[PATCH] gcov: Support for >=gcc-6 missing

[Florian Meier]

Hello!

I've noticed problems ("not executed"/ "file empty") with the gcov
kernel support, when I'm using a gcc version >=6.
For me, it seems like this is no technical reason, gcc 6 just was
forgotten in the #ifdefs :).

The following patch was tested with kernel 4.6.3 and gcc-6.1.1.

I'm not 100% sure, that CGOV_COUNTERS=10 is correct, but the gcov
output seemed reasonable.

--- a/kernel/gcov/gcc_4_7.c 2016-05-16 00:43:13.000000000 +0200
+++ b/kernel/gcov/gcc_4_7.c 13:41:41.726666665 +0200
@@ -18,7 +18,9 @@
 #include <linux/vmalloc.h>
 #include "gcov.h"

-#if __GNUC__ == 5 && __GNUC_MINOR__ >= 1
+#if __GNUC__ == 6
+#define GCOV_COUNTERS 10
+#elif __GNUC__ == 5 && __GNUC_MINOR__ >= 1
 #define GCOV_COUNTERS 10
 #elif __GNUC__ == 4 && __GNUC_MINOR__ >= 9
 #define GCOV_COUNTERS 9

Regards
Florian Meier