Turbostat: test asm/msr-index.h compatibility

Olds versions of asm/msr-index.h don't contain the required macros.
Test at least if it contains MSR_CORE_C3_RESIDENCY

diff --git a/configure.ac b/configure.ac
index 35ce32ba12bc954ee423ce3eba7612210c4e1a51..2ef82ee13606ddf50b7a3d39516eb8888ec79afe 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -593,6 +593,12 @@ AC_CHECK_HEADERS(termios.h, [have_termios_h="yes"])
 have_asm_msrindex_h="no"
 AC_CHECK_HEADERS(asm/msr-index.h, [have_asm_msrindex_h="yes"])
 
+have_usable_asm_msrindex_h="no"
+if test "x$have_asm_msrindex_h" = "xyes"
+then
+       AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include<asm/msr-index.h>]],[[int y = MSR_CORE_C3_RESIDENCY;]])], [have_usable_asm_msrindex_h="yes"])
+fi
+
 have_cpuid_h="no"
 AC_CHECK_HEADERS(cpuid.h, [have_cpuid_h="yes"])
 
@@ -5193,7 +5199,7 @@ then
        then
                plugin_ipvs="yes"
        fi
-       if test "x$have_asm_msrindex_h" = "xyes" && test "x$have_cpuid_h" = "xyes"
+       if test "x$have_usable_asm_msrindex_h" = "xyes" && test "x$have_cpuid_h" = "xyes"
        then
                plugin_turbostat="yes"
        fi