Merge branch 'perf/urgent' into perf/core, to pick up latest fixes and refresh the tree

Signed-off-by: Ingo Molnar <mingo@kernel.org>

98 files changed, 8390 insertions, 1445 deletions

diff --git a/tools/build/Makefile.build b/tools/build/Makefile.build
index e279a71c650d..c46b20e4ad87 100644
--- a/tools/build/Makefile.build
+++ b/tools/build/Makefile.build
@@ -19,15 +19,9 @@ else
   Q=@
 endif
 
-ifneq ($(filter 4.%,$(MAKE_VERSION)),)	# make-4
-ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
+ifneq ($(findstring s,$(filter-out --%,$(MAKEFLAGS))),)
   quiet=silent_
 endif
-else					# make-3.8x
-ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
-  quiet=silent_
-endif
-endif
 
 build-dir := $(srctree)/tools/build
 
diff --git a/tools/hv/bondvf.sh b/tools/hv/bondvf.sh
index d85968cb1bf2..89b25068cd98 100755
--- a/tools/hv/bondvf.sh
+++ b/tools/hv/bondvf.sh
@@ -102,15 +102,30 @@ function create_bond_cfg_redhat {
 }
 
 function del_eth_cfg_ubuntu {
-	local fn=$cfgdir/interfaces
+	local mainfn=$cfgdir/interfaces
+	local fnlist=( $mainfn )
+
+	local dirlist=(`awk '/^[ \t]*source/{print $2}' $mainfn`)
+
+	local i
+	for i in "${dirlist[@]}"
+	do
+		fnlist+=(`ls $i 2>/dev/null`)
+	done
+
 	local tmpfl=$(mktemp)
 
 	local nic_start='^[ \t]*(auto|iface|mapping|allow-.*)[ \t]+'$1
 	local nic_end='^[ \t]*(auto|iface|mapping|allow-.*|source)'
 
-	awk "/$nic_end/{x=0} x{next} /$nic_start/{x=1;next} 1"  $fn >$tmpfl
+	local fn
+	for fn in "${fnlist[@]}"
+	do
+		awk "/$nic_end/{x=0} x{next} /$nic_start/{x=1;next} 1" \
+			$fn >$tmpfl
 
-	cp $tmpfl $fn
+		cp $tmpfl $fn
+	done
 
 	rm $tmpfl
 }
@@ -119,7 +134,6 @@ function create_eth_cfg_ubuntu {
 	local fn=$cfgdir/interfaces
 
 	del_eth_cfg_ubuntu $1
-
 	echo $'\n'auto $1 >>$fn
 	echo iface $1 inet manual >>$fn
 	echo bond-master $2 >>$fn
@@ -128,7 +142,10 @@ function create_eth_cfg_ubuntu {
 function create_eth_cfg_pri_ubuntu {
 	local fn=$cfgdir/interfaces
 
-	create_eth_cfg_ubuntu $1 $2
+	del_eth_cfg_ubuntu $1
+	echo $'\n'allow-hotplug $1 >>$fn
+	echo iface $1 inet manual >>$fn
+	echo bond-master $2 >>$fn
 	echo bond-primary $1 >>$fn
 }
 
@@ -153,7 +170,11 @@ function create_eth_cfg_suse {
 }
 
 function create_eth_cfg_pri_suse {
-	create_eth_cfg_suse $1
+	local fn=$cfgdir/ifcfg-$1
+
+	rm -f $fn
+	echo BOOTPROTO=none >>$fn
+	echo STARTMODE=hotplug >>$fn
 }
 
 function create_bond_cfg_suse {
diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c
index f1758fcbc37d..88b20e007c05 100644
--- a/tools/hv/hv_kvp_daemon.c
+++ b/tools/hv/hv_kvp_daemon.c
@@ -39,6 +39,7 @@
 #include <fcntl.h>
 #include <dirent.h>
 #include <net/if.h>
+#include <limits.h>
 #include <getopt.h>
 
