X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Ftools%2Ftesting%2Fselftests%2Fpowerpc%2Fpmu%2Febb%2Febb.c;fp=kernel%2Ftools%2Ftesting%2Fselftests%2Fpowerpc%2Fpmu%2Febb%2Febb.c;h=9729d9f9021874842e8a18998ba91e3eeae63c74;hb=e09b41010ba33a20a87472ee821fa407a5b8da36;hp=d7a72ce696b54928a8ec0594e576e66bbdbe7e30;hpb=f93b97fd65072de626c074dbe099a1fff05ce060;p=kvmfornfv.git

diff --git a/kernel/tools/testing/selftests/powerpc/pmu/ebb/ebb.c b/kernel/tools/testing/selftests/powerpc/pmu/ebb/ebb.c
index d7a72ce69..9729d9f90 100644
--- a/kernel/tools/testing/selftests/powerpc/pmu/ebb/ebb.c
+++ b/kernel/tools/testing/selftests/powerpc/pmu/ebb/ebb.c
@@ -13,6 +13,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <sys/ioctl.h>
+#include <linux/auxvec.h>
 
 #include "trace.h"
 #include "reg.h"
@@ -319,6 +320,16 @@ void ebb_global_disable(void)
 	mb();
 }
 
+bool ebb_is_supported(void)
+{
+#ifdef PPC_FEATURE2_EBB
+	/* EBB requires at least POWER8 */
+	return ((long)get_auxv_entry(AT_HWCAP2) & PPC_FEATURE2_EBB);
+#else
+	return false;
+#endif
+}
+
 void event_ebb_init(struct event *e)
 {
 	e->attr.config |= (1ull << 63);