X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=ltt%2Fbranches%2Fpoly%2Flttv%2Flttv%2Fstate.h;h=c3bdf1385624b3235027f97c2b4f69cbf999e408;hb=67f729732d629426de5a04965a81f6f0848af053;hp=79b1f2f0393abde35fc38a1a3ce5b8f4668c6e04;hpb=1a9bb5b818e843c35c6dd222342f0af30668b3cb;p=lttv.git

diff --git a/ltt/branches/poly/lttv/lttv/state.h b/ltt/branches/poly/lttv/lttv/state.h
index 79b1f2f0..c3bdf138 100644
--- a/ltt/branches/poly/lttv/lttv/state.h
+++ b/ltt/branches/poly/lttv/lttv/state.h
@@ -411,6 +411,11 @@ static inline guint lttv_state_get_target_pid(LttvTracefileState *tfs)
 #define HDR_QUARKS 9
 #define HDR_QUARK 10
 
-#define MKDEV(ma,mi)    ((ma)<<8 | (mi))
+/* Device number manipulation macros from kernel source */
+#define MINORBITS	20
+#define MINORMASK	((1U << MINORBITS) - 1)
+#define MAJOR(dev)	((unsigned int) ((dev) >> MINORBITS))
+#define MINOR(dev)	((unsigned int) ((dev) & MINORMASK))
+#define MKDEV(ma,mi)	(((ma) << MINORBITS) | (mi))
 
 #endif // STATE_H