From 6d369a09ccd8104b35646b507112d3ddca4344eb Mon Sep 17 00:00:00 2001
From: David Howells <dhowells@redhat.com>
Date: Thu, 8 Nov 2012 11:26:34 +0000
Subject: [PATCH 1/6] x86: Export asm/{svm.h,vmx.h,perf_regs.h}

Export asm/{svm.h,vmx.h,perf_regs.h} so that they can be disintegrated.

It looks from previous commits that the first two should have been exported,
but the header-y lines weren't added to the Kbuild.

I'm guessing that asm/perf_regs.h should be exported too.

Signed-off-by: David Howells <dhowells@redhat.com>
---
 arch/x86/include/asm/Kbuild | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/x86/include/asm/Kbuild b/arch/x86/include/asm/Kbuild
index 66e5f0ef0523c..79fd8a3418f9d 100644
--- a/arch/x86/include/asm/Kbuild
+++ b/arch/x86/include/asm/Kbuild
@@ -12,6 +12,7 @@ header-y += mce.h
 header-y += msr-index.h
 header-y += msr.h
 header-y += mtrr.h
+header-y += perf_regs.h
 header-y += posix_types_32.h
 header-y += posix_types_64.h
 header-y += posix_types_x32.h
@@ -19,8 +20,10 @@ header-y += prctl.h
 header-y += processor-flags.h
 header-y += ptrace-abi.h
 header-y += sigcontext32.h
+header-y += svm.h
 header-y += ucontext.h
 header-y += vm86.h
+header-y += vmx.h
 header-y += vsyscall.h
 
 genhdr-y += unistd_32.h

From ca9dfc6cc45a8ae0297188f5fed23af242cc8a8d Mon Sep 17 00:00:00 2001
From: David Howells <dhowells@redhat.com>
Date: Mon, 5 Nov 2012 15:15:24 +0000
Subject: [PATCH 2/6] tools: Define a Makefile function to do subdir processing

Define a Makefile function that can be called with $(call ...) to wrap
the subdir make invocations in tools/Makefile.

This will allow us in the next patch to insert bits in there to honour
O= flags when called from the top-level Makefile.

Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Borislav Petkov <bp@amd64.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1378.1352379110@warthog.procyon.org.uk
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/Makefile                 | 24 ++++++++++++------------
 tools/scripts/Makefile.include |  8 ++++++++
 2 files changed, 20 insertions(+), 12 deletions(-)

diff --git a/tools/Makefile b/tools/Makefile
index 3ae43947a171f..1f9a529fe544f 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -31,44 +31,44 @@ help:
 	@echo '  clean: a summary clean target to clean _all_ folders'
 
 cpupower: FORCE
-	$(QUIET_SUBDIR0)power/$@/ $(QUIET_SUBDIR1)
+	$(call descend,power/$@)
 
 firewire lguest perf usb virtio vm: FORCE
-	$(QUIET_SUBDIR0)$@/ $(QUIET_SUBDIR1)
+	$(call descend,$@)
 
 selftests: FORCE
-	$(QUIET_SUBDIR0)testing/$@/ $(QUIET_SUBDIR1)
+	$(call descend,testing/$@)
 
 turbostat x86_energy_perf_policy: FORCE
-	$(QUIET_SUBDIR0)power/x86/$@/ $(QUIET_SUBDIR1)
+	$(call descend,power/x86/$@)
 
 cpupower_install:
-	$(QUIET_SUBDIR0)power/$(@:_install=)/ $(QUIET_SUBDIR1) install
+	$(call descend,power/$(@:_install=),install)
 
 firewire_install lguest_install perf_install usb_install virtio_install vm_install:
-	$(QUIET_SUBDIR0)$(@:_install=)/ $(QUIET_SUBDIR1) install
+	$(call descend,$(@:_install=),install)
 
 selftests_install:
-	$(QUIET_SUBDIR0)testing/$(@:_clean=)/ $(QUIET_SUBDIR1) install
+	$(call descend,testing/$(@:_clean=),install)
 
