Merge branch 'next' into for-linus

Merge first round of changes for 3.13 merge window.

22 files changed, 938 insertions, 47 deletions

diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl
index 0d7fd8b51544..999eab1bc64f 100755
--- a/tools/testing/ktest/ktest.pl
+++ b/tools/testing/ktest/ktest.pl
@@ -1796,7 +1796,7 @@ sub monitor {
 		# We already booted into the kernel we are testing,
 		# but now we booted into another kernel?
 		# Consider this a triple fault.
-		doprint "Aleady booted in Linux kernel $version, but now\n";
+		doprint "Already booted in Linux kernel $version, but now\n";
 		doprint "we booted into Linux kernel $1.\n";
 		doprint "Assuming that this is a triple fault.\n";
 		doprint "To disable this: set DETECT_TRIPLE_FAULT to 0\n";
diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index 0a63658065f0..9f3eae290900 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -6,7 +6,9 @@ TARGETS += memory-hotplug
 TARGETS += mqueue
 TARGETS += net
 TARGETS += ptrace
+TARGETS += timers
 TARGETS += vm
+TARGETS += powerpc
 
 all:
 	for TARGET in $(TARGETS); do \
diff --git a/tools/testing/selftests/cpu-hotplug/Makefile b/tools/testing/selftests/cpu-hotplug/Makefile
index 12657a5e4bf9..ae5faf9aade2 100644
--- a/tools/testing/selftests/cpu-hotplug/Makefile
+++ b/tools/testing/selftests/cpu-hotplug/Makefile
@@ -1,6 +1,6 @@
 all:
 
 run_tests:
-	@./on-off-test.sh || echo "cpu-hotplug selftests: [FAIL]"
+	@/bin/sh ./on-off-test.sh || echo "cpu-hotplug selftests: [FAIL]"
 
 clean:
diff --git a/tools/testing/selftests/kcmp/.gitignore b/tools/testing/selftests/kcmp/.gitignore
new file mode 100644
index 000000000000..5a9b3732b2de
--- /dev/null
+++ b/tools/testing/selftests/kcmp/.gitignore
@@ -0,0 +1,2 @@
+kcmp_test
+kcmp-test-file
diff --git a/tools/testing/selftests/kcmp/Makefile b/tools/testing/selftests/kcmp/Makefile
index 56eb5523dbb8..d7d6bbeeff2f 100644
--- a/tools/testing/selftests/kcmp/Makefile
+++ b/tools/testing/selftests/kcmp/Makefile
@@ -25,5 +25,4 @@ run_tests: all
 	@./kcmp_test || echo "kcmp_test: [FAIL]"
 
 clean:
-	rm -fr ./run_test
-	rm -fr ./test-file
+	$(RM) kcmp_test kcmp-test-file
diff --git a/tools/testing/selftests/memory-hotplug/Makefile b/tools/testing/selftests/memory-hotplug/Makefile
index 0f49c3f5f58d..350bfeda3aa8 100644
--- a/tools/testing/selftests/memory-hotplug/Makefile
+++ b/tools/testing/selftests/memory-hotplug/Makefile
@@ -1,6 +1,6 @@
 all:
 
 run_tests:
-	@./on-off-test.sh || echo "memory-hotplug selftests: [FAIL]"
+	@/bin/sh ./on-off-test.sh || echo "memory-hotplug selftests: [FAIL]"
 
 clean:
diff --git a/tools/testing/selftests/net/psock_tpacket.c b/tools/testing/selftests/net/psock_tpacket.c
index c41b58640a05..24adf709bd9d 100644
--- a/tools/testing/selftests/net/psock_tpacket.c
+++ b/tools/testing/selftests/net/psock_tpacket.c
@@ -1,6 +1,7 @@
 /*
  * Copyright 2013 Red Hat, Inc.
  * Author: Daniel Borkmann <dborkman@redhat.com>
+ *         Chetan Loke <loke.chetan@gmail.com> (TPACKET_V3 usage example)
  *
  * A basic test of packet socket's TPACKET_V1/TPACKET_V2/TPACKET_V3 behavior.
  *
@@ -71,18 +72,8 @@
 # define __align_tpacket(x)	__attribute__((aligned(TPACKET_ALIGN(x))))
 #endif
 
-#define BLOCK_STATUS(x)		((x)->h1.block_status)
-#define BLOCK_NUM_PKTS(x)	((x)->h1.num_pkts)
-#define BLOCK_O2FP(x)		((x)->h1.offset_to_first_pkt)
-#define BLOCK_LEN(x)		((x)->h1.blk_len)
-#define BLOCK_SNUM(x)		((x)->h1.seq_num)
-#define BLOCK_O2PRIV(x)		((x)->offset_to_priv)
-#define BLOCK_PRIV(x)		((void *) ((uint8_t *) (x) + BLOCK_O2PRIV(x)))
-#define BLOCK_HDR_LEN		(ALIGN_8(sizeof(struct block_desc)))
-#define ALIGN_8(x)		(((x) + 8 - 1) & ~(8 - 1))
-#define BLOCK_PLUS_PRIV(sz_pri)	(BLOCK_HDR_LEN + ALIGN_8((sz_pri)))
-
 #define NUM_PACKETS		100
+#define ALIGN_8(x)		(((x) + 8 - 1) & ~(8 - 1))
 
