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authorJosh Triplett <josh@joshtriplett.org>2013-08-20 17:20:12 -0700
committerLen Brown <len.brown@intel.com>2014-01-18 22:34:07 -0500
commitb731f3119de57144e16c19fd593b8daeb637843e (patch)
tree44c5b906f35b80d081818e85ab4e824dcff65073 /tools
parent7e22e91102c6b9df7c4ae2168910e19d2bb14cd6 (diff)
turbostat: Don't put unprocessed uapi headers in the include path
turbostat's Makefile puts arch/x86/include/uapi/ in the include path, so that it can include <asm/msr.h> from it. It isn't in general safe to include even uapi headers directly from the kernel tree without processing them through scripts/headers_install.sh, but asm/msr.h happens to work. However, that include path can break with some versions of system headers, by overriding some system headers with the unprocessed versions directly from the kernel source. For instance: In file included from /build/x86-generic/usr/include/bits/sigcontext.h:28:0, from /build/x86-generic/usr/include/signal.h:339, from /build/x86-generic/usr/include/sys/wait.h:31, from turbostat.c:27: ../../../../arch/x86/include/uapi/asm/sigcontext.h:4:28: fatal error: linux/compiler.h: No such file or directory This occurs because the system bits/sigcontext.h on that build system includes <asm/sigcontext.h>, and asm/sigcontext.h in the kernel source includes <linux/compiler.h>, which scripts/headers_install.sh would have filtered out. Since turbostat really only wants a single header, just include that one header rather than putting an entire directory of kernel headers on the include path. In the process, switch from msr.h to msr-index.h, since turbostat just wants the MSR numbers. Signed-off-by: Josh Triplett <josh@joshtriplett.org> Cc: stable@vger.kernel.org Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/power/x86/turbostat/Makefile2
-rw-r--r--tools/power/x86/turbostat/turbostat.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/tools/power/x86/turbostat/Makefile b/tools/power/x86/turbostat/Makefile
index f09641da40d..d1b3a361e52 100644
--- a/tools/power/x86/turbostat/Makefile
+++ b/tools/power/x86/turbostat/Makefile
@@ -5,7 +5,7 @@ DESTDIR :=
turbostat : turbostat.c
CFLAGS += -Wall
-CFLAGS += -I../../../../arch/x86/include/uapi/
+CFLAGS += -DMSRHEADER='"../../../../arch/x86/include/uapi/asm/msr-index.h"'
%: %.c
@mkdir -p $(BUILD_OUTPUT)
diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index 9d77f13c2d2..93cbef56e87 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -20,7 +20,7 @@
*/
#define _GNU_SOURCE
-#include <asm/msr.h>
+#include MSRHEADER
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>