Merge branch 'next' (accumulated 3.16 merge window patches) into master

Now that 3.15 is released, this merges the 'next' branch into 'master',
bringing us to the normal situation where my 'master' branch is the
merge window.

* accumulated work in next: (6809 commits)
  ufs: sb mutex merge + mutex_destroy
  powerpc: update comments for generic idle conversion
  cris: update comments for generic idle conversion
  idle: remove cpu_idle() forward declarations
  nbd: zero from and len fields in NBD_CMD_DISCONNECT.
  mm: convert some level-less printks to pr_*
  MAINTAINERS: adi-buildroot-devel is moderated
  MAINTAINERS: add linux-api for review of API/ABI changes
  mm/kmemleak-test.c: use pr_fmt for logging
  fs/dlm/debug_fs.c: replace seq_printf by seq_puts
  fs/dlm/lockspace.c: convert simple_str to kstr
  fs/dlm/config.c: convert simple_str to kstr
  mm: mark remap_file_pages() syscall as deprecated
  mm: memcontrol: remove unnecessary memcg argument from soft limit functions
  mm: memcontrol: clean up memcg zoneinfo lookup
  mm/memblock.c: call kmemleak directly from memblock_(alloc|free)
  mm/mempool.c: update the kmemleak stack trace for mempool allocations
  lib/radix-tree.c: update the kmemleak stack trace for radix tree allocations
  mm: introduce kmemleak_update_trace()
  mm/kmemleak.c: use %u to print ->checksum
  ...

13 files changed, 194 insertions, 175 deletions

diff --git a/tools/power/cpupower/Makefile b/tools/power/cpupower/Makefile
index cbfec92af327..2e2ba2efa0d9 100644
--- a/tools/power/cpupower/Makefile
+++ b/tools/power/cpupower/Makefile
@@ -62,7 +62,7 @@ LIB_MAJ=			0.0.0
 LIB_MIN=			0
 
 PACKAGE =			cpupower
-PACKAGE_BUGREPORT =		cpufreq@vger.kernel.org
+PACKAGE_BUGREPORT =		linux-pm@vger.kernel.org
 LANGUAGES = 			de fr it cs pt
 
 
@@ -274,6 +274,8 @@ install-man:
 	$(INSTALL_DATA) -D man/cpupower.1 $(DESTDIR)${mandir}/man1/cpupower.1
 	$(INSTALL_DATA) -D man/cpupower-frequency-set.1 $(DESTDIR)${mandir}/man1/cpupower-frequency-set.1
 	$(INSTALL_DATA) -D man/cpupower-frequency-info.1 $(DESTDIR)${mandir}/man1/cpupower-frequency-info.1
+	$(INSTALL_DATA) -D man/cpupower-idle-set.1 $(DESTDIR)${mandir}/man1/cpupower-idle-set.1
+	$(INSTALL_DATA) -D man/cpupower-idle-info.1 $(DESTDIR)${mandir}/man1/cpupower-idle-info.1
 	$(INSTALL_DATA) -D man/cpupower-set.1 $(DESTDIR)${mandir}/man1/cpupower-set.1
 	$(INSTALL_DATA) -D man/cpupower-info.1 $(DESTDIR)${mandir}/man1/cpupower-info.1
 	$(INSTALL_DATA) -D man/cpupower-monitor.1 $(DESTDIR)${mandir}/man1/cpupower-monitor.1
@@ -295,8 +297,12 @@ uninstall:
 	- rm -f $(DESTDIR)${libdir}/libcpupower.*
 	- rm -f $(DESTDIR)${includedir}/cpufreq.h
 	- rm -f $(DESTDIR)${bindir}/utils/cpupower
-	- rm -f $(DESTDIR)${mandir}/man1/cpufreq-set.1
-	- rm -f $(DESTDIR)${mandir}/man1/cpufreq-info.1
+	- rm -f $(DESTDIR)${mandir}/man1/cpupower.1
+	- rm -f $(DESTDIR)${mandir}/man1/cpupower-frequency-set.1
+	- rm -f $(DESTDIR)${mandir}/man1/cpupower-frequency-info.1
+	- rm -f $(DESTDIR)${mandir}/man1/cpupower-set.1
+	- rm -f $(DESTDIR)${mandir}/man1/cpupower-info.1
+	- rm -f $(DESTDIR)${mandir}/man1/cpupower-monitor.1
 	- for HLANG in $(LANGUAGES); do \
 		rm -f $(DESTDIR)${localedir}/$$HLANG/LC_MESSAGES/cpupower.mo; \
 	  done;
diff --git a/tools/power/cpupower/README b/tools/power/cpupower/README
index fd9d4c0d6688..1c68f47663b2 100644
--- a/tools/power/cpupower/README
+++ b/tools/power/cpupower/README
@@ -1,6 +1,4 @@
-The cpufrequtils package (homepage: 
-http://www.kernel.org/pub/linux/utils/kernel/cpufreq/cpufrequtils.html ) 
-consists of the following elements:
+The cpupower package consists of the following elements:
 