 struct ring {
 	struct iovec *rd;
@@ -476,41 +467,30 @@ static uint64_t __v3_prev_block_seq_num = 0;
 
 void __v3_test_block_seq_num(struct block_desc *pbd)
 {
-	if (__v3_prev_block_seq_num + 1 != BLOCK_SNUM(pbd)) {
+	if (__v3_prev_block_seq_num + 1 != pbd->h1.seq_num) {
 		fprintf(stderr, "\nprev_block_seq_num:%"PRIu64", expected "
 			"seq:%"PRIu64" != actual seq:%"PRIu64"\n",
 			__v3_prev_block_seq_num, __v3_prev_block_seq_num + 1,
-			(uint64_t) BLOCK_SNUM(pbd));
+			(uint64_t) pbd->h1.seq_num);
 		exit(1);
 	}
 
-	__v3_prev_block_seq_num = BLOCK_SNUM(pbd);
+	__v3_prev_block_seq_num = pbd->h1.seq_num;
 }
 
 static void __v3_test_block_len(struct block_desc *pbd, uint32_t bytes, int block_num)
 {
-	if (BLOCK_NUM_PKTS(pbd)) {
-		if (bytes != BLOCK_LEN(pbd)) {
-			fprintf(stderr, "\nblock:%u with %upackets, expected "
-				"len:%u != actual len:%u\n", block_num,
-				BLOCK_NUM_PKTS(pbd), bytes, BLOCK_LEN(pbd));
-			exit(1);
-		}
-	} else {
-		if (BLOCK_LEN(pbd) != BLOCK_PLUS_PRIV(13)) {
-			fprintf(stderr, "\nblock:%u, expected len:%lu != "
-				"actual len:%u\n", block_num, BLOCK_HDR_LEN,
-				BLOCK_LEN(pbd));
-			exit(1);
-		}
+	if (pbd->h1.num_pkts && bytes != pbd->h1.blk_len) {
+		fprintf(stderr, "\nblock:%u with %upackets, expected "
+			"len:%u != actual len:%u\n", block_num,
+			pbd->h1.num_pkts, bytes, pbd->h1.blk_len);
+		exit(1);
 	}
 }
 
 static void __v3_test_block_header(struct block_desc *pbd, const int block_num)
 {
-	uint32_t block_status = BLOCK_STATUS(pbd);
-
-	if ((block_status & TP_STATUS_USER) == 0) {
+	if ((pbd->h1.block_status & TP_STATUS_USER) == 0) {
 		fprintf(stderr, "\nblock %u: not in TP_STATUS_USER\n", block_num);
 		exit(1);
 	}
@@ -520,14 +500,15 @@ static void __v3_test_block_header(struct block_desc *pbd, const int block_num)
 
 static void __v3_walk_block(struct block_desc *pbd, const int block_num)
 {
-	int num_pkts = BLOCK_NUM_PKTS(pbd), i;
-	unsigned long bytes = 0;
-	unsigned long bytes_with_padding = BLOCK_PLUS_PRIV(13);
+	int num_pkts = pbd->h1.num_pkts, i;
+	unsigned long bytes = 0, bytes_with_padding = ALIGN_8(sizeof(*pbd));
 	struct tpacket3_hdr *ppd;
 
 	__v3_test_block_header(pbd, block_num);
 
-	ppd = (struct tpacket3_hdr *) ((uint8_t *) pbd + BLOCK_O2FP(pbd));
+	ppd = (struct tpacket3_hdr *) ((uint8_t *) pbd +
+				       pbd->h1.offset_to_first_pkt);
+
 	for (i = 0; i < num_pkts; ++i) {
 		bytes += ppd->tp_snaplen;
 
@@ -551,7 +532,7 @@ static void __v3_walk_block(struct block_desc *pbd, const int block_num)
 
 void __v3_flush_block(struct block_desc *pbd)
 {
-	BLOCK_STATUS(pbd) = TP_STATUS_KERNEL;
+	pbd->h1.block_status = TP_STATUS_KERNEL;
 	__sync_synchronize();
 }
 
@@ -577,7 +558,7 @@ static void walk_v3_rx(int sock, struct ring *ring)
 	while (total_packets < NUM_PACKETS * 2) {
 		pbd = (struct block_desc *) ring->rd[block_num].iov_base;
 
-		while ((BLOCK_STATUS(pbd) & TP_STATUS_USER) == 0)
+		while ((pbd->h1.block_status & TP_STATUS_USER) == 0)
 			poll(&pfd, 1, 1);
 
