diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 8f50afe..ac52598 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -124,14 +124,14 @@
 LK_PATH=$(LK_DIR)
 
 ifneq ($(OUTPUT),)
-	TE_PATH=$(OUTPUT)
+  TE_PATH=$(OUTPUT)
 ifneq ($(subdir),)
-	LK_PATH=$(OUTPUT)$(LK_DIR)
+  LK_PATH=$(OUTPUT)$(LK_DIR)
 else
-	LK_PATH=$(OUTPUT)
+  LK_PATH=$(OUTPUT)
 endif
 else
-	TE_PATH=$(TRACE_EVENT_DIR)
+  TE_PATH=$(TRACE_EVENT_DIR)
 endif
 
 LIBTRACEEVENT = $(TE_PATH)libtraceevent.a
@@ -175,10 +175,10 @@
 
 # Set paths to tools early so that they can be used for version tests.
 ifndef SHELL_PATH
-	SHELL_PATH = /bin/sh
+  SHELL_PATH = /bin/sh
 endif
 ifndef PERL_PATH
-	PERL_PATH = /usr/bin/perl
+  PERL_PATH = /usr/bin/perl
 endif
 
 export PERL_PATH
@@ -433,7 +433,7 @@
 -include arch/$(ARCH)/Makefile
 
 ifneq ($(OUTPUT),)
-	CFLAGS += -I$(OUTPUT)
+  CFLAGS += -I$(OUTPUT)
 endif
 
 ifdef NO_LIBELF
@@ -452,67 +452,67 @@
 
 else # NO_LIBELF
 ifndef NO_DWARF
-	LIB_OBJS += $(OUTPUT)util/probe-finder.o
-	LIB_OBJS += $(OUTPUT)util/dwarf-aux.o
+  LIB_OBJS += $(OUTPUT)util/probe-finder.o
+  LIB_OBJS += $(OUTPUT)util/dwarf-aux.o
 endif # NO_DWARF
 endif # NO_LIBELF
 
 ifndef NO_LIBUNWIND
-	LIB_OBJS += $(OUTPUT)util/unwind.o
+  LIB_OBJS += $(OUTPUT)util/unwind.o
 endif
 
 ifndef NO_LIBAUDIT
-	BUILTIN_OBJS += $(OUTPUT)builtin-trace.o
+  BUILTIN_OBJS += $(OUTPUT)builtin-trace.o
 endif
 
 ifndef NO_SLANG
-	LIB_OBJS += $(OUTPUT)ui/browser.o
-	LIB_OBJS += $(OUTPUT)ui/browsers/annotate.o
-	LIB_OBJS += $(OUTPUT)ui/browsers/hists.o
-	LIB_OBJS += $(OUTPUT)ui/browsers/map.o
-	LIB_OBJS += $(OUTPUT)ui/browsers/scripts.o
-	LIB_OBJS += $(OUTPUT)ui/tui/setup.o
-	LIB_OBJS += $(OUTPUT)ui/tui/util.o
-	LIB_OBJS += $(OUTPUT)ui/tui/helpline.o
-	LIB_OBJS += $(OUTPUT)ui/tui/progress.o
-	LIB_H += ui/browser.h
-	LIB_H += ui/browsers/map.h
-	LIB_H += ui/keysyms.h
-	LIB_H += ui/libslang.h
+  LIB_OBJS += $(OUTPUT)ui/browser.o
+  LIB_OBJS += $(OUTPUT)ui/browsers/annotate.o
+  LIB_OBJS += $(OUTPUT)ui/browsers/hists.o
+  LIB_OBJS += $(OUTPUT)ui/browsers/map.o
+  LIB_OBJS += $(OUTPUT)ui/browsers/scripts.o
+  LIB_OBJS += $(OUTPUT)ui/tui/setup.o
+  LIB_OBJS += $(OUTPUT)ui/tui/util.o
+  LIB_OBJS += $(OUTPUT)ui/tui/helpline.o
+  LIB_OBJS += $(OUTPUT)ui/tui/progress.o
+  LIB_H += ui/browser.h
+  LIB_H += ui/browsers/map.h
+  LIB_H += ui/keysyms.h
+  LIB_H += ui/libslang.h
 endif
 
