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Subject[PATCH] time: rename clocksource functions
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Date
Andrew,
This patch, suggested by Roman Zippel, changes clocksource functions to
use clocksource_xyz rather then xyz_clocksource to avoid polluting the
namespace.

This applies ontop of 2.6.17-rc1-mm3

thanks
-john

Signed-off-by: John Stultz <johnstul@us.ibm.com>


Index: mmmerge/include/linux/clocksource.h
===================================================================
--- mmmerge.orig/include/linux/clocksource.h 2006-04-17 15:08:59.000000000 -0700
+++ mmmerge/include/linux/clocksource.h 2006-04-17 15:08:59.000000000 -0700
@@ -118,12 +118,12 @@ static inline u32 clocksource_hz2mult(u3
}

/**
- * read_clocksource: - Access the clocksource's current cycle value
+ * clocksource_read: - Access the clocksource's current cycle value
* @cs: pointer to clocksource being read
*
* Uses the clocksource to return the current cycle_t value
*/
-static inline cycle_t read_clocksource(struct clocksource *cs)
+static inline cycle_t clocksource_read(struct clocksource *cs)
{
return cs->read();
}
@@ -145,7 +145,7 @@ static inline s64 cyc2ns(struct clocksou
}

/**
- * calculate_clocksource_interval - Calculates a clocksource interval struct
+ * clocksource_calculate_interval - Calculates a clocksource interval struct
*
* @c: Pointer to clocksource.
* @length_nsec: Desired interval length in nanoseconds.
@@ -155,7 +155,7 @@ static inline s64 cyc2ns(struct clocksou
*
* Unless you're the timekeeping code, you should not be using this!
*/
-static inline void calculate_clocksource_interval(struct clocksource *c,
+static inline void clocksource_calculate_interval(struct clocksource *c,
unsigned long length_nsec)
{
u64 tmp;
@@ -272,8 +272,8 @@ static inline s64 make_ntp_adj(struct cl


/* used to install a new clocksource */
-int register_clocksource(struct clocksource*);
-void reselect_clocksource(void);
-struct clocksource* get_next_clocksource(void);
+int clocksource_register(struct clocksource*);
+void clocksource_reselect(void);
+struct clocksource* clocksource_get_next(void);

#endif /* _LINUX_CLOCKSOURCE_H */
Index: mmmerge/kernel/time/clocksource.c
===================================================================
--- mmmerge.orig/kernel/time/clocksource.c 2006-04-17 15:08:59.000000000 -0700
+++ mmmerge/kernel/time/clocksource.c 2006-04-17 15:08:59.000000000 -0700
@@ -65,10 +65,10 @@ static int __init clocksource_done_booti
late_initcall(clocksource_done_booting);

/**
- * get_next_clocksource - Returns the selected clocksource
+ * clocksource_get_next - Returns the selected clocksource
*
*/
-struct clocksource *get_next_clocksource(void)
+struct clocksource *clocksource_get_next(void)
{
unsigned long flags;

@@ -142,12 +142,12 @@ static int is_registered_source(struct c
}

/**
- * register_clocksource - Used to install new clocksources
+ * clocksource_register - Used to install new clocksources
* @t: clocksource to be registered
*
* Returns -EBUSY if registration fails, zero otherwise.
*/
-int register_clocksource(struct clocksource *c)
+int clocksource_register(struct clocksource *c)
{
int ret = 0;
unsigned long flags;
@@ -168,16 +168,16 @@ int register_clocksource(struct clocksou
return ret;
}

-EXPORT_SYMBOL(register_clocksource);
+EXPORT_SYMBOL(clocksource_register);

/**
- * reselect_clocksource - Rescan list for next clocksource
+ * clocksource_reselect - Rescan list for next clocksource
*
* A quick helper function to be used if a clocksource changes its
* rating. Forces the clocksource list to be re-scaned for the best
* clocksource.
*/
-void reselect_clocksource(void)
+void clocksource_reselect(void)
{
unsigned long flags;

@@ -186,6 +186,7 @@ void reselect_clocksource(void)
spin_unlock_irqrestore(&clocksource_lock, flags);
}

+EXPORT_SYMBOL(clocksource_reselect);
/**
* sysfs_show_current_clocksources - sysfs interface for current clocksource
* @dev: unused
Index: mmmerge/kernel/time/jiffies.c
===================================================================
--- mmmerge.orig/kernel/time/jiffies.c 2006-04-17 15:08:59.000000000 -0700
+++ mmmerge/kernel/time/jiffies.c 2006-04-17 15:08:59.000000000 -0700
@@ -67,7 +67,7 @@ struct clocksource clocksource_jiffies =

static int __init init_jiffies_clocksource(void)
{
- return register_clocksource(&clocksource_jiffies);
+ return clocksource_register(&clocksource_jiffies);
}

module_init(init_jiffies_clocksource);
Index: mmmerge/arch/i386/kernel/tsc.c
===================================================================
--- mmmerge.orig/arch/i386/kernel/tsc.c 2006-04-17 15:08:59.000000000 -0700
+++ mmmerge/arch/i386/kernel/tsc.c 2006-04-17 15:08:59.000000000 -0700
@@ -351,7 +351,7 @@ static int tsc_update_callback(void)
/* check to see if we should switch to the safe clocksource: */
if (clocksource_tsc.rating != 50 && check_tsc_unstable()) {
clocksource_tsc.rating = 50;
- reselect_clocksource();
+ clocksource_reselect();
change = 1;
}

@@ -469,7 +469,7 @@ static int __init init_tsc_clocksource(v
jiffies + msecs_to_jiffies(TSC_FREQ_CHECK_INTERVAL);
add_timer(&verfiy_tsc_freq_timer);

