Lowers the "priority" of clocksource tsc below acpi on x86 systems.
I'm doing this, because tsc is not stable on virtualized machines nor on smp
systems, and so acpi gets selected instead of tsc and then jiffies (if acpi is
built in, which I would recommend for x86).
Signed-off-by: Alexander Stadler <sa.maillists at univie.ac.at>
------
diff -urN openwrt-8.09/arch/x86/kernel/tsc_32.c openwrt/arch/x86/kernel/tsc_32.c
--- a/arch/x86/kernel/tsc_32.c 2008-09-08 12:20:51.000000000 +0200
+++ b/arch/x86/kernel/tsc_32.c 2009-04-17 11:55:40.000000000 +0200
@@ -297,7 +297,7 @@
static struct clocksource clocksource_tsc = {
.name = "tsc",
- .rating = 300,
+ .rating = 199,
.read = read_tsc,
.mask = CLOCKSOURCE_MASK(64),
.mult = 0, /* to be set */
diff -urN openwrt-8.09/arch/x86/kernel/tsc_64.c openwrt/arch/x86/kernel/tsc_64.c
--- a/arch/x86/kernel/tsc_64.c 2008-09-08 12:20:51.000000000 +0200
+++ b/arch/x86/kernel/tsc_64.c 2009-04-17 11:55:42.000000000 +0200
@@ -305,7 +305,7 @@
static struct clocksource clocksource_tsc = {
.name = "tsc",
- .rating = 300,
+ .rating = 199,
.read = read_tsc,
.mask = CLOCKSOURCE_MASK(64),
.shift = 22,
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