 requirements
 ------------
@@ -11,10 +9,10 @@ providing cpuid.h is needed.
 For both it's not explicitly checked for (yet).
 
 
-libcpufreq
+libcpupower
 ----------
 
-"libcpufreq" is a library which offers a unified access method for userspace
+"libcpupower" is a library which offers a unified access method for userspace
 tools and programs to the cpufreq core and drivers in the Linux kernel. This
 allows for code reduction in userspace tools, a clean implementation of
 the interaction to the cpufreq core, and support for both the sysfs and proc
@@ -28,22 +26,22 @@ make
 su
 make install
 
-should suffice on most systems. It builds default libcpufreq,
-cpufreq-set and cpufreq-info files and installs them in /usr/lib and
-/usr/bin, respectively. If you want to set up the paths differently and/or
-want to configure the package to your specific needs, you need to open
-"Makefile" with an editor of your choice and edit the block marked
-CONFIGURATION.
+should suffice on most systems. It builds libcpupower to put in
+/usr/lib; cpupower, cpufreq-bench_plot.sh to put in /usr/bin; and
+cpufreq-bench to put in /usr/sbin. If you want to set up the paths
+differently and/or want to configure the package to your specific
+needs, you need to open "Makefile" with an editor of your choice and
+edit the block marked CONFIGURATION.
 
 
 THANKS
 ------
 Many thanks to Mattia Dongili who wrote the autotoolization and
-libtoolization, the manpages and the italian language file for cpufrequtils;
+libtoolization, the manpages and the italian language file for cpupower;
 to Dave Jones for his feedback and his dump_psb tool; to Bruno Ducrot for his
 powernow-k8-decode and intel_gsic tools as well as the french language file;
 and to various others commenting on the previous (pre-)releases of 
-cpufrequtils.
+cpupower.
 
 
         Dominik Brodowski
diff --git a/tools/power/cpupower/ToDo b/tools/power/cpupower/ToDo
index 874b78b586ee..6e8b89f282e6 100644
--- a/tools/power/cpupower/ToDo
+++ b/tools/power/cpupower/ToDo
@@ -3,7 +3,6 @@ ToDos sorted by priority:
 - Use bitmask functions to parse CPU topology more robust
   (current implementation has issues on AMD)
 - Try to read out boost states and frequencies on Intel
-- Adjust README
 - Somewhere saw the ability to read power consumption of
   RAM from HW on Intel SandyBridge -> another monitor?
 - Add another c1e debug idle monitor
diff --git a/tools/power/cpupower/debug/kernel/cpufreq-test_tsc.c b/tools/power/cpupower/debug/kernel/cpufreq-test_tsc.c
index 0f10b81e3322..5224ee5b392d 100644
--- a/tools/power/cpupower/debug/kernel/cpufreq-test_tsc.c
+++ b/tools/power/cpupower/debug/kernel/cpufreq-test_tsc.c
@@ -18,7 +18,7 @@
  * 5.) if the third value, "diff_pmtmr", changes between 2. and 4., the
  *     TSC-based delay routine on the Linux kernel does not correctly
  *     handle the cpufreq transition. Please report this to
- *     cpufreq@vger.kernel.org
+ *     linux-pm@vger.kernel.org
  */
 
