage: kvm.sh [ options ]
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -188,7 +188,9 @@ for CF in $configs
 do
 	if test -f "$CONFIGFRAG/$kversion/$CF"
 	then
-		echo $CF `configNR_CPUS.sh $CONFIGFRAG/$kversion/$CF` >> $T/cfgcpu
+		cpu_count=`configNR_CPUS.sh $CONFIGFRAG/$kversion/$CF`
+		cpu_count=`configfrag_boot_cpus "$TORTURE_BOOTARGS" "$CONFIGFRAG/$kversion/$CF" "$cpu_count"`
+		echo $CF $cpu_count >> $T/cfgcpu
 	else
 		echo "The --configs file $CF does not exist, terminating."
 		exit 1
diff --git a/rcutorture/bin/parse-build.sh b/rcutorture/bin/parse-build.sh
index 5432309..499d1e5 100755
--- a/rcutorture/bin/parse-build.sh
+++ b/rcutorture/bin/parse-build.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 #
 # Check the build output from an rcutorture run for goodness.
 # The "file" is a pathname on the local system, and "title" is
@@ -6,8 +6,7 @@
 #
 # The file must contain kernel build output.
 #
-# Usage:
-#	sh parse-build.sh file title
+# Usage: parse-build.sh file title
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/rcutorture/bin/parse-console.sh b/rcutorture/bin/parse-console.sh
index 4185d4c..f962ba4 100755
--- a/rcutorture/bin/parse-console.sh
+++ b/rcutorture/bin/parse-console.sh
@@ -1,11 +1,10 @@
-#!/bin/sh
+#!/bin/bash
 #
 # Check the console output from an rcutorture run for oopses.
 # The "file" is a pathname on the local system, and "title" is
 # a text string for error-message purposes.
 #
-# Usage:
-#	sh parse-console.sh file title
+# Usage: parse-console.sh file title
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -33,6 +32,10 @@ title="$2"
 
 . functions.sh
 
+if grep -Pq '\x00' < $file
+then
+	print_warning Console output contains nul bytes, old qemu still running?
+fi
 egrep 'Badness|WARNING:|Warn|BUG|===========|Call Trace:|Oops:' < $file | grep -v 'ODEBUG: ' | grep -v 'Warning: unable to open an initial console' > $T
 if test -s $T
 then
diff --git a/rcutorture/bin/parse-torture.sh b/rcutorture/bin/parse-torture.sh
index 3455560..e3c5f07 100755
--- a/rcutorture/bin/parse-torture.sh
+++ b/rcutorture/bin/parse-torture.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 #
 # Check the console output from a torture run for goodness.
 # The "file" is a pathname on the local system, and "title" is
@@ -7,8 +7,7 @@
 # The file must contain torture output, but can be interspersed
 # with other dmesg text, as in console-log output.
 #
-# Usage:
-#	sh parse-torture.sh file title
+# Usage: parse-torture.sh file title
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/rcutorture/configs/lock/CFLIST b/rcutorture/configs/lock/CFLIST
index a061b22..6910b73 100644
--- a/rcutorture/configs/lock/CFLIST
+++ b/rcutorture/configs/lock/CFLIST
