[tip:perf/core] perf tools: Fix compilation on powerpc

[tip-bot for Paul Mackerras <paulus@samba.org>]

Commit-ID:  ee3d250446f1c1be4eceab48f3a23794d9a6564c
Gitweb:     http://git.kernel.org/tip/ee3d250446f1c1be4eceab48f3a23794d9a6564c
Author:     Paul Mackerras <paulus@samba.org>
AuthorDate: Tue, 24 Nov 2009 15:19:43 +1100
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Tue, 24 Nov 2009 08:35:10 +0100

perf tools: Fix compilation on powerpc

Currently, perf fails to compile on powerpc with this error:

     CC util/header.o
 In file included from util/../perf.h:17,
                  from util/header.c:9:
 util/../../../arch/powerpc/include/asm/unistd.h:360:27: error:
 linux/linkage.h: No such file or directory make: ***
 [util/header.o] Error 1

The reason is that we still have a #define __KERNEL__ in effect
at the point where <asm/unistd.h> gets included, which means we
get extra stuff that we don't need or want.

This fixes the problem by undefining __KERNEL__ once we have
included the file for which we need __KERNEL__ defined.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <19211.24287.453183.78836@cargo.ozlabs.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 tools/perf/util/include/linux/bitops.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/tools/perf/util/include/linux/bitops.h b/tools/perf/util/include/linux/bitops.h
index ace57c3..8d63116 100644
--- a/tools/perf/util/include/linux/bitops.h
+++ b/tools/perf/util/include/linux/bitops.h
@@ -7,6 +7,8 @@
 #define CONFIG_GENERIC_FIND_FIRST_BIT
 #include "../../../../include/linux/bitops.h"
 
+#undef __KERNEL__
+
 static inline void set_bit(int nr, unsigned long *addr)
 {
 	addr[nr / BITS_PER_LONG] |= 1UL << (nr % BITS_PER_LONG);