[Beignet] [PATCH] Runtime: Use uanme to get kernel architecture.

[Yang Rong]

In some systems, the user space is 32 bit, but kernel is 64 bit, so
can't use the compiler's flag to determine the kernel'a architecture,
use uname to get it.

It fix bug:
https://bugs.freedesktop.org/show_bug.cgi?id=95245

Signed-off-by: Yang Rong <rong.r.yang at intel.com>
---
 src/intel/intel_gpgpu.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/src/intel/intel_gpgpu.c b/src/intel/intel_gpgpu.c
index 39b7e4d..db967e8 100644
--- a/src/intel/intel_gpgpu.c
+++ b/src/intel/intel_gpgpu.c
@@ -2243,11 +2243,15 @@ intel_gpgpu_read_ts_reg_gen7(drm_intel_bufmgr *bufmgr)
      i386 system. It seems the kernel readq bug. So shift 32 bit in x86_64, and only remain
      32 bits data in i386.
   */
-#ifdef __i386__
-  return result & 0x0ffffffff;
-#else
-  return result >> 32;
-#endif  /* __i386__  */
+  struct utsname buf;
+  uname(&buf);
+  /* In some systems, the user space is 32 bit, but kernel is 64 bit, so can't use the
+   * compiler's flag to determine the kernel'a architecture, use uname to get it. */
+  /* x86_64 in linux, amd64 in bsd */
+  if(strcmp(buf.machine, "x86_64") == 0 || strcmp(buf.machine, "amd64") == 0)
+    return result >> 32;
+  else
+    return result & 0x0ffffffff;
 }
 
 /* baytrail's result should clear high 4 bits */
-- 
2.1.4