 turbostat_install x86_energy_perf_policy_install:
-	$(QUIET_SUBDIR0)power/x86/$(@:_install=)/ $(QUIET_SUBDIR1) install
+	$(call descend,power/x86/$(@:_install=),install)
 
 install: cpupower_install firewire_install lguest_install perf_install \
 		selftests_install turbostat_install usb_install virtio_install \
 		vm_install x86_energy_perf_policy_install
 
 cpupower_clean:
-	$(QUIET_SUBDIR0)power/cpupower/ $(QUIET_SUBDIR1) clean
+	$(call descend,power/cpupower,clean)
 
 firewire_clean lguest_clean perf_clean usb_clean virtio_clean vm_clean:
-	$(QUIET_SUBDIR0)$(@:_clean=)/ $(QUIET_SUBDIR1) clean
+	$(call descend,$(@:_clean=),clean)
 
 selftests_clean:
-	$(QUIET_SUBDIR0)testing/$(@:_clean=)/ $(QUIET_SUBDIR1) clean
+	$(call descend,testing/$(@:_clean=),clean)
 
 turbostat_clean x86_energy_perf_policy_clean:
-	$(QUIET_SUBDIR0)power/x86/$(@:_clean=)/ $(QUIET_SUBDIR1) clean
+	$(call descend,power/x86/$(@:_clean=),clean)
 
 clean: cpupower_clean firewire_clean lguest_clean perf_clean selftests_clean \
 		turbostat_clean usb_clean virtio_clean vm_clean \
diff --git a/tools/scripts/Makefile.include b/tools/scripts/Makefile.include
index 96ce80a3743ba..4a9e3176f7437 100644
--- a/tools/scripts/Makefile.include
+++ b/tools/scripts/Makefile.include
@@ -41,6 +41,14 @@ else
 NO_SUBDIR = :
 endif
 
+#
+# Define a callable command for descending to a new directory
+#
+# Call by doing: $(call descend,directory[,target])
+#
+descend = \
+	$(QUIET_SUBDIR0)$(1) $(QUIET_SUBDIR1) $(2)
+
 QUIET_SUBDIR0  = +$(MAKE) -C # space to separate -C and subdir
 QUIET_SUBDIR1  =
 

From bf35182ffcd00d8b36d56210ffdac110e5624d7d Mon Sep 17 00:00:00 2001
From: David Howells <dhowells@redhat.com>
Date: Mon, 5 Nov 2012 21:02:08 +0000
Subject: [PATCH 3/6] tools: Honour the O= flag when tool build called from a
 higher Makefile

Honour the O= flag that was passed to a higher level Makefile and then passed
down as part of a tool build.

To make this work, the top-level Makefile passes the original O= flag and
subdir=tools to the tools/Makefile, and that in turn passes
subdir=$(O)/$(subdir)/foodir when building tool foo in directory
$(O)/$(subdir)/foodir (where the intervening slashes aren't added if an
element is missing).

For example, take perf.  This is found in tools/perf/.  Assume we're building
into directory ~/zebra/, so we pass O=~/zebra to make.  Dependening on where
we run the build from, we see:

	make run in dir		$(OUTPUT) dir
	=======================	==================
	linux			~/zebra/tools/perf/
	linux/tools		~/zebra/perf/
	linux/tools/perf	~/zebra/

and if O= is not set, we get:

	make run in dir		$(OUTPUT) dir
	=======================	==================
	linux			linux/tools/perf/
	linux/tools		linux/tools/perf/
	linux/tools/perf	linux/tools/perf/

The output directories are created by the descend function if they don't
already exist.

Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Borislav Petkov <bp@amd64.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1378.1352379110@warthog.procyon.org.uk
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 Makefile                       |  6 ++++--
 tools/scripts/Makefile.include | 17 +++++++++++++----
 2 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/Makefile b/Makefile
index 42d0e56818ea8..71dc31e414079 100644
--- a/Makefile
+++ b/Makefile
@@ -1321,10 +1321,12 @@ kernelversion:
 
 # Clear a bunch of variables before executing the submake
 tools/: FORCE
-	$(Q)$(MAKE) LDFLAGS= MAKEFLAGS= -C $(src)/tools/
+	$(Q)mkdir -p $(objtree)/tools
+	$(Q)$(MAKE) LDFLAGS= MAKEFLAGS= O=$(objtree) subdir=tools -C $(src)/tools/
 
 tools/%: FORCE
-	$(Q)$(MAKE) LDFLAGS= MAKEFLAGS= -C $(src)/tools/ $*
+	$(Q)mkdir -p $(objtree)/tools
+	$(Q)$(MAKE) LDFLAGS= MAKEFLAGS= O=$(objtree) subdir=tools -C $(src)/tools/ $*
 
 # Single targets
 # ---------------------------------------------------------------------------
diff --git a/tools/scripts/Makefile.include b/tools/scripts/Makefile.include
index 4a9e3176f7437..87467b17e05c3 100644
--- a/tools/scripts/Makefile.include
+++ b/tools/scripts/Makefile.include
@@ -1,8 +1,11 @@
-ifeq ("$(origin O)", "command line")
+ifeq ($(origin O), command line)
 	dummy := $(if $(shell test -d $(O) || echo $(O)),$(error O=$(O) does not exist),)
 	ABSOLUTE_O := $(shell cd $(O) ; pwd)
-	OUTPUT := $(ABSOLUTE_O)/
+	OUTPUT := $(ABSOLUTE_O)/$(if $(subdir),$(subdir)/)
 	COMMAND_O := O=$(ABSOLUTE_O)
+ifeq ($(objtree),)
+	objtree := $(O)
+endif
 endif
 
 ifneq ($(OUTPUT),)
@@ -47,9 +50,10 @@ endif
 # Call by doing: $(call descend,directory[,target])
 #
 descend = \
-	$(QUIET_SUBDIR0)$(1) $(QUIET_SUBDIR1) $(2)
+	+mkdir -p $(OUTPUT)$(1) && \
+	$(MAKE) $(COMMAND_O) subdir=$(if $(subdir),$(subdir)/$(1),$(1)) $(PRINT_DIR) -C $(1)
 
-QUIET_SUBDIR0  = +$(MAKE) -C # space to separate -C and subdir
+QUIET_SUBDIR0  = +$(MAKE) $(COMMAND_O) -C # space to separate -C and subdir
 QUIET_SUBDIR1  =
 
 ifneq ($(findstring $(MAKEFLAGS),s),s)
@@ -64,5 +68,10 @@ ifndef V
 			 $(MAKE) $(PRINT_DIR) -C $$subdir
 	QUIET_FLEX     = @echo '   ' FLEX $@;
 	QUIET_BISON    = @echo '   ' BISON $@;
+
+	descend = \
+		@echo '   ' DESCEND $(1); \
+		mkdir -p $(OUTPUT)$(1) && \
+		$(MAKE) $(COMMAND_O) subdir=$(if $(subdir),$(subdir)/$(1),$(1)) $(PRINT_DIR) -C $(1)
 endif
 endif

From 2b73f65d114b44b9bc9bd7d229f603e4cd5c1a88 Mon Sep 17 00:00:00 2001
From: David Howells <dhowells@redhat.com>
Date: Tue, 13 Nov 2012 14:14:38 -0300
Subject: [PATCH 4/6] tools: Pass the target in descend
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

 Fixing:

  [acme@sandy linux]$ cd tools
  [acme@sandy tools]$ make clean
      DESCEND power/cpupower
    CC       lib/cpufreq.o
    CC       lib/sysfs.o
    LD       libcpupower.so.0.0.0
    CC       utils/helpers/amd.o
  utils/helpers/amd.c:7:21: error: pci/pci.h: No such file or directory
  In file included from utils/helpers/amd.c:9:
  ./utils/helpers/helpers.h:137: warning: ‘struct pci_access’ declared inside parameter list
  ./utils/helpers/helpers.h:137: warning: its scope is only this definition or declaration, which is probably not what you want
  ./utils/helpers/helpers.h:139: warning: ‘struct pci_access’ declared inside parameter list
  utils/helpers/amd.c: In function ‘amd_pci_get_num_boost_states’:
  utils/helpers/amd.c:120: warning: passing argument 1 of ‘pci_slot_func_init’ from incompatible pointer type
  ./utils/helpers/helpers.h:138: note: expected ‘struct pci_access **’ but argument is of type ‘struct pci_access **’
  utils/helpers/amd.c:125: warning: implicit declaration of function ‘pci_read_byte’
  utils/helpers/amd.c:132: warning: implicit declaration of function ‘pci_cleanup’
  make[1]: *** [utils/helpers/amd.o] Error 1
  make: *** [cpupower_clean] Error 2
  [acme@sandy tools]$