 		__v3_walk_block(pbd, block_num);
@@ -624,8 +605,8 @@ static void __v1_v2_fill(struct ring *ring, unsigned int blocks)
 static void __v3_fill(struct ring *ring, unsigned int blocks)
 {
 	ring->req3.tp_retire_blk_tov = 64;
-	ring->req3.tp_sizeof_priv = 13;
-	ring->req3.tp_feature_req_word |= TP_FT_REQ_FILL_RXHASH;
+	ring->req3.tp_sizeof_priv = 0;
+	ring->req3.tp_feature_req_word = TP_FT_REQ_FILL_RXHASH;
 
 	ring->req3.tp_block_size = getpagesize() << 2;
 	ring->req3.tp_frame_size = TPACKET_ALIGNMENT << 7;
diff --git a/tools/testing/selftests/powerpc/Makefile b/tools/testing/selftests/powerpc/Makefile
new file mode 100644
index 000000000000..bd24ae5aaeab
--- /dev/null
+++ b/tools/testing/selftests/powerpc/Makefile
@@ -0,0 +1,39 @@
+# Makefile for powerpc selftests
+
+# ARCH can be overridden by the user for cross compiling
+ARCH ?= $(shell uname -m)
+ARCH := $(shell echo $(ARCH) | sed -e s/ppc.*/powerpc/)
+
+ifeq ($(ARCH),powerpc)
+
+GIT_VERSION = $(shell git describe --always --long --dirty || echo "unknown")
+
+CC := $(CROSS_COMPILE)$(CC)
+CFLAGS := -Wall -O2 -flto -Wall -Werror -DGIT_VERSION='"$(GIT_VERSION)"' -I$(CURDIR) $(CFLAGS)
+
+export CC CFLAGS
+
+TARGETS = pmu
+
+endif
+
+all:
+	@for TARGET in $(TARGETS); do \
+		$(MAKE) -C $$TARGET all; \
+	done;
+
+run_tests: all
+	@for TARGET in $(TARGETS); do \
+		$(MAKE) -C $$TARGET run_tests; \
+	done;
+
+clean:
+	@for TARGET in $(TARGETS); do \
+		$(MAKE) -C $$TARGET clean; \
+	done;
+	rm -f tags
+
+tags:
+	find . -name '*.c' -o -name '*.h' | xargs ctags
+
+.PHONY: all run_tests clean tags
diff --git a/tools/testing/selftests/powerpc/harness.c b/tools/testing/selftests/powerpc/harness.c
new file mode 100644
index 000000000000..e80c42a584fe
--- /dev/null
+++ b/tools/testing/selftests/powerpc/harness.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright 2013, Michael Ellerman, IBM Corp.
+ * Licensed under GPLv2.
+ */
+
+#include <errno.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#include "subunit.h"
+#include "utils.h"
+
+#define TIMEOUT		120
+#define KILL_TIMEOUT	5
+
+
+int run_test(int (test_function)(void), char *name)
+{
+	bool terminated;
+	int rc, status;
+	pid_t pid;
+
+	/* Make sure output is flushed before forking */
+	fflush(stdout);
+
+	pid = fork();
+	if (pid == 0) {
+		exit(test_function());
+	} else if (pid == -1) {
+		perror("fork");
+		return 1;
+	}
+
+	/* Wake us up in timeout seconds */
+	alarm(TIMEOUT);
+	terminated = false;
+
+wait:
+	rc = waitpid(pid, &status, 0);
+	if (rc == -1) {
+		if (errno != EINTR) {
+			printf("unknown error from waitpid\n");
+			return 1;
+		}
+
+		if (terminated) {
+			printf("!! force killing %s\n", name);
+			kill(pid, SIGKILL);
+			return 1;
+		} else {
+			printf("!! killing %s\n", name);
+			kill(pid, SIGTERM);
+			terminated = true;
+			alarm(KILL_TIMEOUT);
+			goto wait;
+		}
+	}
+
+	if (WIFEXITED(status))
+		status = WEXITSTATUS(status);
+	else {
+		if (WIFSIGNALED(status))
+			printf("!! child died by signal %d\n", WTERMSIG(status));
+		else
+			printf("!! child died by unknown cause\n");
+
+		status = 1; /* Signal or other */
+	}
+
+	return status;
+}
+
+static void alarm_handler(int signum)
+{
+	/* Jut wake us up from waitpid */
+}
+
+static struct sigaction alarm_action = {
+	.sa_handler = alarm_handler,
+};
+
+int test_harness(int (test_function)(void), char *name)
+{
+	int rc;
+
+	test_start(name);
+	test_set_git_version(GIT_VERSION);
+
+	if (sigaction(SIGALRM, &alarm_action, NULL)) {
+		perror("sigaction");
+		test_error(name);
+		return 1;
+	}
+
+	rc = run_test(test_function, name);
+
+	test_finish(name, rc);
+
+	return rc;
+}
diff --git a/tools/testing/selftests/powerpc/pmu/Makefile b/tools/testing/selftests/powerpc/pmu/Makefile
new file mode 100644
index 000000000000..7216f0091655
--- /dev/null
+++ b/tools/testing/selftests/powerpc/pmu/Makefile
@@ -0,0 +1,23 @@
+noarg:
+	$(MAKE) -C ../
+
+PROGS := count_instructions
+EXTRA_SOURCES := ../harness.c event.c
+
+all: $(PROGS)
+
+$(PROGS): $(EXTRA_SOURCES)
+
+# loop.S can only be built 64-bit
+count_instructions: loop.S count_instructions.c $(EXTRA_SOURCES)
