[PATCH 1/2] perf, tools: Define MADV_*HUGEPAGE for old kernels

[Andi Kleen]

From: Andi Kleen <ak@xxxxxxxxxxxxxxx>

Avoids this on RHEL6:

bench/numa.c: In function âalloc_dataâ:
bench/numa.c:334: error: âMADV_HUGEPAGEâ undeclared (first use in this function)
bench/numa.c:334: error: (Each undeclared identifier is reported only once
bench/numa.c:334: error: for each function it appears in.)
bench/numa.c:341: error: âMADV_NOHUGEPAGEâ undeclared (first use in this function)

Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
---
 tools/perf/bench/numa.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/tools/perf/bench/numa.c b/tools/perf/bench/numa.c
index 30d1c32..8f30ce1 100644
--- a/tools/perf/bench/numa.c
+++ b/tools/perf/bench/numa.c
@@ -30,6 +30,9 @@
 #include <numa.h>
 #include <numaif.h>
 
+#define MADV_HUGEPAGE   14              /* Worth backing with hugepages */
+#define MADV_NOHUGEPAGE 15              /* Not worth backing with hugepages */
+
 /*
  * Regular printout to the terminal, supressed if -q is specified:
  */
-- 
1.7.7.6

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