 ifndef NO_GTK2
-	LIB_OBJS += $(OUTPUT)ui/gtk/browser.o
-	LIB_OBJS += $(OUTPUT)ui/gtk/hists.o
-	LIB_OBJS += $(OUTPUT)ui/gtk/setup.o
-	LIB_OBJS += $(OUTPUT)ui/gtk/util.o
-	LIB_OBJS += $(OUTPUT)ui/gtk/helpline.o
-	LIB_OBJS += $(OUTPUT)ui/gtk/progress.o
-	LIB_OBJS += $(OUTPUT)ui/gtk/annotate.o
+  LIB_OBJS += $(OUTPUT)ui/gtk/browser.o
+  LIB_OBJS += $(OUTPUT)ui/gtk/hists.o
+  LIB_OBJS += $(OUTPUT)ui/gtk/setup.o
+  LIB_OBJS += $(OUTPUT)ui/gtk/util.o
+  LIB_OBJS += $(OUTPUT)ui/gtk/helpline.o
+  LIB_OBJS += $(OUTPUT)ui/gtk/progress.o
+  LIB_OBJS += $(OUTPUT)ui/gtk/annotate.o
 endif
 
 ifndef NO_LIBPERL
-	LIB_OBJS += $(OUTPUT)util/scripting-engines/trace-event-perl.o
-	LIB_OBJS += $(OUTPUT)scripts/perl/Perf-Trace-Util/Context.o
+  LIB_OBJS += $(OUTPUT)util/scripting-engines/trace-event-perl.o
+  LIB_OBJS += $(OUTPUT)scripts/perl/Perf-Trace-Util/Context.o
 endif
 
 ifndef NO_LIBPYTHON
-	LIB_OBJS += $(OUTPUT)util/scripting-engines/trace-event-python.o
-	LIB_OBJS += $(OUTPUT)scripts/python/Perf-Trace-Util/Context.o
+  LIB_OBJS += $(OUTPUT)util/scripting-engines/trace-event-python.o
+  LIB_OBJS += $(OUTPUT)scripts/python/Perf-Trace-Util/Context.o
 endif
 
 ifeq ($(NO_PERF_REGS),0)
-	ifeq ($(ARCH),x86)
-		LIB_H += arch/x86/include/perf_regs.h
-	endif
+  ifeq ($(ARCH),x86)
+    LIB_H += arch/x86/include/perf_regs.h
+  endif
 endif
 
 ifndef NO_LIBNUMA
-	BUILTIN_OBJS += $(OUTPUT)bench/numa.o
+  BUILTIN_OBJS += $(OUTPUT)bench/numa.o
 endif
 
 ifdef ASCIIDOC8
-	export ASCIIDOC8
+  export ASCIIDOC8
 endif
 
 LIBS = -Wl,--whole-archive $(PERFLIBS) -Wl,--no-whole-archive -Wl,--start-group $(EXTLIBS) -Wl,--end-group
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index cc464f1..9765993 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -1,37 +1,37 @@
 uname_M := $(shell uname -m 2>/dev/null || echo not)
 
 ARCH ?= $(shell echo $(uname_M) | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \
-				  -e s/arm.*/arm/ -e s/sa110/arm/ \
-				  -e s/s390x/s390/ -e s/parisc64/parisc/ \
-				  -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
-				  -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ )
+                                  -e s/arm.*/arm/ -e s/sa110/arm/ \
+                                  -e s/s390x/s390/ -e s/parisc64/parisc/ \
+                                  -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
+                                  -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ )
 NO_PERF_REGS := 1
 CFLAGS := $(EXTRA_CFLAGS) $(EXTRA_WARNINGS)
 
 # Additional ARCH settings for x86
 ifeq ($(ARCH),i386)
-	override ARCH := x86
-	NO_PERF_REGS := 0
-	LIBUNWIND_LIBS = -lunwind -lunwind-x86
+  override ARCH := x86
+  NO_PERF_REGS := 0
+  LIBUNWIND_LIBS = -lunwind -lunwind-x86
 endif
 
 ifeq ($(ARCH),x86_64)
-	override ARCH := x86
-	IS_X86_64 := 0
-	ifeq (, $(findstring m32,$(CFLAGS)))
-		IS_X86_64 := $(shell echo __x86_64__ | ${CC} -E -x c - | tail -n 1)
-	endif
-	ifeq (${IS_X86_64}, 1)
-		RAW_ARCH := x86_64
-		CFLAGS += -DARCH_X86_64
-		ARCH_INCLUDE = ../../arch/x86/lib/memcpy_64.S ../../arch/x86/lib/memset_64.S
-	endif
-	NO_PERF_REGS := 0
-	LIBUNWIND_LIBS = -lunwind -lunwind-x86_64
+  override ARCH := x86
+  IS_X86_64 := 0
+  ifeq (, $(findstring m32,$(CFLAGS)))
+    IS_X86_64 := $(shell echo __x86_64__ | ${CC} -E -x c - | tail -n 1)
+  endif
+  ifeq (${IS_X86_64}, 1)
+    RAW_ARCH := x86_64
+    CFLAGS += -DARCH_X86_64
+    ARCH_INCLUDE = ../../arch/x86/lib/memcpy_64.S ../../arch/x86/lib/memset_64.S
+  endif
+  NO_PERF_REGS := 0
+  LIBUNWIND_LIBS = -lunwind -lunwind-x86_64
 endif
 