 #include <linux/kernel.h>
diff --git a/tools/power/cpupower/man/cpupower-frequency-info.1 b/tools/power/cpupower/man/cpupower-frequency-info.1
index 4a1918ea8f9c..9c85a382e355 100644
--- a/tools/power/cpupower/man/cpupower-frequency-info.1
+++ b/tools/power/cpupower/man/cpupower-frequency-info.1
@@ -50,6 +50,9 @@ Prints out information like provided by the /proc/cpufreq interface in 2.4. and
 \fB\-m\fR \fB\-\-human\fR
 human\-readable output for the \-f, \-w, \-s and \-y parameters.
 .TP  
+\fB\-n\fR \fB\-\-no-rounding\fR
+Output frequencies and latencies without rounding off values.
+.TP  
 .SH "REMARKS"
 .LP 
 By default only values of core zero are displayed. How to display settings of
diff --git a/tools/power/cpupower/man/cpupower-idle-set.1 b/tools/power/cpupower/man/cpupower-idle-set.1
index 6b1607272a5b..3e6799d7a79f 100644
--- a/tools/power/cpupower/man/cpupower-idle-set.1
+++ b/tools/power/cpupower/man/cpupower-idle-set.1
@@ -13,11 +13,17 @@ sleep states. This can be handy for power vs performance tuning.
 .SH "OPTIONS"
 .LP
 .TP
-\fB\-d\fR \fB\-\-disable\fR
+\fB\-d\fR \fB\-\-disable\fR <STATE_NO>
 Disable a specific processor sleep state.
 .TP
-\fB\-e\fR \fB\-\-enable\fR
+\fB\-e\fR \fB\-\-enable\fR <STATE_NO>
 Enable a specific processor sleep state.
+.TP
+\fB\-D\fR \fB\-\-disable-by-latency\fR <LATENCY>
+Disable all idle states with a equal or higher latency than <LATENCY>
+.TP
+\fB\-E\fR \fB\-\-enable-all\fR
+Enable all idle states if not enabled already.
 
 .SH "REMARKS"
 .LP
diff --git a/tools/power/cpupower/man/cpupower-info.1 b/tools/power/cpupower/man/cpupower-info.1
index 58e21196f17f..340bcd0be7de 100644
--- a/tools/power/cpupower/man/cpupower-info.1
+++ b/tools/power/cpupower/man/cpupower-info.1
@@ -3,7 +3,7 @@
 cpupower\-info \- Shows processor power related kernel or hardware configurations
 .SH SYNOPSIS
 .ft B
-.B cpupower info [ \-b ] [ \-s ] [ \-m ]
+.B cpupower info [ \-b ]
 
 .SH DESCRIPTION
 \fBcpupower info \fP shows kernel configurations or processor hardware
diff --git a/tools/power/cpupower/man/cpupower-set.1 b/tools/power/cpupower/man/cpupower-set.1
index 9dbd536518ab..2bcc696f4496 100644
--- a/tools/power/cpupower/man/cpupower-set.1
+++ b/tools/power/cpupower/man/cpupower-set.1
@@ -3,7 +3,7 @@
 cpupower\-set \- Set processor power related kernel or hardware configurations
 .SH SYNOPSIS
 .ft B
-.B cpupower set [ \-b VAL ] [ \-s VAL ] [ \-m VAL ]
+.B cpupower set [ \-b VAL ]
 
 
 .SH DESCRIPTION
@@ -55,35 +55,6 @@ Use \fBcpupower -c all info -b\fP to verify.
 
