compat: Introduce COMPAT_USE_64BIT_TIME

Allow a compatibility ABI to use a 64-bit time_t and 64-bit members in
struct timeval and struct timespec to avoid the Y2038 problem.

This will be used for the x32 ABI.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

diff --git a/include/linux/compat.h b/include/linux/compat.h
index 41c9f65..1be91c0 100644 (file)
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -19,6 +19,10 @@
 #include <asm/siginfo.h>
 #include <asm/signal.h>
 
+#ifndef COMPAT_USE_64BIT_TIME
+#define COMPAT_USE_64BIT_TIME 0
+#endif
+
 #define compat_jiffies_to_clock_t(x)   \
                (((unsigned long)(x) * COMPAT_USER_HZ) / HZ)