 ifeq ($(NO_PERF_REGS),0)
-        CFLAGS += -DHAVE_PERF_REGS
+  CFLAGS += -DHAVE_PERF_REGS
 endif
 
 ifeq ($(src-perf),)
@@ -53,128 +53,128 @@
 include $(src-perf)/config/utilities.mak
 
 ifeq ($(call get-executable,$(FLEX)),)
-	dummy := $(error Error: $(FLEX) is missing on this system, please install it)
+  dummy := $(error Error: $(FLEX) is missing on this system, please install it)
 endif
 
 ifeq ($(call get-executable,$(BISON)),)
-	dummy := $(error Error: $(BISON) is missing on this system, please install it)
+  dummy := $(error Error: $(BISON) is missing on this system, please install it)
 endif
 
 # Treat warnings as errors unless directed not to
 ifneq ($(WERROR),0)
-	CFLAGS += -Werror
+  CFLAGS += -Werror
 endif
 
 ifeq ("$(origin DEBUG)", "command line")
-	PERF_DEBUG = $(DEBUG)
+  PERF_DEBUG = $(DEBUG)
 endif
 ifndef PERF_DEBUG
-	CFLAGS += -O6
+  CFLAGS += -O6
 endif
 
 ifdef PARSER_DEBUG
-	PARSER_DEBUG_BISON := -t
-	PARSER_DEBUG_FLEX  := -d
-	CFLAGS             += -DPARSER_DEBUG
+  PARSER_DEBUG_BISON := -t
+  PARSER_DEBUG_FLEX  := -d
+  CFLAGS             += -DPARSER_DEBUG
 endif
 
 CFLAGS += \
-	-fno-omit-frame-pointer \
-	-ggdb3 \
-	-funwind-tables \
-	-Wall \
-	-Wextra \
-	-std=gnu99
+  -fno-omit-frame-pointer \
+  -ggdb3 \
+  -funwind-tables \
+  -Wall \
+  -Wextra \
+  -std=gnu99
 
 EXTLIBS = -lpthread -lrt -lelf -lm
 
 ifeq ($(call try-cc,$(SOURCE_HELLO),$(CFLAGS) -Werror -fstack-protector-all,-fstack-protector-all),y)
-	CFLAGS += -fstack-protector-all
+  CFLAGS += -fstack-protector-all
 endif
 
 ifeq ($(call try-cc,$(SOURCE_HELLO),$(CFLAGS) -Werror -Wstack-protector,-Wstack-protector),y)
-	CFLAGS += -Wstack-protector
+  CFLAGS += -Wstack-protector
 endif
 
 ifeq ($(call try-cc,$(SOURCE_HELLO),$(CFLAGS) -Werror -Wvolatile-register-var,-Wvolatile-register-var),y)
-	CFLAGS += -Wvolatile-register-var
+  CFLAGS += -Wvolatile-register-var
 endif
 
 ifndef PERF_DEBUG
-	ifeq ($(call try-cc,$(SOURCE_HELLO),$(CFLAGS) -D_FORTIFY_SOURCE=2,-D_FORTIFY_SOURCE=2),y)
-		CFLAGS += -D_FORTIFY_SOURCE=2
-	endif
+  ifeq ($(call try-cc,$(SOURCE_HELLO),$(CFLAGS) -D_FORTIFY_SOURCE=2,-D_FORTIFY_SOURCE=2),y)
+    CFLAGS += -D_FORTIFY_SOURCE=2
+  endif
 endif
 
 CFLAGS += \
-	-I$(src-perf)/util/include \
-	-I$(src-perf)/arch/$(ARCH)/include \
-	-I$(srctree)/arch/$(ARCH)/include/uapi \
-	-I$(srctree)/arch/$(ARCH)/include \
-	-I$(srctree)/include/uapi \
-	-I$(srctree)/include
+  -I$(src-perf)/util/include \
+  -I$(src-perf)/arch/$(ARCH)/include \
+  -I$(srctree)/arch/$(ARCH)/include/uapi \
+  -I$(srctree)/arch/$(ARCH)/include \
+  -I$(srctree)/include/uapi \
+  -I$(srctree)/include
 