 This options needs the msr kernel driver (CONFIG_X86_MSR) loaded.
 .RE
-.PP
-\-\-sched\-mc,  \-m [ VAL ]
-.RE
-\-\-sched\-smt, \-s [ VAL ]
-.RS 4
-\-\-sched\-mc utilizes cores in one processor package/socket first before
-processes are scheduled to other processor packages/sockets.
-
-\-\-sched\-smt utilizes thread siblings of one processor core first before
-processes are scheduled to other cores.
-
-The impact on power consumption and performance (positiv or negativ) heavily
-depends on processor support for deep sleep states, frequency scaling and
-frequency boost modes and their dependencies between other thread siblings
-and processor cores.
-
-Taken over from kernel documentation:
-
-Adjust the kernel's multi-core scheduler support.
-
-Possible values are:
-.RS 2
-0 - No power saving load balance (default value)
-
-1 - Fill one thread/core/package first for long running threads
-
-2 - Also bias task wakeups to semi-idle cpu package for power
-savings
-.RE
 
 .SH "SEE ALSO"
 cpupower-info(1), cpupower-monitor(1), powertop(1)
diff --git a/tools/power/cpupower/utils/cpufreq-info.c b/tools/power/cpupower/utils/cpufreq-info.c
index 28953c9a7bd5..b4b90a97662c 100644
--- a/tools/power/cpupower/utils/cpufreq-info.c
+++ b/tools/power/cpupower/utils/cpufreq-info.c
@@ -82,29 +82,42 @@ static void proc_cpufreq_output(void)
 	}
 }
 
+static int no_rounding;
 static void print_speed(unsigned long speed)
 {
 	unsigned long tmp;
 
-	if (speed > 1000000) {
-		tmp = speed % 10000;
-		if (tmp >= 5000)
-			speed += 10000;
-		printf("%u.%02u GHz", ((unsigned int) speed/1000000),
-			((unsigned int) (speed%1000000)/10000));
-	} else if (speed > 100000) {
-		tmp = speed % 1000;
-		if (tmp >= 500)
-			speed += 1000;
-		printf("%u MHz", ((unsigned int) speed / 1000));
-	} else if (speed > 1000) {
-		tmp = speed % 100;
-		if (tmp >= 50)
-			speed += 100;
-		printf("%u.%01u MHz", ((unsigned int) speed/1000),
-			((unsigned int) (speed%1000)/100));
-	} else
-		printf("%lu kHz", speed);
+	if (no_rounding) {
+		if (speed > 1000000)
+			printf("%u.%06u GHz", ((unsigned int) speed/1000000),
+				((unsigned int) speed%1000000));
+		else if (speed > 100000)
+			printf("%u MHz", (unsigned int) speed);
+		else if (speed > 1000)
+			printf("%u.%03u MHz", ((unsigned int) speed/1000),
+				(unsigned int) (speed%1000));
+		else
+			printf("%lu kHz", speed);
+	} else {
+		if (speed > 1000000) {
+			tmp = speed%10000;
+			if (tmp >= 5000)
+				speed += 10000;
+			printf("%u.%02u GHz", ((unsigned int) speed/1000000),
+				((unsigned int) (speed%1000000)/10000));
+		} else if (speed > 100000) {
+			tmp = speed%1000;
+			if (tmp >= 500)
+				speed += 1000;
+			printf("%u MHz", ((unsigned int) speed/1000));
+		} else if (speed > 1000) {
+			tmp = speed%100;
+			if (tmp >= 50)
+				speed += 100;
+			printf("%u.%01u MHz", ((unsigned int) speed/1000),
+				((unsigned int) (speed%1000)/100));
+		}
+	}
 
 	return;
 }
@@ -113,26 +126,38 @@ static void print_duration(unsigned long duration)
 {
 	unsigned long tmp;
 