@@ -1 +1,4 @@
 LOCK01
+LOCK02
+LOCK03
+LOCK04
\ No newline at end of file
diff --git a/rcutorture/configs/lock/LOCK02 b/rcutorture/configs/lock/LOCK02
new file mode 100644
index 0000000..1d1da14
--- /dev/null
+++ b/rcutorture/configs/lock/LOCK02
@@ -0,0 +1,6 @@
+CONFIG_SMP=y
+CONFIG_NR_CPUS=4
+CONFIG_HOTPLUG_CPU=y
+CONFIG_PREEMPT_NONE=n
+CONFIG_PREEMPT_VOLUNTARY=n
+CONFIG_PREEMPT=y
diff --git a/rcutorture/configs/lock/LOCK02.boot b/rcutorture/configs/lock/LOCK02.boot
new file mode 100644
index 0000000..5aa44b4
--- /dev/null
+++ b/rcutorture/configs/lock/LOCK02.boot
@@ -0,0 +1 @@
+locktorture.torture_type=mutex_lock
diff --git a/rcutorture/configs/lock/LOCK03 b/rcutorture/configs/lock/LOCK03
new file mode 100644
index 0000000..1d1da14
--- /dev/null
+++ b/rcutorture/configs/lock/LOCK03
@@ -0,0 +1,6 @@
+CONFIG_SMP=y
+CONFIG_NR_CPUS=4
+CONFIG_HOTPLUG_CPU=y
+CONFIG_PREEMPT_NONE=n
+CONFIG_PREEMPT_VOLUNTARY=n
+CONFIG_PREEMPT=y
diff --git a/rcutorture/configs/lock/LOCK03.boot b/rcutorture/configs/lock/LOCK03.boot
new file mode 100644
index 0000000..a67bbe0
--- /dev/null
+++ b/rcutorture/configs/lock/LOCK03.boot
@@ -0,0 +1 @@
+locktorture.torture_type=rwsem_lock
diff --git a/rcutorture/configs/lock/LOCK04 b/rcutorture/configs/lock/LOCK04
new file mode 100644
index 0000000..1d1da14
--- /dev/null
+++ b/rcutorture/configs/lock/LOCK04
@@ -0,0 +1,6 @@
+CONFIG_SMP=y
+CONFIG_NR_CPUS=4
+CONFIG_HOTPLUG_CPU=y
+CONFIG_PREEMPT_NONE=n
+CONFIG_PREEMPT_VOLUNTARY=n
+CONFIG_PREEMPT=y
diff --git a/rcutorture/configs/lock/LOCK04.boot b/rcutorture/configs/lock/LOCK04.boot
new file mode 100644
index 0000000..48c04fe
--- /dev/null
+++ b/rcutorture/configs/lock/LOCK04.boot
@@ -0,0 +1 @@
+locktorture.torture_type=rw_lock
diff --git a/rcutorture/configs/lock/ver_functions.sh b/rcutorture/configs/lock/ver_functions.sh
index 9746ea1..252aae6 100644
--- a/rcutorture/configs/lock/ver_functions.sh
+++ b/rcutorture/configs/lock/ver_functions.sh
@@ -38,6 +38,6 @@ per_version_boot_params () {
 	echo $1 `locktorture_param_onoff "$1" "$2"` \
 		locktorture.stat_interval=15 \
 		locktorture.shutdown_secs=$3 \
-		locktorture.locktorture_runnable=1 \
+		locktorture.torture_runnable=1 \
 		locktorture.verbose=1
 }
diff --git a/rcutorture/configs/rcu/CFLIST b/rcutorture/configs/rcu/CFLIST
index cd3d29c..a3a1a05 100644
--- a/rcutorture/configs/rcu/CFLIST
+++ b/rcutorture/configs/rcu/CFLIST
@@ -11,3 +11,6 @@ SRCU-N
 SRCU-P
 TINY01
 TINY02
+TASKS01
+TASKS02
+TASKS03
diff --git a/rcutorture/configs/rcu/TASKS01 b/rcutorture/configs/rcu/TASKS01
new file mode 100644
index 0000000..97f0a0b
--- /dev/null
+++ b/rcutorture/configs/rcu/TASKS01
@@ -0,0 +1,9 @@
+CONFIG_SMP=y
+CONFIG_NR_CPUS=2
+CONFIG_HOTPLUG_CPU=y
+CONFIG_PREEMPT_NONE=n
+CONFIG_PREEMPT_VOLUNTARY=n