 # $(obj-perf)      for generated common-cmds.h
 # $(obj-perf)/util for generated bison/flex headers
 ifneq ($(OUTPUT),)
 CFLAGS += \
-	-I$(obj-perf)/util \
-	-I$(obj-perf)
+  -I$(obj-perf)/util \
+  -I$(obj-perf)
 endif
 
 CFLAGS += \
-	-I$(src-perf)/util \
-	-I$(src-perf) \
-	-I$(TRACE_EVENT_DIR) \
-	-I$(srctree)/tools/lib/
+  -I$(src-perf)/util \
+  -I$(src-perf) \
+  -I$(TRACE_EVENT_DIR) \
+  -I$(srctree)/tools/lib/
 
 CFLAGS += \
-	-D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE
+  -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE
 
 ifndef NO_BIONIC
 ifeq ($(call try-cc,$(SOURCE_BIONIC),$(CFLAGS),bionic),y)
-	BIONIC := 1
-	EXTLIBS := $(filter-out -lrt,$(EXTLIBS))
-	EXTLIBS := $(filter-out -lpthread,$(EXTLIBS))
+  BIONIC := 1
+  EXTLIBS := $(filter-out -lrt,$(EXTLIBS))
+  EXTLIBS := $(filter-out -lpthread,$(EXTLIBS))
 endif
 endif # NO_BIONIC
 
 ifdef NO_LIBELF
-	NO_DWARF := 1
-	NO_DEMANGLE := 1
-	NO_LIBUNWIND := 1
+  NO_DWARF := 1
+  NO_DEMANGLE := 1
+  NO_LIBUNWIND := 1
 else
 FLAGS_LIBELF=$(CFLAGS) $(LDFLAGS) $(EXTLIBS)
 ifneq ($(call try-cc,$(SOURCE_LIBELF),$(FLAGS_LIBELF),libelf),y)
-	FLAGS_GLIBC=$(CFLAGS) $(LDFLAGS)
-	ifeq ($(call try-cc,$(SOURCE_GLIBC),$(FLAGS_GLIBC),glibc),y)
-		LIBC_SUPPORT := 1
-	endif
-	ifeq ($(BIONIC),1)
-		LIBC_SUPPORT := 1
-	endif
-	ifeq ($(LIBC_SUPPORT),1)
-		msg := $(warning No libelf found, disables 'probe' tool, please install elfutils-libelf-devel/libelf-dev);
+  FLAGS_GLIBC=$(CFLAGS) $(LDFLAGS)
+  ifeq ($(call try-cc,$(SOURCE_GLIBC),$(FLAGS_GLIBC),glibc),y)
+    LIBC_SUPPORT := 1
+  endif
+  ifeq ($(BIONIC),1)
+    LIBC_SUPPORT := 1
+  endif
+  ifeq ($(LIBC_SUPPORT),1)
+    msg := $(warning No libelf found, disables 'probe' tool, please install elfutils-libelf-devel/libelf-dev);
 
-		NO_LIBELF := 1
-		NO_DWARF := 1
-		NO_DEMANGLE := 1
-	else
-		msg := $(error No gnu/libc-version.h found, please install glibc-dev[el]/glibc-static);
-	endif
+    NO_LIBELF := 1
+    NO_DWARF := 1
+    NO_DEMANGLE := 1
+  else
+    msg := $(error No gnu/libc-version.h found, please install glibc-dev[el]/glibc-static);
+  endif
 else
-	# for linking with debug library, run like:
-	# make DEBUG=1 LIBDW_DIR=/opt/libdw/
-	ifdef LIBDW_DIR
-		LIBDW_CFLAGS  := -I$(LIBDW_DIR)/include
-		LIBDW_LDFLAGS := -L$(LIBDW_DIR)/lib
-	endif
+  # for linking with debug library, run like:
+  # make DEBUG=1 LIBDW_DIR=/opt/libdw/
+  ifdef LIBDW_DIR
+    LIBDW_CFLAGS  := -I$(LIBDW_DIR)/include
+    LIBDW_LDFLAGS := -L$(LIBDW_DIR)/lib
+  endif
 
-	FLAGS_DWARF=$(CFLAGS) $(LIBDW_CFLAGS) -ldw -lelf $(LIBDW_LDFLAGS) $(LDFLAGS) $(EXTLIBS)
-	ifneq ($(call try-cc,$(SOURCE_DWARF),$(FLAGS_DWARF),libdw),y)
-		msg := $(warning No libdw.h found or old libdw.h found or elfutils is older than 0.138, disables dwarf support. Please install new elfutils-devel/libdw-dev);
-		NO_DWARF := 1
-	endif # Dwarf support
+  FLAGS_DWARF=$(CFLAGS) $(LIBDW_CFLAGS) -ldw -lelf $(LIBDW_LDFLAGS) $(LDFLAGS) $(EXTLIBS)
+  ifneq ($(call try-cc,$(SOURCE_DWARF),$(FLAGS_DWARF),libdw),y)
+    msg := $(warning No libdw.h found or old libdw.h found or elfutils is older than 0.138, disables dwarf support. Please install new elfutils-devel/libdw-dev);
+    NO_DWARF := 1
+  endif # Dwarf support
 endif # SOURCE_LIBELF
 endif # NO_LIBELF
 