-	if (duration > 1000000) {
-		tmp = duration % 10000;
-		if (tmp >= 5000)
-			duration += 10000;
-		printf("%u.%02u ms", ((unsigned int) duration/1000000),
-			((unsigned int) (duration%1000000)/10000));
-	} else if (duration > 100000) {
-		tmp = duration % 1000;
-		if (tmp >= 500)
-			duration += 1000;
-		printf("%u us", ((unsigned int) duration / 1000));
-	} else if (duration > 1000) {
-		tmp = duration % 100;
-		if (tmp >= 50)
-			duration += 100;
-		printf("%u.%01u us", ((unsigned int) duration/1000),
-			((unsigned int) (duration%1000)/100));
-	} else
-		printf("%lu ns", duration);
-
+	if (no_rounding) {
+		if (duration > 1000000)
+			printf("%u.%06u ms", ((unsigned int) duration/1000000),
+				((unsigned int) duration%1000000));
+		else if (duration > 100000)
+			printf("%u us", ((unsigned int) duration/1000));
+		else if (duration > 1000)
+			printf("%u.%03u us", ((unsigned int) duration/1000),
+				((unsigned int) duration%1000));
+		else
+			printf("%lu ns", duration);
+	} else {
+		if (duration > 1000000) {
+			tmp = duration%10000;
+			if (tmp >= 5000)
+				duration += 10000;
+			printf("%u.%02u ms", ((unsigned int) duration/1000000),
+				((unsigned int) (duration%1000000)/10000));
+		} else if (duration > 100000) {
+			tmp = duration%1000;
+			if (tmp >= 500)
+				duration += 1000;
+			printf("%u us", ((unsigned int) duration / 1000));
+		} else if (duration > 1000) {
+			tmp = duration%100;
+			if (tmp >= 50)
+				duration += 100;
+			printf("%u.%01u us", ((unsigned int) duration/1000),
+				((unsigned int) (duration%1000)/100));
+		} else
+			printf("%lu ns", duration);
+	}
 	return;
 }
 
@@ -525,6 +550,7 @@ static struct option info_opts[] = {
 	{ .name = "latency",	.has_arg = no_argument,		.flag = NULL,	.val = 'y'},
 	{ .name = "proc",	.has_arg = no_argument,		.flag = NULL,	.val = 'o'},
 	{ .name = "human",	.has_arg = no_argument,		.flag = NULL,	.val = 'm'},
+	{ .name = "no-rounding", .has_arg = no_argument,	.flag = NULL,	.val = 'n'},
 	{ },
 };
 
@@ -538,7 +564,8 @@ int cmd_freq_info(int argc, char **argv)
 	int output_param = 0;
 
 	do {
-		ret = getopt_long(argc, argv, "oefwldpgrasmyb", info_opts, NULL);
+		ret = getopt_long(argc, argv, "oefwldpgrasmybn", info_opts,
+				  NULL);
 		switch (ret) {
 		case '?':
 			output_param = '?';
@@ -575,6 +602,9 @@ int cmd_freq_info(int argc, char **argv)
 			}
 			human = 1;
 			break;
+		case 'n':
+			no_rounding = 1;
+			break;
 		default:
 			fprintf(stderr, "invalid or unknown argument\n");
 			return EXIT_FAILURE;
diff --git a/tools/power/cpupower/utils/cpuidle-set.c b/tools/power/cpupower/utils/cpuidle-set.c
index c78141c5dfac..d45d8d775c02 100644
--- a/tools/power/cpupower/utils/cpuidle-set.c
+++ b/tools/power/cpupower/utils/cpuidle-set.c
@@ -13,8 +13,14 @@
 #include "helpers/sysfs.h"
 
 static struct option info_opts[] = {
-	{ .name = "disable",	.has_arg = required_argument,	.flag = NULL,	.val = 'd'},
-	{ .name = "enable",	.has_arg = required_argument,	.flag = NULL,	.val = 'e'},
+	{ .name = "disable",
+	  .has_arg = required_argument,	.flag = NULL,	.val = 'd'},
+	{ .name = "enable",
+	  .has_arg = required_argument,	.flag = NULL,	.val = 'e'},
+	{ .name = "disable-by-latency",
+	  .has_arg = required_argument,	.flag = NULL,	.val = 'D'},
+	{ .name = "enable-all",
+	  .has_arg = no_argument,	.flag = NULL,	.val = 'E'},
 	{ },
 };
 
