[dpdk-dev] [PATCH] examples/performance-thread: fix compilation on FreeBSD 10.0

[Bruce Richardson <bruce.richardson@intel.com>]

While later releases in the FreeBSD 10 series have a CPU_COUNT macro
defined, FreeBSD 10.0 and 10.1 do not have this macro. Therefore we provide
a basic fallback implementation of the macro for platforms where it is not
defined.

Fixes: 433ba6228f9a ("examples/performance-thread: add pthread_shim app")

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
---
 examples/performance-thread/pthread_shim/pthread_shim.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/examples/performance-thread/pthread_shim/pthread_shim.c b/examples/performance-thread/pthread_shim/pthread_shim.c
index 7167311..113bafa 100644
--- a/examples/performance-thread/pthread_shim/pthread_shim.c
+++ b/examples/performance-thread/pthread_shim/pthread_shim.c
@@ -48,6 +48,21 @@
 
 #define POSIX_ERRNO(x)  (x)
 
+/* some releases of FreeBSD 10, e.g. 10.0, don't have CPU_COUNT macro */
+#ifndef CPU_COUNT
+#define CPU_COUNT(x) __cpu_count(x)
+
+static inline unsigned int
+__cpu_count(const rte_cpuset_t *cpuset)
+{
+	unsigned int i, count = 0;
+	for (i = 0; i < RTE_MAX_LCORE; i++)
+		if (CPU_ISSET(i, cpuset))
+			count++;
+	return count;
+}
+#endif
+
 /*
  * this flag determines at run time if we override pthread
  * calls and map then to equivalent lthread calls
-- 
2.9.3