+CONFIG_PREEMPT=y
+CONFIG_DEBUG_LOCK_ALLOC=y
+CONFIG_PROVE_RCU=y
+CONFIG_TASKS_RCU=y
diff --git a/rcutorture/configs/rcu/TASKS01.boot b/rcutorture/configs/rcu/TASKS01.boot
new file mode 100644
index 0000000..cd2a188
--- /dev/null
+++ b/rcutorture/configs/rcu/TASKS01.boot
@@ -0,0 +1 @@
+rcutorture.torture_type=tasks
diff --git a/rcutorture/configs/rcu/TASKS02 b/rcutorture/configs/rcu/TASKS02
new file mode 100644
index 0000000..696d2ea
--- /dev/null
+++ b/rcutorture/configs/rcu/TASKS02
@@ -0,0 +1,5 @@
+CONFIG_SMP=n
+CONFIG_PREEMPT_NONE=y
+CONFIG_PREEMPT_VOLUNTARY=n
+CONFIG_PREEMPT=n
+CONFIG_TASKS_RCU=y
diff --git a/rcutorture/configs/rcu/TASKS02.boot b/rcutorture/configs/rcu/TASKS02.boot
new file mode 100644
index 0000000..cd2a188
--- /dev/null
+++ b/rcutorture/configs/rcu/TASKS02.boot
@@ -0,0 +1 @@
+rcutorture.torture_type=tasks
diff --git a/rcutorture/configs/rcu/TASKS03 b/rcutorture/configs/rcu/TASKS03
new file mode 100644
index 0000000..9c60da5
--- /dev/null
+++ b/rcutorture/configs/rcu/TASKS03
@@ -0,0 +1,13 @@
+CONFIG_SMP=y
+CONFIG_NR_CPUS=2
+CONFIG_HOTPLUG_CPU=n
+CONFIG_SUSPEND=n
+CONFIG_HIBERNATION=n
+CONFIG_PREEMPT_NONE=n
+CONFIG_PREEMPT_VOLUNTARY=n
+CONFIG_PREEMPT=y
+CONFIG_TASKS_RCU=y
+CONFIG_HZ_PERIODIC=n
+CONFIG_NO_HZ_IDLE=n
+CONFIG_NO_HZ_FULL=y
+CONFIG_NO_HZ_FULL_ALL=y
diff --git a/rcutorture/configs/rcu/TASKS03.boot b/rcutorture/configs/rcu/TASKS03.boot
new file mode 100644
index 0000000..cd2a188
--- /dev/null
+++ b/rcutorture/configs/rcu/TASKS03.boot
@@ -0,0 +1 @@
+rcutorture.torture_type=tasks
diff --git a/rcutorture/configs/rcu/TREE01 b/rcutorture/configs/rcu/TREE01
index 063b707..38e3895 100644
--- a/rcutorture/configs/rcu/TREE01
+++ b/rcutorture/configs/rcu/TREE01
@@ -1,5 +1,4 @@
 CONFIG_SMP=y
-CONFIG_NR_CPUS=8
 CONFIG_PREEMPT_NONE=n
 CONFIG_PREEMPT_VOLUNTARY=n
 CONFIG_PREEMPT=y
@@ -10,8 +9,7 @@ CONFIG_NO_HZ_FULL=n
 CONFIG_RCU_FAST_NO_HZ=y
 CONFIG_RCU_TRACE=y
 CONFIG_HOTPLUG_CPU=y
-CONFIG_RCU_FANOUT=8
-CONFIG_RCU_FANOUT_EXACT=n
+CONFIG_MAXSMP=y
 CONFIG_RCU_NOCB_CPU=y
 CONFIG_RCU_NOCB_CPU_ZERO=y
 CONFIG_DEBUG_LOCK_ALLOC=n
diff --git a/rcutorture/configs/rcu/TREE01.boot b/rcutorture/configs/rcu/TREE01.boot
index 0fc8a34..adc3abc 100644
--- a/rcutorture/configs/rcu/TREE01.boot
+++ b/rcutorture/configs/rcu/TREE01.boot
@@ -1 +1 @@
-rcutorture.torture_type=rcu_bh
+rcutorture.torture_type=rcu_bh maxcpus=8
diff --git a/rcutorture/configs/rcu/TREE07 b/rcutorture/configs/rcu/TREE07
index ab62255..8f10176 100644
--- a/rcutorture/configs/rcu/TREE07
+++ b/rcutorture/configs/rcu/TREE07
@@ -1,5 +1,6 @@
 CONFIG_SMP=y
 CONFIG_NR_CPUS=16
+CONFIG_CPUMASK_OFFSTACK=y
 CONFIG_PREEMPT_NONE=y
 CONFIG_PREEMPT_VOLUNTARY=n
 CONFIG_PREEMPT=n
@@ -7,7 +8,7 @@ CONFIG_PREEMPT=n
