From: Bruce Cran <bruce@cran.org.uk>
Date: Mon, 20 Feb 2012 17:07:32 +0000 (+0000)
Subject: Add FIO_PREFERRED_CLOCK_SOURCE to allow selection of clock source on a per-platform... 
X-Git-Tag: fio-2.0.4~17
X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=16de1bf91ca80e62ce257a24cae471fab140bbe0

Add FIO_PREFERRED_CLOCK_SOURCE to allow selection of clock source on a per-platform basis.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/gettime.c b/gettime.c
index cf0d6640..e8f5ab55 100644
--- a/gettime.c
+++ b/gettime.c
@@ -24,7 +24,7 @@ int fio_gtod_offload = 0;
 int fio_gtod_cpu = -1;
 static pthread_t gtod_thread;
 
-enum fio_cs fio_clock_source = CS_GTOD;
+enum fio_cs fio_clock_source = FIO_PREFERRED_CLOCK_SOURCE;
 
 #ifdef FIO_DEBUG_TIME
 
diff --git a/os/os.h b/os/os.h
index cbb476fe..c10cb127 100644
--- a/os/os.h
+++ b/os/os.h
@@ -129,6 +129,10 @@ typedef unsigned long os_cpu_mask_t;
 #define FIO_OS_PATH_SEPARATOR	"/"
 #endif
 
+#ifndef FIO_PREFERRED_CLOCK_SOURCE
+#define FIO_PREFERRED_CLOCK_SOURCE	CS_CGETTIME
+#endif
+
 #ifndef FIO_MAX_JOBS
 #define FIO_MAX_JOBS		2048
 #endif