Reported-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Borislav Petkov <bp@amd64.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/n/tip-tviyimq6x6nm77sj5lt4t19f@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/scripts/Makefile.include | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/scripts/Makefile.include b/tools/scripts/Makefile.include
index 87467b17e05c3..2964b96aa55fd 100644
--- a/tools/scripts/Makefile.include
+++ b/tools/scripts/Makefile.include
@@ -51,7 +51,7 @@ endif
 #
 descend = \
 	+mkdir -p $(OUTPUT)$(1) && \
-	$(MAKE) $(COMMAND_O) subdir=$(if $(subdir),$(subdir)/$(1),$(1)) $(PRINT_DIR) -C $(1)
+	$(MAKE) $(COMMAND_O) subdir=$(if $(subdir),$(subdir)/$(1),$(1)) $(PRINT_DIR) -C $(1) $(2)
 
 QUIET_SUBDIR0  = +$(MAKE) $(COMMAND_O) -C # space to separate -C and subdir
 QUIET_SUBDIR1  =
@@ -72,6 +72,6 @@ ifndef V
 	descend = \
 		@echo '   ' DESCEND $(1); \
 		mkdir -p $(OUTPUT)$(1) && \
-		$(MAKE) $(COMMAND_O) subdir=$(if $(subdir),$(subdir)/$(1),$(1)) $(PRINT_DIR) -C $(1)
+		$(MAKE) $(COMMAND_O) subdir=$(if $(subdir),$(subdir)/$(1),$(1)) $(PRINT_DIR) -C $(1) $(2)
 endif
 endif

From f2d9cae9ea9e0228f6eb4d4c5ab4f548d0270d1a Mon Sep 17 00:00:00 2001
From: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Date: Wed, 31 Oct 2012 11:21:28 -0700
Subject: [PATCH 5/6] perf powerpc: Use uapi/unistd.h to fix build error

Use the 'unistd.h' from arch/powerpc/include/uapi to build the perf tool.

Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Acked-by: David Howells <dhowells@redhat.com>
Cc: Anton Blanchard <anton@au1.ibm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Robert Richter <robert.richter@amd.com>
Cc: linuxppc-dev@ozlabs.org
Link: http://lkml.kernel.org/r/20121107191818.GA16211@us.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/perf.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index c50985eaec41f..e2ba8f004d328 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -26,7 +26,7 @@ void get_term_dimensions(struct winsize *ws);
 #endif
 
 #ifdef __powerpc__
-#include "../../arch/powerpc/include/asm/unistd.h"
+#include "../../arch/powerpc/include/uapi/asm/unistd.h"
 #define rmb()		asm volatile ("sync" ::: "memory")
 #define cpu_relax()	asm volatile ("" ::: "memory");
 #define CPUINFO_PROC	"cpu"

From d2709c7ce4c513ab7f4ca9a106a930621811f2d3 Mon Sep 17 00:00:00 2001
From: David Howells <dhowells@redhat.com>
Date: Mon, 19 Nov 2012 22:21:03 +0000
Subject: [PATCH 6/6] perf: Make perf build for x86 with UAPI disintegration
 applied

Make perf build for x86 once the UAPI disintegration patches for that arch
have been applied by adding the appropriate -I flags - in the right order -
and then converting some #includes that use ../.. notation to find main kernel
headerfiles to use <asm/foo.h> and <linux/foo.h> instead.