 CONFIG_HZ_PERIODIC=n
 CONFIG_NO_HZ_IDLE=n
 CONFIG_NO_HZ_FULL=y
-CONFIG_NO_HZ_FULL_ALL=y
+CONFIG_NO_HZ_FULL_ALL=n
 CONFIG_NO_HZ_FULL_SYSIDLE=y
 CONFIG_RCU_FAST_NO_HZ=n
 CONFIG_RCU_TRACE=y
diff --git a/rcutorture/configs/rcu/TREE07.boot b/rcutorture/configs/rcu/TREE07.boot
new file mode 100644
index 0000000..d446099
--- /dev/null
+++ b/rcutorture/configs/rcu/TREE07.boot
@@ -0,0 +1 @@
+nohz_full=2-9
diff --git a/rcutorture/configs/rcu/ver_functions.sh b/rcutorture/configs/rcu/ver_functions.sh
index 8977d8d..ffb85ed 100644
--- a/rcutorture/configs/rcu/ver_functions.sh
+++ b/rcutorture/configs/rcu/ver_functions.sh
@@ -51,7 +51,7 @@ per_version_boot_params () {
 		`rcutorture_param_n_barrier_cbs "$1"` \
 		rcutorture.stat_interval=15 \
 		rcutorture.shutdown_secs=$3 \
-		rcutorture.rcutorture_runnable=1 \
+		rcutorture.torture_runnable=1 \
 		rcutorture.test_no_idle_hz=1 \
 		rcutorture.verbose=1
 }
diff --git a/rcutorture/doc/initrd.txt b/rcutorture/doc/initrd.txt
index 49d134c..4170e71 100644
--- a/rcutorture/doc/initrd.txt
+++ b/rcutorture/doc/initrd.txt
@@ -6,6 +6,7 @@ this case.  There are probably much better ways of doing this.
 That said, here are the commands:
 
 ------------------------------------------------------------------------
+cd tools/testing/selftests/rcutorture
 zcat /initrd.img > /tmp/initrd.img.zcat
 mkdir initrd
 cd initrd
diff --git a/vm/Makefile b/vm/Makefile
index 3f94e1a..4c4b1f6 100644
--- a/vm/Makefile
+++ b/vm/Makefile
@@ -3,6 +3,7 @@
 CC = $(CROSS_COMPILE)gcc
 CFLAGS = -Wall
 BINARIES = hugepage-mmap hugepage-shm map_hugetlb thuge-gen hugetlbfstest
+BINARIES += transhuge-stress
 
 all: $(BINARIES)
 %: %.c
diff --git a/vm/transhuge-stress.c b/vm/transhuge-stress.c
new file mode 100644
index 0000000..fd7f1b4
--- /dev/null
+++ b/vm/transhuge-stress.c
@@ -0,0 +1,144 @@
+/*
+ * Stress test for transparent huge pages, memory compaction and migration.
+ *
+ * Authors: Konstantin Khlebnikov <koct9i@gmail.com>
+ *
+ * This is free and unencumbered software released into the public domain.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <err.h>
+#include <time.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+#include <sys/mman.h>
+
+#define PAGE_SHIFT 12
+#define HPAGE_SHIFT 21
+
+#define PAGE_SIZE (1 << PAGE_SHIFT)
+#define HPAGE_SIZE (1 << HPAGE_SHIFT)
+
+#define PAGEMAP_PRESENT(ent)	(((ent) & (1ull << 63)) != 0)
+#define PAGEMAP_PFN(ent)	((ent) & ((1ull << 55) - 1))
+
+int pagemap_fd;
+
+int64_t allocate_transhuge(void *ptr)
+{
+	uint64_t ent[2];
+
+	/* drop pmd */
+	if (mmap(ptr, HPAGE_SIZE, PROT_READ | PROT_WRITE,
+				MAP_FIXED | MAP_ANONYMOUS |
+				MAP_NORESERVE | MAP_PRIVATE, -1, 0) != ptr)
+		errx(2, "mmap transhuge");
+
+	if (madvise(ptr, HPAGE_SIZE, MADV_HUGEPAGE))
