Merge tag 'v4.1-rc5' into x86/mm, to refresh the tree before applying new changes

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

10 files changed, 76 insertions, 46 deletions

diff --git a/tools/lib/lockdep/Makefile b/tools/lib/lockdep/Makefile
index 0c356fb65022..18ffccf00426 100644
--- a/tools/lib/lockdep/Makefile
+++ b/tools/lib/lockdep/Makefile
@@ -14,9 +14,10 @@ define allow-override
     $(eval $(1) = $(2)))
 endef
 
-# Allow setting CC and AR, or setting CROSS_COMPILE as a prefix.
+# Allow setting CC and AR and LD, or setting CROSS_COMPILE as a prefix.
 $(call allow-override,CC,$(CROSS_COMPILE)gcc)
 $(call allow-override,AR,$(CROSS_COMPILE)ar)
+$(call allow-override,LD,$(CROSS_COMPILE)ld)
 
 INSTALL = install
 
diff --git a/tools/lib/lockdep/uinclude/linux/kernel.h b/tools/lib/lockdep/uinclude/linux/kernel.h
index a11e3c357be7..cd2cc59a5da7 100644
--- a/tools/lib/lockdep/uinclude/linux/kernel.h
+++ b/tools/lib/lockdep/uinclude/linux/kernel.h
@@ -28,6 +28,9 @@
 #define __init
 #define noinline
 #define list_add_tail_rcu list_add_tail
+#define list_for_each_entry_rcu list_for_each_entry
+#define barrier() 
+#define synchronize_sched()
 
 #ifndef CALLER_ADDR0
 #define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0))
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index c699dc35eef9..d31a7bbd7cee 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -24,7 +24,7 @@ unexport MAKEFLAGS
 # (To override it, run 'make JOBS=1' and similar.)
 #
 ifeq ($(JOBS),)
-  JOBS := $(shell egrep -c '^processor|^CPU' /proc/cpuinfo 2>/dev/null)
+  JOBS := $(shell (getconf _NPROCESSORS_ONLN || egrep -c '^processor|^CPU[0-9]' /proc/cpuinfo) 2>/dev/null)
   ifeq ($(JOBS),0)
     JOBS := 1
   endif
diff --git a/tools/testing/selftests/x86/Makefile b/tools/testing/selftests/x86/Makefile
index ddf63569df5a..5bdb781163d1 100644
--- a/tools/testing/selftests/x86/Makefile
+++ b/tools/testing/selftests/x86/Makefile
@@ -1,4 +1,8 @@
-.PHONY: all all_32 all_64 check_build32 clean run_tests
+all:
+
+include ../lib.mk
+
+.PHONY: all all_32 all_64 warn_32bit_failure clean
 
 TARGETS_C_BOTHBITS := sigreturn single_step_syscall
 
@@ -7,42 +11,47 @@ BINARIES_64 := $(TARGETS_C_BOTHBITS:%=%_64)
 
 CFLAGS := -O2 -g -std=gnu99 -pthread -Wall
 
-UNAME_P := $(shell uname -p)
+UNAME_M := $(shell uname -m)
+CAN_BUILD_I386 := $(shell ./check_cc.sh $(CC) trivial_32bit_program.c -m32)
+CAN_BUILD_X86_64 := $(shell ./check_cc.sh $(CC) trivial_64bit_program.c)
 
-# Always build 32-bit tests
+ifeq ($(CAN_BUILD_I386),1)
 all: all_32
+TEST_PROGS += $(BINARIES_32)
+endif
 
-# If we're on a 64-bit host, build 64-bit tests as well
-ifeq ($(shell uname -p),x86_64)
+ifeq ($(CAN_BUILD_X86_64),1)
 all: all_64
+TEST_PROGS += $(BINARIES_64)
 endif
 
-all_32: check_build32 $(BINARIES_32)
+all_32: $(BINARIES_32)
 
 all_64: $(BINARIES_64)
 
 clean:
         $(RM) $(BINARIES_32) $(BINARIES_64)
 
-run_tests:
-        ./run_x86_tests.sh
-
 $(TARGETS_C_BOTHBITS:%=%_32): %_32: %.c
         $(CC) -m32 -o $@ $(CFLAGS) $(EXTRA_CFLAGS) $^ -lrt -ldl
 
 $(TARGETS_C_BOTHBITS:%=%_64): %_64: %.c
         $(CC) -m64 -o $@ $(CFLAGS) $(EXTRA_CFLAGS) $^ -lrt -ldl
 