+	$(CC) $(CFLAGS) -m64 -o $@ $^
+
+run_tests: all
+	@-for PROG in $(PROGS); do \
+		./$$PROG; \
+	done;
+
+clean:
+	rm -f $(PROGS) loop.o
+
+.PHONY: all run_tests clean
diff --git a/tools/testing/selftests/powerpc/pmu/count_instructions.c b/tools/testing/selftests/powerpc/pmu/count_instructions.c
new file mode 100644
index 000000000000..312b4f0fd27c
--- /dev/null
+++ b/tools/testing/selftests/powerpc/pmu/count_instructions.c
@@ -0,0 +1,135 @@
+/*
+ * Copyright 2013, Michael Ellerman, IBM Corp.
+ * Licensed under GPLv2.
+ */
+
+#define _GNU_SOURCE
+
+#include <stdio.h>
+#include <stdbool.h>
+#include <string.h>
+#include <sys/prctl.h>
+
+#include "event.h"
+#include "utils.h"
+
+extern void thirty_two_instruction_loop(u64 loops);
+
+static void setup_event(struct event *e, u64 config, char *name)
+{
+	event_init_opts(e, config, PERF_TYPE_HARDWARE, name);
+
+	e->attr.disabled = 1;
+	e->attr.exclude_kernel = 1;
+	e->attr.exclude_hv = 1;
+	e->attr.exclude_idle = 1;
+}
+
+static int do_count_loop(struct event *events, u64 instructions,
+			 u64 overhead, bool report)
+{
+	s64 difference, expected;
+	double percentage;
+
+	prctl(PR_TASK_PERF_EVENTS_ENABLE);
+
+	/* Run for 1M instructions */
+	thirty_two_instruction_loop(instructions >> 5);
+
+	prctl(PR_TASK_PERF_EVENTS_DISABLE);
+
+	event_read(&events[0]);
+	event_read(&events[1]);
+
+	expected = instructions + overhead;
+	difference = events[0].result.value - expected;
+	percentage = (double)difference / events[0].result.value * 100;
+
+	if (report) {
+		event_report(&events[0]);
+		event_report(&events[1]);
+
+		printf("Looped for %llu instructions, overhead %llu\n", instructions, overhead);
+		printf("Expected %llu\n", expected);
+		printf("Actual   %llu\n", events[0].result.value);
+		printf("Delta    %lld, %f%%\n", difference, percentage);
+	}
+
+	event_reset(&events[0]);
+	event_reset(&events[1]);
+
+	if (difference < 0)
+		difference = -difference;
+
+	/* Tolerate a difference below 0.0001 % */
+	difference *= 10000 * 100;
+	if (difference / events[0].result.value)
+		return -1;
+
+	return 0;
+}
+
+/* Count how many instructions it takes to do a null loop */
+static u64 determine_overhead(struct event *events)
+{
+	u64 current, overhead;
+	int i;
+
+	do_count_loop(events, 0, 0, false);
+	overhead = events[0].result.value;
+
+	for (i = 0; i < 100; i++) {
+		do_count_loop(events, 0, 0, false);
+		current = events[0].result.value;
+		if (current < overhead) {
+			printf("Replacing overhead %llu with %llu\n", overhead, current);
+			overhead = current;
+		}
+	}
+
+	return overhead;
+}
+
+static int count_instructions(void)
+{
+	struct event events[2];
+	u64 overhead;
+
+	setup_event(&events[0], PERF_COUNT_HW_INSTRUCTIONS, "instructions");
+	setup_event(&events[1], PERF_COUNT_HW_CPU_CYCLES, "cycles");
+
+	if (event_open(&events[0])) {
+		perror("perf_event_open");
+		return -1;
+	}
+
+	if (event_open_with_group(&events[1], events[0].fd)) {
+		perror("perf_event_open");
+		return -1;
+	}
+
+	overhead = determine_overhead(events);
+	printf("Overhead of null loop: %llu instructions\n", overhead);
+
+	/* Run for 1M instructions */
+	FAIL_IF(do_count_loop(events, 0x100000, overhead, true));
+
+	/* Run for 10M instructions */
+	FAIL_IF(do_count_loop(events, 0xa00000, overhead, true));
+
+	/* Run for 100M instructions */
+	FAIL_IF(do_count_loop(events, 0x6400000, overhead, true));
+
+	/* Run for 1G instructions */
+	FAIL_IF(do_count_loop(events, 0x40000000, overhead, true));
+
+	event_close(&events[0]);
+	event_close(&events[1]);
+
+	return 0;
+}
+
+int main(void)
+{
+	return test_harness(count_instructions, "count_instructions");
+}
diff --git a/tools/testing/selftests/powerpc/pmu/event.c b/tools/testing/selftests/powerpc/pmu/event.c
new file mode 100644
index 000000000000..2b2d11df2450
--- /dev/null
+++ b/tools/testing/selftests/powerpc/pmu/event.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright 2013, Michael Ellerman, IBM Corp.
+ * Licensed under GPLv2.
+ */
+
+#define _GNU_SOURCE
+#include <unistd.h>
+#include <sys/syscall.h>
+#include <string.h>
+#include <stdio.h>
+#include <sys/ioctl.h>
