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2 Commits

Author SHA1 Message Date
Dimitri Sivanich
aca3bb5910 x86, UV: Fix RTC latency bug by reading replicated cachelines 
For SGI UV node controllers (HUB) rev 2.0 or greater, use
replicated cachelines to read the RTC timer.  This optimization
allows faster simulataneous reads from a given socket.

Signed-off-by: Dimitri Sivanich <sivanich@sgi.com>
Cc: Jack Steiner <steiner@sgi.com>
LKML-Reference: <20100122154140.GB4975@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 2010-01-27 11:33:53 +01:00
Dimitri Sivanich
fbd8ae1068 drivers/char/uv_mmtimer.c: add memory mapped RTC driver for UV 
This driver memory maps the UV Hub RTC.

Signed-off-by: Dimitri Sivanich <sivanich@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2009-09-24 07:21:03 -07:00