@@ -23,11 +29,13 @@ int cmd_idle_set(int argc, char **argv)
 {
 	extern char *optarg;
 	extern int optind, opterr, optopt;
-	int ret = 0, cont = 1, param = 0, idlestate = 0;
-	unsigned int cpu = 0;
+	int ret = 0, cont = 1, param = 0, disabled;
+	unsigned long long latency = 0, state_latency;
+	unsigned int cpu = 0, idlestate = 0, idlestates = 0;
+	char *endptr;
 
 	do {
-		ret = getopt_long(argc, argv, "d:e:", info_opts, NULL);
+		ret = getopt_long(argc, argv, "d:e:ED:", info_opts, NULL);
 		if (ret == -1)
 			break;
 		switch (ret) {
@@ -53,6 +61,27 @@ int cmd_idle_set(int argc, char **argv)
 			param = ret;
 			idlestate = atoi(optarg);
 			break;
+		case 'D':
+			if (param) {
+				param = -1;
+				cont = 0;
+				break;
+			}
+			param = ret;
+			latency = strtoull(optarg, &endptr, 10);
+			if (*endptr != '\0') {
+				printf(_("Bad latency value: %s\n"), optarg);
+				exit(EXIT_FAILURE);
+			}
+			break;
+		case 'E':
+			if (param) {
+				param = -1;
+				cont = 0;
+				break;
+			}
+			param = ret;
+			break;
 		case -1:
 			cont = 0;
 			break;
@@ -79,8 +108,14 @@ int cmd_idle_set(int argc, char **argv)
 		if (!bitmask_isbitset(cpus_chosen, cpu))
 			continue;
 
-		switch (param) {
+		if (sysfs_is_cpu_online(cpu) != 1)
+			continue;
+
+		idlestates = sysfs_get_idlestate_count(cpu);
+		if (idlestates <= 0)
+			continue;
 
+		switch (param) {
 		case 'd':
 			ret = sysfs_idlestate_disable(cpu, idlestate, 1);
 			if (ret == 0)
@@ -107,6 +142,34 @@ int cmd_idle_set(int argc, char **argv)
 		printf(_("Idlestate %u not enabled on CPU %u\n"),
 		       idlestate, cpu);
 			break;
+		case 'D':
+			for (idlestate = 0; idlestate < idlestates; idlestate++) {
+				disabled = sysfs_is_idlestate_disabled
+					(cpu, idlestate);
+				state_latency = sysfs_get_idlestate_latency
+					(cpu, idlestate);
+				printf("CPU: %u - idlestate %u - state_latency: %llu - latency: %llu\n",
+				       cpu, idlestate, state_latency, latency);
+				if (disabled == 1 || latency > state_latency)
+					continue;
+				ret = sysfs_idlestate_disable
+					(cpu, idlestate, 1);
+				if (ret == 0)
+		printf(_("Idlestate %u disabled on CPU %u\n"), idlestate, cpu);
+			}
+			break;
+		case 'E':
+			for (idlestate = 0; idlestate < idlestates; idlestate++) {
+				disabled = sysfs_is_idlestate_disabled
+					(cpu, idlestate);
+				if (disabled == 1) {
+					ret = sysfs_idlestate_disable
+						(cpu, idlestate, 0);
+					if (ret == 0)
+		printf(_("Idlestate %u enabled on CPU %u\n"), idlestate, cpu);
+				}
+			}
+			break;
 		default:
 			/* Not reachable with proper args checking */
 			printf(_("Invalid or unknown argument\n"));
diff --git a/tools/power/cpupower/utils/cpupower-info.c b/tools/power/cpupower/utils/cpupower-info.c
index 3f68632c28c7..136d979e9586 100644
--- a/tools/power/cpupower/utils/cpupower-info.c
+++ b/tools/power/cpupower/utils/cpupower-info.c
@@ -18,8 +18,6 @@
 
 static struct option set_opts[] = {
 	{ .name = "perf-bias",	.has_arg = optional_argument,	.flag = NULL,	.val = 'b'},
-	{ .name = "sched-mc",	.has_arg = optional_argument,	.flag = NULL,	.val = 'm'},
-	{ .name = "sched-smt",	.has_arg = optional_argument,	.flag = NULL,	.val = 's'},
 	{ },
 };
 