@@ -182,7 +182,7 @@
 CFLAGS += -DLIBELF_SUPPORT
 FLAGS_LIBELF=$(CFLAGS) $(LDFLAGS) $(EXTLIBS)
 ifeq ($(call try-cc,$(SOURCE_ELF_MMAP),$(FLAGS_LIBELF),-DLIBELF_MMAP),y)
-	CFLAGS += -DLIBELF_MMAP
+  CFLAGS += -DLIBELF_MMAP
 endif
 
 # include ARCH specific config
@@ -190,12 +190,12 @@
 
 ifndef NO_DWARF
 ifeq ($(origin PERF_HAVE_DWARF_REGS), undefined)
-	msg := $(warning DWARF register mappings have not been defined for architecture $(ARCH), DWARF support disabled);
-	NO_DWARF := 1
+  msg := $(warning DWARF register mappings have not been defined for architecture $(ARCH), DWARF support disabled);
+  NO_DWARF := 1
 else
-	CFLAGS += -DDWARF_SUPPORT $(LIBDW_CFLAGS)
-	LDFLAGS += $(LIBDW_LDFLAGS)
-	EXTLIBS += -lelf -ldw
+  CFLAGS += -DDWARF_SUPPORT $(LIBDW_CFLAGS)
+  LDFLAGS += $(LIBDW_LDFLAGS)
+  EXTLIBS += -lelf -ldw
 endif # PERF_HAVE_DWARF_REGS
 endif # NO_DWARF
 
@@ -205,99 +205,99 @@
 CFLAGS += -DLIBELF_SUPPORT
 FLAGS_LIBELF=$(CFLAGS) $(LDFLAGS) $(EXTLIBS)
 ifeq ($(call try-cc,$(SOURCE_ELF_MMAP),$(FLAGS_LIBELF),-DLIBELF_MMAP),y)
-	CFLAGS += -DLIBELF_MMAP
+  CFLAGS += -DLIBELF_MMAP
 endif # try-cc
 endif # NO_LIBELF
 
 # There's only x86 (both 32 and 64) support for CFI unwind so far
 ifneq ($(ARCH),x86)
-	NO_LIBUNWIND := 1
+  NO_LIBUNWIND := 1
 endif
 
 ifndef NO_LIBUNWIND
 # for linking with debug library, run like:
 # make DEBUG=1 LIBUNWIND_DIR=/opt/libunwind/
 ifdef LIBUNWIND_DIR
-	LIBUNWIND_CFLAGS  := -I$(LIBUNWIND_DIR)/include
-	LIBUNWIND_LDFLAGS := -L$(LIBUNWIND_DIR)/lib
+  LIBUNWIND_CFLAGS  := -I$(LIBUNWIND_DIR)/include
+  LIBUNWIND_LDFLAGS := -L$(LIBUNWIND_DIR)/lib
 endif
 
 FLAGS_UNWIND=$(LIBUNWIND_CFLAGS) $(CFLAGS) $(LIBUNWIND_LDFLAGS) $(LDFLAGS) $(EXTLIBS) $(LIBUNWIND_LIBS)
 ifneq ($(call try-cc,$(SOURCE_LIBUNWIND),$(FLAGS_UNWIND),libunwind),y)
-	msg := $(warning No libunwind found, disabling post unwind support. Please install libunwind-dev[el] >= 0.99);
-	NO_LIBUNWIND := 1
+  msg := $(warning No libunwind found, disabling post unwind support. Please install libunwind-dev[el] >= 0.99);
+  NO_LIBUNWIND := 1
 endif # Libunwind support
 endif # NO_LIBUNWIND
 
 ifndef NO_LIBUNWIND
-	CFLAGS += -DLIBUNWIND_SUPPORT
-	EXTLIBS += $(LIBUNWIND_LIBS)
-	CFLAGS += $(LIBUNWIND_CFLAGS)
-	LDFLAGS += $(LIBUNWIND_LDFLAGS)
+  CFLAGS += -DLIBUNWIND_SUPPORT
+  EXTLIBS += $(LIBUNWIND_LIBS)
+  CFLAGS += $(LIBUNWIND_CFLAGS)
+  LDFLAGS += $(LIBUNWIND_LDFLAGS)
 endif # NO_LIBUNWIND
 
