linux/arch/ia64
Christoph Lameter b718f91c14 [IA64] ITC: Reduce rating for ITC clock if ITCs are drifty
Make sure to reduce the rating of the ITC clock if ITCs are drifty. If they
are drifting then we have not synchronized the ITC values, nor are we doing
the jitter compensation (useless since drift may increase the differentials
arbitrarily).

Without this patch it is possible that the ITC clock becomes selected as
the system clock on systems with drifty ITCs which will result in
nanosleep hanging.

One can still select the itc clock manually on such systems via

clocksource=itc

(Produces nice hangs on SGI Altix.)

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-08-01 14:02:36 -07:00
..
configs Pull ia64-clocksource into release branch 2007-07-20 11:26:47 -07:00
dig [PATCH] tty: Remove include of screen_info.h from tty.h 2006-07-10 13:24:16 -07:00
hp Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6 2007-07-29 17:22:03 -07:00
ia32 [IA64] Remove a few duplicate includes 2007-07-30 16:28:59 -07:00
kernel [IA64] ITC: Reduce rating for ITC clock if ITCs are drifty 2007-08-01 14:02:36 -07:00
lib missing exports of csum_... 2007-07-17 11:01:07 -07:00
mm mm: fault feedback #2 2007-07-19 10:04:41 -07:00
oprofile Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
pci [IA64] Nail two more simple section mismatch errors 2007-07-25 13:08:41 -07:00
scripts Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sn [IA64] SN2: Fix up sn2_rtc clock 2007-08-01 13:15:14 -07:00
defconfig Pull ia64-clocksource into release branch 2007-07-20 11:26:47 -07:00
install.sh Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Kconfig [IA64] Fix build failure in fs/quota.c 2007-07-27 15:40:13 -07:00
Kconfig.debug [PATCH] Move Kprobes and Oprofile to "Instrumentation Support" menu 2005-11-07 07:53:35 -08:00
Makefile [IA64] add vmlinuz target 2006-06-21 14:31:07 -07:00
module.lds Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00