- return register_clocksource(&clocksource_tsc);
+ return clocksource_register(&clocksource_tsc);
}

return 0;
Index: mmmerge/arch/i386/kernel/i8253.c
===================================================================
--- mmmerge.orig/arch/i386/kernel/i8253.c 2006-04-17 15:08:59.000000000 -0700
+++ mmmerge/arch/i386/kernel/i8253.c 2006-04-17 15:08:59.000000000 -0700
@@ -80,6 +80,6 @@ static int __init init_pit_clocksource(v
return 0;

clocksource_pit.mult = clocksource_hz2mult(CLOCK_TICK_RATE, 20);
- return register_clocksource(&clocksource_pit);
+ return clocksource_register(&clocksource_pit);
}
module_init(init_pit_clocksource);
Index: mmmerge/drivers/clocksource/acpi_pm.c
===================================================================
--- mmmerge.orig/drivers/clocksource/acpi_pm.c 2006-04-17 15:08:59.000000000 -0700
+++ mmmerge/drivers/clocksource/acpi_pm.c 2006-04-17 15:08:59.000000000 -0700
@@ -171,7 +171,7 @@ static int __init init_acpi_pm_clocksour
return -ENODEV;

pm_good:
- return register_clocksource(&clocksource_acpi_pm);
+ return clocksource_register(&clocksource_acpi_pm);
}

module_init(init_acpi_pm_clocksource);
Index: mmmerge/kernel/timer.c
===================================================================
--- mmmerge.orig/kernel/timer.c 2006-04-17 15:08:59.000000000 -0700
+++ mmmerge/kernel/timer.c 2006-04-17 15:12:37.000000000 -0700
@@ -797,7 +797,7 @@ static inline s64 __get_nsec_offset(void
s64 ns_offset;

/* read clocksource: */
- cycle_now = read_clocksource(clock);
+ cycle_now = clocksource_read(clock);

/* calculate the delta since the last update_wall_time: */
cycle_delta = (cycle_now - last_clock_cycle) & clock->mask;
@@ -832,7 +832,7 @@ static inline void __get_realtime_clock_
}

/**
- * get_realtime_clock_ts - Returns the time of day in a timespec
+ * getnstimeofday - Returns the time of day in a timespec
* @ts: pointer to the timespec to be set
*
* Returns the time of day in a timespec.
@@ -907,9 +907,9 @@ static int change_clocksource(void)
struct clocksource *new;
cycle_t now;
u64 nsec;
- new = get_next_clocksource();
+ new = clocksource_get_next();
if (clock != new) {
- now = read_clocksource(new);
+ now = clocksource_read(new);
nsec = __get_nsec_offset();
timespec_add_ns(&xtime, nsec);

@@ -953,9 +953,9 @@ void __init timekeeping_init(void)
unsigned long flags;

write_seqlock_irqsave(&xtime_lock, flags);
- clock = get_next_clocksource();
- calculate_clocksource_interval(clock, tick_nsec);
- last_clock_cycle = read_clocksource(clock);
+ clock = clocksource_get_next();
+ clocksource_calculate_interval(clock, tick_nsec);
+ last_clock_cycle = clocksource_read(clock);
ntp_clear();
write_sequnlock_irqrestore(&xtime_lock, flags);
}
@@ -975,7 +975,7 @@ static int timekeeping_resume(struct sys

write_seqlock_irqsave(&xtime_lock, flags);
/* restart the last cycle value */
- last_clock_cycle = read_clocksource(clock);
+ last_clock_cycle = clocksource_read(clock);
write_sequnlock_irqrestore(&xtime_lock, flags);
return 0;
}
@@ -1015,7 +1015,7 @@ static void update_wall_time(void)
snsecs_per_sec = (s64)NSEC_PER_SEC << clock->shift;
remainder_snsecs += (s64)xtime.tv_nsec << clock->shift;

- now = read_clocksource(clock);
+ now = clocksource_read(clock);
offset = (now - last_clock_cycle)&clock->mask;

/* normally this loop will run just once, however in the
@@ -1056,7 +1056,7 @@ static void update_wall_time(void)
if (change_clocksource()) {
error = 0;
remainder_snsecs = 0;
- calculate_clocksource_interval(clock, tick_nsec);
+ clocksource_calculate_interval(clock, tick_nsec);
}
}

Index: mmmerge/arch/i386/kernel/hpet.c
===================================================================
--- mmmerge.orig/arch/i386/kernel/hpet.c 2006-04-17 15:08:59.000000000 -0700
+++ mmmerge/arch/i386/kernel/hpet.c 2006-04-17 15:08:59.000000000 -0700
@@ -61,7 +61,7 @@ static int __init init_hpet_clocksource(
do_div(tmp, FSEC_PER_NSEC);
clocksource_hpet.mult = (u32)tmp;

- return register_clocksource(&clocksource_hpet);
+ return clocksource_register(&clocksource_hpet);
}

module_init(init_hpet_clocksource);
Index: mmmerge/drivers/clocksource/cyclone.c
===================================================================
--- mmmerge.orig/drivers/clocksource/cyclone.c 2006-04-17 15:08:59.000000000 -0700
+++ mmmerge/drivers/clocksource/cyclone.c 2006-04-17 15:08:59.000000000 -0700
@@ -113,7 +113,7 @@ static int __init init_cyclone_clocksour
clocksource_cyclone.mult = clocksource_hz2mult(CYCLONE_TIMER_FREQ,
clocksource_cyclone.shift);

- return register_clocksource(&clocksource_cyclone);
+ return clocksource_register(&clocksource_cyclone);
}

module_init(init_cyclone_clocksource);

-
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