 ifndef NO_LIBAUDIT
-	FLAGS_LIBAUDIT = $(CFLAGS) $(LDFLAGS) -laudit
-	ifneq ($(call try-cc,$(SOURCE_LIBAUDIT),$(FLAGS_LIBAUDIT),libaudit),y)
-		msg := $(warning No libaudit.h found, disables 'trace' tool, please install audit-libs-devel or libaudit-dev);
-		NO_LIBAUDIT := 1
-	else
-		CFLAGS += -DLIBAUDIT_SUPPORT
-		EXTLIBS += -laudit
-	endif
+  FLAGS_LIBAUDIT = $(CFLAGS) $(LDFLAGS) -laudit
+  ifneq ($(call try-cc,$(SOURCE_LIBAUDIT),$(FLAGS_LIBAUDIT),libaudit),y)
+    msg := $(warning No libaudit.h found, disables 'trace' tool, please install audit-libs-devel or libaudit-dev);
+    NO_LIBAUDIT := 1
+  else
+    CFLAGS += -DLIBAUDIT_SUPPORT
+    EXTLIBS += -laudit
+  endif
 endif
 
 ifdef NO_NEWT
-	NO_SLANG=1
+  NO_SLANG=1
 endif
 
 ifndef NO_SLANG
-	FLAGS_SLANG=$(CFLAGS) $(LDFLAGS) $(EXTLIBS) -I/usr/include/slang -lslang
-	ifneq ($(call try-cc,$(SOURCE_SLANG),$(FLAGS_SLANG),libslang),y)
-		msg := $(warning slang not found, disables TUI support. Please install slang-devel or libslang-dev);
-		NO_SLANG := 1
-	else
-		# Fedora has /usr/include/slang/slang.h, but ubuntu /usr/include/slang.h
-		CFLAGS += -I/usr/include/slang
-		CFLAGS += -DSLANG_SUPPORT
-		EXTLIBS += -lslang
-	endif
+  FLAGS_SLANG=$(CFLAGS) $(LDFLAGS) $(EXTLIBS) -I/usr/include/slang -lslang
+  ifneq ($(call try-cc,$(SOURCE_SLANG),$(FLAGS_SLANG),libslang),y)
+    msg := $(warning slang not found, disables TUI support. Please install slang-devel or libslang-dev);
+    NO_SLANG := 1
+  else
+    # Fedora has /usr/include/slang/slang.h, but ubuntu /usr/include/slang.h
+    CFLAGS += -I/usr/include/slang
+    CFLAGS += -DSLANG_SUPPORT
+    EXTLIBS += -lslang
+  endif
 endif
 
 ifndef NO_GTK2
-	FLAGS_GTK2=$(CFLAGS) $(LDFLAGS) $(EXTLIBS) $(shell pkg-config --libs --cflags gtk+-2.0 2>/dev/null)
-	ifneq ($(call try-cc,$(SOURCE_GTK2),$(FLAGS_GTK2),gtk2),y)
-		msg := $(warning GTK2 not found, disables GTK2 support. Please install gtk2-devel or libgtk2.0-dev);
-		NO_GTK2 := 1
-	else
-		ifeq ($(call try-cc,$(SOURCE_GTK2_INFOBAR),$(FLAGS_GTK2),-DHAVE_GTK_INFO_BAR),y)
-			CFLAGS += -DHAVE_GTK_INFO_BAR
-		endif
-		CFLAGS += -DGTK2_SUPPORT
-		CFLAGS += $(shell pkg-config --cflags gtk+-2.0 2>/dev/null)
-		EXTLIBS += $(shell pkg-config --libs gtk+-2.0 2>/dev/null)
-	endif
+  FLAGS_GTK2=$(CFLAGS) $(LDFLAGS) $(EXTLIBS) $(shell pkg-config --libs --cflags gtk+-2.0 2>/dev/null)
+  ifneq ($(call try-cc,$(SOURCE_GTK2),$(FLAGS_GTK2),gtk2),y)
+    msg := $(warning GTK2 not found, disables GTK2 support. Please install gtk2-devel or libgtk2.0-dev);
+    NO_GTK2 := 1
+  else
+    ifeq ($(call try-cc,$(SOURCE_GTK2_INFOBAR),$(FLAGS_GTK2),-DHAVE_GTK_INFO_BAR),y)
+      CFLAGS += -DHAVE_GTK_INFO_BAR
+    endif
+    CFLAGS += -DGTK2_SUPPORT
+    CFLAGS += $(shell pkg-config --cflags gtk+-2.0 2>/dev/null)
+    EXTLIBS += $(shell pkg-config --libs gtk+-2.0 2>/dev/null)
+  endif
 endif
 
