Merge branch 'x86-tsc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'x86-tsc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Check tsc available/disabled in the delayed init function
  x86: Improve TSC calibration using a delayed workqueue
  x86: Make tsc=reliable override boot time stability checks

1 files changed, 5 insertions, 4 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index d6496fde6180..f3dc951e949f 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -2461,12 +2461,13 @@ and is between 256 and 4096 characters. It is defined in the file
                         to facilitate early boot debugging.
                         See also Documentation/trace/events.txt
 
-        tsc=            Disable clocksource-must-verify flag for TSC.
+        tsc=            Disable clocksource stability checks for TSC.
                         Format: <string>
                         [x86] reliable: mark tsc clocksource as reliable, this
-                        disables clocksource verification at runtime.
-                        Used to enable high-resolution timer mode on older
-                        hardware, and in virtualized environment.
+                        disables clocksource verification at runtime, as well
+                        as the stability checks done at bootup. Used to enable
+                        high-resolution timer mode on older hardware, and in
+                        virtualized environment.
                         [x86] noirqtime: Do not use TSC to do irq accounting.
                         Used to run time disable IRQ_TIME_ACCOUNTING on any
                         platforms where RDTSC is slow and this accounting