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authorDavid S. Miller <davem@sunset.davemloft.net>2007-03-05 15:28:37 -0800
committerDavid S. Miller <davem@sunset.davemloft.net>2007-04-26 01:54:15 -0700
commit112f48716d9f292c92a033cff9e3ce7405ed4280 (patch)
tree5be2952ca83adb519df5995c10e0686447fea88f /arch/sparc64/Kconfig
parent038cb01ea69cb24ecf30e3ec882e429c84badbeb (diff)
[SPARC64]: Add clocksource/clockevents support.
I'd like to thank John Stul and others for helping me along the way. A lot of cleanups fell out of this. For example, the get_compare() tick_op was totally unused, so was deleted. And the most often used tick_op members were grouped together for cache-friendlyness. The sparc64 TSC is given to the kernel as a one-shot timer. tick_ops->init_timer() simply turns off the privileged bit in the tick register (when possible), and disables the interrupt by setting bit 63 in the compare register. The ->disable_irq() op also sets this bit. tick_ops->add_compare() is changed to: 1) Add the given delta to "tick" not to "compare" 2) Return a boolean which, if true, means that the tick value read after writing the compare value was found to have incremented past the initial tick value. This mirrors logic used in the HPET driver's ->next_event() method. Each tick_ops implementation also now provides a name string. And we feed this into the clocksource and clockevents layers. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/Kconfig')
-rw-r--r--arch/sparc64/Kconfig14
1 files changed, 10 insertions, 4 deletions
diff --git a/arch/sparc64/Kconfig b/arch/sparc64/Kconfig
index 1a6348b565f..51c87fdd998 100644
--- a/arch/sparc64/Kconfig
+++ b/arch/sparc64/Kconfig
@@ -19,6 +19,14 @@ config SPARC64
SPARC64 ports; its web page is available at
<http://www.ultralinux.org/>.
+config GENERIC_TIME
+ bool
+ default y
+
+config GENERIC_CLOCKEVENTS
+ bool
+ default y
+
config 64BIT
def_bool y
@@ -34,10 +42,6 @@ config LOCKDEP_SUPPORT
bool
default y
-config TIME_INTERPOLATION
- bool
- default y
-
config ARCH_MAY_HAVE_PC_FDC
bool
default y
@@ -113,6 +117,8 @@ config GENERIC_HARDIRQS
menu "General machine setup"
+source "kernel/time/Kconfig"
+
config SMP
bool "Symmetric multi-processing support"
---help---