 grep-libs  = $(filter -l%,$(1))
 strip-libs = $(filter-out -l%,$(1))
 
 ifdef NO_LIBPERL
-	CFLAGS += -DNO_LIBPERL
+  CFLAGS += -DNO_LIBPERL
 else
-	PERL_EMBED_LDOPTS = $(shell perl -MExtUtils::Embed -e ldopts 2>/dev/null)
-	PERL_EMBED_LDFLAGS = $(call strip-libs,$(PERL_EMBED_LDOPTS))
-	PERL_EMBED_LIBADD = $(call grep-libs,$(PERL_EMBED_LDOPTS))
-	PERL_EMBED_CCOPTS = `perl -MExtUtils::Embed -e ccopts 2>/dev/null`
-	FLAGS_PERL_EMBED=$(PERL_EMBED_CCOPTS) $(PERL_EMBED_LDOPTS)
+  PERL_EMBED_LDOPTS = $(shell perl -MExtUtils::Embed -e ldopts 2>/dev/null)
+  PERL_EMBED_LDFLAGS = $(call strip-libs,$(PERL_EMBED_LDOPTS))
+  PERL_EMBED_LIBADD = $(call grep-libs,$(PERL_EMBED_LDOPTS))
+  PERL_EMBED_CCOPTS = `perl -MExtUtils::Embed -e ccopts 2>/dev/null`
+  FLAGS_PERL_EMBED=$(PERL_EMBED_CCOPTS) $(PERL_EMBED_LDOPTS)
 
-	ifneq ($(call try-cc,$(SOURCE_PERL_EMBED),$(FLAGS_PERL_EMBED),perl),y)
-		CFLAGS += -DNO_LIBPERL
-		NO_LIBPERL := 1
-	else
-		LDFLAGS += $(PERL_EMBED_LDFLAGS)
-		EXTLIBS += $(PERL_EMBED_LIBADD)
-	endif
+  ifneq ($(call try-cc,$(SOURCE_PERL_EMBED),$(FLAGS_PERL_EMBED),perl),y)
+    CFLAGS += -DNO_LIBPERL
+    NO_LIBPERL := 1
+  else
+    LDFLAGS += $(PERL_EMBED_LDFLAGS)
+    EXTLIBS += $(PERL_EMBED_LIBADD)
+  endif
 endif
 