+
+#include "event.h"
+
+
+int perf_event_open(struct perf_event_attr *attr, pid_t pid, int cpu,
+		int group_fd, unsigned long flags)
+{
+	return syscall(__NR_perf_event_open, attr, pid, cpu,
+			   group_fd, flags);
+}
+
+void event_init_opts(struct event *e, u64 config, int type, char *name)
+{
+	memset(e, 0, sizeof(*e));
+
+	e->name = name;
+
+	e->attr.type = type;
+	e->attr.config = config;
+	e->attr.size = sizeof(e->attr);
+	/* This has to match the structure layout in the header */
+	e->attr.read_format = PERF_FORMAT_TOTAL_TIME_ENABLED | \
+				  PERF_FORMAT_TOTAL_TIME_RUNNING;
+}
+
+void event_init_named(struct event *e, u64 config, char *name)
+{
+	event_init_opts(e, config, PERF_TYPE_RAW, name);
+}
+
+#define PERF_CURRENT_PID	0
+#define PERF_NO_CPU		-1
+#define PERF_NO_GROUP		-1
+
+int event_open_with_options(struct event *e, pid_t pid, int cpu, int group_fd)
+{
+	e->fd = perf_event_open(&e->attr, pid, cpu, group_fd, 0);
+	if (e->fd == -1) {
+		perror("perf_event_open");
+		return -1;
+	}
+
+	return 0;
+}
+
+int event_open_with_group(struct event *e, int group_fd)
+{
+	return event_open_with_options(e, PERF_CURRENT_PID, PERF_NO_CPU, group_fd);
+}
+
+int event_open(struct event *e)
+{
+	return event_open_with_options(e, PERF_CURRENT_PID, PERF_NO_CPU, PERF_NO_GROUP);
+}
+
+void event_close(struct event *e)
+{
+	close(e->fd);
+}
+
+int event_reset(struct event *e)
+{
+	return ioctl(e->fd, PERF_EVENT_IOC_RESET);
+}
+
+int event_read(struct event *e)
+{
+	int rc;
+
+	rc = read(e->fd, &e->result, sizeof(e->result));
+	if (rc != sizeof(e->result)) {
+		fprintf(stderr, "read error on event %p!\n", e);
+		return -1;
+	}
+
+	return 0;
+}
+
+void event_report_justified(struct event *e, int name_width, int result_width)
+{
+	printf("%*s: result %*llu ", name_width, e->name, result_width,
+	       e->result.value);
+
+	if (e->result.running == e->result.enabled)
+		printf("running/enabled %llu\n", e->result.running);
+	else
+		printf("running %llu enabled %llu\n", e->result.running,
+			e->result.enabled);
+}
+
+void event_report(struct event *e)
+{
+	event_report_justified(e, 0, 0);
+}
diff --git a/tools/testing/selftests/powerpc/pmu/event.h b/tools/testing/selftests/powerpc/pmu/event.h
new file mode 100644
index 000000000000..e6993192ff34
--- /dev/null
+++ b/tools/testing/selftests/powerpc/pmu/event.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2013, Michael Ellerman, IBM Corp.
+ * Licensed under GPLv2.
+ */
+
+#ifndef _SELFTESTS_POWERPC_PMU_EVENT_H
+#define _SELFTESTS_POWERPC_PMU_EVENT_H
+
+#include <unistd.h>
+#include <linux/perf_event.h>
+
+#include "utils.h"
+
+
+struct event {
+	struct perf_event_attr attr;
+	char *name;
+	int fd;
+	/* This must match the read_format we use */
+	struct {
+		u64 value;
+		u64 running;
+		u64 enabled;
+	} result;
+};
+
+void event_init(struct event *e, u64 config);
+void event_init_named(struct event *e, u64 config, char *name);
+void event_init_opts(struct event *e, u64 config, int type, char *name);
+int event_open_with_options(struct event *e, pid_t pid, int cpu, int group_fd);
+int event_open_with_group(struct event *e, int group_fd);
+int event_open(struct event *e);
+void event_close(struct event *e);
+int event_reset(struct event *e);
+int event_read(struct event *e);
+void event_report_justified(struct event *e, int name_width, int result_width);
+void event_report(struct event *e);
+
+#endif /* _SELFTESTS_POWERPC_PMU_EVENT_H */
diff --git a/tools/testing/selftests/powerpc/pmu/loop.S b/tools/testing/selftests/powerpc/pmu/loop.S
new file mode 100644
index 000000000000..8820e3df1444
--- /dev/null
+++ b/tools/testing/selftests/powerpc/pmu/loop.S
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2013, Michael Ellerman, IBM Corp.
+ * Licensed under GPLv2.
+ */
+
+	.text
+
+	.global thirty_two_instruction_loop
+	.type .thirty_two_instruction_loop,@function
+	.section ".opd","aw",@progbits
+thirty_two_instruction_loop:
+	.quad .thirty_two_instruction_loop, .TOC.@tocbase, 0
+	.previous
+.thirty_two_instruction_loop:
+	cmpwi	%r3,0
+	beqlr
+	addi	%r4,%r3,1
+	addi	%r4,%r4,1
+	addi	%r4,%r4,1