+		err(2, "MADV_HUGEPAGE");
+
+	/* allocate transparent huge page */
+	*(volatile void **)ptr = ptr;
+
+	if (pread(pagemap_fd, ent, sizeof(ent),
+			(uintptr_t)ptr >> (PAGE_SHIFT - 3)) != sizeof(ent))
+		err(2, "read pagemap");
+
+	if (PAGEMAP_PRESENT(ent[0]) && PAGEMAP_PRESENT(ent[1]) &&
+	    PAGEMAP_PFN(ent[0]) + 1 == PAGEMAP_PFN(ent[1]) &&
+	    !(PAGEMAP_PFN(ent[0]) & ((1 << (HPAGE_SHIFT - PAGE_SHIFT)) - 1)))
+		return PAGEMAP_PFN(ent[0]);
+
+	return -1;
+}
+
+int main(int argc, char **argv)
+{
+	size_t ram, len;
+	void *ptr, *p;
+	struct timespec a, b;
+	double s;
+	uint8_t *map;
+	size_t map_len;
+
+	ram = sysconf(_SC_PHYS_PAGES);
+	if (ram > SIZE_MAX / sysconf(_SC_PAGESIZE) / 4)
+		ram = SIZE_MAX / 4;
+	else
+		ram *= sysconf(_SC_PAGESIZE);
+
+	if (argc == 1)
+		len = ram;
+	else if (!strcmp(argv[1], "-h"))
+		errx(1, "usage: %s [size in MiB]", argv[0]);
+	else
+		len = atoll(argv[1]) << 20;
+
+	warnx("allocate %zd transhuge pages, using %zd MiB virtual memory"
+	      " and %zd MiB of ram", len >> HPAGE_SHIFT, len >> 20,
+	      len >> (20 + HPAGE_SHIFT - PAGE_SHIFT - 1));
+
+	pagemap_fd = open("/proc/self/pagemap", O_RDONLY);
+	if (pagemap_fd < 0)
+		err(2, "open pagemap");
+
+	len -= len % HPAGE_SIZE;
+	ptr = mmap(NULL, len + HPAGE_SIZE, PROT_READ | PROT_WRITE,
+			MAP_ANONYMOUS | MAP_NORESERVE | MAP_PRIVATE, -1, 0);
+	if (ptr == MAP_FAILED)
+		err(2, "initial mmap");
+	ptr += HPAGE_SIZE - (uintptr_t)ptr % HPAGE_SIZE;
+
+	if (madvise(ptr, len, MADV_HUGEPAGE))
+		err(2, "MADV_HUGEPAGE");
+
+	map_len = ram >> (HPAGE_SHIFT - 1);
+	map = malloc(map_len);
+	if (!map)
+		errx(2, "map malloc");
+
+	while (1) {
+		int nr_succeed = 0, nr_failed = 0, nr_pages = 0;
+
+		memset(map, 0, map_len);
+
+		clock_gettime(CLOCK_MONOTONIC, &a);
+		for (p = ptr; p < ptr + len; p += HPAGE_SIZE) {
+			int64_t pfn;
+
+			pfn = allocate_transhuge(p);
+
+			if (pfn < 0) {
+				nr_failed++;
+			} else {
+				size_t idx = pfn >> (HPAGE_SHIFT - PAGE_SHIFT);
+
+				nr_succeed++;
+				if (idx >= map_len) {
+					map = realloc(map, idx + 1);
+					if (!map)
+						errx(2, "map realloc");
+					memset(map + map_len, 0, idx + 1 - map_len);
+					map_len = idx + 1;
+				}
+				if (!map[idx])
+					nr_pages++;
+				map[idx] = 1;
+			}
+
+			/* split transhuge page, keep last page */
+			if (madvise(p, HPAGE_SIZE - PAGE_SIZE, MADV_DONTNEED))
+				err(2, "MADV_DONTNEED");
+		}
+		clock_gettime(CLOCK_MONOTONIC, &b);
+		s = b.tv_sec - a.tv_sec + (b.tv_nsec - a.tv_nsec) / 1000000000.;
+
+		warnx("%.3f s/loop, %.3f ms/page, %10.3f MiB/s\t"
+		      "%4d succeed, %4d failed, %4d different pages",
+		      s, s * 1000 / (len >> HPAGE_SHIFT), len / s / (1 << 20),
+		      nr_succeed, nr_failed, nr_pages);
+	}
+}