 /*
@@ -97,6 +98,8 @@ static struct utsname uts_buf;
 #define KVP_SCRIPTS_PATH "/usr/libexec/hypervkvpd/"
 #endif
 
+#define KVP_NET_DIR "/sys/class/net/"
+
 #define MAX_FILE_NAME 100
 #define ENTRIES_PER_BLOCK 50
 
@@ -596,26 +599,21 @@ static char *kvp_get_if_name(char *guid)
 	DIR *dir;
 	struct dirent *entry;
 	FILE    *file;
-	char    *p, *q, *x;
+	char    *p, *x;
 	char    *if_name = NULL;
 	char    buf[256];
-	char *kvp_net_dir = "/sys/class/net/";
-	char dev_id[256];
+	char dev_id[PATH_MAX];
 
-	dir = opendir(kvp_net_dir);
+	dir = opendir(KVP_NET_DIR);
 	if (dir == NULL)
 		return NULL;
 
-	snprintf(dev_id, sizeof(dev_id), "%s", kvp_net_dir);
-	q = dev_id + strlen(kvp_net_dir);
-
 	while ((entry = readdir(dir)) != NULL) {
 		/*
 		 * Set the state for the next pass.
 		 */
-		*q = '\0';
-		strcat(dev_id, entry->d_name);
-		strcat(dev_id, "/device/device_id");
+		snprintf(dev_id, sizeof(dev_id), "%s%s/device/device_id",
+			 KVP_NET_DIR, entry->d_name);
 
 		file = fopen(dev_id, "r");
 		if (file == NULL)
@@ -653,12 +651,12 @@ static char *kvp_if_name_to_mac(char *if_name)
 	FILE    *file;
 	char    *p, *x;
 	char    buf[256];
-	char addr_file[256];
+	char addr_file[PATH_MAX];
 	unsigned int i;
 	char *mac_addr = NULL;
 
-	snprintf(addr_file, sizeof(addr_file), "%s%s%s", "/sys/class/net/",
-		if_name, "/address");
+	snprintf(addr_file, sizeof(addr_file), "%s%s%s", KVP_NET_DIR,
+		 if_name, "/address");
 
 	file = fopen(addr_file, "r");
 	if (file == NULL)
@@ -688,28 +686,22 @@ static char *kvp_mac_to_if_name(char *mac)
 	DIR *dir;
 	struct dirent *entry;
 	FILE    *file;
-	char    *p, *q, *x;
+	char    *p, *x;
 	char    *if_name = NULL;
 	char    buf[256];
-	char *kvp_net_dir = "/sys/class/net/";
-	char dev_id[256];
+	char dev_id[PATH_MAX];
 	unsigned int i;
 
-	dir = opendir(kvp_net_dir);
+	dir = opendir(KVP_NET_DIR);
 	if (dir == NULL)
 		return NULL;
 
-	snprintf(dev_id, sizeof(dev_id), "%s", kvp_net_dir);
-	q = dev_id + strlen(kvp_net_dir);
-
 	while ((entry = readdir(dir)) != NULL) {
 		/*
 		 * Set the state for the next pass.
 		 */
-		*q = '\0';
-
-		strcat(dev_id, entry->d_name);
-		strcat(dev_id, "/address");
+		snprintf(dev_id, sizeof(dev_id), "%s%s/address", KVP_NET_DIR,
+			 entry->d_name);
 
 		file = fopen(dev_id, "r");
 		if (file == NULL)
@@ -1218,9 +1210,9 @@ static int process_ip_string(FILE *f, char *ip_string, int type)
 static int kvp_set_ip_info(char *if_name, struct hv_kvp_ipaddr_value *new_val)
 {
 	int error = 0;
-	char if_file[128];
+	char if_file[PATH_MAX];
 	FILE *file;
-	char cmd[512];
+	char cmd[PATH_MAX];
 	char *mac_addr;
 