+	addi	%r4,%r4,1
+	addi	%r4,%r4,1
+	addi	%r4,%r4,1
+	addi	%r4,%r4,1
+	addi	%r4,%r4,1
+	addi	%r4,%r4,1
+	addi	%r4,%r4,1
+	addi	%r4,%r4,1
+	addi	%r4,%r4,1
+	addi	%r4,%r4,1
+	addi	%r4,%r4,1
+	addi	%r4,%r4,1
+	addi	%r4,%r4,1
+	addi	%r4,%r4,1
+	addi	%r4,%r4,1
+	addi	%r4,%r4,1
+	addi	%r4,%r4,1
+	addi	%r4,%r4,1
+	addi	%r4,%r4,1
+	addi	%r4,%r4,1
+	addi	%r4,%r4,1
+	addi	%r4,%r4,1
+	addi	%r4,%r4,1
+	addi	%r4,%r4,1
+	addi	%r4,%r4,1	# 28 addi's
+	subi	%r3,%r3,1
+	b	.thirty_two_instruction_loop
diff --git a/tools/testing/selftests/powerpc/subunit.h b/tools/testing/selftests/powerpc/subunit.h
new file mode 100644
index 000000000000..98a22920792d
--- /dev/null
+++ b/tools/testing/selftests/powerpc/subunit.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2013, Michael Ellerman, IBM Corp.
+ * Licensed under GPLv2.
+ */
+
+#ifndef _SELFTESTS_POWERPC_SUBUNIT_H
+#define _SELFTESTS_POWERPC_SUBUNIT_H
+
+static inline void test_start(char *name)
+{
+	printf("test: %s\n", name);
+}
+
+static inline void test_failure_detail(char *name, char *detail)
+{
+	printf("failure: %s [%s]\n", name, detail);
+}
+
+static inline void test_failure(char *name)
+{
+	printf("failure: %s\n", name);
+}
+
+static inline void test_error(char *name)
+{
+	printf("error: %s\n", name);
+}
+
+static inline void test_success(char *name)
+{
+	printf("success: %s\n", name);
+}
+
+static inline void test_finish(char *name, int status)
+{
+	if (status)
+		test_failure(name);
+	else
+		test_success(name);
+}
+
+static inline void test_set_git_version(char *value)
+{
+	printf("tags: git_version:%s\n", value);
+}
+
+#endif /* _SELFTESTS_POWERPC_SUBUNIT_H */
diff --git a/tools/testing/selftests/powerpc/utils.h b/tools/testing/selftests/powerpc/utils.h
new file mode 100644
index 000000000000..5851c4b0f553
--- /dev/null
+++ b/tools/testing/selftests/powerpc/utils.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2013, Michael Ellerman, IBM Corp.
+ * Licensed under GPLv2.
+ */
+
+#ifndef _SELFTESTS_POWERPC_UTILS_H
+#define _SELFTESTS_POWERPC_UTILS_H
+
+#include <stdint.h>
+#include <stdbool.h>
+
+/* Avoid headaches with PRI?64 - just use %ll? always */
+typedef unsigned long long u64;
+typedef   signed long long s64;
+
+/* Just for familiarity */
+typedef uint32_t u32;
+typedef uint8_t u8;
+
+
+int test_harness(int (test_function)(void), char *name);
+
+
+/* Yes, this is evil */
+#define FAIL_IF(x)						\
+do {								\
+	if ((x)) {						\
+		fprintf(stderr,					\
+		"[FAIL] Test FAILED on line %d\n", __LINE__);	\
+		return 1;					\
+	}							\
+} while (0)
+
+#endif /* _SELFTESTS_POWERPC_UTILS_H */
diff --git a/tools/testing/selftests/timers/Makefile b/tools/testing/selftests/timers/Makefile
new file mode 100644
index 000000000000..eb2859f4ad21
--- /dev/null
+++ b/tools/testing/selftests/timers/Makefile
@@ -0,0 +1,8 @@
+all:
+	gcc posix_timers.c -o posix_timers -lrt
+
+run_tests: all
+	./posix_timers
+
+clean:
+	rm -f ./posix_timers
diff --git a/tools/testing/selftests/timers/posix_timers.c b/tools/testing/selftests/timers/posix_timers.c
new file mode 100644
index 000000000000..4fa655d68a81
--- /dev/null
+++ b/tools/testing/selftests/timers/posix_timers.c
@@ -0,0 +1,221 @@
+/*
+ * Copyright (C) 2013 Red Hat, Inc., Frederic Weisbecker <fweisbec@redhat.com>
+ *
+ * Licensed under the terms of the GNU GPL License version 2
+ *
+ * Selftests for a few posix timers interface.
+ *
+ * Kernel loop code stolen from Steven Rostedt <srostedt@redhat.com>
+ */
+
+#include <sys/time.h>
+#include <stdio.h>
+#include <signal.h>
+#include <unistd.h>
+#include <time.h>
+#include <pthread.h>
+
+#define DELAY 2
+#define USECS_PER_SEC 1000000
+
+static volatile int done;
+
+/* Busy loop in userspace to elapse ITIMER_VIRTUAL */
+static void user_loop(void)
+{
+	while (!done);
+}
+
+/*
+ * Try to spend as much time as possible in kernelspace
+ * to elapse ITIMER_PROF.
+ */
+static void kernel_loop(void)
+{
+	void *addr = sbrk(0);
+
+	while (!done) {
+		brk(addr + 4096);
+		brk(addr);
+	}
+}
+
+/*
+ * Sleep until ITIMER_REAL expiration.
+ */
+static void idle_loop(void)
+{
+	pause();
+}
+
