regression: disable timer peek-ahead for 2.6.28

[linux-2.6-omap-h63xx.git] / include / linux / timex.h

diff --git a/include/linux/timex.h b/include/linux/timex.h
index 9fbdd12a52f14e8742d50c2ceee2ce6e9b3dccf5..9007313b5b7168ae03ed85e63d80ce6afe0ce438 100644 (file)
--- a/include/linux/timex.h
+++ b/include/linux/timex.h
@@ -81,14 +81,14 @@
  * offset and maximum frequency tolerance.
  */
 #define SHIFT_USEC 16          /* frequency offset scale (shift) */
-#define PPM_SCALE (NSEC_PER_USEC << (TICK_LENGTH_SHIFT - SHIFT_USEC))
-#define PPM_SCALE_INV_SHIFT 20
-#define PPM_SCALE_INV ((1ll << (PPM_SCALE_INV_SHIFT + TICK_LENGTH_SHIFT)) / \
+#define PPM_SCALE (NSEC_PER_USEC << (NTP_SCALE_SHIFT - SHIFT_USEC))
+#define PPM_SCALE_INV_SHIFT 19
+#define PPM_SCALE_INV ((1ll << (PPM_SCALE_INV_SHIFT + NTP_SCALE_SHIFT)) / \
                       PPM_SCALE + 1)
 
 #define MAXPHASE 500000000l    /* max phase error (ns) */
 #define MAXFREQ 500000         /* max frequency error (ns/s) */
-#define MAXFREQ_SCALED ((s64)MAXFREQ << TICK_LENGTH_SHIFT)
+#define MAXFREQ_SCALED ((s64)MAXFREQ << NTP_SCALE_SHIFT)
 #define MINSEC 256             /* min interval between updates (s) */
 #define MAXSEC 2048            /* max interval between updates (s) */
 #define NTP_PHASE_LIMIT ((MAXPHASE / NSEC_PER_USEC) << 5) /* beyond max. dispersion */
@@ -121,9 +121,11 @@ struct timex {
        long errcnt;            /* calibration errors (ro) */
        long stbcnt;            /* stability limit exceeded (ro) */
 
+       int tai;                /* TAI offset (ro) */
+
        int  :32; int  :32; int  :32; int  :32;
        int  :32; int  :32; int  :32; int  :32;
-       int  :32; int  :32; int  :32; int  :32;
+       int  :32; int  :32; int  :32;
 };
 
 /*
@@ -135,11 +137,19 @@ struct timex {
 #define ADJ_ESTERROR           0x0008  /* estimated time error */
 #define ADJ_STATUS             0x0010  /* clock status */
 #define ADJ_TIMECONST          0x0020  /* pll time constant */
+#define ADJ_TAI                        0x0080  /* set TAI offset */
 #define ADJ_MICRO              0x1000  /* select microsecond resolution */
 #define ADJ_NANO               0x2000  /* select nanosecond resolution */
 #define ADJ_TICK               0x4000  /* tick value */
+
+#ifdef __KERNEL__
+#define ADJ_ADJTIME            0x8000  /* switch between adjtime/adjtimex modes */
+#define ADJ_OFFSET_SINGLESHOT  0x0001  /* old-fashioned adjtime */
+#define ADJ_OFFSET_READONLY    0x2000  /* read-only adjtime */
+#else
 #define ADJ_OFFSET_SINGLESHOT  0x8001  /* old-fashioned adjtime */
-#define ADJ_OFFSET_SS_READ     0xa001  /* read-only adjtime */
+#define ADJ_OFFSET_SS_READ     0xa001  /* read-only adjtime */
+#endif
 
 /* xntp 3.4 compatibility names */
 #define MOD_OFFSET     ADJ_OFFSET
@@ -209,6 +219,7 @@ extern long time_esterror;  /* estimated error */
 
 extern long time_adjust;       /* The amount of adjtime left */
 
+extern void ntp_init(void);
 extern void ntp_clear(void);
 
 /**
@@ -227,7 +238,7 @@ static inline int ntp_synced(void)
        __x < 0 ? -(-__x >> __s) : __x >> __s;  \
 })
 
-#define TICK_LENGTH_SHIFT      32
+#define NTP_SCALE_SHIFT                32
 
 #ifdef CONFIG_NO_HZ
 #define NTP_INTERVAL_FREQ  (2)
@@ -236,8 +247,8 @@ static inline int ntp_synced(void)
 #endif
 #define NTP_INTERVAL_LENGTH (NSEC_PER_SEC/NTP_INTERVAL_FREQ)
 
-/* Returns how long ticks are at present, in ns / 2^(SHIFT_SCALE-10). */
-extern u64 current_tick_length(void);
+/* Returns how long ticks are at present, in ns / 2^NTP_SCALE_SHIFT. */
+extern u64 tick_length;
 
 extern void second_overflow(void);
 extern void update_ntp_one_tick(void);