-check_build32:
-        @if ! $(CC) -m32 -o /dev/null trivial_32bit_program.c; then     \
-          echo "Warning: you seem to have a broken 32-bit build" 2>&1;  \
-          echo "environment.  If you are using a Debian-like";          \
-          echo " distribution, try:";                                   \
-          echo "";                                                      \
-          echo "  apt-get install gcc-multilib libc6-i386 libc6-dev-i386"; \
-          echo "";                                                      \
-          echo "If you are using a Fedora-like distribution, try:";     \
-          echo "";                                                      \
-          echo "  yum install glibc-devel.*i686";                       \
-          exit 1;                                                       \
-        fi
+# x86_64 users should be encouraged to install 32-bit libraries
+ifeq ($(CAN_BUILD_I386)$(CAN_BUILD_X86_64),01)
+all: warn_32bit_failure
+
+warn_32bit_failure:
+        @echo "Warning: you seem to have a broken 32-bit build" 2>&1;   \
+        echo "environment.  This will reduce test coverage of 64-bit" 2>&1; \
+        echo "kernels.  If you are using a Debian-like distribution," 2>&1; \
+        echo "try:"; 2>&1; \
+        echo "";                                                        \
+        echo "  apt-get install gcc-multilib libc6-i386 libc6-dev-i386"; \
+        echo "";                                                        \
+        echo "If you are using a Fedora-like distribution, try:";       \
+        echo "";                                                        \
+        echo "  yum install glibc-devel.*i686";                         \
+        exit 0;
+endif
diff --git a/tools/testing/selftests/x86/check_cc.sh b/tools/testing/selftests/x86/check_cc.sh
new file mode 100755
index 000000000000..172d3293fb7b
--- /dev/null
+++ b/tools/testing/selftests/x86/check_cc.sh
@@ -0,0 +1,16 @@
+#!/bin/sh
+# check_cc.sh - Helper to test userspace compilation support
+# Copyright (c) 2015 Andrew Lutomirski
+# GPL v2
+
+CC="$1"
+TESTPROG="$2"
+shift 2
+
+if "$CC" -o /dev/null "$TESTPROG" -O0 "$@" 2>/dev/null; then
+    echo 1
+else
+    echo 0
+fi
+
+exit 0
diff --git a/tools/testing/selftests/x86/run_x86_tests.sh b/tools/testing/selftests/x86/run_x86_tests.sh
deleted file mode 100644
index 3fc19b376812..000000000000
--- a/tools/testing/selftests/x86/run_x86_tests.sh
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/bin/bash
-
-# This is deliberately minimal.  IMO kselftests should provide a standard
-# script here.
-./sigreturn_32 || exit 1
-./single_step_syscall_32 || exit 1
-
-if [[ "$uname -p" -eq "x86_64" ]]; then
-    ./sigreturn_64 || exit 1
-    ./single_step_syscall_64 || exit 1
-fi
-
-exit 0
diff --git a/tools/testing/selftests/x86/trivial_32bit_program.c b/tools/testing/selftests/x86/trivial_32bit_program.c
index 2e231beb0a39..fabdf0f51621 100644
--- a/tools/testing/selftests/x86/trivial_32bit_program.c
+++ b/tools/testing/selftests/x86/trivial_32bit_program.c
@@ -4,6 +4,10 @@
  * GPL v2
  */
 
+#ifndef __i386__
+# error wrong architecture
+#endif
+
 #include <stdio.h>
 
 int main()
diff --git a/tools/testing/selftests/x86/trivial_64bit_program.c b/tools/testing/selftests/x86/trivial_64bit_program.c
new file mode 100644
index 000000000000..b994946c40fb
--- /dev/null
+++ b/tools/testing/selftests/x86/trivial_64bit_program.c
@@ -0,0 +1,18 @@
+/*
+ * Trivial program to check that we have a valid 32-bit build environment.
+ * Copyright (c) 2015 Andy Lutomirski
+ * GPL v2
+ */
+
+#ifndef __x86_64__
+# error wrong architecture
+#endif
+
+#include <stdio.h>
+
+int main()
+{
+        printf("\n");
+
+        return 0;
+}
diff --git a/tools/thermal/tmon/Makefile b/tools/thermal/tmon/Makefile
index 0788621c8d76..2e83dd3655a2 100644
--- a/tools/thermal/tmon/Makefile
+++ b/tools/thermal/tmon/Makefile
@@ -12,10 +12,6 @@ TARGET=tmon
 INSTALL_PROGRAM=install -m 755 -p
 DEL_FILE=rm -f
 
-INSTALL_CONFIGFILE=install -m 644 -p
-CONFIG_FILE=
-CONFIG_PATH=
-
 # Static builds might require -ltinfo, for instance
 ifneq ($(findstring -static, $(LDFLAGS)),)
 STATIC := --static
@@ -38,13 +34,9 @@ valgrind: tmon
 install:
         - mkdir -p $(INSTALL_ROOT)/$(BINDIR)
         - $(INSTALL_PROGRAM) "$(TARGET)" "$(INSTALL_ROOT)/$(BINDIR)/$(TARGET)"
-        - mkdir -p $(INSTALL_ROOT)/$(CONFIG_PATH)
-        - $(INSTALL_CONFIGFILE) "$(CONFIG_FILE)" "$(INSTALL_ROOT)/$(CONFIG_PATH)"
 
 uninstall:
         $(DEL_FILE) "$(INSTALL_ROOT)/$(BINDIR)/$(TARGET)"
-        $(CONFIG_FILE) "$(CONFIG_PATH)"
-
 
 clean:
         find . -name "*.o" | xargs $(DEL_FILE)
diff --git a/tools/vm/Makefile b/tools/vm/Makefile
index ac884b65a072..93aadaf7ff63 100644
--- a/tools/vm/Makefile
+++ b/tools/vm/Makefile
@@ -3,7 +3,7 @@
 TARGETS=page-types slabinfo page_owner_sort
 
 LIB_DIR = ../lib/api
-LIBS = $(LIB_DIR)/libapikfs.a
+LIBS = $(LIB_DIR)/libapi.a
 
 CC = $(CROSS_COMPILE)gcc
 CFLAGS = -Wall -Wextra -I../lib/