Note that -Iarch/foo/include/uapi is present _before_ -Iarch/foo/include.
This makes sure we get the userspace version of the pt_regs struct.  Ideally,
we wouldn't have the latter -I flag at all, but unfortunately we want
asm/svm.h and asm/vmx.h in builtin-kvm.c and these aren't part of the UAPI -
at least not for x86.  I wonder if the bits outside of the __KERNEL__ guards
*should* be transferred there.

I note also that perf seems to do its dependency handling manually by listing
all the header files it might want to use in LIB_H in the Makefile.  Can this
be changed to use -MD?

Note that to do make this work, we need to export and UAPI disintegrate
linux/hw_breakpoint.h, which I think should've been exported previously so that
perf can access the bits.  We have to do this in the same patch to maintain
bisectability.

Signed-off-by: David Howells <dhowells@redhat.com>
---
 include/linux/hw_breakpoint.h           | 31 +------------------------
 include/uapi/linux/Kbuild               |  1 +
 include/uapi/linux/hw_breakpoint.h      | 30 ++++++++++++++++++++++++
 tools/perf/Makefile                     | 29 ++++++++++++++++++++++-
 tools/perf/arch/x86/include/perf_regs.h |  2 +-
 tools/perf/builtin-kvm.c                |  6 ++---
 tools/perf/builtin-test.c               |  2 +-
 tools/perf/perf.h                       | 16 +++----------
 tools/perf/util/evsel.c                 |  4 ++--
 tools/perf/util/evsel.h                 |  3 ++-
 tools/perf/util/header.h                |  2 +-
 tools/perf/util/parse-events-test.c     |  2 +-
 tools/perf/util/parse-events.c          |  2 +-
 tools/perf/util/parse-events.h          |  2 +-
 tools/perf/util/pmu.h                   |  2 +-
 tools/perf/util/session.h               |  2 +-
 16 files changed, 78 insertions(+), 58 deletions(-)
 create mode 100644 include/uapi/linux/hw_breakpoint.h

diff --git a/include/linux/hw_breakpoint.h b/include/linux/hw_breakpoint.h
index 6ae9c631a1be5..0464c85e63fd0 100644
--- a/include/linux/hw_breakpoint.h
+++ b/include/linux/hw_breakpoint.h
@@ -1,35 +1,8 @@
 #ifndef _LINUX_HW_BREAKPOINT_H
 #define _LINUX_HW_BREAKPOINT_H
 
-enum {
-	HW_BREAKPOINT_LEN_1 = 1,
-	HW_BREAKPOINT_LEN_2 = 2,
-	HW_BREAKPOINT_LEN_4 = 4,
-	HW_BREAKPOINT_LEN_8 = 8,
-};
-
-enum {
-	HW_BREAKPOINT_EMPTY	= 0,
-	HW_BREAKPOINT_R		= 1,
-	HW_BREAKPOINT_W		= 2,
-	HW_BREAKPOINT_RW	= HW_BREAKPOINT_R | HW_BREAKPOINT_W,
-	HW_BREAKPOINT_X		= 4,
-	HW_BREAKPOINT_INVALID   = HW_BREAKPOINT_RW | HW_BREAKPOINT_X,
-};
-
-enum bp_type_idx {
-	TYPE_INST 	= 0,
-#ifdef CONFIG_HAVE_MIXED_BREAKPOINTS_REGS
-	TYPE_DATA	= 0,
-#else
-	TYPE_DATA	= 1,
-#endif
-	TYPE_MAX
-};
-
-#ifdef __KERNEL__
-
 #include <linux/perf_event.h>
+#include <uapi/linux/hw_breakpoint.h>
 
 #ifdef CONFIG_HAVE_HW_BREAKPOINT
 
@@ -151,6 +124,4 @@ static inline struct arch_hw_breakpoint *counter_arch_bp(struct perf_event *bp)
 }
 