+static void sig_handler(int nr)
+{
+	done = 1;
+}
+
+/*
+ * Check the expected timer expiration matches the GTOD elapsed delta since
+ * we armed the timer. Keep a 0.5 sec error margin due to various jitter.
+ */
+static int check_diff(struct timeval start, struct timeval end)
+{
+	long long diff;
+
+	diff = end.tv_usec - start.tv_usec;
+	diff += (end.tv_sec - start.tv_sec) * USECS_PER_SEC;
+
+	if (abs(diff - DELAY * USECS_PER_SEC) > USECS_PER_SEC / 2) {
+		printf("Diff too high: %lld..", diff);
+		return -1;
+	}
+
+	return 0;
+}
+
+static int check_itimer(int which)
+{
+	int err;
+	struct timeval start, end;
+	struct itimerval val = {
+		.it_value.tv_sec = DELAY,
+	};
+
+	printf("Check itimer ");
+
+	if (which == ITIMER_VIRTUAL)
+		printf("virtual... ");
+	else if (which == ITIMER_PROF)
+		printf("prof... ");
+	else if (which == ITIMER_REAL)
+		printf("real... ");
+
+	fflush(stdout);
+
+	done = 0;
+
+	if (which == ITIMER_VIRTUAL)
+		signal(SIGVTALRM, sig_handler);
+	else if (which == ITIMER_PROF)
+		signal(SIGPROF, sig_handler);
+	else if (which == ITIMER_REAL)
+		signal(SIGALRM, sig_handler);
+
+	err = gettimeofday(&start, NULL);
+	if (err < 0) {
+		perror("Can't call gettimeofday()\n");
+		return -1;
+	}
+
+	err = setitimer(which, &val, NULL);
+	if (err < 0) {
+		perror("Can't set timer\n");
+		return -1;
+	}
+
+	if (which == ITIMER_VIRTUAL)
+		user_loop();
+	else if (which == ITIMER_PROF)
+		kernel_loop();
+	else if (which == ITIMER_REAL)
+		idle_loop();
+
+	gettimeofday(&end, NULL);
+	if (err < 0) {
+		perror("Can't call gettimeofday()\n");
+		return -1;
+	}
+
+	if (!check_diff(start, end))
+		printf("[OK]\n");
+	else
+		printf("[FAIL]\n");
+
+	return 0;
+}
+
+static int check_timer_create(int which)
+{
+	int err;
+	timer_t id;
+	struct timeval start, end;
+	struct itimerspec val = {
+		.it_value.tv_sec = DELAY,
+	};
+
+	printf("Check timer_create() ");
+	if (which == CLOCK_THREAD_CPUTIME_ID) {
+		printf("per thread... ");
+	} else if (which == CLOCK_PROCESS_CPUTIME_ID) {
+		printf("per process... ");
+	}
+	fflush(stdout);
+
+	done = 0;
+	timer_create(which, NULL, &id);
+	if (err < 0) {
+		perror("Can't create timer\n");
+		return -1;
+	}
+	signal(SIGALRM, sig_handler);
+
+	err = gettimeofday(&start, NULL);
+	if (err < 0) {
+		perror("Can't call gettimeofday()\n");
+		return -1;
+	}
+
+	err = timer_settime(id, 0, &val, NULL);
+	if (err < 0) {
+		perror("Can't set timer\n");
+		return -1;
+	}
+
+	user_loop();
+
+	gettimeofday(&end, NULL);
+	if (err < 0) {
+		perror("Can't call gettimeofday()\n");
+		return -1;
+	}
+
+	if (!check_diff(start, end))
+		printf("[OK]\n");
+	else
+		printf("[FAIL]\n");
+
+	return 0;
+}
+
+int main(int argc, char **argv)
+{
+	int err;
+
+	printf("Testing posix timers. False negative may happen on CPU execution \n");
+	printf("based timers if other threads run on the CPU...\n");
+
+	if (check_itimer(ITIMER_VIRTUAL) < 0)
+		return -1;
+
+	if (check_itimer(ITIMER_PROF) < 0)
+		return -1;
+
+	if (check_itimer(ITIMER_REAL) < 0)
+		return -1;
+
+	if (check_timer_create(CLOCK_THREAD_CPUTIME_ID) < 0)
+		return -1;
+
+	/*
+	 * It's unfortunately hard to reliably test a timer expiration
+	 * on parallel multithread cputime. We could arm it to expire
+	 * on DELAY * nr_threads, with nr_threads busy looping, then wait
+	 * the normal DELAY since the time is elapsing nr_threads faster.
+	 * But for that we need to ensure we have real physical free CPUs
+	 * to ensure true parallelism. So test only one thread until we
+	 * find a better solution.
+	 */
+	if (check_timer_create(CLOCK_PROCESS_CPUTIME_ID) < 0)
+		return -1;
+
+	return 0;
+}
diff --git a/tools/testing/selftests/vm/.gitignore b/tools/testing/selftests/vm/.gitignore
new file mode 100644
index 000000000000..ff1bb16cec4f
--- /dev/null
+++ b/tools/testing/selftests/vm/.gitignore
@@ -0,0 +1,4 @@
+hugepage-mmap
+hugepage-shm
+map_hugetlb
+thuge-gen
diff --git a/tools/testing/selftests/vm/Makefile b/tools/testing/selftests/vm/Makefile
index 436d2e81868b..3f94e1afd6cf 100644
--- a/tools/testing/selftests/vm/Makefile
+++ b/tools/testing/selftests/vm/Makefile
@@ -2,13 +2,14 @@
 
