perf_counter: Set the CONFIG_PERF_COUNTERS default to y if CONFIG_PROFILING=y

If user has already enabled profiling support in the kernel
(for oprofile, old-style profiling of ftrace) then offer up
perfcounters with a y default in interactive kconfig sessions.

Still keep it off by default otherwise.

Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 1 insertions, 0 deletions

diff --git a/init/Kconfig b/init/Kconfig
index 823ee0a2d2a3..3f7e60995c80 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -940,6 +940,7 @@ menu "Performance Counters"
 
 config PERF_COUNTERS
         bool "Kernel Performance Counters"
+        default y if PROFILING
         depends on HAVE_PERF_COUNTERS
         select ANON_INODES
         help