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| author |  Patrick Ohly <patrick.ohly@intel.com>
| 2009-02-12 05:03:35 +0000 |
|---|---|---|
| committer |  David S. Miller <davem@davemloft.net>
| 2009-02-15 22:43:32 -0800 |
| commit | a75244c3d519fcb490ca2bf3f123c98017f1e8d0 (patch) | |
| tree | dee5b6a3589cfaae698a11297667e9e0c8b01ef5 /kernel/time/Makefile | |
| parent | clocksource: allow usage independent of timekeeping.c (diff) | |
| download | linux-a75244c3d519fcb490ca2bf3f123c98017f1e8d0.tar.gz linux-a75244c3d519fcb490ca2bf3f123c98017f1e8d0.tar.bz2 linux-a75244c3d519fcb490ca2bf3f123c98017f1e8d0.zip | |
timecompare: generic infrastructure to map between two time bases
Mapping from a struct timecounter to a time returned by functions like
ktime_get_real() is implemented. This is sufficient to use this code
in a network device driver which wants to support hardware time
stamping and transformation of hardware time stamps to system time.
The interface could have been made more versatile by not depending on
a time counter, but this wasn't done to avoid writing glue code
elsewhere.
The method implemented here is the one used and analyzed under the name
"assisted PTP" in the LCI PTP paper:
http://www.linuxclustersinstitute.org/conferences/archive/2008/PDF/Ohly_92221.pdf
Acked-by: John Stultz <johnstul@us.ibm.com>
Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/time/Makefile')
| -rw-r--r-- | kernel/time/Makefile | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/time/Makefile b/kernel/time/Makefile index 905b0b50792d..0b0a6366c9d4 100644 --- a/kernel/time/Makefile +++ b/kernel/time/Makefile @@ -1,4 +1,4 @@ -obj-y += timekeeping.o ntp.o clocksource.o jiffies.o timer_list.o +obj-y += timekeeping.o ntp.o clocksource.o jiffies.o timer_list.o timecompare.o obj-$(CONFIG_GENERIC_CLOCKEVENTS_BUILD) += clockevents.o obj-$(CONFIG_GENERIC_CLOCKEVENTS) += tick-common.o |