 CC = $(CROSS_COMPILE)gcc
 CFLAGS = -Wall
+BINARIES = hugepage-mmap hugepage-shm map_hugetlb thuge-gen hugetlbfstest
 
-all: hugepage-mmap hugepage-shm  map_hugetlb thuge-gen
+all: $(BINARIES)
 %: %.c
 	$(CC) $(CFLAGS) -o $@ $^
 
 run_tests: all
-	@/bin/sh ./run_vmtests || echo "vmtests: [FAIL]"
+	@/bin/sh ./run_vmtests || (echo "vmtests: [FAIL]"; exit 1)
 
 clean:
-	$(RM) hugepage-mmap hugepage-shm  map_hugetlb
+	$(RM) $(BINARIES)
diff --git a/tools/testing/selftests/vm/hugetlbfstest.c b/tools/testing/selftests/vm/hugetlbfstest.c
new file mode 100644
index 000000000000..ea40ff8c2391
--- /dev/null
+++ b/tools/testing/selftests/vm/hugetlbfstest.c
@@ -0,0 +1,84 @@
+#define _GNU_SOURCE
+#include <assert.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+typedef unsigned long long u64;
+
+static size_t length = 1 << 24;
+
+static u64 read_rss(void)
+{
+	char buf[4096], *s = buf;
+	int i, fd;
+	u64 rss;
+
+	fd = open("/proc/self/statm", O_RDONLY);
+	assert(fd > 2);
+	memset(buf, 0, sizeof(buf));
+	read(fd, buf, sizeof(buf) - 1);
+	for (i = 0; i < 1; i++)
+		s = strchr(s, ' ') + 1;
+	rss = strtoull(s, NULL, 10);
+	return rss << 12; /* assumes 4k pagesize */
+}
+
+static void do_mmap(int fd, int extra_flags, int unmap)
+{
+	int *p;
+	int flags = MAP_PRIVATE | MAP_POPULATE | extra_flags;
+	u64 before, after;
+
+	before = read_rss();
+	p = mmap(NULL, length, PROT_READ | PROT_WRITE, flags, fd, 0);
+	assert(p != MAP_FAILED ||
+			!"mmap returned an unexpected error");
+	after = read_rss();
+	assert(llabs(after - before - length) < 0x40000 ||
+			!"rss didn't grow as expected");
+	if (!unmap)
+		return;
+	munmap(p, length);
+	after = read_rss();
+	assert(llabs(after - before) < 0x40000 ||
+			!"rss didn't shrink as expected");
+}
+
+static int open_file(const char *path)
+{
+	int fd, err;
+
+	unlink(path);
+	fd = open(path, O_CREAT | O_RDWR | O_TRUNC | O_EXCL
+			| O_LARGEFILE | O_CLOEXEC, 0600);
+	assert(fd > 2);
+	unlink(path);
+	err = ftruncate(fd, length);
+	assert(!err);
+	return fd;
+}
+
+int main(void)
+{
+	int hugefd, fd;
+
+	fd = open_file("/dev/shm/hugetlbhog");
+	hugefd = open_file("/hugepages/hugetlbhog");
+
+	system("echo 100 > /proc/sys/vm/nr_hugepages");
+	do_mmap(-1, MAP_ANONYMOUS, 1);
+	do_mmap(fd, 0, 1);
+	do_mmap(-1, MAP_ANONYMOUS | MAP_HUGETLB, 1);
+	do_mmap(hugefd, 0, 1);
+	do_mmap(hugefd, MAP_HUGETLB, 1);
+	/* Leak the last one to test do_exit() */
+	do_mmap(-1, MAP_ANONYMOUS | MAP_HUGETLB, 0);
+	printf("oll korrekt.\n");
+	return 0;
+}
diff --git a/tools/testing/selftests/vm/run_vmtests b/tools/testing/selftests/vm/run_vmtests
index 4c53cae6c273..c87b6812300d 100644
--- a/tools/testing/selftests/vm/run_vmtests
+++ b/tools/testing/selftests/vm/run_vmtests
@@ -4,6 +4,7 @@
 #we need 256M, below is the size in kB
 needmem=262144
 mnt=./huge
+exitcode=0
 
 #get pagesize and freepages from /proc/meminfo
 while read name size unit; do
@@ -41,6 +42,7 @@ echo "--------------------"
 ./hugepage-mmap
 if [ $? -ne 0 ]; then
 	echo "[FAIL]"
+	exitcode=1
 else
 	echo "[PASS]"
 fi
@@ -55,6 +57,7 @@ echo "--------------------"
 ./hugepage-shm
 if [ $? -ne 0 ]; then
 	echo "[FAIL]"
+	exitcode=1
 else
 	echo "[PASS]"
 fi
@@ -67,6 +70,18 @@ echo "--------------------"
 ./map_hugetlb
 if [ $? -ne 0 ]; then
 	echo "[FAIL]"
+	exitcode=1
+else
+	echo "[PASS]"
+fi
+
+echo "--------------------"
+echo "running hugetlbfstest"
+echo "--------------------"
+./hugetlbfstest
+if [ $? -ne 0 ]; then
+	echo "[FAIL]"
+	exitcode=1
 else
 	echo "[PASS]"
 fi
@@ -75,3 +90,4 @@ fi
 umount $mnt
 rm -rf $mnt
 echo $nr_hugepgs > /proc/sys/vm/nr_hugepages
+exit $exitcode