[PATCH] hrtimers: add high resolution timer support

Implement high resolution timers on top of the hrtimers infrastructure and the
clockevents / tick-management framework.  This provides accurate timers for
all hrtimer subsystem users.

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>

1 files changed, 10 insertions, 0 deletions

diff --git a/kernel/time/Kconfig b/kernel/time/Kconfig
index 9ec54eb3667f..f66351126544 100644
--- a/kernel/time/Kconfig
+++ b/kernel/time/Kconfig
@@ -13,3 +13,13 @@ config NO_HZ
           This option enables a tickless system: timer interrupts will
           only trigger on an as-needed basis both when the system is
           busy and when the system is idle.
+
+config HIGH_RES_TIMERS
+        bool "High Resolution Timer Support"
+        depends on GENERIC_TIME && GENERIC_CLOCKEVENTS
+        select TICK_ONESHOT
+        help
+          This option enables high resolution timer support. If your
+          hardware is not capable then this option only increases
+          the size of the kernel image.
+