Imported linux-2.6.27.39 suse/xen patches.

[people/pmueller/ipfire-2.x.git] / src / patches / suse-2.6.27.31 / patches.fixes / ia64-configure-HAVE_UNSTABLE_SCHED_CLOCK-for-SGI_SN.patch

diff --git a/src/patches/suse-2.6.27.31/patches.fixes/ia64-configure-HAVE_UNSTABLE_SCHED_CLOCK-for-SGI_SN.patch b/src/patches/suse-2.6.27.31/patches.fixes/ia64-configure-HAVE_UNSTABLE_SCHED_CLOCK-for-SGI_SN.patch
deleted file mode 100644 (file)
index 66c17fa..0000000
--- a/src/patches/suse-2.6.27.31/patches.fixes/ia64-configure-HAVE_UNSTABLE_SCHED_CLOCK-for-SGI_SN.patch
+++ /dev/null
@@ -1,43 +0,0 @@
-Date: Tue, 6 Jan 2009 10:27:41 -0600
-From: Dimitri Sivanich <sivanich@sgi.com>
-To: linux-ia64@vger.kernel.org, Tony Luck <tony.luck@intel.com>,
-       Greg KH <greg@kroah.com>
-Cc: linux-kernel@vger.kernel.org,
-       Peter Zijlstra <peterz@infradead.org>,
-       Gregory Haskins <ghaskins@novell.com>, Nick Piggin <npiggin@suse.de>,
-       Tony Luck <tony.luck@gmail.com>, Robin Holt <holt@sgi.com>
-Subject: configure HAVE_UNSTABLE_SCHED_CLOCK for SGI_SN systems
-
-Turn on CONFIG_HAVE_UNSTABLE_SCHED_CLOCK for SGI_SN.
-
-SGI Altix has unsynchronized itc clocks.  This results in rq->clock
-occasionally being set to a time in the past by a remote cpu.
-
-Note that it is possible that this problem may exist for other ia64
-machines as well, based on the following comment for sched_clock() in
-arch/ia64/kernel/head.S:
-
- * Return a CPU-local timestamp in nano-seconds.  This timestamp is
- * NOT synchronized across CPUs its return value must never be
- * compared against the values returned on another CPU.  The usage in
- * kernel/sched.c ensures that.
-
-
-Signed-off-by: Dimitri Sivanich <sivanich@sgi.com>
-Signed-off-by: Gregory Haskins <ghaskins@novell.com>
-
----
-
- arch/ia64/Kconfig |    1 +
- 1 file changed, 1 insertion(+)
-
---- a/arch/ia64/Kconfig
-+++ b/arch/ia64/Kconfig
-@@ -504,6 +504,7 @@ config IA64_MC_ERR_INJECT
- 
- config SGI_SN
-       def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
-+      select HAVE_UNSTABLE_SCHED_CLOCK
- 
- config IA64_ESI
-       bool "ESI (Extensible SAL Interface) support"