 	/*
diff --git a/tools/hv/hv_vss_daemon.c b/tools/hv/hv_vss_daemon.c
index e0829809c897..7ba54195934c 100644
--- a/tools/hv/hv_vss_daemon.c
+++ b/tools/hv/hv_vss_daemon.c
@@ -261,7 +261,9 @@ int main(int argc, char *argv[])
 		if (len != sizeof(struct hv_vss_msg)) {
 			syslog(LOG_ERR, "write failed; error: %d %s", errno,
 			       strerror(errno));
-			exit(EXIT_FAILURE);
+
+			if (op == VSS_OP_FREEZE)
+				vss_operate(VSS_OP_THAW);
 		}
 	}
 
diff --git a/tools/iio/Makefile b/tools/iio/Makefile
index 5446d625e17d..8f08e03a9a5e 100644
--- a/tools/iio/Makefile
+++ b/tools/iio/Makefile
@@ -1,5 +1,5 @@
 CC = $(CROSS_COMPILE)gcc
-CFLAGS += -Wall -g -D_GNU_SOURCE
+CFLAGS += -Wall -g -D_GNU_SOURCE -D__EXPORTED_HEADERS__ -I../../include/uapi -I../../include
 
 BINDIR=usr/bin
 INSTALL_PROGRAM=install -m 755 -p
diff --git a/tools/iio/iio_utils.h b/tools/iio/iio_utils.h
index 780f2014f8fa..8b379da26e35 100644
--- a/tools/iio/iio_utils.h
+++ b/tools/iio/iio_utils.h
@@ -13,7 +13,7 @@
 #include <stdint.h>
 
 /* Made up value to limit allocation sizes */
-#define IIO_MAX_NAME_LENGTH 30
+#define IIO_MAX_NAME_LENGTH 64
 
 #define FORMAT_SCAN_ELEMENTS_DIR "%s/scan_elements"
 #define FORMAT_TYPE_FILE "%s_type"
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index 94dfa9def355..ce2988be4f0e 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -82,6 +82,11 @@ enum bpf_cmd {
 	BPF_PROG_ATTACH,
 	BPF_PROG_DETACH,
 	BPF_PROG_TEST_RUN,
+	BPF_PROG_GET_NEXT_ID,
+	BPF_MAP_GET_NEXT_ID,
+	BPF_PROG_GET_FD_BY_ID,
+	BPF_MAP_GET_FD_BY_ID,
+	BPF_OBJ_GET_INFO_BY_FD,
 };
 
 enum bpf_map_type {
@@ -115,12 +120,14 @@ enum bpf_prog_type {
 	BPF_PROG_TYPE_LWT_IN,
 	BPF_PROG_TYPE_LWT_OUT,
 	BPF_PROG_TYPE_LWT_XMIT,
+	BPF_PROG_TYPE_SOCK_OPS,
 };
 
 enum bpf_attach_type {
 	BPF_CGROUP_INET_INGRESS,
 	BPF_CGROUP_INET_EGRESS,
 	BPF_CGROUP_INET_SOCK_CREATE,
+	BPF_CGROUP_SOCK_OPS,
 	__MAX_BPF_ATTACH_TYPE
 };
 
@@ -209,6 +216,21 @@ union bpf_attr {
 		__u32		repeat;
 		__u32		duration;
 	} test;
+
+	struct { /* anonymous struct used by BPF_*_GET_*_ID */
+		union {
+			__u32		start_id;
+			__u32		prog_id;
+			__u32		map_id;
+		};
+		__u32		next_id;
+	};
+
+	struct { /* anonymous struct used by BPF_OBJ_GET_INFO_BY_FD */
+		__u32		bpf_fd;
+		__u32		info_len;
+		__aligned_u64	info;
+	} info;
 } __attribute__((aligned(8)));
 
 /* BPF helper function descriptions:
@@ -313,8 +335,11 @@ union bpf_attr {
  *     @flags: room for future extensions
  *     Return: 0 on success or negative error
  *
- * u64 bpf_perf_event_read(&map