 #endif /* CONFIG_HAVE_HW_BREAKPOINT */
-#endif /* __KERNEL__ */
-
 #endif /* _LINUX_HW_BREAKPOINT_H */
diff --git a/include/uapi/linux/Kbuild b/include/uapi/linux/Kbuild
index e194387ef7845..19e765fbfef71 100644
--- a/include/uapi/linux/Kbuild
+++ b/include/uapi/linux/Kbuild
@@ -415,3 +415,4 @@ header-y += wireless.h
 header-y += x25.h
 header-y += xattr.h
 header-y += xfrm.h
+header-y += hw_breakpoint.h
diff --git a/include/uapi/linux/hw_breakpoint.h b/include/uapi/linux/hw_breakpoint.h
new file mode 100644
index 0000000000000..b04000a2296a1
--- /dev/null
+++ b/include/uapi/linux/hw_breakpoint.h
@@ -0,0 +1,30 @@
+#ifndef _UAPI_LINUX_HW_BREAKPOINT_H
+#define _UAPI_LINUX_HW_BREAKPOINT_H
+
+enum {
+	HW_BREAKPOINT_LEN_1 = 1,
+	HW_BREAKPOINT_LEN_2 = 2,
+	HW_BREAKPOINT_LEN_4 = 4,
+	HW_BREAKPOINT_LEN_8 = 8,
+};
+
+enum {
+	HW_BREAKPOINT_EMPTY	= 0,
+	HW_BREAKPOINT_R		= 1,
+	HW_BREAKPOINT_W		= 2,
+	HW_BREAKPOINT_RW	= HW_BREAKPOINT_R | HW_BREAKPOINT_W,
+	HW_BREAKPOINT_X		= 4,
+	HW_BREAKPOINT_INVALID   = HW_BREAKPOINT_RW | HW_BREAKPOINT_X,
+};
+
+enum bp_type_idx {
+	TYPE_INST 	= 0,
+#ifdef CONFIG_HAVE_MIXED_BREAKPOINTS_REGS
+	TYPE_DATA	= 0,
+#else
+	TYPE_DATA	= 1,
+#endif
+	TYPE_MAX
+};
+
+#endif /* _UAPI_LINUX_HW_BREAKPOINT_H */
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 00deed4d61598..0a619af5be437 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -169,7 +169,34 @@ endif
 
 ### --- END CONFIGURATION SECTION ---
 
-BASIC_CFLAGS = -Iutil/include -Iarch/$(ARCH)/include -I$(OUTPUT)util -I$(TRACE_EVENT_DIR) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE
+ifeq ($(srctree),)
+srctree := $(patsubst %/,%,$(dir $(shell pwd)))
+srctree := $(patsubst %/,%,$(dir $(srctree)))
+#$(info Determined 'srctree' to be $(srctree))
+endif
+
+ifneq ($(objtree),)
+#$(info Determined 'objtree' to be $(objtree))
+endif
+
+ifneq ($(OUTPUT),)
+#$(info Determined 'OUTPUT' to be $(OUTPUT))
+endif
+
+BASIC_CFLAGS = \
+	-Iutil/include \
+	-Iarch/$(ARCH)/include \
+	$(if $(objtree),-I$(objtree)/arch/$(ARCH)/include/generated/uapi) \
+	-I$(srctree)/arch/$(ARCH)/include/uapi \
+	-I$(srctree)/arch/$(ARCH)/include \
+	$(if $(objtree),-I$(objtree)/include/generated/uapi) \
+	-I$(srctree)/include/uapi \
+	-I$(srctree)/include \
+	-I$(OUTPUT)util \
+	-Iutil \
+	-I. \
+	-I$(TRACE_EVENT_DIR) \
+	-D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE
 BASIC_LDFLAGS =
 
 # Guard against environment variables
diff --git a/tools/perf/arch/x86/include/perf_regs.h b/tools/perf/arch/x86/include/perf_regs.h
index 46fc9f15c6b37..7fcdcdbee917a 100644
--- a/tools/perf/arch/x86/include/perf_regs.h
+++ b/tools/perf/arch/x86/include/perf_regs.h
@@ -3,7 +3,7 @@
 
 #include <stdlib.h>
 #include "../../util/types.h"
-#include "../../../../../arch/x86/include/asm/perf_regs.h"
+#include <asm/perf_regs.h>
 
 #ifndef ARCH_X86_64
 #define PERF_REGS_MASK ((1ULL << PERF_REG_X86_32_MAX) - 1)
diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index 260abc535b5b4..e013bdb5e24ab 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -22,9 +22,9 @@
 #include <pthread.h>
 #include <math.h>
 
