diff options
| author | Torben Hohn <torbenh@gmx.de> | 2011-01-27 15:59:00 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2011-01-31 14:55:42 +0100 |
| commit | fbad1ea94159a71bc0f68b00e57ae803606af9fb (patch) | |
| tree | bcd350cc5faa6d3607d2c279d66fa58e96c53425 /kernel/time/jiffies.c | |
| parent | 871cf1e5f2a17702f58539a3af8b18fc8666ad4c (diff) | |
| download | lwn-fbad1ea94159a71bc0f68b00e57ae803606af9fb.tar.gz lwn-fbad1ea94159a71bc0f68b00e57ae803606af9fb.zip | |
time: Move get_jiffies_64 to kernel/time/jiffies.c
Move the jiffies access functions to the jiffies clocksource code.
[ tglx: Add missing include ]
Signed-off-by: Torben Hohn <torbenh@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: johnstul@us.ibm.com
Cc: yong.zhang0@gmail.com
Cc: hch@infradead.org
LKML-Reference: <20110127145900.23248.73352.stgit@localhost>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/time/jiffies.c')
| -rw-r--r-- | kernel/time/jiffies.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/kernel/time/jiffies.c b/kernel/time/jiffies.c index 5404a8456909..2fbc20744797 100644 --- a/kernel/time/jiffies.c +++ b/kernel/time/jiffies.c @@ -22,6 +22,7 @@ ************************************************************************/ #include <linux/clocksource.h> #include <linux/jiffies.h> +#include <linux/module.h> #include <linux/init.h> /* The Jiffies based clocksource is the lowest common @@ -64,6 +65,23 @@ struct clocksource clocksource_jiffies = { .shift = JIFFIES_SHIFT, }; +#if (BITS_PER_LONG < 64) +u64 get_jiffies_64(void) +{ + unsigned long seq; + u64 ret; + + do { + seq = read_seqbegin(&xtime_lock); + ret = jiffies_64; + } while (read_seqretry(&xtime_lock, seq)); + return ret; +} +EXPORT_SYMBOL(get_jiffies_64); +#endif + +EXPORT_SYMBOL(jiffies); + static int __init init_jiffies_clocksource(void) { return clocksource_register(&clocksource_jiffies); |