 disable-python = $(eval $(disable-python_code))
@@ -364,69 +364,69 @@
 endif
 
 ifdef NO_DEMANGLE
-	CFLAGS += -DNO_DEMANGLE
+  CFLAGS += -DNO_DEMANGLE
 else
-	ifdef HAVE_CPLUS_DEMANGLE
-		EXTLIBS += -liberty
-		CFLAGS += -DHAVE_CPLUS_DEMANGLE
-	else
-		FLAGS_BFD=$(CFLAGS) $(LDFLAGS) $(EXTLIBS) -DPACKAGE='perf' -lbfd
-		has_bfd := $(call try-cc,$(SOURCE_BFD),$(FLAGS_BFD),libbfd)
-		ifeq ($(has_bfd),y)
-			EXTLIBS += -lbfd
-		else
-			FLAGS_BFD_IBERTY=$(FLAGS_BFD) -liberty
-			has_bfd_iberty := $(call try-cc,$(SOURCE_BFD),$(FLAGS_BFD_IBERTY),liberty)
-			ifeq ($(has_bfd_iberty),y)
-				EXTLIBS += -lbfd -liberty
-			else
-				FLAGS_BFD_IBERTY_Z=$(FLAGS_BFD_IBERTY) -lz
-				has_bfd_iberty_z := $(call try-cc,$(SOURCE_BFD),$(FLAGS_BFD_IBERTY_Z),libz)
-				ifeq ($(has_bfd_iberty_z),y)
-					EXTLIBS += -lbfd -liberty -lz
-				else
-					FLAGS_CPLUS_DEMANGLE=$(CFLAGS) $(LDFLAGS) $(EXTLIBS) -liberty
-					has_cplus_demangle := $(call try-cc,$(SOURCE_CPLUS_DEMANGLE),$(FLAGS_CPLUS_DEMANGLE),demangle)
-					ifeq ($(has_cplus_demangle),y)
-						EXTLIBS += -liberty
-						CFLAGS += -DHAVE_CPLUS_DEMANGLE
-					else
-						msg := $(warning No bfd.h/libbfd found, install binutils-dev[el]/zlib-static to gain symbol demangling)
-						CFLAGS += -DNO_DEMANGLE
-					endif
-				endif
-			endif
-		endif
-	endif
+  ifdef HAVE_CPLUS_DEMANGLE
+    EXTLIBS += -liberty
+    CFLAGS += -DHAVE_CPLUS_DEMANGLE
+  else
+    FLAGS_BFD=$(CFLAGS) $(LDFLAGS) $(EXTLIBS) -DPACKAGE='perf' -lbfd
+    has_bfd := $(call try-cc,$(SOURCE_BFD),$(FLAGS_BFD),libbfd)
+    ifeq ($(has_bfd),y)
+      EXTLIBS += -lbfd
+    else
+      FLAGS_BFD_IBERTY=$(FLAGS_BFD) -liberty
+      has_bfd_iberty := $(call try-cc,$(SOURCE_BFD),$(FLAGS_BFD_IBERTY),liberty)
+      ifeq ($(has_bfd_iberty),y)
+        EXTLIBS += -lbfd -liberty
+      else
+        FLAGS_BFD_IBERTY_Z=$(FLAGS_BFD_IBERTY) -lz
+        has_bfd_iberty_z := $(call try-cc,$(SOURCE_BFD),$(FLAGS_BFD_IBERTY_Z),libz)
+        ifeq ($(has_bfd_iberty_z),y)
+          EXTLIBS += -lbfd -liberty -lz
+        else
+          FLAGS_CPLUS_DEMANGLE=$(CFLAGS) $(LDFLAGS) $(EXTLIBS) -liberty
+          has_cplus_demangle := $(call try-cc,$(SOURCE_CPLUS_DEMANGLE),$(FLAGS_CPLUS_DEMANGLE),demangle)
+          ifeq ($(has_cplus_demangle),y)
+            EXTLIBS += -liberty
+            CFLAGS += -DHAVE_CPLUS_DEMANGLE
+          else
+            msg := $(warning No bfd.h/libbfd found, install binutils-dev[el]/zlib-static to gain symbol demangling)
+            CFLAGS += -DNO_DEMANGLE
+          endif
+        endif
+      endif
+    endif
+  endif
 endif
 
 ifndef NO_STRLCPY
-	ifeq ($(call try-cc,$(SOURCE_STRLCPY),,-DHAVE_STRLCPY),y)
-		CFLAGS += -DHAVE_STRLCPY
-	endif
+  ifeq ($(call try-cc,$(SOURCE_STRLCPY),,-DHAVE_STRLCPY),y)
+    CFLAGS += -DHAVE_STRLCPY
+  endif
 endif
 
 ifndef NO_ON_EXIT
-	ifeq ($(call try-cc,$(SOURCE_ON_EXIT),,-DHAVE_ON_EXIT),y)
-		CFLAGS += -DHAVE_ON_EXIT
-	endif
+  ifeq ($(call try-cc,$(SOURCE_ON_EXIT),,-DHAVE_ON_EXIT),y)
+    CFLAGS += -DHAVE_ON_EXIT
+  endif
 endif
 
 ifndef NO_BACKTRACE
-       ifeq ($(call try-cc,$(SOURCE_BACKTRACE),,-DBACKTRACE_SUPPORT),y)
-		CFLAGS += -DBACKTRACE_SUPPORT
-       endif
+  ifeq ($(call try-cc,$(SOURCE_BACKTRACE),,-DBACKTRACE_SUPPORT),y)
+    CFLAGS += -DBACKTRACE_SUPPORT
+  endif
 endif
 
 ifndef NO_LIBNUMA
-	FLAGS_LIBNUMA = $(CFLAGS) $(LDFLAGS) -lnuma
-	ifneq ($(call try-cc,$(SOURCE_LIBNUMA),$(FLAGS_LIBNUMA),libnuma),y)
-		msg := $(warning No numa.h found, disables 'perf bench numa mem' benchmark, please install numa-libs-devel or libnuma-dev);
-		NO_LIBNUMA := 1
-	else
-		CFLAGS += -DLIBNUMA_SUPPORT
-		EXTLIBS += -lnuma
-	endif
+  FLAGS_LIBNUMA = $(CFLAGS) $(LDFLAGS) -lnuma
+  ifneq ($(call try-cc,$(SOURCE_LIBNUMA),$(FLAGS_LIBNUMA),libnuma),y)
+    msg := $(warning No numa.h found, disables 'perf bench numa mem' benchmark, please install numa-libs-devel or libnuma-dev);
+    NO_LIBNUMA := 1
+  else
+    CFLAGS += -DLIBNUMA_SUPPORT
+    EXTLIBS += -lnuma
+  endif
 endif
 
 # Among the variables below, these: