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authorRodolfo Giometti <giometti@linux.it>2009-06-17 16:28:37 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-18 13:04:04 -0700
commiteae9d2ba0cfc27a2ad9765f23efb98fb80d80234 (patch)
treef4be40ca528b2f23f97fa9cb6ebe91b8d6696d5b /MAINTAINERS
parent8820f27ad9a5ad2a62cdcdf425d7921c31831800 (diff)
LinuxPPS: core support
This patch adds the kernel side of the PPS support currently named "LinuxPPS". PPS means "pulse per second" and a PPS source is just a device which provides a high precision signal each second so that an application can use it to adjust system clock time. Common use is the combination of the NTPD as userland program with a GPS receiver as PPS source to obtain a wallclock-time with sub-millisecond synchronisation to UTC. To obtain this goal the userland programs shoud use the PPS API specification (RFC 2783 - Pulse-Per-Second API for UNIX-like Operating Systems, Version 1.0) which in part is implemented by this patch. It provides a set of chars devices, one per PPS source, which can be used to get the time signal. The RFC's functions can be implemented by accessing to these char devices. Signed-off-by: Rodolfo Giometti <giometti@linux.it> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Greg KH <greg@kroah.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Michael Kerrisk <mtk.manpages@googlemail.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'MAINTAINERS')
-rw-r--r--MAINTAINERS7
1 files changed, 7 insertions, 0 deletions
diff --git a/MAINTAINERS b/MAINTAINERS
index 5b7a08d88e4f..035df9d26609 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4577,6 +4577,13 @@ S: Maintained
F: drivers/net/pppol2tp.c
F: include/linux/if_pppol2tp.h
+PPS SUPPORT
+P: Rodolfo Giometti
+M: giometti@enneenne.com
+W: http://wiki.enneenne.com/index.php/LinuxPPS_support
+L: linuxpps@ml.enneenne.com (subscribers-only)
+S: Maintained
+
PREEMPTIBLE KERNEL
P: Robert Love
M: rml@tech9.net