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linux/arch
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Marcelo Tosatti 07190a08ee [PATCH] Mark TSC on GeodeLX reliable 
The Geode can safely use the TSC for highres, since:

1) Does not support frequency scaling,

2) The TSC _does_ count when the CPU is halted.  Furthermore, the Geode
   supports a mode called "suspension on halt", where Suspend mode (which
   interacts with the power management states) is entered.  TSC counting
   during suspend mode is controlled by bit 8 of the Bus Controller
   Configuration Register #0 (thanks Tom!).

3) no SMP :)

Check if "RTSC counts during suspension" and remove the requirement for
verification, so the clocksource code can safely select it as an timesource
for the highres timers subsystem.

Signed-off-by: Marcelo Tosatti <marcelo@kvack.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
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>
2007-02-16 08:13:58 -08:00
..
alpha [PATCH] Dynamic kernel command-line: alpha 2007-02-12 09:48:37 -08:00
arm [PATCH] clocksource: fixup is_continous changes on ARM 2007-02-16 08:13:57 -08:00
arm26 [PATCH] Dynamic kernel command-line: arm26 2007-02-12 09:48:37 -08:00
avr32 [PATCH] clocksource: fixup is_continous changes on AVR32 2007-02-16 08:13:57 -08:00
cris [PATCH] mark struct file_operations const 2 2007-02-12 09:48:44 -08:00
frv [PATCH] sysctl: remove insert_at_head from register_sysctl 2007-02-14 08:09:59 -08:00
h8300 [PATCH] Dynamic kernel command-line: h8300 2007-02-12 09:48:38 -08:00
i386 [PATCH] Mark TSC on GeodeLX reliable 2007-02-16 08:13:58 -08:00
ia64 ATA convert GSI to irq on ia64 2007-02-15 18:04:53 -05:00
m32r [PATCH] Dynamic kernel command-line: m32r 2007-02-12 09:48:38 -08:00
m68k [PATCH] Scheduled removal of SA_xxx interrupt flags fixups 2007-02-14 08:09:54 -08:00
m68knommu [PATCH] Dynamic kernel command-line: m68knommu 2007-02-12 09:48:38 -08:00
mips [PATCH] clocksource: fixup is_continous changes on MIPS 2007-02-16 08:13:57 -08:00
parisc [PATCH] mark struct file_operations const 2 2007-02-12 09:48:44 -08:00
powerpc [PATCH] sysctl: remove insert_at_head from register_sysctl 2007-02-14 08:09:59 -08:00
ppc [PATCH] sysctl: remove insert_at_head from register_sysctl 2007-02-14 08:09:59 -08:00
s390 [PATCH] clocksource: fixup is_continous changes on S390 2007-02-16 08:13:57 -08:00
sh sh: rts7751r2d board updates. 2007-02-15 18:20:52 +09:00
sh64 [PATCH] sysctl: remove insert_at_head from register_sysctl 2007-02-14 08:09:59 -08:00
sparc [SPARC]: Re-export saved_command_line to modules. 2007-02-12 15:15:48 -08:00
sparc64 [SPARC]: Re-export saved_command_line to modules. 2007-02-12 15:15:48 -08:00
um [PATCH] uml: fix 2.6.20 hang 2007-02-16 08:13:56 -08:00
v850 [PATCH] mark struct file_operations const 2 2007-02-12 09:48:44 -08:00
x86_64 [PATCH] x86: rewrite SMP TSC sync code 2007-02-16 08:13:57 -08:00
xtensa [PATCH] Dynamic kernel command-line: xtensa 2007-02-12 09:48:39 -08:00