[PKT_SCHED]: Use get_jiffies_64()

The packet scheduler simulates 64 bit jiffies on 32 bit platforms by running
a timer keeping a mark and and offset.  Since there is no locking and this is
racy and doesn't handle jiffie wrap real well.

We can use get_jiffies_64 on 2.6 do get what is needed.
The downside is the overhead of a function call, and a cache miss in
get_jiffies_64.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@redhat.com>

include/net/pkt_sched.h

@@ -231,20 +231,7 @@ extern psched_time_t	psched_time_base;
 #define PSCHED_JSCALE 10
 #endif
 
-#if BITS_PER_LONG <= 32
-
-#define PSCHED_WATCHER unsigned long
-
-extern PSCHED_WATCHER psched_time_mark;
-
-#define PSCHED_GET_TIME(stamp) ((stamp) = psched_time_base + (((unsigned long)(jiffies-psched_time_mark))<<PSCHED_JSCALE))
-
-#else
-
-#define PSCHED_GET_TIME(stamp) ((stamp) = (jiffies<<PSCHED_JSCALE))
-
-#endif
-
+#define PSCHED_GET_TIME(stamp) ((stamp) = (get_jiffies_64()<<PSCHED_JSCALE))
 #define PSCHED_US2JIFFIE(delay) (((delay)+(1<<PSCHED_JSCALE)-1)>>PSCHED_JSCALE)
 #define PSCHED_JIFFIE2US(delay) ((delay)<<PSCHED_JSCALE)