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authorHeiko Carstens <heiko.carstens@de.ibm.com>2008-04-17 07:46:25 +0200
committerHeiko Carstens <heiko.carstens@de.ibm.com>2008-04-17 07:47:05 +0200
commit5a62b192196af9a798e2f2f4c6a1324e7edf2f4b (patch)
tree0aa96ba3153b257000be22e49befbde2b5bd6917 /arch/s390/Kconfig
parentd7b906897e9caae452947e33674df0a2d6f7e10f (diff)
[S390] Convert s390 to GENERIC_CLOCKEVENTS.
This way we get rid of s390's NO_IDLE_HZ and use the generic dynticks variant instead. In addition we get high resolution timers for free. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'arch/s390/Kconfig')
-rw-r--r--arch/s390/Kconfig24
1 files changed, 5 insertions, 19 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index da6ea64cc34..f6a68e178fc 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -43,6 +43,9 @@ config GENERIC_HWEIGHT
config GENERIC_TIME
def_bool y
+config GENERIC_CLOCKEVENTS
+ def_bool y
+
config GENERIC_BUG
bool
depends on BUG
@@ -73,6 +76,8 @@ menu "Base setup"
comment "Processor type and features"
+source "kernel/time/Kconfig"
+
config 64BIT
bool "64 bit kernel"
help
@@ -487,25 +492,6 @@ config APPLDATA_NET_SUM
source kernel/Kconfig.hz
-config NO_IDLE_HZ
- bool "No HZ timer ticks in idle"
- help
- Switches the regular HZ timer off when the system is going idle.
- This helps z/VM to detect that the Linux system is idle. VM can
- then "swap-out" this guest which reduces memory usage. It also
- reduces the overhead of idle systems.
-
- The HZ timer can be switched on/off via /proc/sys/kernel/hz_timer.
- hz_timer=0 means HZ timer is disabled. hz_timer=1 means HZ
- timer is active.
-
-config NO_IDLE_HZ_INIT
- bool "HZ timer in idle off by default"
- depends on NO_IDLE_HZ
- help
- The HZ timer is switched off in idle by default. That means the
- HZ timer is already disabled at boot time.
-
config S390_HYPFS_FS
bool "s390 hypervisor file system support"
select SYS_HYPERVISOR