-#include "../../arch/x86/include/asm/svm.h"
-#include "../../arch/x86/include/asm/vmx.h"
-#include "../../arch/x86/include/asm/kvm.h"
+#include <asm/svm.h>
+#include <asm/vmx.h>
+#include <asm/kvm.h>
 
 struct event_key {
 	#define INVALID_KEY     (~0ULL)
diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c
index 484f26cc0c00c..5acd6e8e658bf 100644
--- a/tools/perf/builtin-test.c
+++ b/tools/perf/builtin-test.c
@@ -15,7 +15,7 @@
 #include "util/thread_map.h"
 #include "util/pmu.h"
 #include "event-parse.h"
-#include "../../include/linux/hw_breakpoint.h"
+#include <linux/hw_breakpoint.h>
 
 #include <sys/mman.h>
 
diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index e2ba8f004d328..238f923f22181 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -5,8 +5,9 @@ struct winsize;
 
 void get_term_dimensions(struct winsize *ws);
 
+#include <asm/unistd.h>
+
 #if defined(__i386__)
-#include "../../arch/x86/include/asm/unistd.h"
 #define rmb()		asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
 #define cpu_relax()	asm volatile("rep; nop" ::: "memory");
 #define CPUINFO_PROC	"model name"
@@ -16,7 +17,6 @@ void get_term_dimensions(struct winsize *ws);
 #endif
 
 #if defined(__x86_64__)
-#include "../../arch/x86/include/asm/unistd.h"
 #define rmb()		asm volatile("lfence" ::: "memory")
 #define cpu_relax()	asm volatile("rep; nop" ::: "memory");
 #define CPUINFO_PROC	"model name"
@@ -26,20 +26,17 @@ void get_term_dimensions(struct winsize *ws);
 #endif
 
 #ifdef __powerpc__
-#include "../../arch/powerpc/include/uapi/asm/unistd.h"
 #define rmb()		asm volatile ("sync" ::: "memory")
 #define cpu_relax()	asm volatile ("" ::: "memory");
 #define CPUINFO_PROC	"cpu"
 #endif
 
 #ifdef __s390__
-#include "../../arch/s390/include/asm/unistd.h"
 #define rmb()		asm volatile("bcr 15,0" ::: "memory")
 #define cpu_relax()	asm volatile("" ::: "memory");
 #endif
 
 #ifdef __sh__
-#include "../../arch/sh/include/asm/unistd.h"
 #if defined(__SH4A__) || defined(__SH5__)
 # define rmb()		asm volatile("synco" ::: "memory")
 #else
@@ -50,35 +47,30 @@ void get_term_dimensions(struct winsize *ws);
 #endif
 
 #ifdef __hppa__
-#include "../../arch/parisc/include/asm/unistd.h"
 #define rmb()		asm volatile("" ::: "memory")
 #define cpu_relax()	asm volatile("" ::: "memory");
 #define CPUINFO_PROC	"cpu"
 #endif
 
 #ifdef __sparc__
-#include "../../arch/sparc/include/uapi/asm/unistd.h"
 #define rmb()		asm volatile("":::"memory")
 #define cpu_relax()	asm volatile("":::"memory")
 #define CPUINFO_PROC	"cpu"
 #endif
 
 #ifdef __alpha__
-#include "../../arch/alpha/include/asm/unistd.h"
 #define rmb()		asm volatile("mb" ::: "memory")
 #define cpu_relax()	asm volatile("" ::: "memory")
 #define CPUINFO_PROC	"cpu model"
 #endif
 
 #ifdef __ia64__
-#include "../../arch/ia64/include/asm/unistd.h"
 #define rmb()		asm volatile ("mf" ::: "memory")
 #define cpu_relax()	asm volatile ("hint @pause" ::: "memory")
 #define CPUINFO_PROC	"model name"
 #endif
 