@@ -37,8 +35,6 @@ int cmd_info(int argc, char **argv)
 
 	union {
 		struct {
-			int sched_mc:1;
-			int sched_smt:1;
 			int perf_bias:1;
 		};
 		int params;
@@ -49,23 +45,13 @@ int cmd_info(int argc, char **argv)
 	textdomain(PACKAGE);
 
 	/* parameter parsing */
-	while ((ret = getopt_long(argc, argv, "msb", set_opts, NULL)) != -1) {
+	while ((ret = getopt_long(argc, argv, "b", set_opts, NULL)) != -1) {
 		switch (ret) {
 		case 'b':
 			if (params.perf_bias)
 				print_wrong_arg_exit();
 			params.perf_bias = 1;
 			break;
-		case 'm':
-			if (params.sched_mc)
-				print_wrong_arg_exit();
-			params.sched_mc = 1;
-			break;
-		case 's':
-			if (params.sched_smt)
-				print_wrong_arg_exit();
-			params.sched_smt = 1;
-			break;
 		default:
 			print_wrong_arg_exit();
 		}
@@ -78,25 +64,6 @@ int cmd_info(int argc, char **argv)
 	if (bitmask_isallclear(cpus_chosen))
 		bitmask_setbit(cpus_chosen, 0);
 
-	if (params.sched_mc) {
-		ret = sysfs_get_sched("mc");
-		printf(_("System's multi core scheduler setting: "));
-		if (ret < 0)
-			/* if sysfs file is missing it's: errno == ENOENT */
-			printf(_("not supported\n"));
-		else
-			printf("%d\n", ret);
-	}
-	if (params.sched_smt) {
-		ret = sysfs_get_sched("smt");
-		printf(_("System's thread sibling scheduler setting: "));
-		if (ret < 0)
-			/* if sysfs file is missing it's: errno == ENOENT */
-			printf(_("not supported\n"));
-		else
-			printf("%d\n", ret);
-	}
-
 	/* Add more per cpu options here */
 	if (!params.perf_bias)
 		return ret;
@@ -125,11 +92,12 @@ int cmd_info(int argc, char **argv)
 		if (params.perf_bias) {
 			ret = msr_intel_get_perf_bias(cpu);
 			if (ret < 0) {
-				printf(_("Could not read perf-bias value\n"));
-				break;
+				fprintf(stderr,
+			_("Could not read perf-bias value[%d]\n"), ret);
+				exit(EXIT_FAILURE);
 			} else
 				printf(_("perf-bias: %d\n"), ret);
 		}
 	}
-	return ret;
+	return 0;
 }
diff --git a/tools/power/cpupower/utils/cpupower-set.c b/tools/power/cpupower/utils/cpupower-set.c
index bcf1d2f0b791..573c75f8e3f5 100644
--- a/tools/power/cpupower/utils/cpupower-set.c
+++ b/tools/power/cpupower/utils/cpupower-set.c
@@ -19,8 +19,6 @@
 
 static struct option set_opts[] = {
 	{ .name = "perf-bias",	.has_arg = required_argument,	.flag = NULL,	.val = 'b'},
-	{ .name = "sched-mc",	.has_arg = required_argument,	.flag = NULL,	.val = 'm'},
-	{ .name = "sched-smt",	.has_arg = required_argument,	.flag = NULL,	.val = 's'},
 	{ },
 };
 
