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path: root/drivers/char/uv_mmtimer.c
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2010-01-27x86, UV: Fix RTC latency bug by reading replicated cachelinesDimitri Sivanich1-7/+11
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>
2009-09-24drivers/char/uv_mmtimer.c: add memory mapped RTC driver for UVDimitri Sivanich1-0/+216
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>