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Author: mpagano |
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Date: 2008-03-28 11:51:49 +0000 (Fri, 28 Mar 2008) |
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New Revision: 1275 |
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|
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Added: |
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genpatches-2.6/trunk/2.6.24/1400_prevent-gcc43-optimization-udivdi3.patch |
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Modified: |
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genpatches-2.6/trunk/2.6.24/0000_README |
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Log: |
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Adding patch to prevent gcc 4.3 optimizations for all archs. |
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|
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Modified: genpatches-2.6/trunk/2.6.24/0000_README |
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=================================================================== |
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--- genpatches-2.6/trunk/2.6.24/0000_README 2008-03-25 23:51:16 UTC (rev 1274) |
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+++ genpatches-2.6/trunk/2.6.24/0000_README 2008-03-28 11:51:49 UTC (rev 1275) |
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@@ -51,10 +51,14 @@ |
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From: http://www.kernel.org |
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Desc: Linux 2.6.24.3 |
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|
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-Patch: 1002_linux-2.6.24.4.patch |
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+Patch: 1003_linux-2.6.24.4.patch |
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From: http://www.kernel.org |
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Desc: Linux 2.6.24.4 |
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|
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+Patch: 1400_prevent-gcc43-optimization-udivdi3.patch |
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+From: http://bugs.gentoo.org/show_bug.cgi?id=214654 |
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+Desc: Prevent gcc udivdi3 optimizations due to some unsupported archs. |
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+ |
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Patch: 2100_sd-sr-medium-detection.patch |
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From: http://bugs.gentoo.org/196879 |
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Desc: Add early medium-not-present detection in sr/sd drivers |
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|
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Added: genpatches-2.6/trunk/2.6.24/1400_prevent-gcc43-optimization-udivdi3.patch |
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=================================================================== |
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--- genpatches-2.6/trunk/2.6.24/1400_prevent-gcc43-optimization-udivdi3.patch (rev 0) |
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+++ genpatches-2.6/trunk/2.6.24/1400_prevent-gcc43-optimization-udivdi3.patch 2008-03-28 11:51:49 UTC (rev 1275) |
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@@ -0,0 +1,33 @@ |
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+From 38332cb98772f5ea757e6486bed7ed0381cb5f98 Mon Sep 17 00:00:00 2001 |
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+From: Segher Boessenkool <segher@×××××××××××××××.org> |
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+Date: Tue, 4 Mar 2008 14:59:54 -0800 |
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+Message-ID: <2d0a357f0803241147o351f9434y696cb33841ffe834@××××××××××.com> |
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+Subject: time: prevent the loop in timespec_add_ns() from being optimised away |
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+ |
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+Since some architectures don't support __udivdi3(). |
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+ |
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+Signed-off-by: Segher Boessenkool <segher@×××××××××××××××.org> |
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+Cc: john stultz <johnstul@××××××.com> |
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+Cc: Ingo Molnar <mingo@××××.hu> |
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+Signed-off-by: Andrew Morton <akpm@××××××××××××××××.org> |
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+Signed-off-by: Thomas Gleixner <tglx@××××××××××.de> |
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+Cc: Sedat Dilek <sedat.dilek@××××××××××.com> |
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+Signed-off-by: Chris Wright <chrisw@××××××××.org> |
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+--- |
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+ include/linux/time.h | 4 ++++ |
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+ 1 file changed, 4 insertions(+) |
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+ |
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+--- a/include/linux/time.h |
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++++ b/include/linux/time.h |
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+@@ -173,6 +173,10 @@ static inline void timespec_add_ns(struc |
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+ { |
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+ ns += a->tv_nsec; |
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+ while(unlikely(ns >= NSEC_PER_SEC)) { |
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++ /* The following asm() prevents the compiler from |
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++ * optimising this loop into a modulo operation. */ |
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++ asm("" : "+r"(ns)); |
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++ |
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+ ns -= NSEC_PER_SEC; |
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+ a->tv_sec++; |
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+ } |
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+ |
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|
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-- |
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