@@ -38,13 +36,11 @@ int cmd_set(int argc, char **argv)
 
 	union {
 		struct {
-			int sched_mc:1;
-			int sched_smt:1;
 			int perf_bias:1;
 		};
 		int params;
 	} params;
-	int sched_mc = 0, sched_smt = 0, perf_bias = 0;
+	int perf_bias = 0;
 	int ret = 0;
 
 	setlocale(LC_ALL, "");
@@ -52,7 +48,7 @@ int cmd_set(int argc, char **argv)
 
 	params.params = 0;
 	/* parameter parsing */
-	while ((ret = getopt_long(argc, argv, "m:s:b:",
+	while ((ret = getopt_long(argc, argv, "b:",
 						set_opts, NULL)) != -1) {
 		switch (ret) {
 		case 'b':
@@ -66,28 +62,6 @@ int cmd_set(int argc, char **argv)
 			}
 			params.perf_bias = 1;
 			break;
-		case 'm':
-			if (params.sched_mc)
-				print_wrong_arg_exit();
-			sched_mc = atoi(optarg);
-			if (sched_mc < 0 || sched_mc > 2) {
-				printf(_("--sched-mc param out "
-					 "of range [0-%d]\n"), 2);
-				print_wrong_arg_exit();
-			}
-			params.sched_mc = 1;
-			break;
-		case 's':
-			if (params.sched_smt)
-				print_wrong_arg_exit();
-			sched_smt = atoi(optarg);
-			if (sched_smt < 0 || sched_smt > 2) {
-				printf(_("--sched-smt param out "
-					 "of range [0-%d]\n"), 2);
-				print_wrong_arg_exit();
-			}
-			params.sched_smt = 1;
-			break;
 		default:
 			print_wrong_arg_exit();
 		}
@@ -96,19 +70,6 @@ int cmd_set(int argc, char **argv)
 	if (!params.params)
 		print_wrong_arg_exit();
 
-	if (params.sched_mc) {
-		ret = sysfs_set_sched("mc", sched_mc);
-		if (ret)
-			fprintf(stderr, _("Error setting sched-mc %s\n"),
-				(ret == -ENODEV) ? "not supported" : "");
-	}
-	if (params.sched_smt) {
-		ret = sysfs_set_sched("smt", sched_smt);
-		if (ret)
-			fprintf(stderr, _("Error setting sched-smt %s\n"),
-				(ret == -ENODEV) ? "not supported" : "");
-	}
-
 	/* Default is: set all CPUs */
 	if (bitmask_isallclear(cpus_chosen))
 		bitmask_setall(cpus_chosen);
diff --git a/tools/power/cpupower/utils/cpupower.c b/tools/power/cpupower/utils/cpupower.c
index 7efc570ffbaa..7cdcf88659c7 100644
--- a/tools/power/cpupower/utils/cpupower.c
+++ b/tools/power/cpupower/utils/cpupower.c
@@ -12,6 +12,9 @@
 #include <string.h>
 #include <unistd.h>
 #include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/utsname.h>
 
 #include "builtin.h"
 #include "helpers/helpers.h"
@@ -169,6 +172,8 @@ int main(int argc, const char *argv[])
 {
 	const char *cmd;
 	unsigned int i, ret;
+	struct stat statbuf;
+	struct utsname uts;
 
 	cpus_chosen = bitmask_alloc(sysconf(_SC_NPROCESSORS_CONF));
 
@@ -195,6 +200,15 @@ int main(int argc, const char *argv[])
 
 	get_cpu_info(0, &cpupower_cpu_info);
 	run_as_root = !getuid();
+	if (run_as_root) {
+		ret = uname(&uts);
+		if (!ret && !strcmp(uts.machine, "x86_64") &&
+		    stat("/dev/cpu/0/msr", &statbuf) != 0) {
+			if (system("modprobe msr") == -1)
+	fprintf(stderr, _("MSR access not available.\n"));
+		}
+	}
+		
 
 	for (i = 0; i < ARRAY_SIZE(commands); i++) {
 		struct cmd_struct *p = commands + i;