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authorAdrian Bunk <bunk@stusta.de>2006-09-30 23:28:29 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-01 00:39:27 -0700
commit70bc42f90a3f4721c89dbe865e6c95da8565b41c (patch)
treeb98b1b19584c4dfcec283715a14a701139ea32d1
parent0883d899ef862c1b0f8b2c2d38098470c193a3dd (diff)
[PATCH] kernel/time/ntp.c: possible cleanups
This patch contains the following possible cleanups: - make the following needlessly global function static: - ntp_update_frequency() - make the following needlessly global variables static: - time_state - time_offset - time_constant - time_reftime - remove the following read-only global variable: - time_precision Signed-off-by: Adrian Bunk <bunk@stusta.de> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--include/linux/timex.h6
-rw-r--r--kernel/time/ntp.c40
2 files changed, 20 insertions, 26 deletions
diff --git a/include/linux/timex.h b/include/linux/timex.h
index 261381b5da8..049dfe4a11f 100644
--- a/include/linux/timex.h
+++ b/include/linux/timex.h
@@ -198,21 +198,15 @@ extern int tickadj; /* amount of adjustment per tick */
/*
* phase-lock loop variables
*/
-extern int time_state; /* clock status */
extern int time_status; /* clock synchronization status bits */
-extern long time_offset; /* time adjustment (us) */
-extern long time_constant; /* pll time constant */
-extern long time_precision; /* clock precision (us) */
extern long time_maxerror; /* maximum error */
extern long time_esterror; /* estimated error */
extern long time_freq; /* frequency offset (scaled ppm) */
-extern long time_reftime; /* time at last adjustment (s) */
extern long time_adjust; /* The amount of adjtime left */
extern void ntp_clear(void);
-extern void ntp_update_frequency(void);
/**
* ntp_synced - Returns 1 if the NTP status is not UNSYNC
diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c
index 1ab5e9d7fa5..47195fa0ec4 100644
--- a/kernel/time/ntp.c
+++ b/kernel/time/ntp.c
@@ -30,17 +30,31 @@ static u64 tick_length, tick_length_base;
* phase-lock loop variables
*/
/* TIME_ERROR prevents overwriting the CMOS clock */
-int time_state = TIME_OK; /* clock synchronization status */
+static int time_state = TIME_OK; /* clock synchronization status */
int time_status = STA_UNSYNC; /* clock status bits */
-long time_offset; /* time adjustment (ns) */
-long time_constant = 2; /* pll time constant */
-long time_precision = 1; /* clock precision (us) */
+static long time_offset; /* time adjustment (ns) */
+static long time_constant = 2; /* pll time constant */
long time_maxerror = NTP_PHASE_LIMIT; /* maximum error (us) */
long time_esterror = NTP_PHASE_LIMIT; /* estimated error (us) */
long time_freq; /* frequency offset (scaled ppm)*/
-long time_reftime; /* time at last adjustment (s) */
+static long time_reftime; /* time at last adjustment (s) */
long time_adjust;
+#define CLOCK_TICK_OVERFLOW (LATCH * HZ - CLOCK_TICK_RATE)
+#define CLOCK_TICK_ADJUST (((s64)CLOCK_TICK_OVERFLOW * NSEC_PER_SEC) / \
+ (s64)CLOCK_TICK_RATE)
+
+static void ntp_update_frequency(void)
+{
+ tick_length_base = (u64)(tick_usec * NSEC_PER_USEC * USER_HZ) << TICK_LENGTH_SHIFT;
+ tick_length_base += (s64)CLOCK_TICK_ADJUST << TICK_LENGTH_SHIFT;
+ tick_length_base += (s64)time_freq << (TICK_LENGTH_SHIFT - SHIFT_NSEC);
+
+ do_div(tick_length_base, HZ);
+
+ tick_nsec = tick_length_base >> TICK_LENGTH_SHIFT;
+}
+
/**
* ntp_clear - Clears the NTP state variables
*
@@ -59,20 +73,6 @@ void ntp_clear(void)
time_offset = 0;
}
-#define CLOCK_TICK_OVERFLOW (LATCH * HZ - CLOCK_TICK_RATE)
-#define CLOCK_TICK_ADJUST (((s64)CLOCK_TICK_OVERFLOW * NSEC_PER_SEC) / (s64)CLOCK_TICK_RATE)
-
-void ntp_update_frequency(void)
-{
- tick_length_base = (u64)(tick_usec * NSEC_PER_USEC * USER_HZ) << TICK_LENGTH_SHIFT;
- tick_length_base += (s64)CLOCK_TICK_ADJUST << TICK_LENGTH_SHIFT;
- tick_length_base += (s64)time_freq << (TICK_LENGTH_SHIFT - SHIFT_NSEC);
-
- do_div(tick_length_base, HZ);
-
- tick_nsec = tick_length_base >> TICK_LENGTH_SHIFT;
-}
-
/*
* this routine handles the overflow of the microsecond field
*
@@ -330,7 +330,7 @@ leave: if ((time_status & (STA_UNSYNC|STA_CLOCKERR)) != 0)
txc->esterror = time_esterror;
txc->status = time_status;
txc->constant = time_constant;
- txc->precision = time_precision;
+ txc->precision = 1;
txc->tolerance = MAXFREQ;
txc->tick = tick_usec;