 #ifdef __arm__
-#include "../../arch/arm/include/asm/unistd.h"
 /*
  * Use the __kuser_memory_barrier helper in the CPU helper page. See
  * arch/arm/kernel/entry-armv.S in the kernel source for details.
@@ -89,13 +81,11 @@ void get_term_dimensions(struct winsize *ws);
 #endif
 
 #ifdef __aarch64__
-#include "../../arch/arm64/include/asm/unistd.h"
 #define rmb()		asm volatile("dmb ld" ::: "memory")
 #define cpu_relax()	asm volatile("yield" ::: "memory")
 #endif
 
 #ifdef __mips__
-#include "../../arch/mips/include/asm/unistd.h"
 #define rmb()		asm volatile(					\
 				".set	mips2\n\t"			\
 				"sync\n\t"				\
@@ -112,7 +102,7 @@ void get_term_dimensions(struct winsize *ws);
 #include <sys/types.h>
 #include <sys/syscall.h>
 
-#include "../../include/uapi/linux/perf_event.h"
+#include <linux/perf_event.h>
 #include "util/types.h"
 #include <stdbool.h>
 
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 618d41140abd3..d144d464ce39d 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -18,8 +18,8 @@
 #include "cpumap.h"
 #include "thread_map.h"
 #include "target.h"
-#include "../../../include/linux/hw_breakpoint.h"
-#include "../../../include/uapi/linux/perf_event.h"
+#include <linux/hw_breakpoint.h>
+#include <linux/perf_event.h>
 #include "perf_regs.h"
 
 #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 6f94d6dea00f4..d99b476ef37c7 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -3,7 +3,8 @@
 
 #include <linux/list.h>
 #include <stdbool.h>
-#include "../../../include/uapi/linux/perf_event.h"
+#include <stddef.h>
+#include <linux/perf_event.h>
 #include "types.h"
 #include "xyarray.h"
 #include "cgroup.h"
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index 879d215cdac90..9bc00783f24f4 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -1,7 +1,7 @@
 #ifndef __PERF_HEADER_H
 #define __PERF_HEADER_H
 
-#include "../../../include/uapi/linux/perf_event.h"
+#include <linux/perf_event.h>
 #include <sys/types.h>
 #include <stdbool.h>
 #include "types.h"
diff --git a/tools/perf/util/parse-events-test.c b/tools/perf/util/parse-events-test.c
index 516ecd9ddd6ee..6ef213b35ecd0 100644
--- a/tools/perf/util/parse-events-test.c
+++ b/tools/perf/util/parse-events-test.c
@@ -3,7 +3,7 @@
 #include "evsel.h"
 #include "evlist.h"
 #include "sysfs.h"
-#include "../../../include/linux/hw_breakpoint.h"
+#include <linux/hw_breakpoint.h>
 
 #define TEST_ASSERT_VAL(text, cond) \
 do { \
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 75c7b0fca6d96..6b6d03e93c3d9 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -1,4 +1,4 @@
-#include "../../../include/linux/hw_breakpoint.h"
+#include <linux/hw_breakpoint.h>
 #include "util.h"
 #include "../perf.h"
 #include "evlist.h"
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index 839230ceb18bd..2820c407adb23 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -7,7 +7,7 @@
 #include <linux/list.h>
 #include <stdbool.h>
 #include "types.h"
-#include "../../../include/uapi/linux/perf_event.h"
+#include <linux/perf_event.h>
 #include "types.h"
 
 struct list_head;
diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h
index 39f3abac77448..fdeb8ac7c5d27 100644
--- a/tools/perf/util/pmu.h
+++ b/tools/perf/util/pmu.h
@@ -2,7 +2,7 @@
 #define __PMU_H
 
 #include <linux/bitops.h>
-#include "../../../include/uapi/linux/perf_event.h"
+#include <linux/perf_event.h>
 
 enum {
 	PERF_PMU_FORMAT_VALUE_CONFIG,
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index dd6426163ba6d..0eae00ad5fe7a 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -7,7 +7,7 @@
 #include "symbol.h"
 #include "thread.h"
 #include <linux/rbtree.h>
-#include "../../../include/uapi/linux/perf_event.h"
+#include <linux/perf_event.h>
 
 struct sample_queue;
 struct ip_callchain;